Classroom preemptive answering device

Abstract

The utility model relates to the technical field of preemptive answering equipment, in particular to a classroom preemptive answering device which comprises a base, a pressing cap inserted in the base in a sliding mode, an elastic piece installed between the base and the pressing cap and a suction cup installed in the base, a negative pressure unit is installed in the base, and the suction cup is communicated with the negative pressure unit. According to the scheme, the sucking disc and the negative pressure unit are arranged in the base, so that when the answering device is placed on the desk, the answering device can be adsorbed and positioned on the desk, meanwhile, when a student answers each time, a pressing cap is pressed down, a pressing plate in the pressing cap can be driven to trigger an air exhaust part, and the air exhaust part is driven to exhaust air. Therefore, the suction cup is more stably adsorbed, and the situation that the preemptive answering device deviates and falls off due to the fact that the panting force is too large during preemptive answering is avoided.

Description

Technical Field

[0001] This utility model relates to the field of answer-grabbing equipment technology, specifically a classroom answer-grabbing device. Background Technology

[0002] A classroom quiz device is an interactive tool used in the classroom teaching environment. It allows students to answer questions posed by the teacher by pressing buttons or other operations, helping the teacher to quickly and fairly identify the students who answer the questions, and increasing the fun of the class and student participation.

[0003] In current classrooms, when conducting fun lessons, such as quiz competitions, a buzzer device needs to be added to both students' desks to make the competition more interesting. However, conventional buzzer devices are usually standalone products placed on the desks. When students buzz in, they can easily move the device by tapping it, and repeated tapping can easily cause the device to fall off the desk. Utility Model Content

[0004] The purpose of this invention is to provide a classroom quiz buzzer device to solve the problem that existing classroom quiz buzzers are prone to falling off during the quiz.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A classroom quiz-taking device includes a base, a button that is slidably inserted into the base, an elastic element installed between the base and the button, a suction cup installed in the base, a negative pressure unit installed in the base, and the suction cup communicating with the negative pressure unit, so that the suction cup is negatively attracted to the desk through the negative pressure unit.

[0007] Preferably, the elastic element includes a mating ring fixed to the inner wall of the base and the bottom of the button, a return spring fixed between the two mating rings, a connecting post fixed on the mating ring located on the inner wall of the base to be inserted into the other mating ring, and a limit block fixed on the top of the connecting post.

[0008] Preferably, the negative pressure unit includes a negative pressure tube fixed in the base, an adjusting rod slidably inserted in the negative pressure tube, a piston plate that fits against the inner wall of the negative pressure tube slidably sleeved on the outer side of the adjusting rod, and an end plate fixed to one end of the adjusting rod inside the negative pressure tube. A buffer spring is installed between the end plate and the piston plate. A limiting groove is formed in the negative pressure tube, and a limiting strip that matches the limiting groove is fixed to the outer end of the adjusting rod. A connecting part that connects with the suction cup is installed on the negative pressure unit.

[0009] Preferably, the connecting part includes an airway tube connected to one end of the negative pressure tube, and an air pipe is fixedly connected to the airway tube and fixedly connected to the suction cup through the air pipe.

[0010] Preferably, an adjusting tube is fixedly connected to the airway tube, an air extraction part is installed inside the adjusting tube, and a pressing plate adapted to the air extraction part is fixed to the bottom of the pressing cap.

[0011] Preferably, the air extraction unit includes a telescopic rod fixed inside the regulating pipe, with piston blocks fixed at both ends of the telescopic rod, and a tension spring fixed to the two piston blocks fitted on the outer side of the telescopic rod, and an inclined block adapted to the pressing plate fixed at the outer end of the piston block.

[0012] Preferably, the outer end of the limiting groove is chamfered.

[0013] Preferably, a rubber ring is fixed to the bottom of the base.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] The suction cup and negative pressure unit inside the base in this solution allow the answer-grabbing device to be attached and positioned on the desk when placed there. At the same time, when a student presses the button to answer, it will trigger the air extraction unit inside the button, making the suction cup more stable and preventing the answer-grabbing device from shifting or falling due to excessive force during the answer. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a partial cross-sectional view of the internal structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the internal elastic element structure of this utility model;

[0019] Figure 4 This is a partial cross-sectional rear side view of the present invention;

[0020] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0021] Figure 6 This is a schematic diagram showing the connection between the negative pressure unit and the air extraction part of this utility model.

