An elevator control box

Abstract

The application relates to an elevator operating box in the field of elevator operating boxes, which comprises a box body, an industrial automatic control system device manufacturing type panel covering an opening of the box body and a plurality of button units arranged on the industrial automatic control system device manufacturing type panel; the button unit comprises a shell, a key, a plunger, a reset spring and a circuit board; a partition plate is arranged in the shell; the partition plate divides the shell into a driving cavity and a driven cavity; the key is slidably arranged in the driving cavity; the circuit board is fixedly connected in the driven cavity; one end of the plunger is connected with the key, and the other end is provided with a trigger metal sheet; the two ends of the reset spring are respectively abutted with the key and the partition plate; a reset ring is arranged on the key; an annular air blowing groove is formed in the partition plate; a momentary air supply unit is arranged on the partition plate; the air blowing groove is communicated with the momentary air supply unit of the adjacent button unit; and the application has the technical effect of reducing elevator failures and thus reducing the maintenance frequency of the elevator.

Description

Technical Field

[0001] This application relates to the technical field of elevator control boxes, and in particular to an elevator control box. Background Technology

[0002] Existing elevator control boxes generally include a box body, a panel, and multiple floor button units. The button unit is equipped with a button, a plunger, a return spring, and a circuit board. Pressing the button causes the trigger metal piece at the end of the plunger to contact the trigger head of the circuit board to conduct electricity, thereby outputting a floor control signal. When the button is released, the return spring force drives the button to rebound and disconnect the signal path.

[0003] The existing traditional structure has obvious defects: the sliding fit gap between the button and the housing allows environmental dust and debris to continuously seep in and accumulate at the button sliding joint during long-term elevator use, increasing the sliding friction resistance of the button. When the amount of dust accumulation is large, the elastic thrust of a single return spring is insufficient to overcome the resistance caused by the dust, easily leading to situations where the button does not spring back properly or becomes stuck and dented. In this case, the trigger metal piece and the circuit board trigger head remain in contact and conductive, causing the control box to continuously send incorrect floor commands to the main control circuit board, resulting in elevator malfunctions such as accidental start / stop and incorrect floor selection, affecting elevator operation safety and passenger experience.

[0004] Regarding the aforementioned technologies, the inventors believe that there is a defect where dust accumulation on the buttons causes elevator malfunctions, thereby affecting the safety of elevator operation. Summary of the Invention

[0005] To address the aforementioned technical problems, this application provides an elevator control box.

[0006] This application provides an elevator control panel, which adopts the following technical solution: An elevator control panel includes a housing, a prefabricated panel for an industrial automatic control system device covering the opening of the housing, and multiple button units disposed on the prefabricated panel for the industrial automatic control system device device. Each button unit includes a housing, a button, a plunger, a return spring, and a circuit board. A partition plate is disposed inside the housing, dividing the housing into an active chamber and a driven chamber. The button is slidably disposed in the active chamber. The circuit board is fixedly connected to the driven chamber. Two trigger heads are disposed on the circuit board. One end of the plunger is connected to the button. The other end of the plunger passes through the partition plate and is provided with a trigger metal piece. Both ends of the return spring abut against the button and the partition plate, respectively. A return ring is disposed on the button. An annular air-blowing groove is formed on the partition plate. An instantaneous air supply unit is disposed on the partition plate. The air-blowing groove communicates with the instantaneous air supply unit of the adjacent button unit.

[0007] By adopting the above technical solution, dust tends to accumulate in the sliding gap between the button and the outer shell during long-term use. Relying solely on the reset spring can easily lead to problems such as the button not rebounding properly and the contact remaining conductive, resulting in erroneous commands. By setting a reset ring and annular air-blowing groove, in conjunction with an instantaneous air supply unit, a pneumatic auxiliary structure is formed. The airflow output by the instantaneous air supply unit can act on the adjacent button reset ring, forming an upward pushing force, which, together with the reset spring, pushes the stuck button back to its original position, significantly reducing button sticking failures. During the button pressing process, the reset ring inserts into the annular air-blowing groove to complete the seal, locking the high-pressure gas output by the instantaneous air supply unit, preventing airflow leakage, ensuring sufficient instantaneous air pressure in the air-blowing groove, and providing a stronger auxiliary reset force for the stuck button.

