CN215730294U

CN215730294U - Extensible demonstration board for law teaching

Info

Publication number: CN215730294U
Application number: CN202122334072.8U
Authority: CN
Inventors: 陈春燕; 周岩
Original assignee: Zhengzhou Railway Engineering Vocational College
Current assignee: Zhengzhou Railway Engineering Vocational College
Priority date: 2021-09-26
Filing date: 2021-09-26
Publication date: 2022-02-01
Anticipated expiration: 2031-09-26

Abstract

The utility model discloses an extensible demonstration board for law teaching, which comprises an installation frame and a back board, wherein a conference flat board is embedded in the front vertical surface of the installation frame. Has the advantages that: the back plate, the positive and negative tooth screw rods, the motor and the conference plate are adopted, in the process of daily demonstration teaching, a worker can use the conference plate for demonstration, when the blackboard writing is required, the motor can be started to rotate, the motor rotates to drive the positive and negative tooth screw rods to rotate, so that the connecting blocks are driven to move outwards, the back plate is driven to move outwards along the guide grooves to be opened, the back plate is opened, the blackboard writing can be performed, the demonstration content of the conference plate can be conveniently expanded and read, meanwhile, the study staff can conveniently observe and memorize, the back plate of the device can be expanded and opened and can be retracted to the rear of the mounting frame, the direct use of the conference plate for demonstration is not influenced, the space occupation is saved, the electric opening mode is adopted, and the use is more convenient and simple.

Description

Extensible demonstration board for law teaching

Technical Field

The utility model relates to the technical field of teaching boards, in particular to an extensible demonstration board for law teaching.

Background

The teaching board is a board placed in a classroom or a conference room, and the teaching board plays a role in explaining and demonstrating contents written by chalk or water-based pen, along with the development of information technology, more and more teaching boards have a multimedia display function, and in legal teaching activities, because a large number of examples are needed to explain legal provisions, most workers can choose to use a multimedia display to demonstrate and teach, and in the teaching process, along with the writing of the board writing, the learning and understanding are facilitated for students, but the traditional multimedia display and the teaching demonstration board are separately arranged and cannot be integrated, so that more space is occupied, the teaching board can be further improved, and in addition, the teaching board is found to be an extensible demonstration board for legal teaching through retrieval, the application number is CN201910933140.7, the publication number is CN110660276A, and the name is an extensible demonstration board for legal teaching, this application is when using the display screen, need reciprocate the display screen, can't directly use, it is comparatively troublesome to cause law teaching demonstration, and simultaneously, still need manually to open the clipboard, it is comparatively troublesome to use, can further make the improvement, and simultaneously, this application is opened the back, the area is enlarged, especially, the display screen raises the back, the center shifts up, and this application adopts the most traditional base to support at present, lead to this application to receive askew problem of falling behind the wind-force scratch easily, it is not stable enough to put, also can further make the improvement.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides an extensible demonstration board for law teaching, which has the advantages of extensible back board, more convenient use and more stable placement, and further solves the problems in the background art.

(II) technical scheme

In order to realize the advantages of expandable backboard, more convenient use and more stable placement, the utility model adopts the following specific technical scheme:

the utility model provides an expanded demonstration board that law teaching was used, includes installing frame and backplate, the embedding of the positive facade of installing frame has the meeting dull and stereotyped, and installing frame back of the body facade bottom surface integral type is connected with the guide way to the inside sliding connection of guide way has the backplate, the vertical fixedly connected with end plate in installing frame top surface both ends, and rotate between the end plate and be connected with positive and negative tooth lead screw to end plate one end fixed mounting has the motor shell, the inside fixed mounting of motor shell has the motor, and motor output end and positive and negative tooth lead screw one end fixed connection, backplate top surface one end fixedly connected with connecting block, and the connecting block extends to installing frame top surface, positive and negative tooth lead screw through connection piece and with connecting block threaded connection.

Further, the installing frame bottom surface is connected with the bed plate through the stand, and the bed plate bottom surface rotates through the pivot and is connected with the landing leg to it has the extension board to lie in bed plate bottom surface fixed mounting between the landing leg, the electric push rod is installed to extension board surface slant, the spout has been seted up on the landing leg surface, and the inside sliding connection of spout has the slider, the interior pole other end of electric push rod is articulated with the slider through articulated seat.

Furthermore, the stand column adopts a rectangular rod piece, and a containing basket is fixedly arranged between the stand columns.

Furthermore, the number of the supporting legs is four, and the supporting legs are made of metal materials which are not easy to deform.

Furthermore, the bottom surface of the other end of the supporting leg is provided with a universal wheel, and the universal wheel is provided with a self-locking structure.

Furthermore, the total length of the back plate is equal to the length of the mounting frame, and the thickness of the back plate is smaller than the inner width of the guide groove.

