Non-contact instruction button for coal mine

Abstract

The utility model discloses a non-contact instruction button for a coal mine, which relates to the technical field of buttons and comprises a mounting panel, a bottom cover is mounted at the top end of the mounting panel, a shell is fixedly mounted at the top end of the bottom cover, a push rod is movably mounted in the center of the interior of the shell, and a key is fixedly connected to the top end of the push rod. The center position of the bottom of the push rod is connected with a permanent magnet through glue. According to the utility model, in the use process, no contact is arranged in the magnetic induction switch, only one small-sized permanent magnet moves up and down along with pressing of the key, when the key is pressed down, the push rod moves downwards along with the key, the permanent magnet at the bottom of the push rod moves to the lowest end, and the metal reed in the magnetic induction switch is magnetized due to the enhancement of a magnetic field, so that the magnetic induction switch is magnetized. Similarly, when the key is released, the permanent magnet is far away, the magnetic field is weakened, the reed is demagnetized and resets by virtue of the elasticity of the spring, and the circuit is disconnected.

Description

Technical Field

[0001] This utility model specifically relates to the field of button technology, and more specifically to a non-contact command button used in coal mines. Background Technology

[0002] Currently, electrical operation is widespread in underground coal mines. However, because electrical contacts are prone to generating sparks, which can easily cause deflagration accidents in environments filled with methane gas, all electrical equipment underground must undergo coal mine safety certification before it can be deployed. Electrical command switches are buttons operated by humans. When a hand presses a button, the manual command is transmitted to the control system through the button's contacts, thereby completing the manual control of the equipment's actions. Utility Model Content

[0003] The purpose of this invention is to provide a non-contact command button for use in coal mines. During use, it has no internal contacts, only a small permanent magnet that moves up and down as the button is pressed. When the button is pressed, the push rod moves downwards with the button, and the permanent magnet at the bottom of the push rod moves to its lowest point. The increased magnetic field magnetizes the metal spring inside the magnetic induction switch. The magnetized spring closes due to the attraction of opposite poles, completing the circuit and opening the switch. Similarly, when the button is released, the permanent magnet moves away, the magnetic field weakens, the spring is demagnetized, and the spring returns to its original position, breaking the circuit. This solves the technical problems mentioned in the background section.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A non-contact command button for use in coal mines includes a mounting panel, a bottom cover mounted on the top of the mounting panel, and a housing fixedly mounted on the top of the bottom cover. A push rod is movably mounted at the center of the interior of the housing, and a button is fixedly connected to the top of the push rod. A permanent magnet is glued to the center of the bottom of the push rod.

[0006] As a further technical solution of this utility model, a lower seal is provided between the bottom cover and the housing, and an upper seal is provided between the opening at the top of the housing and the push rod.

[0007] As a further technical solution of this utility model, a magnetic induction switch is installed at the bottom of the mounting panel, and the magnetic induction switch is located directly below the permanent magnet.

[0008] As a further technical solution of this utility model, the magnetic induction switch is a reed switch structure, which is a sealed structure with two magnetizable metal reeds inside, and is encapsulated with inert gas inside.

[0009] As a further technical solution of this utility model, the bottom of the push rod is a circular ring structure, and the inner wall of the bottom of the push rod is fixedly connected to the permanent magnet. The push rod is a cross-shaped structure with limit blocks integrally formed on both sides.

[0010] As a further technical solution of this utility model, a spring is installed between the button and the housing, and the spring is sleeved on the outside of the push rod.

[0011] As a further technical solution of this utility model, a spring is installed between the inner wall of the shell and the limiting block.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In this invention, there are no internal contacts during use; there is only a small permanent magnet that moves up and down as the button is pressed. When the button is pressed, the push rod moves downward with the button, and the permanent magnet at the bottom of the push rod moves to the lowest point. The increased magnetic field magnetizes the metal spring inside the magnetic induction switch. The magnetized spring closes due to the attraction between opposite poles, and the circuit is connected, completing the opening process. Similarly, when the button is released, the permanent magnet moves away, the magnetic field weakens, the spring is demagnetized, and it resets due to the elasticity of the spring, breaking the circuit. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the present invention in a static state.

[0015] Figure 2 This is a schematic diagram of the present invention in operation.

[0016] Figure 3 This is a partial structural schematic diagram of the present invention.

[0017] Figure 4 This utility model Figure 3 Exploded view.

[0018] Figure 5 This is a utility model Figure 4 Another perspective view of the middle shell.

[0019] Figure 6 This utility model Figure 3 Internal structure diagram.

[0020] Figure 7 This is a modified diagram of this utility model.

