Inductance type proximity switch for remote detection

Abstract

The utility model discloses a long-distance detection inductance type proximity switch, comprising an adjusting housing which is arranged to be a cylindrical housing structure, the top end of the adjusting housing is slidably connected with a probe housing, the bottom end of the adjusting housing is connected with a shielding cable, and the output end of the shielding cable is in butt joint with the butt joint end of an instrument cable; a connecting part of the inductance type proximity switch is formed; and a mounting shell is arranged at the bottom end of the adjusting shell, the mounting shell is of a conical structure, and a shielding cable penetrates through the bottom end of the mounting shell. According to the inductance type proximity switch for long-distance detection, an installation limiting environment is provided for the interior of the device through sealing equipment between the probe shell installed in the adjusting shell and the signal converter, and the installation limiting environment is provided for the interior of the device through sliding connection between the adjusting shell and the probe shell; and with the arrangement of the damping piece, the devices are kept in a stable state for movable use, and suitable components are arranged in the adjusting shell or the probe shell.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical switches, in particular to an inductive proximity switch for long-distance detection. Background Art

[0002] Inductive proximity switches are a low-cost way to detect metal objects without contact. When a metal object moves toward or out of the proximity switch, the signal will automatically change, thereby achieving the purpose of detection. The inductive proximity switch consists of an IC oscillator circuit, a signal trigger, and a switch amplifier. The metal coil of the oscillator circuit generates a high-frequency variable magnetic field, which is released through the sensing surface of the sensor. When used, the switch is realized according to the induction principle of the inductive element. When it is necessary to monitor or control the approach or departure state of an object, the inductive proximity switch can realize the state conversion of the switch by inducing changes in the electromagnetic field.

[0003] During the use of existing inductive proximity switches, eddy currents can easily cause the device's recognition range to be affected by electromagnetic fluctuations, causing the internal sensor components to be damaged by the eddy currents at a faster rate. The existing device remains sealed as a whole, making inspection and replacement more difficult. In addition, the detection port of the existing inductive switch structure is fixed when in use, which limits its observation distance during installation and use in actual scenarios. Utility Model Content

[0004] The purpose of the utility model is to provide an inductive proximity switch for long-distance detection, so as to solve the problems mentioned in the above background technology that the sensor components are damaged by eddy currents at an accelerated rate, the existing device remains sealed as a whole, which increases the difficulty of inspection and replacement, and the existing inductive switch structure has a fixed detection port when in use, which limits its observation distance during installation and use in actual scenarios.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an inductive proximity switch for long-distance detection, comprising an adjusting housing, which is arranged as a cylindrical housing structure, the top of the adjusting housing is slidably connected with a probe housing, and the bottom of the adjusting housing is connected with a shielded cable, and the output end of the shielded cable is butted with the butt end of the instrument cable to form a connection part of the inductive proximity switch;

[0006] The bottom of the adjusting shell is provided with a mounting shell, and the mounting shell is provided with a conical structure, the bottom of the mounting shell is penetrated by a shielded cable, and a sealing ring is provided at the connection between the mounting shell and the shielded cable, and a signal detection component is provided inside the adjusting shell and the mounting shell, which cooperates with the components inside the probe shell to perform inductance detection and process the electrical signal;

[0007] The protective cover is snap-connected in the top opening of the probe housing. An oscillator is arranged inside the probe housing, and a metal coil is arranged outside the oscillator. The metal coil is arranged inside the probe housing, and a sealing ring is connected to the bottom end of the probe housing and the adjustment housing.

[0008] The above technical solution is adopted to increase the detection distance of the proximity switch and facilitate the detection work with the device.

[0009] Preferably, the mounting shell and the adjusting shell are an integral structure, and the outer wall surface of the adjusting shell is provided with threads, and a limiting partition is provided at the bottom end of the threads on the outer wall surface of the adjusting shell.

[0010] By adopting the above technical solution, the adjusting shell and the mounting shell are provided with a stable connection position.

[0011] Preferably, the limiting partition is installed on the surface of the adjusting shell, and the threaded connection on the surface of the adjusting shell is provided with a clamping nut.

[0012] By adopting the above technical solution, the limiting partition is located on the surface of the adjustment shell to limit the installation position of the clamping nut.

[0013] Preferably, the signal detection component comprises:

[0014] an amplifying output circuit, which is mounted at the bottom end of the probe housing;

[0015] A signal trigger is installed inside the probe housing and is electrically connected to the amplification output circuit;

[0016] A protective plate, which is mounted on the bottom end of the outer wall of the probe housing, and the protective plate is located inside the adjustment housing;

[0017] A controller is disposed inside the regulating housing and is electrically connected to the protective plate;

[0018] A signal converter installed inside the adjustment housing and the mounting shell;

[0019] The signal lamp is installed on one side of the signal converter, and the side of the signal converter provided with the signal lamp penetrates the adjustment housing.

