An industrial explosion-proof keyboard

Abstract

The application discloses an industrial explosion-proof keyboard, which comprises an explosion-proof base, a placing groove is formed in the top of the explosion-proof base, a keyboard base is fixedly connected in the placing groove, a heat-conducting column is fixedly connected to the inner bottom side of the keyboard base, a PCB board is fixedly connected to the top of the heat-conducting column, a through hole is formed in the top of the keyboard base, and a sealing cylinder is fixedly connected to the bottom of the through hole. The application has the following advantages: when water flows on the surface of the keyboard base and the key cap is pressed, the first sealing gasket and the first limiting ring move downward, then the sealing cylinder is matched to prevent the water flow from entering the inside of the keyboard base through the through hole, the first limiting ring and the water-blocking ring are arranged to prevent the water flow from entering the inside of the keyboard base through the top end of the sealing cylinder, the device can be waterproofed when the key cap is pressed, the PCB board in the inside of the keyboard base is effectively protected, and the possibility of explosion is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of keyboard, in particular to an industrial explosion-proof keyboard. BACKGROUND

[0002] Industrial keyboard can be divided into membrane keyboard, silica gel keyboard, metal keyboard, explosion-proof keyboard, industrial touch keyboard, waterproof keyboard special for industrial control, backlit reinforced keyboard, etc. Industrial keyboard is widely used in petroleum chemical industry, machinery manufacturing, transportation, power, national defense, military, aerospace, Internet, agriculture, voice numerical control, automation control, medical treatment, communication, measuring instrument, ATM machine, inquiry terminal, etc.

[0003] However, the current industrial keyboard has poor waterproof effect. If water enters the keyboard, the water stays in the keyboard, the PCB board will be short-circuited, causing the keyboard to be damaged and malfunction, and there is also the possibility of gas explosion. The existing industrial keyboard has unsatisfactory use effect in some coal mine explosion-proof, medical treatment and military industry, and has poor explosion-proof effect. SUMMARY

[0004] The present application relates to the technical field of keyboard, in particular to an industrial explosion-proof keyboard.

[0005] To achieve the above object, the present application provides the following technical scheme:

[0006] An industrial explosion-proof keyboard, comprising an explosion-proof base, a placing groove is formed in the top of the explosion-proof base, a keyboard base is fixedly connected in the inside of the placing groove, a heat conduction column is fixedly connected to the inside bottom side of the keyboard base, a PCB board is fixedly connected to the top of the heat conduction column, a through hole is formed in the top of the keyboard base, a sealing cylinder is fixedly connected to the bottom of the through hole, a first spring is fixedly connected to the top of the sealing cylinder which extends into the through hole, a key cap is fixedly connected to the top of the first spring, a first sealing gasket is fixedly connected to the bottom outside of the key cap, a first limiting ring is sleeved with the outer surface of the keyboard base on the upper end of the sealing cylinder, the bottom of the first sealing gasket is fixedly connected with the circumferential side of the first limiting ring, a water blocking ring is fixedly connected to the top of the outer surface of the sealing cylinder, a key shaft is fixedly connected to the bottom center of the key cap, the key shaft is located in the inside of the sealing cylinder, a first sliding groove is formed in the left and right sides of the top of the explosion-proof base, a first sliding block is slidingly connected in the inside of the first sliding groove, an explosion-proof glass is fixedly connected to the top of the first sliding block, an electric telescopic rod matched with the first sliding groove is fixedly connected to the left and right sides of the back of the explosion-proof base, the output ends of the two groups of electric telescopic rods are fixedly connected with the first sliding block by extending into the inside of the first sliding groove, a PLC controller is fixedly connected to the rear inner wall of the explosion-proof base, an opening is formed in the right side of the explosion-proof base, a fingerprint sensor is arranged in the inside of the opening.

[0007] Preferably, the top of the first limiting ring is provided with a toothed groove, and the bottom of the water-blocking ring is fixedly connected with a toothed block that matches the toothed groove.

[0008] Preferably, a second limiting ring is fixedly connected to the top periphery of the water-blocking ring. The top of the second limiting ring is provided with a moving groove, and the bottom of the moving groove is provided with a sliding groove. A sealing ring is fixedly connected inside the sliding groove. A retaining ring is fixedly connected to the bottom of the sealing ring. A second sealing gasket is fixedly connected to the top of the retaining ring. The top of the sealing ring extends out of the moving groove and is fixedly connected to the keycap.