[0021] In the diagram: 1-Mounting panel, 2-Bottom cover, 3-Housing, 4-Lower seal, 5-Push rod, 6-Button, 7-Permanent magnet, 8-Upper seal, 9-Magnetic induction switch, 10-Spring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-7 In this embodiment of the utility model, there is an installation panel 1, a bottom cover 2 is installed on the top of the installation panel 1, and a housing 3 is fixedly installed on the top of the bottom cover 2. A push rod 5 is movably installed at the center of the interior of the housing 3, and a button 6 is fixedly connected to the top of the push rod 5. A permanent magnet 7 is glued to the center of the bottom of the push rod 5.

[0024] In this embodiment, a lower seal 4 is provided between the bottom cover 2 and the housing 3, and an upper seal 8 is provided between the top opening of the housing 3 and the push rod 5;

[0025] By adopting the above technical solution, the sealing performance of the upper and lower ends of the housing 3 can be achieved. By enclosing the sliding structure of the push rod 5 inside the sealed space of the housing 3, external dust can be prevented from entering the inside of the button while it is in motion.

[0026] In this embodiment, a magnetic induction switch 9 is installed at the bottom of the mounting panel 1, and the magnetic induction switch 9 is located directly below the permanent magnet 7.

[0027] By adopting the above technical solution, the magnetic induction switch 9 can control the switching process of the magnetic induction switch 9 by changing the magnetic field at the position of the magnetic induction switch 9 during the up-down movement of the permanent magnet 7.

[0028] In this embodiment, the magnetic induction switch 9 is a reed switch structure, which is a sealed structure with two magnetizable metal reeds inside, and is encapsulated with inert gas inside.

[0029] By adopting the above technical solution, during the up-and-down movement of the permanent magnet 7, the metal spring inside the magnetic induction switch 9 can be magnetized. When the permanent magnet 7 approaches, the spring is magnetized and closes due to the attraction of opposite poles, and the circuit is turned on. When the permanent magnet 7 moves away, the spring is demagnetized and resets due to the elasticity of the spring, and the circuit is turned off.

[0030] In this embodiment, the bottom of the push rod 5 is a circular ring structure, and the inner wall of the bottom of the push rod 5 is fixedly connected to the permanent magnet 7. The push rod 5 is a cross-shaped structure, and the two sides are integrally formed with limit blocks.

[0031] By adopting the above technical solution, the circular ring structure at the bottom of the push rod 5 allows the cylindrical permanent magnet 7 to fit better inside it. At the same time, the permanent magnet 7 is installed using a special adhesive process, which is resistant to high temperatures and can work in harsh environments for a long time without failure.

[0032] In this embodiment, a spring 10 is installed between the button 6 and the housing 3, and the spring 10 is sleeved on the outside of the push rod 5;

[0033] In this embodiment, a spring 10 is installed between the inner wall of the housing 3 and the limiting block;

[0034] By adopting the above technical solution and through the above two examples, the spring 10 can be external or internal, and both can realize the function of the instruction button of this solution.

[0035] The working principle of this utility model is as follows: During use, since there are no internal contacts, there is only a small permanent magnet 7, which moves up and down with the pressing of button 6. When button 6 is pressed, push rod 5 moves downward with button 6, and permanent magnet 7 located at the bottom of push rod 5 moves to the lowest end. The increase in magnetic field magnetizes the metal spring inside magnetic induction switch 9. The magnetized spring closes due to the attraction of opposite poles, and the circuit is connected, completing the opening process. Similarly, when button 6 is released, permanent magnet 7 moves away, magnetic field weakens, spring is demagnetized and resets due to the elasticity of spring 10, and circuit is disconnected.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A non-contact command button for use in coal mines, characterized in that: The device includes a mounting panel (1), a bottom cover (2) is mounted on the top of the mounting panel (1), and a housing (3) is fixedly mounted on the top of the bottom cover (2). A push rod (5) is movably mounted at the center of the housing (3), and a button (6) is fixedly connected to the top of the push rod (5). A permanent magnet (7) is glued to the center of the bottom of the push rod (5). A lower seal (4) is provided between the bottom cover (2) and the housing (3), and an upper seal (8) is provided between the top opening of the housing (3) and the push rod (5). The bottom of the mounting panel (1) is equipped with a magnetic induction switch (9), and the magnetic induction switch (9) is located directly below the permanent magnet (7); the magnetic induction switch (9) is a reed switch structure, which is a sealed structure with two magnetizable metal reeds inside, and is encapsulated with inert gas inside.

2. The non-contact command button for coal mines according to claim 1, characterized in that: The bottom of the push rod (5) is a circular ring structure, and the inner wall of the bottom of the push rod (5) is fixedly connected to the permanent magnet (7). The push rod (5) is a cross-shaped structure with integrated limit blocks on both sides.

3. The non-contact command button for coal mines according to claim 1, characterized in that: A spring (10) is installed between the button (6) and the housing (3), and the spring (10) is sleeved on the outside of the push rod (5).

4. The non-contact command button for coal mines according to claim 3, characterized in that: A spring (10) is installed between the inner wall of the housing (3) and the limiting block.

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