[0008] Preferably, the instantaneous air supply unit includes a trigger ring, an annular trigger piston, a compression spring, and multiple stops; the trigger ring is disposed on the button; an annular air supply groove is formed on the partition plate; a connecting hole is formed on the bottom wall of the annular air supply groove; the connecting holes of two adjacent button units are connected by an air pipe; the trigger piston is slidably disposed in the air supply groove; multiple sliding grooves are formed on the side wall of the air supply groove; the multiple sliding grooves are evenly distributed along the circumference of the air supply groove; multiple stops are slidably disposed in the multiple sliding grooves respectively; one end of each stop extends into the air supply groove and abuts against the bottom wall of the trigger piston; both ends of the compression spring are connected to the trigger ring and the trigger piston respectively.

[0009] By adopting the above technical solution, under normal conditions, the stop block extends into the air supply groove to support the bottom wall of the trigger piston, and the piston is limited and fixed; in the initial stage of pressing the button, only the spring is compressed to store energy, and the piston remains stationary. After the button moves down to the set stroke, the stop block disengages from the piston. After the energy storage is completed, the piston presses down instantly to generate air, forming a high-pressure pulse airflow. The instantaneous impact force can effectively lift up the stuck button.

[0010] Preferably, the housing is provided with a plurality of spring pieces; the plurality of spring pieces are respectively connected to the end of the plurality of stops away from the air supply groove.

[0011] By adopting the above technical solution, the spring continuously applies an elastic thrust toward the gas supply groove to the stop block. After the button is lifted and the drive rod releases the lateral pressure on the stop block, the spring can automatically push the stop block back into the gas supply groove, supporting the annular trigger piston to complete the locking. No manual reset is required, and each press of the button can stably complete one gas production cycle.

[0012] Preferably, the bottom of the stop block located at one end of the air supply groove has an arc-shaped guide surface.

[0013] By adopting the above technical solution, when the trigger piston returns upward, the lower end face of the trigger piston will contact the arc-shaped guide surface at the bottom of the stop block. The arc-shaped inclined surface can convert the upward axial force of the trigger piston into a radial component force that pushes the stop block open. Without the assistance of the drive rod, the stop block can be slightly pushed open, allowing the trigger piston to smoothly pass over the top of the stop block. This avoids the failure of the piston bottom surface getting stuck with the right-angle end face of the stop block and the mechanism being unable to reset. After the trigger piston has completely moved upward past the height of the stop block, the stop block can smoothly return to its original position under the thrust of the matching spring plate, quickly supporting the bottom of the trigger piston to complete the limit lock. This ensures that the instantaneous air supply unit can reliably return to the standby state after each button is lifted, and the multiple press cycle action is stable.

[0014] Preferably, the button is provided with a plurality of drive rods; each of the plurality of drive rods corresponds one-to-one with a plurality of stops; each of the plurality of drive rods has a drive slope on its bottom wall; the end of the stop away from the air supply groove is provided with a sliding hole corresponding to the drive rod; the top opening of the sliding hole has a driven slope; after the button is slid, the drive slope and the driven slope are either in contact or away from each other.