[0020] By adopting the above technical solution, the signal detection component can easily process the received sensing signal.

[0021] Preferably, the amplifying output circuit is connected to the metal coil and the oscillator, and the amplifying output circuit is connected to the signal trigger through a line, and the signal trigger runs through the bottom end of the probe housing.

[0022] The above technical solution is adopted to facilitate the linkage operation of the amplifying output circuit with the metal coil and the oscillator to extend the sensing distance.

[0023] Preferably, the controller is installed on the upper end of the signal converter, and the signal converter is electrically connected to the controller.

[0024] By adopting the above technical solution, the controller provides docking installation for the signal converter.

[0025] Preferably, the signal converter is connected to a shielded cable, and a metal shielding mesh is wrapped inside the shielded cable and provided on the surface of the cable.

[0026] By adopting the above technical solution, as the signal converter is electrically connected to the shielded cable, the internal temperature is effectively converted.

[0027] Compared with the prior art, the utility model has the following beneficial effects: the inductive proximity switch for long-distance detection:

[0028] 1. During use, the probe housing installed in the adjustment housing and the signal converter are sealed to provide a limited installation environment inside the device. The adjustment housing and the probe housing are connected by sliding. With the setting of the damping member, the devices are kept in a stable state for active use. After the components applicable inside the adjustment housing or the probe housing are damaged by the impact of the accumulated eddy current, the probe housing and the adjustment housing are disassembled, so that the corresponding inductor equipment can be quickly replaced, providing a convenient processing and maintenance method for later maintenance and daily use. With the disassembly of the protective plate connected to the controller and the corresponding circuit set between the probe housing and the adjustment housing, it is convenient to disassemble and replace the probe housing and the adjustment housing;

[0029] 2. The limit partition installed on the outer wall of the adjusting shell provides a limit guide for the installation position of the clamping nut. At the same time, the probe shell that is slidably connected inside the adjusting shell facilitates the adjustment of the emission point of the high-frequency variable electromagnetic field emitted by the probe shell to the outside, further extending the detection distance of the probe shell. At the same time, a device that is arranged inside the probe shell to increase the current emitted by the internal oscillator through the amplifying output circuit effectively improves the stable limit installation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the overall external three-dimensional structure of the utility model;

[0031] Figure 2 This is a schematic diagram of the overall split three-dimensional structure of the utility model;

[0032] Figure 3 This is a schematic diagram of the three-dimensional structure of the adjustment housing and the probe housing of the utility model;

[0033] Figure 4 This is a schematic diagram of the three-dimensional structure of the inner side section of the regulating shell of the utility model;

[0034] Figure 5 This is a schematic diagram of the three-dimensional structure of the probe housing and the signal converter installed in the utility model;

[0035] Figure 6 For this utility model Figure 4 Enlarged structural diagram at A in the middle.

[0036] In the figure: 1. Adjustment shell; 2. Mounting shell; 3. Sealing ring; 4. Limiting partition; 5. Clamping nut; 6. Probe shell; 7. Protective cover; 8. Metal coil; 9. Oscillator; 10. Amplification output circuit; 11. Signal trigger; 12. Protective plate; 13. Controller; 14. Signal converter; 15. Signal light; 16. Shielded cable; 17. Instrument cable docking terminal. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] See also Figure 1-6 The utility model provides a technical solution: an inductive proximity switch for long-distance detection, comprising an adjustment housing 1, a mounting housing 2, a sealing ring 3, a limit partition 4, a clamping nut 5, a probe housing 6, a protective cover 7, a metal coil 8, an oscillator 9, an amplifying output circuit 10, a signal trigger 11, a protective plate 12, a controller 13, a signal converter 14, a signal lamp 15, a shielded cable 16 and an instrument cable docking terminal 17;

[0039] Among them, the adjusting housing 1 is set as a cylindrical housing structure, the top of the adjusting housing 1 is slidably connected with the probe housing 6, and the bottom of the adjusting housing 1 is connected with the shielded cable 16, and the output end of the shielded cable 16 is connected with the instrument cable docking end 17 to form the connection part of the inductive proximity switch;

[0040] A mounting shell 2 is provided at the bottom of the adjusting shell 1, and the mounting shell 2 is a conical structure. The bottom of the mounting shell 2 is penetrated by the shielded cable 16, and a sealing ring 3 is provided at the connection between the mounting shell 2 and the shielded cable 16. Signal detection components are provided inside the adjusting shell 1 and the mounting shell 2 to cooperate with the components inside the probe shell 6 to perform inductance detection and process electrical signals. The mounting shell 2 and the adjusting shell 1 are an integrated structure, and the outer wall surface of the adjusting shell 1 is provided with threads, and a limiting partition 4 is provided at the bottom end of the threads on the outer wall surface of the adjusting shell 1. The limiting partition 4 is installed on the surface of the adjusting shell 1, and the threads on the surface of the adjusting shell 1 are connected with a clamping nut 5;