[0009] Preferably, a second sliding groove is provided on both the inner top side and the inner bottom side of the opening, and a second slider is slidably connected inside each of the two sets of second sliding grooves. A cover is fixedly connected between the two sets of second sliders, and a second spring is fixedly connected to the rear inner wall of the second sliding groove. The other end of the second spring is fixedly connected to the second slider.

[0010] Preferably, the outer surfaces of the explosion-proof base, keyboard base, and keycaps are coated with an explosion-proof coating, and a drainage channel is provided at the bottom of the explosion-proof base.

[0011] The beneficial effects of this invention are as follows: The industrial explosion-proof keyboard provided by this invention dissipates the heat generated by the PCB board during operation through heat-conducting pillars, ensuring normal heat dissipation of the PCB board. When water is sprayed onto the surface of the keyboard base, the first sealing gasket and the first limiting ring also move downwards when the keycaps are pressed. Then, in conjunction with the sealing cylinder, they prevent water from entering the interior of the keyboard base through the through hole. The establishment of the first limiting ring and the water-blocking ring prevents water from entering the interior of the keyboard base from the top of the sealing cylinder. This allows the device to provide waterproofing even when the keycaps are pressed. The explosion-proof glass effectively protects the PCB board inside the keyboard base and reduces the possibility of an explosion. When the user touches the fingerprint sensor, the PLC controller receives the signal and activates the electric telescopic rod to pull the first slider, causing the explosion-proof glass to move backward, allowing the user to touch the keyboard base. After a certain period of time, when the PLC controller no longer receives signals from the PCB board, it controls the electric telescopic rod to push the first slider, causing the explosion-proof glass to close the top of the explosion-proof base. In the event of an explosion, the explosion-proof base and the explosion-proof glass work together to better protect the keyboard base, reducing the impact of the explosion and preventing it from endangering the user. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the basic structure of the present invention;

[0013] Figure 2 For the present invention Figure 1 Enlarged view of the structure at point A in the middle;

[0014] Figure 3 For the present invention Figure 2 Enlarged view of the structure at point B in the middle;

[0015] Figure 4 For the present invention Figure 1 Enlarged view of the structure at point C;

[0016] Figure 5 This is a right sectional view of the present invention. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0019] like Figure 1 - Figure 5As shown, the present invention provides an industrial explosion-proof keyboard, including an explosion-proof base 1. A placement groove 2 is formed on the top of the explosion-proof base 1. A keyboard base 3 is fixedly connected inside the placement groove 2. A heat-conducting column 4 is fixedly connected to the bottom inside the keyboard base 3. A PCB board 5 is fixedly connected to the top of the heat-conducting column 4. A through hole 6 is formed on the top of the keyboard base 3. A sealing cylinder 7 is fixedly connected to the bottom of the through hole 6. A first spring 8 is fixedly connected to the top of the sealing cylinder 7 extending into the through hole 6. A keycap 9 is fixedly connected to the top of the first spring 8. A first sealing gasket 10 is fixedly connected to the outer bottom of the keycap 9. A first limiting ring 11 is sleeved on the outer surface of the sealing cylinder 7 at the upper end of the keyboard base 3. The first sealing gasket 10... The bottom of the sealing cylinder 7 is fixedly connected to the periphery of the first limiting ring 11. A water-blocking ring 12 is fixedly connected to the top of the outer surface of the sealing cylinder 7. A key shaft 13 is fixedly connected to the bottom center of the keycap 9. The key shaft 13 is located inside the sealing cylinder 7. The top left and right sides of the explosion-proof base 1 are provided with first sliding grooves 14. A first slider 15 is slidably connected inside the first sliding groove 14. An explosion-proof glass 16 is fixedly connected to the top of the first slider 15. The left and right sides of the back of the explosion-proof base 1 are fixedly connected with electric telescopic rods 17 that match the first sliding grooves 14. The output ends of the two sets of electric telescopic rods 17 extend into the interior of the first sliding grooves 14 and are fixedly connected to the first sliders 15. The rear inner wall of the explosion-proof base 1 is fixedly connected to... A PLC controller 18 is connected to the keyboard base 1. An opening 19 is provided on the right side of the explosion-proof base 1, and a fingerprint sensor 20 is installed inside the opening 19. The heat generated by the operation of the PCB board 5 is dissipated through the heat conduction column 4 to ensure normal heat dissipation of the PCB board 5. When water is sprayed on the surface of the keyboard base 3, the first sealing gasket 10 and the first limiting ring 11 also move down when the keycap 9 is pressed. Then, in conjunction with the sealing cylinder 7, water is prevented from entering the interior of the keyboard base 3 through the through hole 6. The establishment of the first limiting ring 11 and the water-blocking ring 12 can prevent water from entering the interior of the keyboard base 3 from the top of the sealing cylinder 7. This allows the device to provide waterproof protection even when the keycap 9 is pressed, effectively protecting the keyboard base. The PCB board 5 inside the keyboard base 3 also reduces the possibility of explosion. When the user touches the fingerprint sensor 20, the PLC controller 18 receives the signal and activates the electric telescopic rod 17 to pull the first slider 15, causing the explosion-proof glass 16 to move backward, allowing the user to touch the keyboard base 3. After a certain period of time, when the PLC controller 18 no longer receives the signal from the PCB board 5, it will control the electric telescopic rod 17 to push the first slider 15, causing the explosion-proof glass 16 to close the top of the explosion-proof base 1. In the event of an explosion, the explosion-proof base 1, together with the explosion-proof glass 16, can better protect the keyboard base 3, reducing the impact of the explosion and preventing it from endangering the user.