[0015] By adopting the above technical solution, when the button is pressed down, the driving inclined surface and the driven inclined surface are in contact, converting the vertical downward linear thrust of the button into a radial component force that pushes the stop block outward, overcoming the spring force of the spring plate and causing the stop block to disengage from the air supply groove, thus releasing the support limit of the annular trigger piston. After the button is lifted, the driving inclined surface and the driven inclined surface separate from each other, the radial extrusion force disappears, creating conditions for the stop plate to rebound and reset, and achieving precise adjustment of the energy storage and unlocking timing in the air supply groove. During the small downward movement of the button, the inclined surface only makes slight contact, only slowly compressing the compression spring to store energy, and the stop block will not move outward immediately. Only when the button is pressed down to near its limit stroke and the inclined surface is fully pressed, will the stop block completely withdraw from the air supply groove, ensuring that the compression spring fully stores energy and triggers the piston to compress air again, forming a high-pressure pulse airflow, thus achieving the auxiliary reset effect.

[0016] Preferably, there are two sets of sliding grooves; the two sets of sliding grooves are respectively opened on the inner and outer sidewalls of the air supply groove; and the multiple blocks are correspondingly slidably arranged in the multiple sliding grooves.

[0017] By adopting the above technical solution, the slide grooves are respectively set on the inner and outer side walls of the air supply groove, and the corresponding blocks support the annular trigger piston from both the inner and outer sides simultaneously, forming an annular multi-point circumferential support structure. Compared with the block arrangement on one side, it can avoid the trigger piston from tilting and jamming due to force on one side, the coaxiality of the trigger piston sliding up and down is higher, the air compression process is better sealed, and the air pressure output is stable.

[0018] Preferably, a limiting ring is provided in the air supply groove; the bottom wall of the limiting ring abuts against the top wall of the trigger piston.

[0019] By adopting the above technical solution, under normal conditions, the stop block supports the annular trigger piston from below, and the limiting ring presses against and limits the trigger piston from the top, with the upper and lower parts working together to clamp and fix the trigger piston. When the compression spring is pressed down by the button to store energy, the upward rebound force of the compression spring is constrained by the limiting ring, preventing the trigger piston from being pushed up by the compression spring or falling off the stop block support and prematurely moving down to release pressure, ensuring that the compression spring fully stores energy and ensuring sufficient gas pressure for subsequent gas production.

[0020] Preferably, the limiting ring includes a first limiting part disposed on the inner ring sidewall of the air supply groove and a second limiting part disposed on the outer ring sidewall of the air supply groove.

[0021] By adopting the above technical solution, the limiting ring is divided into an inner ring first limiting part and an outer ring second limiting part, which simultaneously press and support the top of the inner and outer rings of the annular trigger piston, forming a balanced constraint around the entire ring. Compared with single-sided limiting, this avoids localized single-point pressure on the trigger piston, preventing skewing, ensuring the coaxiality of the trigger piston and the annular air supply groove, and providing better sealing during the sliding process.

[0022] Preferably, the two ends of the trigger metal sheet are respectively provided with contacts corresponding to the two trigger heads.

[0023] Preferably, the housing contains a main control circuit board and a power conversion board; a glass display screen is embedded on the outer side of the industrial automatic control system device's manufactured panel; the main control circuit board is electrically connected to the power conversion board, the glass display screen, and the multiple button units via busbars.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. During long-term use, dust easily accumulates in the sliding gap between the button and the outer casing. Relying solely on the return spring can easily lead to problems such as the button not rebounding properly and the contact remaining conductive, resulting in erroneous commands. By setting up a return ring and annular air-blowing groove, in conjunction with an instantaneous air supply unit, a pneumatic auxiliary structure is formed. The airflow output by the instantaneous air supply unit can act on the adjacent button return ring, creating an upward pushing force, which, together with the return spring, pushes the stuck button back to its original position, significantly reducing button sticking failures. During the button pressing process, the return ring inserts into the annular air-blowing groove to complete the seal, locking the high-pressure gas output by the instantaneous air supply unit, preventing airflow leakage, ensuring sufficient instantaneous air pressure in the air-blowing groove, and providing a stronger auxiliary reset force for the stuck button.

