Proximity switch with safety protection mechanism

Abstract

According to the proximity switch with the safety protection mechanism provided by the utility model, the sensor, the switch main body and the cable are protected by additionally arranging the protective cover and the protective shell, and meanwhile, the sealing effect is improved by additionally arranging the sealing rubber pad at the locking position of the left protective shell and the right protective shell, so that the proximity switch has the characteristics of dust prevention, water prevention, corrosion prevention and the like; a novel material is used, the device can adapt to severe environments such as high temperature, low temperature and humidity, the mounting structure is optimized, the mounting seat and the buffer rubber mat are additionally arranged, the device has a shockproof function, and the impact resistance and the stability of the device are improved; a conversion module and a communication module in the control assembly can perform signal conversion and remote transmission, so that remote monitoring and remote alarm functions are realized, wide application in the fields of industrial automation, intelligence and security is realized, and the battery assembly is provided with a charging port and a port plug to supply energy to normal operation of the proximity switch and the control assembly.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of proximity switches, in particular to a proximity switch with a safety protection mechanism. BACKGROUND

[0002] A proximity switch is a sensor that can detect the position or movement of an object without direct contact with the detection object. It senses the proximity of an object through electromagnetic induction, photoelectric effect, etc. and outputs corresponding electrical signals. Proximity switches are widely used in automated production lines, machining equipment, robots, etc. for position detection, counting control, safety protection, etc. With the continuous improvement of industrial automation and intelligence, proximity switches, as an important sensor component, are increasingly widely used in various fields. However, there are still some problems in safety protection that need to be solved.

[0003] Current proximity switch types may cause misoperation and damage to switch components in some complex industrial environments, such as electromagnetic interference, strong vibration, liquid splashing, dust intrusion, etc., thereby affecting the safe operation of equipment. Moreover, most current proximity switches are severely affected in extreme environments with low temperature, high temperature, high humidity, and strong corrosion. Concealed proximity switches have good protection performance but small sensing range, while non-concealed proximity switches have wide sensing range but are prone to damage. They cannot simultaneously accommodate different application scenarios, increasing the budget. In addition, current proximity switch types lack remote monitoring and remote alarm functions, which cannot be better applied in the fields of security, automation, and intelligence. CONTENT OF THE INVENTION

[0004] In view of the above prior art, the technical problem to be solved by the present application is:

[0005] To enhance the anti-shock function and anti-interference ability of the proximity switch, enhance the environmental adaptability of the proximity switch in complex environments, innovate the installation structure of the proximity switch, reduce the damage probability of the proximity switch caused by impact or vibration during work, improve the stability and reliability of the equipment, solve the compatibility problem of the proximity switch for different application scenarios, and increase the remote monitoring and remote alarm functions of the proximity switch to broaden its application path in the fields of security, automation, and intelligence.

[0006] To solve the above problems, the application provides a proximity switch with a safety protection mechanism, which comprises a switch main body and a sensor, a protective cover is fixed to the outer wall of the switch main body to protect the sensor, the switch main body is provided with a threaded structure, a left protective shell and a right protective shell are locked through threaded transmission to protect the switch main body in all directions, a sealing rubber sheet is additionally arranged at the locking position to increase the sealing property of the protective shell, and the protective shell has the characteristics of dustproof, waterproof, corrosion resistance and the like, a mounting seat is additionally arranged at the other end of the right protective shell to simplify the installation process, the mounting seat is fixed by bolts, a buffer rubber pad is additionally arranged at the fixing point to reduce external impact, the sealing rubber sheet between the protective shells can also effectively slow down the impact wave, and a sleeve is slidably connected to the inner wall of the protective shell, the sleeve provides buffer protection for the contact surface between the switch main body and the protective shell, and the damage probability caused by external impact or vibration is reduced.

[0007] Further, the sleeve, the sealing rubber sheet and the buffer rubber pad are all made of silicone rubber material, can maintain high elasticity and mechanical properties in low-temperature and high-temperature environments, and also have good resistance in acid and alkali environments, the protective cover, the left protective shell, the right protective shell and the base are made of stainless steel material, and the anti-interference and anti-impact capabilities of the sensor and the switch main body are improved.

[0008] Further, the left protective shell can be driven to the sensor end through threads until covering the sensor, and the sensor is provided with greater range protection, and at this time, the proximity switch is more suitable for use in environments with high risk coefficient that need close-range monitoring to prevent liquid splashing and the like.

