CN204232569U - A kind of Multifunctional desk - Google Patents

Abstract

The utility model discloses a multifunctional student desk, which comprises a table body, the table body includes a tabletop, a drawer, an electronic roll call device, a table belly, table legs, a table cabinet, wheels and a positioning assembly, and the tabletop includes a fixed tabletop board and a drawing board used for drawing by hand, the drawing board is hinged to the desktop, and the positioning assembly includes two connecting rods connected between the drawing board and the desktop to form a planar four-bar mechanism and the two connecting rods through the same hinge shaft A hinged positioning bar, the electronic roll caller includes a switch installed on the fixed desktop and an indicator panel installed on the podium. The utility model divides the desk into different areas, so that the textbooks and school supplies can be classified and placed, and the space of the desk is fully utilized. The drawing board is set and the inclination angle can be adjusted through the positioning component, so that the students can maintain the most comfortable posture, which is beneficial Relieve fatigue, improve drawing efficiency, and set up an electronic roll call device, which improves roll roll efficiency and saves classroom time.

Description

A multifunctional student desk

technical field

The utility model relates to a teaching aid, in particular to a multifunctional student desk. the

Background technique

Desks provide a good learning place for students to read, which greatly facilitates students' learning. Generally, the desks of students are relatively single, but students have a lot of books and learning materials, and the space of the desk drawers is limited. Books are stacked together, and it is very inconvenient to take them out. Books are easy to collapse when they are stacked high, and the space utilization rate of the desk is not maximized. When students start drawing by hand, they usually have to get a drawing board or draw on the desktop, so that the students' lumbar spine and cervical spine bend forward synchronously. Difficulty in learning. Teachers often need to roll call before class, and the work of roll call requires the teacher to read the names of the students one by one and wait for the students to answer, so the efficiency is low and precious time in the classroom is wasted. the

Utility model content

The purpose of this utility model is to provide a multifunctional student desk to solve the problems raised in the background technology above. the

In order to achieve the above object, the utility model provides the following technical solutions:

A multifunctional student desk, including a table body, the table body includes a tabletop, drawers, electronic roll caller, table belly, table legs, desk cabinets, wheels and positioning components, the tabletop includes a fixed tabletop and a hand-painted Drawing board for drawing, the drawer is arranged under the fixed desktop board, the table cabinet is arranged under the drawer, the drawing board is arranged on the table belly, the drawing board is hinged to the desktop and positioned by a positioning component and adjust the inclination angle, the positioning assembly includes two connecting rods connected between the drawing board and the desktop to form a plane four-bar mechanism and a positioning rod hinged with the two connecting rods through the same hinge shaft, and the positioning rod is provided with a movable There are multiple card slots fixed on the edge of the tabletop. There are two table legs, which are arranged on both sides of the table belly. The table cabinet and table legs support the entire table body. There are six wheels, which are respectively arranged on the Under the two table legs and at the four corners of the bottom surface of the table cabinet, cabinet doors are provided on the table cabinet, and the electronic roll call device includes a switch installed on the fixed desktop board, an A/D converter connected to the switch, and an A/D converter connected to the The DS1302 clock chip of the A/D converter, the buffer register that is connected to the DS1302 clock chip and stores the ANSII code of the name and Chinese characters at the control end, and the RS2232 communication card connected to the output end of the buffer register 1. Connect with the RS2232 communication card through the RS232 data line The RS2232 communication card two, the trigger connected to the RS2232 communication card two and the indicator panel installed on the podium. the

As a further solution of the utility model: the cabinet door is fixed at the opening in front of the cabinet through a hinge on the left side, and its size is equal to that of the cabinet. the

As a further solution of the utility model: two hooks are arranged on the right side of the desk cabinet. the

As a further solution of the utility model: several LED lights are installed on the indicator panel, the LED lights are connected to the power supply through relays, the control terminals of each relay are connected to each output pin of the trigger through the D/A converter, and the LED lights on the indicator panel And a cardboard for writing names is fixed above the LED lights. the