[0022] The components represented by each number in the attached diagram are listed below: 1. Base; 2. Button; 3. Elastic component; 4. Suction cup; 5. Negative pressure unit; 6. Connecting ring; 7. Return spring; 8. Connecting column; 9. Negative pressure tube; 10. Adjusting rod; 11. Piston plate; 12. End plate; 13. Buffer spring; 14. Limiting groove; 15. Limiting strip; 16. Connecting part; 17. Air passage tube; 18. Adjusting tube; 19. Air extraction part; 20. Pressing plate; 21. Telescopic rod; 22. Piston block; 23. Tension spring; 24. Inclined block; 25. Rubber ring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] like Figure 1 - Figure 4 As shown in the figure, a classroom quiz device is characterized by including a base 1, a button 2 slidably inserted in the base 1, an elastic element 3 installed between the base 1 and the button 2, a suction cup 4 installed in the base 1, a negative pressure unit 5 installed in the base 1, the suction cup 4 communicating with the negative pressure unit 5, and the suction cup 4 adsorbing against the desk under negative pressure through the negative pressure unit 5.

[0025] Specifically: By manipulating the negative pressure unit 5, the suction cup 4 generates an adhesive force, thus being able to stably adhere to the desk. When students answer questions, they press the cap 2, which is reset by the elastic element 3. At the same time, the base 1 can also be stably placed on the desk without shifting or falling off.

[0026] It should also be noted that an existing triggering device can be added between the base 1 and the button 2, which will produce a sound or light when touched.

[0027] For further details, please refer to [link / reference]. Figure 3 The elastic element 3 includes a docking ring 6 fixed to the inner wall of the base 1 and the bottom of the cap 2. A return spring 7 is fixed between the two docking rings 6. A connecting post 8 that is inserted into another docking ring 6 is fixed on the docking ring 6 located on the inner wall of the base 1. A limit block is fixed on the top of the connecting post 8.

[0028] When a person presses the cap 2, it will squeeze the reset spring 7, and the cap 2 will move down and make contact with the built-in trigger device, producing a sound or light to indicate that the answer was successful. Then, the reset spring 7 will move the cap 2 up to reset it, making it easy to press in the next round of answering.

[0029] Further reference Figure 6The negative pressure unit 5 includes a negative pressure tube 9 fixed in the base 1, an adjusting rod 10 slidably inserted in the negative pressure tube 9, a piston plate 11 that fits against the inner wall of the negative pressure tube 9 is slidably sleeved on the outside of the adjusting rod 10, an end plate 12 is fixed at one end of the adjusting rod 10 inside the negative pressure tube 9, a buffer spring 13 is installed between the end plate 12 and the piston plate 11, a limit groove 14 is opened in the negative pressure tube 9, a limit strip 15 that matches the limit groove 14 is fixed at the outer end of the adjusting rod 10, and a connecting part 16 that connects with the suction cup 4 is installed on the negative pressure unit 5.

[0030] The connecting part 16 includes an airway tube 17 connected to one end of the negative pressure tube 9. An air pipe is fixedly connected to the airway tube 17 and is fixedly connected to the suction cup 4 through the air pipe.

[0031] Personnel can operate the device fixed on the table:

[0032] First, the personnel wipe the area where the device needs to be placed, using a damp towel, and clean the bottom of the suction cup 4 to avoid dust residue, and move the adjusting rod 10 to the innermost end of the negative pressure tube 9;

[0033] Afterwards, the personnel place the base 1 in the area after wiping, and pull the adjusting rod 10 outward until the limiting strip 15 moves out of the limiting groove 14, and rotate the adjusting rod 10 so that the limiting strip 15 abuts against the outer end of the negative pressure tube 9 to complete the positioning.

[0034] It should be noted that the negative pressure inside the negative pressure tube 9 is generated by the outward movement of the piston plate 11, which in turn creates negative pressure in the airway tube 17 and the airway, thereby allowing the suction cup 4 to be stably attached to the table.

[0035] In this design, a chamfer is provided at the outer end of the limiting groove 14 to facilitate the re-connection of the limiting strip 15 with the limiting groove 14.

[0036] It should also be noted that, since students will tap the button 2 when answering questions, the base 1 will also be subjected to force and move downward. In order to prevent the base from contacting the table and causing collisions, a rubber ring 25 is fixed at the bottom of the base 1.

[0037] In some preferred embodiments, such as Figure 4 An adjusting tube 18 is fixedly connected to the airway tube 17. An air extraction part 19 is installed inside the adjusting tube 18. A pressing plate 20 adapted to the air extraction part 19 is fixed to the bottom of the pressing cap 2.