[0020] The top of the first limiting ring 11 is provided with a toothed groove 21, and the bottom of the water-blocking ring 12 is fixedly connected with a toothed block 22 that matches the toothed groove 21; through the cooperation between the toothed groove 21 and the toothed block 22, the connection between the first limiting ring 11 and the water-blocking ring 12 is made tighter, reducing the possibility of water flowing through.

[0021] A second limiting ring 23 is fixedly connected to the top periphery of the water-blocking ring 12. The top of the second limiting ring 23 has a moving groove 24, and the bottom of the moving groove 24 has a sliding groove 25. A sealing ring 26 is fixedly connected inside the sliding groove 25. A retaining ring 27 is fixedly connected to the bottom of the sealing ring 26. A second sealing gasket 28 is fixedly connected to the top of the retaining ring 27. The top of the sealing ring 26 extends out of the moving groove 24 and is fixedly connected to the keycap 9. When the keycap 9 is pressed, the sealing ring 26 moves down. At this time, the sealing ring 26, together with the second limiting ring 23, can prevent water from flowing through the top of the sealing cylinder 7 into the interior of the keyboard base 3. After the keycap 9 is reset by the force of the first spring 8, the second sealing gasket 28 fits against the top of the moving groove 24 to further block water flow, effectively protecting the PCB board 5 inside the keyboard base 3.

[0022] The opening 19 has a second sliding groove 29 on both the top and bottom sides. A second slider 30 is slidably connected inside each of the two sets of second sliding grooves 29. A cover 31 is fixedly connected between the two sets of second sliders 30. A second spring 32 is fixedly connected to the rear inner wall of the second sliding groove 29. The other end of the second spring 32 is fixedly connected to the second slider 30. When the user needs to identify the fingerprint, he can simply push the cover 31 to identify it. After the identification is completed, the second spring 32 will drive the cover 31 to reset, thereby better protecting the fingerprint sensor 20 and improving its service life.

[0023] The outer surfaces of the explosion-proof base 1, keyboard base 3, and keycaps 9 are coated with an explosion-proof coating. A drainage channel 33 is provided at the bottom of the explosion-proof base 1. The explosion-proof coating on the outer surfaces of the explosion-proof base 1, keyboard base 3, and keycaps 9 further improves the explosion-proof effect. In the event of water ingress, the drainage channel 33 facilitates the drainage of water.