Compared with the prior art, the beneficial effect of the utility model is: the desk is divided into different areas, so that textbooks and school supplies can be classified and placed, and the space of the desk is fully utilized; the desk is provided with wheels, which is more convenient to move, and The inclination angle of the drawing board can be adjusted through the positioning component, which improves the disadvantage that the lumbar spine and cervical spine of the student bend forward synchronously when the drawing board is in use. , allowing students to maintain the most comfortable posture, which is conducive to relieving fatigue and improving drawing efficiency. The electronic roll call device is set, and students can press the switch on the table. The current signal sent by the switch is converted into a digital signal by the A/D converter. Input to the DS1302 clock chip, after the DS1302 clock chip receives the switch instruction, it will convert the hexadecimal instruction code representing Chinese characters in the buffer register storing the student name and Chinese character ANSII code into 24-bit serial data with a baud rate of 9600 And transmit it to the trigger through RS2232, the trigger generates a corresponding trigger signal and converts it into an analog current signal through D/A, and it controls the relay to pull in, so that the LED light of the student is lit, and the teacher according to the instruction panel 1 The on-off situation of each LED lamp 2 can know the attendance situation of the students, which improves the efficiency of roll call and saves classroom time. the

Description of drawings

Fig. 1 is a structural schematic diagram of a multifunctional student desk. the

Fig. 2 is a left view of the multifunctional student desk. the

Fig. 3 is a system connection frame diagram of the electronic roll call device of the multifunctional student desk. the

Among the figure: table body 1, drawer 2, fixed desktop board 3, electronic roll call device 4, drawing board 5, table belly 6, table leg 7, hook 8, table cabinet 9, wheel 10, hinge 11, cabinet door 12, connecting Rod 13, positioning rod 14, hinged shaft 15. the

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model. the

Please refer to Fig. 1-3, in the embodiment of the present utility model, a kind of multifunctional student's desk comprises desk body 1, and described desk body 1 comprises desktop, drawer 2, electronic roll caller 4, table belly 6, table leg 7 , table cabinet 9, wheels 10 and positioning components, the desktop includes a fixed desktop board 3 and a drawing board 5 for hand-drawn drawings, the drawer 2 is arranged under the fixed desktop board 3, and the desk cabinet 9 is arranged on the drawer 2 Below, the drawing board 5 is arranged on the table belly 6, the drawing board 5 is hinged on the desktop and is positioned and the tilt angle is adjusted by a positioning assembly, and the positioning assembly includes a Two connecting rods 13 forming a planar four-bar mechanism and a positioning rod 14 hinged with the two connecting rods 13 through the same hinge shaft 15, the positioning rod 14 is provided with a plurality of draw-in grooves that can be stuck on the edge of the desktop, and the Two table legs 7 are arranged on both sides of the table belly 6. The table cabinet 9 and the table legs 7 support the entire table body 1. There are six wheels 10, which are respectively arranged under the two table legs 7 and At the four corners of the bottom surface of the table cabinet 9, the table cabinet 9 is provided with a cabinet door 12, and the cabinet door 12 is fixed at the opening in front of the cabinet by the hinge 11 on the left side, the size is equal to the size of the cabinet, and can be opened along the hinge. 11 rotates, opens and closes, is used for sealing cabinet opening, protects the article inside the cabinet, and the right side of described table cabinet 9 is provided with two hooks 8, is used for placing school bag and umbrella etc., makes full use of the space under the table, so Described electronic roll call device 4 comprises the switch that is installed on the fixed desktop board 3, is connected with the A/D converter of switch, is connected with the DS1302 clock chip of A/D converter, and the control terminal is connected with DS1302 clock chip and stores name. Buffer register of Chinese character ANSII code, RS2232 communication card 1 connected to the output end of the buffer register, RS2232 communication card 2 connected to RS2232 communication card 1 through RS232 data line, trigger connected to RS2232 communication card 2 and instructions installed on the platform Panel, indicating that there are several LED lights installed on the panel, the LED lights are connected to the power supply through the relay, and the control terminals of each relay are connected to the output pins of the trigger through the D/A converter, and the indicator panel is fixed above the LED lights Cardboard for writing names on. the