(III) advantageous effects

Compared with the prior art, the utility model provides an extensible demonstration board for law teaching, which has the following beneficial effects:

(1) the back plate, the positive and negative tooth lead screws, the motor and the conference plate are adopted, in the process of daily demonstration teaching, a worker can use the conference plate for demonstration, when the blackboard writing is required, the motor can be started to rotate, the motor rotates to drive the positive and negative tooth lead screws to rotate, so that the connecting blocks are driven to move outwards, the back plate is driven to move outwards along the guide grooves to be opened, the back plate is opened, the blackboard writing can be performed, the demonstration content of the conference plate can be conveniently expanded and read, meanwhile, the study staff can conveniently observe and memorize, the back plate of the device can be expanded and opened and can be retracted to the rear of the mounting frame, the direct use of the conference plate for demonstration is not influenced, the space occupation is saved, the electric opening mode is adopted, and the use is more convenient and simple.

(2) The electric back plate supporting device adopts the supporting legs, the rotating shaft and the electric push rod, when the motor is started synchronously to drive the back plate to be opened, the electric push rod extends synchronously to push the supporting legs to be opened outwards along the rotating shaft to form a cross supporting mode, so that the supporting stability is improved, the device is convenient to stably place, the risk of tilting is avoided, meanwhile, the supporting legs are opened electrically to improve the placing stability, and the use is simpler and more convenient.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a back elevation of an expandable demonstration board for law teaching according to the present invention;

FIG. 2 is a front view of an extensible demonstration board for law teaching according to the present invention;

FIG. 3 is a bottom view of the base plate of the present invention;

FIG. 4 is a schematic structural diagram of a mounting frame according to the present invention;

FIG. 5 is a schematic structural diagram of a back plate according to the present invention;

fig. 6 is a schematic view of the connection between the slider and the leg according to the present invention.

In the figure:

1. a back plate; 2. a screw rod with positive and negative teeth; 3. an end plate; 4. connecting blocks; 5. a motor housing; 6. a motor; 7. a guide groove; 8. a column; 9. a containing basket; 10. a base plate; 11. a universal wheel; 12. a support leg; 13. a rotating shaft; 14. installing a frame; 15. a conference tablet; 16. an electric push rod; 17. a slider; 18. a hinged seat; 19. a support plate; 20. a chute.

Detailed Description

For further explanation of the various embodiments, the drawings which form a part of the disclosure and which are incorporated in and constitute a part of this specification, illustrate embodiments and, together with the description, serve to explain the principles of operation of the embodiments, and to enable others of ordinary skill in the art to understand the various embodiments and advantages of the utility model, and, by reference to these figures, reference is made to the accompanying drawings, which are not to scale and wherein like reference numerals generally refer to like elements.

According to an embodiment of the utility model, an extensible demonstration board for law teaching is provided.

The present invention will be further described with reference to the accompanying drawings and specific embodiments, as shown in fig. 1-6, an expandable demonstration board for law teaching according to an embodiment of the present invention includes a mounting frame 14 and a back board 1, a conference flat board 15 is embedded in a front vertical surface of the mounting frame 14, which is a common device, a guide groove 7 is integrally connected to a bottom surface of a back vertical surface of the mounting frame 14, the back board 1 is slidably connected to the inside of the guide groove 7, end plates 3 are vertically and fixedly connected to two ends of a top surface of the mounting frame 14, a front and back screw rod 2 is rotatably connected between the end plates 3, which is a common component, a motor housing 5 is fixedly installed at one end of the end plate 3, a motor 6 is fixedly installed inside the motor housing 5, an output end of the motor 6 is fixedly connected to one end of the front and back screw rod 2, a connecting block 4 is fixedly connected to one end of the top surface of the back board 1, and the connecting block 4 extends to the top surface above the mounting frame 14, positive and negative tooth lead screw 2 through connection piece 4 and with 4 threaded connection of connecting block, in-process at daily demonstration teaching, the staff can use the dull and stereotyped 15 of meeting to demonstrate, when needs carry out the blackboard-writing, can start motor 6 rotates, motor 6 rotates and drives positive and negative tooth lead screw 2 and rotates, thereby drive connecting block 4 outside removal, and then drive backplate 1 and open along 7 outside removals of guide way, thereby open backplate 1, can carry out the blackboard-writing, be convenient for expand and key reading the dull and stereotyped 15 demonstration content of meeting, and simultaneously, the study personnel of being convenient for observe memory, backplate 1 of this device can expand to be opened, also can withdraw to the 14 backs of installing frame, do not influence the dull and stereotyped 15 demonstration of direct use meeting, the space occupation has been saved simultaneously, adopt electronic open mode, it is also convenient and simple to use.