[0025] 2. Under normal conditions, the stop block extends into the air supply groove to support the bottom wall of the trigger piston, and the piston is limited and fixed. When the button is pressed down initially, only the spring is compressed to store energy, and the piston remains stationary. The stop block disengages from the piston after the button has descended to the set stroke. After the energy storage is completed, the piston presses down instantly to generate air, forming a high-pressure pulse airflow. The instantaneous impact force can effectively lift up the stuck button. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the elevator control panel.

[0027] Figure 2 This is a schematic diagram of the button unit in the embodiment.

[0028] Figure 3 This is a schematic diagram of the internal structure of the outer shell in the embodiment.

[0029] Figure 4 yes Figure 3 A magnified view of part A in the image.

[0030] Figure 5 This is a schematic diagram of the button structure in the embodiment.

[0031] Figure 6 This is a bottom view of the buttons in the embodiment.

[0032] Figure 7 This is a schematic diagram of the outer shell in the embodiment.

[0033] Figure 8 This is a top view of the outer casing in the embodiment.

[0034] Figure 9 yes Figure 8 A magnified view of part B in the image.

[0035] Explanation of reference numerals in the attached figures: 1. Housing; 11. Industrial automatic control system device manufacturing panel; 2. Button unit; 21. Housing; 211. Divider plate; 2111. Air blowing channel; 2112. Air supply channel; 22. Button; 221. Reset ring; 23. Plunger; 231. Trigger metal plate; 2311. Contact; 24. Reset spring; 25. Circuit board; 251. Trigger head; 3. Instantaneous air supply unit; 31. Trigger ring; 32. Trigger piston; 33. Compression spring; 34. Stop block; 341. Arc-shaped guide surface; 342. Driven inclined surface; 4. Spring; 5. Limiting ring; 6. Air pipe; 7. Drive rod; 71. Drive inclined surface. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0037] This application discloses an elevator control panel. (Refer to...) Figure 1-3The device includes a housing 1, an industrial automatic control system device manufacturing panel 11 covering the opening of the housing 1, and multiple button units 2 disposed on the industrial automatic control system device manufacturing panel 11. The button units 2 pass through the industrial automatic control system device manufacturing panel 11 and are fixedly connected to the industrial automatic control system device manufacturing panel 11. A main control circuit board and a power conversion board are disposed inside the housing 1. A glass display screen is embedded on the outside of the industrial automatic control system device manufacturing panel 11. The main control circuit board is electrically connected to the power conversion board, the glass display screen and the multiple button units 2 through busbars. The button unit 2 includes a housing 21, a button 22, a plunger 23, a return spring 24, and a circuit board 25. A partition plate 211 is provided inside the housing 21, which divides the housing 21 into an active chamber and a passive chamber. The button 22 is slidably disposed in the active chamber. The circuit board 25 is fixedly connected in the passive chamber. Two trigger heads 251 are provided on the circuit board 25. One end of the plunger 23 is connected to the button 22. The other end of the plunger 23 passes through the partition plate 211 and is provided with a trigger metal piece 231. The two ends of the trigger metal piece 231 are respectively provided with contacts 2311 corresponding to the two trigger heads 251. The return spring 24 is sleeved on the plunger 23. The two ends of the return spring 24 abut against the button 22 and the partition plate 211, respectively.

[0038] In standby mode, the two ends of the reset spring 24 press against the bottom of the button 22 and the upper surface of the partition plate 211 respectively, and the button 22 is lifted by the spring force, and the button 22 remains in a raised state; the plunger 23 rises with the button 22, and the bottom trigger metal piece 231 moves away from the two trigger heads 251 on the circuit board 25. The two sets of contacts 2311 are disconnected from the trigger heads 251, the circuit board 25 has no conduction signal, and the control box is in standby mode.

[0039] When in operation, an external force presses down on button 22, causing button 22 to slide vertically downwards, simultaneously driving plunger 23 to move downwards. The return spring 24 is continuously compressed and stores energy. Plunger 23 passes through partition plate 211, causing trigger metal piece 231 to move downwards synchronously until the two contacts 2311 at the bottom of trigger metal piece 231 are completely in contact with the two trigger heads 251 of circuit board 25. The two contact paths are connected, and circuit board 25 generates floor electrical signals, which are transmitted to the main control circuit board via the cable tray to complete logic recognition and command issuance.