[0041] A protective cover 7 is snap-fitted into the top opening of the probe housing 6. An oscillator 9 is disposed inside the probe housing 6, and a metal coil 8 is disposed outside the oscillator 9. The metal coil 8 is disposed inside the probe housing 6, and a sealing ring is connected between the bottom end of the probe housing 6 and the adjustment housing 1;

[0042] In conjunction with the accompanying drawings Figure 1-6 As shown, the mounting shell 2 installed at the bottom end of the adjusting shell 1 is an integrated injection molding structure. With the conical setting of the mounting shell 2, it is convenient to converge the installation position of the internal signal converter 14. The threaded structure arranged on the outer wall of the adjusting shell 1 provides a movable direction for the installation of the clamping nut 5. With the clamping nut 5 and more than two clamping nuts 5 connected with the surface thread of the adjusting shell 1, the adjusting shell 1 is assisted to perform position limiting installation. The sealing ring 3 arranged at the bottom end of the mounting shell 2 is used to maintain the stability of the connection with the shielded cable 16. At the same time, when the shielded cable 16 passes through different positions for installation, it provides protection against excessive extrusion of the bent shielded cable 16, which causes damage to the connection with the mounting shell 2. With the sealing ring 3 providing protection for the installation of the end face of the shielded cable 16, the position The instrument cable docking end 17 arranged at the other end of the shielded cable 16 is docked with the corresponding detection equipment, so as to facilitate the transmission of the wires to the outside through the internal cables of the shielded cable 16, wherein the instrument cable docking end 17 is directly connected to the corresponding two detection devices, and a probe shell 6 is arranged in a sliding connection at the top of the adjustment shell 1, and a corresponding damping member is sleeved on the outer wall of the probe shell 6 to prevent the probe shell 6 from quickly opening and separating during the outward sliding and pushing process, wherein the protective cover 7 arranged at the top of the probe shell 6 is used to provide a corresponding protection effect, wherein the metal coil 8 arranged inside the probe shell 6 is arranged in a concentric circle with the oscillator 9, and the metal coil 8 is an eddy current coil, and the metal coil 8 cooperates with the oscillator 9 to generate an alternating magnetic field to form a high-frequency variable electric field for sensing of nearby objects;

[0043] The signal detection components include:

[0044] The amplifying output circuit 10 is installed at the bottom of the probe housing 6, the amplifying output circuit 10 is connected to the metal coil 8 and the oscillator 9, and the amplifying output circuit 10 is connected to the signal trigger 11 through a line, and the signal trigger 11 runs through the bottom of the probe housing 6;

[0045] A signal trigger 11 is installed inside the probe housing 6 and is electrically connected to the amplification output circuit 10;

[0046] A protective plate 12 is mounted on the bottom end of the outer wall of the probe housing 6, and the protective plate 12 is located inside the adjustment housing 1;

[0047] A controller 13 is disposed inside the regulating housing 1 and electrically connected to the protective plate 12. The controller 13 is mounted on the upper end of the signal converter 14 and the signal converter 14 is electrically connected to the controller 13.

[0048] The signal converter 14 is installed inside the adjustment housing 1 and the installation housing 2. The signal converter 14 is connected to the shielded cable 16, and the shielded cable 16 is wrapped with a metal shielding net on the cable surface;

[0049] A signal lamp 15 is installed on one side of the signal converter 14, and the side of the signal converter 14 provided with the signal lamp 15 penetrates the adjustment housing 1;

[0050] In conjunction with the accompanying drawings Figure 1-6 As shown, the amplifier output circuit 10 arranged at the bottom end of the probe housing 6 is connected to the signal trigger 11 through a cable, wherein the oscillator 9 and the metal coil 8 are connected to the amplifier output circuit 10, and the signal output from the oscillator 9 and the metal coil 8 is processed by the amplifier output circuit 10. With the power amplification, the overall circuit has high efficiency, which can reduce energy loss and heat generation, and improve the reliability and life of the circuit. The signal connection end of the signal trigger 11 installed at the bottom end of the probe housing 6 passes through, and when a conductive object approaches the electromagnetic field proximity switch through the signal trigger 11, eddy currents are generated inside the object, and the eddy currents react to make the electric field inside the eddy currents The circuit parameters change, and the signal trigger 11 thereby identifies whether a conductive object is approaching, so that the signal trigger 11 is connected to the circuit of the protective plate 12, so that the controller 13 receives the electrical signal of the signal trigger 11, and transmits it to the signal converter 14 and the signal light 15 through the signal trigger 11. The signal light 15 emits a bright light to prompt the user that an object appears within the detection range. At the same time, the signal converter 14 converts the signal and sends it to the device connected to the shielded cable 16. As the probe housing 6 slides to extend the device as a whole, the electromagnetic field distance emitted by the protective cover 7 at the output end of the probe housing 6 is adjusted, so that the induction switch can further extend the detection range within the fixed installation area.