In one embodiment, the bottom surface of the mounting frame 14 is connected with a base plate 10 through an upright post 8, the bottom surface of the base plate 10 is rotatably connected with supporting legs 12 through a rotating shaft 13, the supporting legs 12 rotate in a horizontal plane along the rotating shaft 13, a supporting plate 19 is fixedly arranged between the supporting legs 12 and positioned on the bottom surface of the base plate 10, an electric push rod 16 is obliquely arranged on the surface of the supporting plate 19, a sliding groove 20 is formed in the surface of the supporting leg 12, a sliding block 17 is slidably connected inside the sliding groove 20, the other end of an inner rod of the electric push rod 16 is hinged with the sliding block 17 through a hinged seat 18, the electric push rod 16 pushes the sliding block 17 to move in the sliding groove 20, meanwhile, the hinged seat 18 enables the inner rod of the electric push rod 16 and the sliding block 17 to relatively rotate, further pushes the supporting legs 12 to rotate, the electric push rod 16 synchronously extends while the motor 6 drives the back plate 1 to open, a control switch can be adopted for synchronous control, and is a common structure, not shown in the figure, promote landing leg 12 and outwards open along pivot 13, form cross support's form, improved the stability of support, be convenient for stably put this device, avoided askew risk of falling, simultaneously, adopt electronic landing leg 12 of opening to improve and put stability, it is more simple and convenient to use.

In one embodiment, the upright columns 8 are rectangular rod members, and a holding basket 9 is fixedly arranged between the upright columns 8, so that teaching auxiliary articles such as chalks, writing pens and remote controllers can be conveniently held.

In one embodiment, four support legs 12 are provided, and the support legs 12 are made of a non-deformable metal material, so that the phenomenon of insufficient bearing capacity caused by deformation is avoided.

In one embodiment, the universal wheel 11 is mounted on the bottom surface of the other end of the supporting leg 12, and the universal wheel 11 is provided with a self-locking structure to facilitate moving the device.

In one embodiment, the total length of the back plate 1 is equal to the length of the mounting frame 14, and the thickness of the back plate 1 is smaller than the inner width of the guide groove 7, so that the back plate 1 can slide along the guide groove 7 conveniently.

The working principle is as follows:

in the process of daily demonstration teaching, a worker can use the conference plate 15 for demonstration, when a blackboard writing is required, the motor 6 can be started to rotate, the motor 6 rotates to drive the positive and negative teeth screw rod 2 to rotate, so as to drive the connecting block 4 to move outwards, and further drive the back plate 1 to move outwards along the guide groove 7 and open, so that the back plate 1 is opened, the blackboard writing can be performed, the demonstration content of the conference plate 15 can be conveniently expanded and mainly read, meanwhile, the study staff can conveniently observe and memorize, the back plate 1 of the device can be expanded and opened, and can also be retracted to the rear side of the mounting frame 14, the direct demonstration by using the conference plate 15 is not influenced, the space occupation is saved, an electric opening mode is adopted, the use is more convenient and simple, meanwhile, when the motor 6 is started to drive the back plate 1 to open, the electric push rod 16 synchronously extends, and the supporting legs 12 are pushed to open outwards along the rotating shaft 13, form cross support's form, improved the stability of support, be convenient for stably put this device, avoided the risk of askew falling, simultaneously, adopt electronic landing leg 12 of opening to improve and put stability, it is more simple and convenient to use.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The expandable demonstration board for law teaching is characterized by comprising an installation frame (14) and a back board (1), wherein a conference flat board (15) is embedded in the front vertical surface of the installation frame (14), a guide groove (7) is integrally connected with the bottom surface of the back vertical surface of the installation frame (14), the back board (1) is slidably connected in the guide groove (7), end plates (3) are vertically and fixedly connected with the two ends of the top surface of the installation frame (14), a positive and negative screw rod (2) is rotatably connected between the end plates (3), a motor shell (5) is fixedly installed at one end of each end plate (3), a motor (6) is fixedly installed in each motor shell (5), the output end of the motor (6) is fixedly connected with one end of the positive and negative screw rod (2), a connecting block (4) is fixedly connected with one end of the top surface of the back board (1), and the connecting block (4) extends to the top surface above the installation frame (14), the positive and negative tooth screw rod (2) penetrates through the connecting block (4) and is in threaded connection with the connecting block (4).

2. The expandable demonstration board for law teaching as claimed in claim 1, wherein the bottom surface of the mounting frame (14) is connected with a base plate (10) through a column (8), the bottom surface of the base plate (10) is rotatably connected with a leg (12) through a rotating shaft (13), a support plate (19) is fixedly mounted between the legs (12) and located on the bottom surface of the base plate (10), an electric push rod (16) is obliquely mounted on the surface of the support plate (19), a sliding groove (20) is formed in the surface of the leg (12), a sliding block (17) is slidably connected inside the sliding groove (20), and the other end of the inner rod of the electric push rod (16) is hinged with the sliding block (17) through a hinge seat (18).

3. The expandable demonstration board for law teaching according to claim 2, wherein the upright posts (8) are rectangular rod members, and the holding basket (9) is fixedly installed between the upright posts (8).

4. The expandable demonstration board for law teaching according to claim 2, wherein four legs (12) are provided, and the legs (12) are made of a non-deformable metal material.

5. The expandable demonstration board for law teaching according to claim 2, wherein the universal wheels (11) are mounted on the bottom surfaces of the other ends of the legs (12), and the universal wheels (11) have self-locking structures.

6. An expandable demonstration board for law teaching according to claim 1 wherein the total length of the back board (1) is equal to the length of the mounting frame (14) and the thickness of the back board (1) is less than the inner width of the guiding groove (7).