[0040] After the button 22 is released, the compressed reset spring 24 releases its elastic potential energy, pushes the button 22 upward, and drives the plunger 23 and the trigger metal plate 231 to retract upward in sync. The contact 2311 separates from the trigger head 251, the circuit is disconnected, and the single operation is completed. The button 22 returns to the initial position, and the device returns to standby mode.

[0041] After prolonged use, dust continuously seeps in from the gap between the button 22 and the outer shell 21, accumulating in the sliding gap of the button 22, increasing the sliding friction resistance. The elasticity of the reset spring 24 alone is insufficient to push the button 22 to fully return, resulting in problems such as the button 22 getting stuck, inability to accurately reset, and continuous contact causing erroneous commands.

[0042] A reset ring 221 is provided on the button 22; an annular air blowing groove 2111 is provided on the partition plate 211; an instantaneous air supply unit 3 is provided on the partition plate 211; every two adjacent button units 2 are divided into a group, and the instantaneous air supply unit 3 of any button unit 2 in the group is connected to the air blowing groove 2111 of the adjacent button unit 2 in the same group.

[0043] During the downward pressing of button 22, reset ring 221 is simultaneously inserted into the annular air-blowing groove 2111 of partition plate 211, blocking the annular channel of air-blowing groove 2111; when button 22 moves down to the limit position (fully pressed to the bottom), reset ring 221 completely seals air-blowing groove 2111, and the instantaneous high-pressure gas output by instantaneous air supply unit 3 is sealed inside the cavity of air-blowing groove 2111; instantaneous high-pressure airflow is released by instantaneous air supply unit 3 to the air-blowing groove 2111 of adjacent buttons in the same group, and the airflow acts on the lower surface of reset ring 221 of adjacent button 22, forming an upward auxiliary thrust to counteract the sliding friction caused by dust, and together with the elastic thrust of reset spring 24, pushes button 22 upward, forcibly pushing the stuck button 22 back to the initial standby position.

[0044] Reference Figures 3 to 9The instantaneous air supply unit 3 includes a trigger ring 31, an annular trigger piston 32, a compression spring 33, and multiple stops 34; the trigger ring 31 is mounted on the button 22; an annular air supply groove 2112 is provided on the partition plate 211; a connecting hole is provided on the bottom wall of the annular air supply groove 2112; the connecting holes of two adjacent button units 2 are connected by an air pipe 6; the trigger piston 32 is slidably mounted in the air supply groove 2112; two sets of sliding grooves are provided on the side wall of the air supply groove 2112. Two sets of sliding grooves are respectively formed on the inner and outer sidewalls of the air supply groove 2112; multiple sliding grooves in each set are evenly distributed along the circumference of the air supply groove 2112; multiple stops 34 are correspondingly slidably arranged in the multiple sliding grooves; one end of the stop 34 extends into the air supply groove 2112 and abuts against the bottom wall of the trigger piston 32; multiple spring pieces 4 are provided inside the outer casing 21; the multiple spring pieces 4 are respectively connected to the ends of the multiple stops 34 away from the air supply groove 2112; the spring pieces 4 continuously supply air to the air supply groove 2112. A push block 34 is provided at the center of the air supply groove 2112; a sliding hole corresponding to the drive rod 7 is provided at the end of the block 34 away from the air supply groove 2112; a driven inclined surface 342 is provided at the top opening of the sliding hole; multiple drive rods 7 are provided on the button 22; each drive rod 7 corresponds to a block 34; each drive rod 7 has a drive inclined surface 71 on its bottom wall; after the button 22 slides, the drive inclined surface 71 is in contact with or away from the driven inclined surface 342; a compression spring 33 is axially arranged between the trigger ring 31 and the annular trigger piston 32; both ends of the compression spring 33 are connected to the trigger ring 31 and the trigger piston 32 respectively; a limit ring 5 is provided in the air supply groove 2112; the bottom wall of the limit ring 5 abuts against the top wall of the trigger piston 32; the limit ring 5 includes a first limit part provided on the inner ring side wall of the air supply groove 2112 and a second limit part provided on the outer ring side wall of the air supply groove 2112; under normal conditions, the limit ring 5 presses against the top of the annular trigger piston 32.