[0009] Further, a control assembly and a battery assembly are additionally arranged at the mounting seat, the control assembly comprises a conversion module and a communication module, the conversion module can convert the switch quantity signal output by the proximity switch into a digital signal suitable for remote transmission, the communication module transmits the converted digital signal to a remote control center and an alarm processing unit, so that real-time monitoring and remote control of the proximity state of an object are realized, and an alarm signal is sent through sound, light, email or mobile phone APP information when an abnormality is detected, in the process, the battery assembly supplies power to the proximity switch and the control assembly, and is provided with a charging port, and in order to maintain the sealing property of the proximity switch and protect the internal elements, a port plug is connected to the buffer rubber pad.

[0010] In summary, compared with the prior art, the application has the following advantages:

[0011] (1) The protective cover of the sensor is additionally arranged to reduce the exposed area of the sensor, enhance the anti-impact and anti-interference capabilities of the sensor, and avoid misjudgment;

[0012] (2) The metal shell seal protection enhances the resistance of the proximity switch to acid, alkali, salt or other chemicals, effectively blocks the interference of the surrounding electromagnetic signals on the proximity switch, and enables the proximity switch to work normally in high temperature, low temperature and corrosive environment, expands the application range, and improves the reliability of the equipment.

[0013] (3) The optimized installation structure reduces the damage probability of the proximity switch caused by external impact or vibration, and improves the stability of the equipment;

[0014] (4) The protective shell is adjusted according to the application scene to provide more comprehensive protection for the inductor;

[0015] (5) The control component and the battery component are added to convert and transmit the output switch signal of the proximity switch, realize real-time monitoring and remote control, and send an alarm signal when an abnormal condition is detected. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present application;

[0017] Figure 2 is a perspective view of the present application;

[0018] Figure 3 is a sectional view of the present application;

[0019] Figure 4 is a side view of the first embodiment of the present application;

[0020] Figure 5 is a side view of the protective shell adjustment of the first embodiment of the present application;

[0021] Figure 6 is a front view of the mounting seat of the present application;

[0022] Figure 7 is a back view of the mounting seat of the present application;

[0023] Figure 8 is a structure block diagram of the remote monitoring and alarm system of the second embodiment of the present application;

[0024] Figure 9 is a sectional view of the sealing film of the present application.

[0025] Explanation of reference numerals in the drawings:

[0026] 1 sensor, 2 protective cover, 3 switch body, 4 left protective shell, 5 sleeve, 6 right protective shell, 7 sealing film, 701 outer cladding, 702 lipid spacer, 703 indicator cavity, 8 connecting piece, 9 bolt, 10 indicator light, 11 mounting base, 1101 control assembly, 1102 battery assembly, 1103 threaded hole, 12 buffer rubber pad, 13 charging port, 14 port plug, 15 cable port, 1501 signal port, 1502 electrode port DETAILED DESCRIPTION

[0027] The embodiments will be described clearly and completely in connection with the drawings of the specification, and all other embodiments obtained by those skilled in the art on the basis of the embodiments in the present application without creative labor belong to the scope of protection of the present application.

[0028] The first embodiment is as follows:

[0029] The utility model provides a proximity switch with safety protection mechanism, please refer to Figure 1 、 Figure 2 And Figure 3 , including switch body 3 and sensor 1, the one end outer wall of switch body 3 close to sensor 1 is fixedly connected with protective cover 2, and protective cover 2 forms half-enclosing structure around sensor 1, and the partial outer surface of switch body 1 is equipped with threaded structure, and left protective shell 4 and right protective shell 6 are connected with switch body 3 in screw thread, and the position of left protective shell 4 and right protective shell 6 screw thread transmission locking is equipped with sealing film 7, and the threaded structure of switch body 3 is outside, and the inner wall of left protective shell 4 is contacted with the outer wall of switch body 3 through sleeve 6, and right protective shell 6 is connected with mounting base 11 in screw thread through connecting piece 8, and the other side of mounting base 11 is fixedly connected with buffer rubber pad, and bolt 9 is fixed in mounting point position in sequence through connecting piece 8, mounting base 11 and buffer rubber pad 12.