When the utility model is in use, according to individual needs, textbooks and school supplies can be classified and placed in the drawer 2 and the table cabinet 9, and some school supplies can be placed on the table belly 6, such as drawing tools and stationery, etc., and schoolbags and umbrellas can be placed. On the hook 8, the space at the bottom of the table is fully utilized, and the drawing board 5 provided can be put flat and on the same level as the fixed desktop board 3 at ordinary times, and the inclination angle can be adjusted by the positioning component during the drawing class, which improves the use of the drawing board 5 The students' lumbar spine and cervical spine bend forward synchronously. If they draw at the desk for a long time, it is easy to cause the shortcomings of lumbar spine and cervical spine diseases. It meets the principle of ergonomics and allows students to maintain the most comfortable posture, which is conducive to alleviating fatigue and improving drawing efficiency. , when the teacher wants to roll the roll, the students can press the switch on the table, the current signal sent by the switch is converted into a digital signal by the A/D converter and input to the DS1302 clock chip, and the DS1302 clock chip will turn on the switch after receiving the switch instruction. The hexadecimal instruction code representing Chinese characters in the buffer register storing the ANSII code of the student’s name and Chinese character is converted into 24-bit serial data with a baud rate of 9600 and transmitted to the trigger through RS2232. The trigger generates a corresponding trigger signal through The D/A is converted into an analog current signal, which controls the relay to be closed, thereby lighting up the LED lamp where the student is located. The teacher can know the attendance status of the students according to the on-off status of each LED light 2 on the indicator panel 1, which greatly improves the efficiency of roll call and saves classroom time. the

It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from all points of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to fall within the scope of the claims All changes within the meaning and range of equivalents of the required elements are included in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned. the

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art. the

Claims (4)

1. a Multifunctional desk, comprise a body (1), it is characterized in that, described table body (1) comprises desktop, drawer (2), electronics roll-call device (4), table tripe (6), table leg (7), table cabinet (9), wheel (10) and positioning component, described desktop comprises table dormant panel (3) and the drawing board (5) for Freehandhand-drawing drawing, under described drawer (2) is arranged on table dormant panel (3), described table cabinet (9) is arranged on the below of drawer (2), described drawing board (5) is arranged on a tripe (6), described drawing board (5) is articulated with desktop and is positioned it by positioning component and adjust angle of inclination, described positioning component comprise two connecting rods (13) being connected to and forming four-bar linkage between drawing board (5) and desktop and with two connecting rods (13) by the hinged backstay (14) of same jointed shaft (15), described backstay (14) is provided with and can be stuck in the fixing multiple draw-in grooves in desktop edge, described table leg (7) is provided with two, be arranged on a tripe (6) both sides, described table cabinet (9) and table leg (7) support whole table body (1), described wheel (10) is provided with six, be separately positioned under two table legs (7) and four, table cabinet (9) bottom surface corner, described table cabinet (9) is provided with cabinet door (12), described electronics roll-call device (4) comprises the switch be installed on table dormant panel (3), be connected to the A/D converter of switch, be connected to the DS1302 clock chip of A/D converter, that control end is connected to DS1302 clock chip and store the buffer register of name Chinese character ANSII code, be connected to the RS2232 address card one of buffer register output, by the RS2232 address card two that RS232 data wire is connected with RS2232 address card one, the trigger being connected to RS2232 address card two and the indication panel be installed on dais.

2. Multifunctional desk according to claim 1, is characterized in that, described cabinet door (12) is by being fixed on cupboard front openings place by the hinge (11) in left side, size and cupboard equal and opposite in direction.

3. Multifunctional desk according to claim 1, is characterized in that, the right side of described table cabinet (9) is provided with two hooks (8).

4. Multifunctional desk according to claim 1, it is characterized in that, indication panel is provided with some LED, LED is connected to power supply through relay, the control end of each relay is connected to each output pin of trigger through D/A converter, indication panel is positioned at the cardboard be fixed with above LED for writing into name.