[0045] When button 22 is pressed without external force, the reset spring 24 holds button 22 in its original position at the top; the drive rod 7 is simultaneously in a high position, and the drive inclined surface 71 and the driven inclined surface 342 of the stop block 34 are separated from each other; the spring piece 4 inside the outer shell 21 continuously pushes the stop block 34 into the air supply groove 2112, so that one end of the stop block 34 passes through the slide groove and extends into the cavity of the annular air supply groove 2112; the end of the stop block 34 extends into the bottom wall of the annular trigger piston 32, and the limiting ring 5 presses on the top of the trigger piston 32 simultaneously, forming a clamping limit from top to bottom, firmly fixing the annular trigger piston 32 to the upper part of the air supply groove 2112, and the compression spring 33 is in a naturally extended state without compression and energy storage.

[0046] The operator presses down button 22, which simultaneously drives trigger ring 31 and multiple drive rods 7 to move downwards. When button 22 moves down slightly, drive rod 7 drives inclined surface 71 to slowly approach the driven inclined surface 342 of stop block 34, but the two are not yet fully in contact. Trigger ring 31 moves down synchronously with button 22, and the upper end of compression spring 33 is pressed down synchronously. The lower end of compression spring 33 is blocked by trigger piston 32 which is locked. Compression spring 33 is gradually compressed and deformed, and elastic potential energy continues to accumulate. During this stage, stop block 34 is still inserted into air supply groove 2112, trigger piston 32 is still locked and does not move. The volume of air supply groove 2112 remains unchanged, and the internal air pressure does not change.

[0047] As button 22 continues to be pressed down to near its limit, the driving ramp 71 of drive rod 7 fully engages with the driven ramp 342 of stop block 34. As drive rod 7 continues to move downward, the ramp generates a radial force, overcoming the clamping force of spring 4 and pushing stop block 34 along the slide groove towards the outer side of the inner and outer rings of air supply groove 2112. When button 22 reaches its limit of downward pressure, all stops 34 are completely withdrawn from the interior of the annular air supply groove 2112, and the stops 34 are completely disengaged from the bottom wall of trigger piston 32. The previously compressed and stored compression spring 33 instantly releases its elastic thrust, pushing the annular trigger piston 32 downward along the annular... The air supply groove 2112 slides downward rapidly; during the downward movement of the trigger piston 32, the sealed air inside the air supply groove 2112 is squeezed, and the air pressure inside the air supply groove 2112 rises sharply. The high-pressure gas is quickly transported to the air supply groove 2112 of the adjacent button unit 2 in the same group through the bottom connecting hole of the air supply groove 2112 and the external air pipe 6, and then enters the blowing groove; the high-pressure airflow is sealed inside the cavity of the blowing groove 2111, impacting the lower surface of the bottom reset ring 221 of the adjacent button 22, forming an upward instantaneous thrust, which, together with the reset spring 24 of the adjacent button 22, counteracts the frictional resistance of the dust and forcibly locks the button 22 to rebound.