[0030] In the implementation process of the present application, protective cover 2 adopts stainless steel metal material, protects sensor 1, reduces the exposure area of sensor 1, enhances the impact resistance and anti-interference ability of sensor 1 in the working process, avoids the misjudgment of sensor in some complex environment, thereby affecting the safe operation of equipment, switch body 3 adopts stainless steel metal shell protection, left protective shell 4 and right protective shell 6 screw thread transmission locking position are additionally provided with sealing film 7, the sealing property of switch body 3 is increased, the internal cable of switch body 3 is protected, the risk of switch body 3 exposed in acid, alkali, salt or other chemical substances is reduced, the metal shell is used to carry out electromagnetic shielding to proximity switch, effectively blocks the interference of surrounding electromagnetic signals to proximity switch, and the anti-interference ability of equipment is improved.

[0031] The installation structure of the proximity switch is optimized, the mounting seat 11 is additionally arranged, the mounting seat 11 is connected with the right protective shell 6 through the connecting piece 8 and forms an integral structure with the switch main body 3, the traditional installation mode of the proximity switch adopts two nut clamping installation pieces for fixation, the installation pieces are separate structures, in some complex environments, vibration can cause friction between the proximity switch and the installation pieces, and the proximity switch is prone to unstable fixation and damage to elements, in the application, the mounting seat 11 simplifies the installation process and is fixed by the bolt 9, the buffer rubber pad 12 is additionally arranged at the contact position of the mounting seat 11 and the fixing point, external impact is reduced from the fixing point, the right protective shell 6 is connected with the mounting seat 11, the sealing rubber sheet 7 located at the locking position of the right protective shell 6 and the left protective shell 4 can also effectively reduce the transmission of vibration waves, at the same time, the inside of the left protective shell 4 wrapping the switch main body 3 and the protective cover 2 is designed as a T-shaped groove, the sleeve pipe 5 is matched, the vibration received by the switch main body 3 can be reduced in the horizontal and vertical directions, buffer protection is provided for the contact surface of the switch main body 3 and the protective shell, the damage probability caused by external impact or vibration is reduced, and the stability of the equipment is improved.

[0032] In this process, the sleeve pipe 5, the sealing rubber sheet 7 and the buffer rubber pad 12 are made of silicone rubber material, the silicone rubber can maintain high elasticity and mechanical properties in the temperature range of-60℃ to 300℃, has good resistance to most acid and alkali compounds, enables the proximity switch to work normally in high-temperature, low-temperature and corrosive environments, expands the application range and improves the reliability of the equipment.

[0033] Please refer to Figure 9 The sealing rubber sheet 7 is made of transparent silicone rubber material and includes an outer coating layer 701 and a lipid layer 702, the outer coating layer 701 plays a buffer protection role on the lipid layer 702, the lipid layer 702 is made of lipid cellulose and is extremely easy to react with acid and alkali compounds, an indicator cavity 703 is arranged in the lipid layer 702, the indicator cavity 701 is filled with an acid-base indicator 702, the acid-base indicator 702 is a blue liquid, the sealing rubber sheet 7 is inevitably eroded by acid and alkali compounds with the working time accumulation of the proximity switch in an acid and alkali corrosive environment, with the deepening of the erosion, the corrosive compounds break through the outer coating layer 701, the lipid layer 702 is broken by the acid and alkali compounds, the acid-base indicator in the indicator cavity 703 flows out and reacts chemically, at this time, the flowing-out acid-base indicator appears red, at the same time, it is indicated that the sealing rubber sheet 7 has already failed to meet the sealing and protection effect of the switch main body 3, and the sealing rubber sheet 7 needs to be replaced in time.

[0034] Please refer to Figure 3 , Figure 4 and Figure 5The switch main body 3 is connected with the mounting base 11 through the right protective shell 6, and the switch main body 3 is not in direct contact with the mounting base 11 and is separated by a distance, the left protective shell 4 is moved to the inductor 1 end by rotating the left protective shell 4, the left protective shell 4 covers the protective cover 2 and the inductor 1 in the protective cover 2, and then the right protective shell 6 is rotated, so that the left protective shell 4 and the right protective shell 6 are kept in a locked state, at this time, the concealed proximity switch provides greater protection for the inductor 1, but the sensing range is reduced, and is more suitable for environments that need to be monitored at close range but are dangerous, and can prevent liquid splashing or dust intrusion, and correspondingly, the non-concealed proximity switch is more suitable for environments with a wide sensing range and relatively safe, such as automatic sensing doors.

[0035] The second embodiment is:

[0036] The utility model provides a proximity switch with safety protection mechanism, please refer to Figure 6 、 Figure 7 and Figure 8 , including mounting base 11, in the center axis of mounting base 11 two ends away from each other additional control assembly 1101 and battery assembly 1102, control assembly 1101 includes conversion module and communication module, and control assembly 1101 is equipped with cable port 15, cable port 15 includes signal port 1501 and electrode port 1502, cable port 15 is electrically connected with battery assembly 1102, battery assembly 1102 is chargeable structure, mounting base 11 is equipped with charging port 13, and the corresponding port plug 14 is set in the position of buffer rubber pad 12 close to charging port 13.