[0038] Also see Figure 5 The air extraction unit 19 includes a telescopic rod 21 fixed inside the regulating pipe 18. Piston blocks 22 are fixed at both ends of the telescopic rod 21. A tension spring 23 fixed to the two piston blocks 22 is sleeved on the outside of the telescopic rod 21. An inclined block 24 adapted to the pressing plate 20 is fixed at the outer end of the piston block 22.

[0039] The principle behind improving the adsorption stability of the quiz buzzer device when it is pressed or impacted by the air extraction section 19 is as follows:

[0040] Each time the cap 2 is struck, the cap 2 moves downward, causing the pressing plate 20 to move downward synchronously and come into contact with the inclined block 24, pushing the inclined block 24 outward, causing the two piston blocks 22 to move outward synchronously, thereby increasing the negative pressure in the regulating tube 18, increasing the negative pressure in the air pipe 17 and the negative pressure pipe 9, thereby increasing the suction force of the suction cup 4. After the knocking ends, the cap 2 moves upward to reset through the reset spring 7, and under the action of the tension spring 23, the two piston blocks 22 reset, and the piston plate 11 is pushed open by the buffer spring 13, so that the air pressure in the negative pressure pipe 9 and the air pipe 17 is in a balanced state, and the internal air pressure will not increase due to the retraction of the piston block 22, thus affecting the adsorption.

[0041] This design avoids the device from shifting due to heavy impact from personnel, and increases the adsorption force and improves adsorption stability with each impact.

[0042] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A classroom quiz-taking device, characterized in that, The device includes a base (1), a button (2) is slidably inserted in the base (1), an elastic element (3) is installed between the base (1) and the button (2), and a suction cup (4) installed in the base (1). A negative pressure unit (5) is installed in the base (1), and the suction cup (4) is connected to the negative pressure unit (5). The suction cup (4) is negatively attracted to the desk through the negative pressure unit (5).

2. The classroom quiz-taking device according to claim 1, characterized in that: The elastic element (3) includes a docking ring (6) fixed to the inner wall of the base (1) and the bottom of the button (2), a reset spring (7) is fixed between the two docking rings (6), a connecting post (8) that is inserted into the docking ring (6) located on the inner wall of the base (1) is fixed, and a limit block is fixed on the top of the connecting post (8).

3. The classroom quiz-taking device according to claim 1, characterized in that: The negative pressure unit (5) includes a negative pressure tube (9) fixed in the base (1), an adjusting rod (10) is slidably inserted in the negative pressure tube (9), a piston plate (11) that fits against the inner wall of the negative pressure tube (9) is slidably sleeved on the outside of the adjusting rod (10), and an end plate (12) is fixed at one end of the adjusting rod (10) inside the negative pressure tube (9), a buffer spring (13) is installed between the end plate (12) and the piston plate (11), a limiting groove (14) is opened in the negative pressure tube (9), and a limiting strip (15) that matches the limiting groove (14) is fixed at the outer end of the adjusting rod (10), and a connecting part (16) that connects with the suction cup (4) is installed on the negative pressure unit (5).

4. A classroom quiz-taking device according to claim 3, characterized in that: The connecting part (16) includes an airway tube (17) connected to one end of the negative pressure tube (9). An air pipe is fixedly connected to the airway tube (17) and is fixedly connected to the suction cup (4) through the air pipe.

5. A classroom quiz-taking device according to claim 4, characterized in that: An adjusting tube (18) is fixedly connected to the airway tube (17), and an air extraction part (19) is installed inside the adjusting tube (18). A pressing plate (20) adapted to the air extraction part (19) is fixed at the bottom of the pressing cap (2).

6. A classroom quiz-taking device according to claim 5, characterized in that: The air extraction unit (19) includes a telescopic rod (21) fixed inside the regulating pipe (18). Piston blocks (22) are fixed at both ends of the telescopic rod (21), and a tension spring (23) fixed to the two piston blocks (22) is sleeved on the outside of the telescopic rod (21). An inclined block (24) adapted to the pressing plate (20) is fixed at the outer end of the piston block (22).

7. A classroom quiz-taking device according to claim 3, characterized in that: The outer end of the limiting groove (14) is chamfered.

8. A classroom quiz-taking device according to claim 7, characterized in that: A rubber ring (25) is fixed to the bottom of the base (1).

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