[0048] After releasing button 22, button 22 moves upward, causing trigger ring 31 to move upward. The compression spring 33 pulls the annular trigger piston 32 to slide upward along the air supply groove 2112. Drive rod 7 moves upward synchronously, and drive inclined surface 71 and driven inclined surface 342 of stop block 34 gradually separate, and the radial compression force of the inclined surface disappears. Spring 4 restores its elasticity and continues to push stop block 34 toward the center of air supply groove 2112. An arc-shaped guide surface 341 is set at the bottom of the end of stop block 34 that extends into air supply groove 2112. When trigger piston 32 returns upward, the lower end face of trigger piston 32 contacts arc-shaped guide surface 341. The inclined surface thrust slightly moves stop block 34 outward to avoid it, ensuring that trigger piston 32 moves upward smoothly and passes the height of stop block.

[0049] When the annular trigger piston 32 moves completely above the stop block 34, the stop block 34 is no longer blocked by the trigger piston 32. The spring 4 directly pushes the stop block 34 completely into the air supply groove 2112. The stop block 34 is supported by the bottom wall of the trigger piston 32 again, and the top limit ring 5 clamps and fixes the trigger piston 32. The compression spring 33 returns to its extended state, and the mechanism returns to the initial standby lock state, completing one complete air supply cycle and waiting for the next button 22 to be pressed to trigger.

[0050] The working principle of an elevator control box in this application is as follows: Under normal conditions, button 22 is lifted by reset spring 24, and trigger metal plate 231 is disconnected from circuit board 25; when button 22 is pressed, plunger 23 moves down, contact 2311 abuts against trigger head 251, circuit board 25 conducts to generate floor signal and uploads it to main control board; after releasing, reset spring 24 pushes button 22 to reset, circuit disconnects and completes one operation.

[0051] Long-term dust accumulation will increase the sliding resistance of button 22, causing it to stick and preventing button 22 from effectively returning to its original position.

[0052] A reset ring 221 is provided at the bottom of button 22, and an annular air-blowing groove 2111 is opened on the partition plate 211. Two adjacent buttons form a group, and their respective instantaneous air supply units 3 are connected to the air-blowing groove 2111 in the same group. When button 22 is pressed to the bottom, the reset ring 221 closes the air-blowing groove 2111, and the instantaneous air supply unit 3 outputs high-pressure airflow into the air-blowing groove 2111 of the adjacent button 22. The airflow pushes the reset ring 221 upward, and the spring overcomes the resistance of dust accumulation to achieve forced reset.

[0053] Under normal conditions, the stop block 34 supports the trigger piston 32, and the limit ring 5 presses down on the top of the trigger piston 32, locking the trigger piston 32 in both directions, and the compression spring 33 has no stored energy. When the button 22 is pressed, the drive ramp 71 of the drive rod 7 compresses the stop block 34 outward, and at the same time, the trigger ring 31 presses down to compress the compression spring 33 to store energy; after the button 22 is fully pressed down, the stop block 34 completely retracts to unlock the trigger piston 32, and the compression spring 33 pushes the trigger piston 32 to quickly press down to compress the air in the air supply groove 2112, generating a high-pressure airflow that is delivered to the air blowing groove 2111 of the adjacent button 22. When the button 22 is released, the button 22 pulls the trigger piston 32 back to its original position, the drive rod 7 separates from the stop block 34, the spring 4 pushes the stop block 34 back, the arc-shaped guide surface 341 of the stop block 34 avoids the piston moving upward, after the trigger piston 32 passes the stop block 34, the stop block 34 supports the piston again, and with the help of the limit ring 5, the locking reset is completed, and then the button unit 2 is on standby in a cycle.