[0037] In the implementation process of the present application, when the detected object enters the sensing range of the inductor 1, the circuit state in the inductor 1 will change to form an oscillation circuit, thereby outputting a switching quantity signal, the switching quantity signal enters the control assembly 1101 through the signal port 1501, and is converted into a digital signal suitable for remote transmission by the conversion module in the control assembly 1101, and the communication module transmits the converted digital signal to the remote monitoring center and the alarm processing unit (such as a computer terminal or a mobile phone APP), thereby realizing real-time monitoring and remote control of the object approach state, when the receiving end detects an abnormal condition, an alarm signal can be sent through sound, light or mobile phone APP information, and this remote alarm function has wide application in the fields of security systems, industrial automation, smart home, etc.

[0038] In this process, to ensure the normal operation of the proximity switch and control assembly 1101, a battery assembly 1102 is additionally arranged on the other side of the mounting seat 11, stable power supply is provided through the electrode port 1502 on the control assembly 1101, and a charging port 13 is arranged. The proximity switch and control assembly 1101 consume low power when working, and can meet long-term endurance. The port plug 14 is additionally arranged on the charging port 13, which guarantees the sealing of the proximity switch and protects the normal operation of the internal circuit of the mounting seat 11 and the control assembly 1101.

[0039] The above is only the best embodiment adopted by the application in combination with the current actual demand, but the protection scope of the application is not limited thereto.

Claims

1. A proximity switch with a safety guard mechanism comprising a switch body (3), characterized in that: One end of the switch body (3) is fixedly connected with an inductor (1), one end of the switch body (3) close to the inductor (1) is fixedly connected with a protective cover (2), one end of the switch body (3) close to the protective cover (2) is threadedly connected with a left protective shell (4), the inner wall of the left protective shell (4) is sleeved with a sleeve (5), the sleeve (5) and the outer wall of the switch body (3) are slidably connected, one end of the switch body (3) away from the protective cover (2) is threadedly connected with a right protective shell (6), the end of the right protective shell (6) close to the left protective shell (4) is in contact with a sealing rubber sheet (7), one end of the right protective shell (6) away from the sealing rubber sheet (7) is fixedly connected with a connecting piece (8), the connecting piece (8) is threadedly connected with a mounting seat (11) through a bolt (9), one end of the mounting seat (11) away from the connecting piece (8) is fixedly connected with a buffer rubber pad (12), the buffer rubber pad (12) and the mounting seat (11) are provided with a threaded hole (1103) penetrating in the axial direction.

2. A proximity switch with a safety guard mechanism according to claim 1, characterized in that: The two sides of the center axis of the mounting seat (11) away from each other are respectively provided with a control assembly (1101) and a battery assembly (1102), the control assembly (1101) and the battery assembly (1102) are electrically connected, the control assembly (1101) comprises a conversion module and a communication module, the control assembly (1101) is provided with a cable port (15), the cable port (15) comprises a signal port (1501) and an electrode port (1502), the cable port (15) is electrically connected with the battery assembly (1102) through a wire.

3. A proximity switch with safety guarding mechanism as claimed in claim 1, wherein: One end of the mounting seat (11) close to the buffer rubber pad (12) is provided with a charging port (13), the inner wall of the charging port (13) is slidably connected with a port plug (14), the port plug (14) is fixedly connected with the buffer rubber pad (12).

4. A proximity switch with safety guarding mechanism as claimed in claim 1, wherein: The sealing rubber sheet (7) is made of transparent silicone rubber, comprising an outer cladding layer (701), an ester layer (702) and an indicator cavity (703), and the indicator cavity (703) is filled with an acid-base indicator.

5. A proximity switch with safety guarding mechanism as claimed in claim 1, wherein: The connecting piece (8) is provided with an indicator lamp (10), the indicator lamp (10) is electrically connected with the control assembly (1101) in the mounting seat (11) through a wire.

6. A proximity switch with safety guarding mechanism as claimed in claim 1, wherein: The sleeve (5), the sealing rubber sheet (7) and the buffer rubber pad (12) are all made of silicone rubber, and the protective cover (2), the left protective shell (4) and the right protective shell (6) are all made of stainless steel.

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