[0051] Working principle: When using the inductive proximity switch for long-distance detection, the signal converter 14 is installed inside the adjustment shell 1 and the installation shell 2, and the metal coil 8 and the oscillator 9 cooperate to generate a high-frequency variable magnetic field, and the long-distance range is legendary with the help of the amplifying output circuit 10. When the metal material is close to the detection sensing end position of the probe shell 6 with a protective cover 7, induction is performed, and the oscillator 9 and the signal trigger 11 are jointly received. Due to the current rheology generated by the object entering the detection range of the high-frequency variable magnetic field, it is amplified by the high-frequency variable magnetic field and the amplifying output circuit 10, and further switch detection is provided for the long-distance object. After that, the signal trigger 11 sends an object detection electrical signal to the signal converter 14, so that the signal lamp 15 set on one side of the signal converter 14 receives the corresponding electrical signal and lights up. At the same time, the shielded cable 16 and the instrument cable docking end 17 transmit the electrical signal of the signal converter 14 to the connected device, thereby increasing the overall practicality.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An inductive proximity switch for long-distance detection, comprising: The adjusting housing (1) is configured as a cylindrical housing structure, the top end of the adjusting housing (1) is slidably connected to a probe housing (6), the bottom end of the adjusting housing (1) is connected to a shielded cable (16), and the output end of the shielded cable (16) is connected to an instrument cable connection end (17), forming a connection part of an inductive proximity switch; The invention is characterized in that: a mounting shell (2) is arranged at the bottom of the adjusting shell (1), and the mounting shell (2) is arranged in a conical structure, a shielded cable (16) penetrates the bottom of the mounting shell (2), and a sealing ring (3) is arranged at the connection between the mounting shell (2) and the shielded cable (16), and a signal detection component is arranged inside the adjusting shell (1) and the mounting shell (2), and performs inductance detection in cooperation with the components inside the probe shell (6) to process the electrical signal; A protective cover (7) is snap-connected to the top opening of the probe housing (6); an oscillator (9) is arranged inside the probe housing (6), and a metal coil (8) is arranged outside the oscillator (9); the metal coil (8) is arranged inside the probe housing (6), and a sealing ring is connected between the bottom end of the probe housing (6) and the adjustment housing (1).

2. The inductive proximity switch for long-distance detection according to claim 1, characterized in that: The mounting shell (2) and the adjusting shell (1) are an integral structure, the outer wall surface of the adjusting shell (1) is provided with threads, and a limiting partition plate (4) is provided at the bottom end of the threads on the outer wall surface of the adjusting shell (1).

3. The inductive proximity switch for long-distance detection according to claim 2, characterized in that: The limiting partition plate (4) is mounted on the surface of the adjusting housing (1), and a clamping nut (5) is threadedly connected to the surface of the adjusting housing (1).

4. The inductive proximity switch for long-distance detection according to claim 1, characterized in that: The signal detection component comprises: an amplifying output circuit (10), which is mounted at the bottom end of the probe housing (6); A signal trigger (11), which is installed inside the probe housing (6), and the signal trigger (11) is electrically connected to the amplification output circuit (10); A protective plate (12) is mounted on the bottom end of the outer wall of the probe housing (6), and the protective plate (12) is located inside the adjustment housing (1); A controller (13) is arranged inside the regulating housing (1), and the controller (13) is electrically connected to the protective plate (12); A signal converter (14) installed inside the adjustment housing (1) and the mounting housing (2); A signal light (15) is installed on one side of the signal converter (14), and the side of the signal converter (14) provided with the signal light (15) penetrates the adjustment housing (1).

5. The inductive proximity switch for long-distance detection according to claim 4, characterized in that: The amplifying output circuit (10) is connected to the metal coil (8) and the oscillator (9), and the amplifying output circuit (10) is connected to the signal trigger (11) through a line, and the signal trigger (11) passes through the bottom end of the probe housing (6).

6. The inductive proximity switch for long-distance detection according to claim 4, characterized in that: The controller (13) is installed on the upper end of the signal converter (14), and the signal converter (14) is electrically connected to the controller (13).

7. The inductive proximity switch for long-distance detection according to claim 4, characterized in that: The signal converter (14) is connected to a shielded cable (16), and a metal shielding net is wrapped inside the shielded cable (16) and provided on the surface of the cable.

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