[0054] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An elevator control panel, characterized in that: The device includes a housing (1), an industrial automatic control system device manufacturing panel (11) covering the opening of the housing (1), and multiple button units (2) disposed on the industrial automatic control system device manufacturing panel (11); each button unit (2) includes a housing (21), a button (22), a plunger (23), a return spring (24), and a circuit board (25); a partition plate (211) is disposed inside the housing (21); the partition plate (211) divides the inside of the housing (21) into an active chamber and a passive chamber; the button (22) is slidably disposed in the active chamber; the circuit board (25) is fixedly connected to the passive chamber; the circuit board (25) is fixedly connected to the passive chamber; the circuit board (25) is fixedly disposed in the passive chamber; the circuit board (25) is fixedly connected to the passive chamber; the circuit board (25) is fixedly disposed in the passive chamber; the circuit board (25) is fixedly disposed in the passive chamber; the circuit board (211) is fixedly disposed in the passive chamber; the circuit board (2 ... The plate (25) is provided with two trigger heads (251); one end of the plunger (23) is connected to the button (22); the other end of the plunger (23) passes through the partition plate (211) and is provided with a trigger metal piece (231); the two ends of the reset spring (24) abut against the button (22) and the partition plate (211) respectively; the button (22) is provided with a reset ring (221); the partition plate (211) is provided with an annular air-blowing groove (2111); the partition plate (211) is provided with an instantaneous air supply unit (3); the air-blowing groove (2111) is connected to the instantaneous air supply unit (3) of the adjacent button unit (2).

2. The elevator control box according to claim 1, characterized in that: The instantaneous air supply unit (3) includes a trigger ring (31), an annular trigger piston (32), a compression spring (33), and multiple stops (34); the trigger ring (31) is disposed on the button (22); an annular air supply groove (2112) is provided on the partition plate (211); a connecting hole is provided on the bottom wall of the annular air supply groove (2112); the connecting holes of two adjacent button units (2) are connected by an air pipe (6); the trigger piston (32) is slidably disposed on the... The air supply groove (2112) is provided with multiple sliding grooves on its side wall; the multiple sliding grooves are evenly distributed along the circumference of the air supply groove (2112); multiple stops (34) are slidably disposed in the multiple sliding grooves; one end of the stop (34) extends into the air supply groove (2112) and abuts against the bottom wall of the trigger piston (32); the two ends of the compression spring (33) are respectively connected to the trigger ring (31) and the trigger piston (32).

3. An elevator control box according to claim 2, characterized in that: The outer casing (21) is provided with a plurality of spring pieces (4); the plurality of spring pieces (4) are respectively connected to the end of the plurality of stops (34) away from the air supply groove (2112).

4. An elevator control box according to claim 2, characterized in that: The bottom of the stop block (34) located at one end inside the air supply groove (2112) has an arc-shaped guide surface (341).

5. An elevator control box according to claim 2, characterized in that: The button (22) is provided with a plurality of drive rods (7); the plurality of drive rods (7) correspond one-to-one with the plurality of stops (34); the bottom wall of the plurality of drive rods (7) is provided with a drive slope (71); the end of the stop (34) away from the air supply groove (2112) is provided with a sliding hole corresponding to the drive rod (7); the top opening of the sliding hole is provided with a driven slope (342); after the button (22) slides, the drive slope (71) and the driven slope (342) are either in contact or away from each other.

6. An elevator control box according to claim 5, characterized in that: The slide groove is in two sets; the two sets of slide grooves are respectively opened on the inner and outer side walls of the air supply groove (2112); the multiple blocks (34) are correspondingly slidably arranged in the multiple slide grooves.

7. An elevator control box according to claim 2, characterized in that: A limiting ring (5) is provided inside the air supply groove (2112); the bottom wall of the limiting ring (5) abuts against the top wall of the trigger piston (32).

8. An elevator control box according to claim 7, characterized in that: The limiting ring (5) includes a first limiting part disposed on the inner ring side wall of the air supply groove (2112) and a second limiting part disposed on the outer ring side wall of the air supply groove (2112).

9. An elevator control box according to claim 1, characterized in that: The two ends of the trigger metal piece (231) are respectively provided with contacts (2311) corresponding to the two trigger heads (251).

10. An elevator control panel according to claim 1, characterized in that: The housing (1) contains a main control circuit board and a power conversion board; a glass display screen is embedded on the outside of the industrial automatic control system device manufacturing panel (11); the main control circuit board is electrically connected to the power conversion board, the glass display screen and the multiple button units (2) via busbars.

Images