[0024] Working Principle: The heat generated by the PCB board 5 during operation is dissipated through the heat-conducting column 4, ensuring normal heat dissipation of the PCB board 5. When water is sprayed onto the surface of the keyboard base 3, pressing the keycap 9 causes the first sealing pad 10 and the first limiting ring 11 to move downwards. These, along with the sealing cylinder 7, prevent water from entering the keyboard base 3 through the through hole 6. The first limiting ring 11 and the water-blocking ring 12 prevent water from entering the keyboard base 3 from the top of the sealing cylinder 7. When the keycap 9 is pressed, the sealing ring 26 moves downwards. At this time, the sealing ring 26, along with the second limiting ring 23, can block water from entering the keyboard base 3 through the top of the sealing cylinder 7. After the keycap 9 is reset by the force of the first spring 8, the second sealing pad 28 adheres to the inner top side of the moving groove 24, further blocking water flow. This allows the device to provide waterproof protection even when the keycap 9 is pressed, effectively protecting the keyboard base 3. The explosion-proof glass 16 protects the PCB board 5 inside the keyboard base 3 and reduces the possibility of explosion. When the user pushes the cover 31 and touches the fingerprint sensor 20 with their finger, the PLC controller 18 receives the signal and activates the electric telescopic rod 17 to pull the first slider 15, causing the explosion-proof glass 16 to move backward, allowing the user to touch the keyboard base 3. At this time, under the force of the second spring 32, the cover 31 is pushed back, thus better protecting the fingerprint sensor 20 and improving its service life. After a certain period of time, when the PLC controller 18 no longer receives the signal from the PCB board 5, it will control the electric telescopic rod 17 to push the first slider 15, causing the explosion-proof glass 16 to close the top of the explosion-proof base 1. In the event of an explosion, the explosion-proof base 1, together with the explosion-proof glass 16, can better protect the keyboard base 3, reducing the impact of the explosion and preventing it from endangering the user.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An industrial explosion-proof keyboard, characterized by: Including the explosion -proof base (1), the top of the explosion -proof base (1) is provided with a placing groove (2), the inside of the placing groove (2) is fixedly connected with the keyboard base (3), the inside bottom of the keyboard base (3) is fixedly connected with the heat conduction column (4), the top of the heat conduction column (4) is fixedly connected with the PCB board (5), the top of the keyboard base (3) is provided with a through -hole (6), the bottom of the through -hole (6) is fixedly connected with the sealing cylinder (7), the top of the sealing cylinder (7) is fixedly connected with the first spring (8) in the through -hole (6), the top of the first spring (8) is fixedly connected with the key cap (9), the bottom outside of the key cap (9) is fixedly connected with the first sealing pad (10), the outer surface of the sealing cylinder (7) is sleeved with the first limiting ring (11) on the upper end of the keyboard base (3), the bottom of the first sealing pad (10) is fixedly connected with the circumferential side of the first limiting ring (11), the outer surface of the sealing cylinder (7) is fixedly connected with the water retaining ring (12) on the top, the bottom center of the key cap (9) is fixedly connected with the key shaft (13), the key shaft (13) is located in the inside of the sealing cylinder (7), the top of the explosion -proof base (1) is provided with a first sliding groove (14) on the left and right sides, the inside of the first sliding groove (14) is slidably connected with the first sliding block (15), the top of the first sliding block (15) is fixedly connected with the explosion -proof glass (16), the back of the explosion -proof base (1) is fixedly connected with the electric telescopic rod (17) matched with the first sliding groove (14) on the left and right sides, the output end of the two groups of electric telescopic rods (17) is fixedly connected with the first sliding block (15) in the inside of the first sliding groove (14), the back inner wall of the explosion -proof base (1) is fixedly connected with the PLC controller (18), the right side of the explosion -proof base (1) is provided with an opening (19), the inside of the opening (19) is provided with a fingerprint sensor (20), the top circumferential side of the water retaining ring (12) is fixedly connected with the second limiting ring (23), the top of the second limiting ring (23) is provided with a moving groove (24), the bottom of the moving groove (24) is provided with a sliding groove (25), the inside of the sliding groove (25) is fixedly connected with the sealing ring (26), the bottom of the sealing ring (26) is fixedly connected with the blocking ring (27), the top of the blocking ring (27) is fixedly connected with the second sealing pad (28), the top of the sealing ring (26) is fixedly connected with the key cap (9) and is fixedly connected with the key cap (9).

2. An industrial explosion-proof keyboard according to claim 1, characterized in that: The top of the first limiting ring (11) is provided with a gear slot (21), and the bottom of the water retaining ring (12) is fixedly connected with a gear block (22) matched with the gear slot (21).

3. An industrial explosion-proof keyboard according to claim 1, wherein: The inner top side and the inner bottom side of the opening (19) are both provided with a second sliding groove (29), the interiors of the two groups of second sliding grooves (29) are both slidably connected with a second sliding block (30), the two groups of second sliding blocks (30) are fixedly connected with a cover (31), the rear inner wall of the second sliding groove (29) is fixedly connected with a second spring (32), and the other end of the second spring (32) is fixedly connected with the second sliding block (30).

4. An intrinsically safe industrial keyboard as claimed in claim 1, wherein: The outer surfaces of the explosion-proof base (1), the keyboard base (3) and the keycap (9) are coated with an explosion-proof coating, and the bottom of the explosion-proof base (1) is provided with a water flow groove (33).

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