Device for detecting on-off state of pressing plate

Abstract

The utility model discloses a pressing plate on-off state detection device comprising a housing which is internally provided with a cavity; a main control board is mounted in the cavity, and a microswitch and a photoelectric sensor are arranged on the main control board; a through opening is formed in the first side of the shell, a touch block is movably installed on the through opening, and the first end of the touch block protrudes out of the shell; the touch block is provided with a first position and a second position, the second end of the touch block is far away from the microswitch at the first position, and the second end of the touch block abuts against the microswitch at the second position; and the touch block is matched with the photoelectric sensor. The detection reliability and the detection precision of the on-off state of the pressing plate can be improved.

Description

Technical Field

[0001] This utility model relates to the field of power anti-misoperation detection technology, and in particular to a pressure plate activation / deactivation status detection device. Background Technology

[0002] In one-click sequential control scenarios, the pressure plate, as a crucial component of secondary equipment operation, has now largely achieved wired on-site detection and transmission functions for conventional continuous pressure plates and spring-loaded pressure plates. Specifically, by using a pressure plate detector and a magnetic attachment, the pressure plate detector incorporates multiple main control boards, each equipped with a Hall element corresponding to a specific pressure plate. The magnetic attachment, containing a permanent magnet, is mounted on a rotatable pressure plate switch. When the pressure plate is engaged or disengaged, the switch moves the magnetic attachment away from or towards the Hall element. The Hall element determines the engagement or disengagement status of the pressure plate, and the pressure plate detector then transmits the signal via wired connection to the pressure plate controller, which in turn sends the pressure plate status signal.

[0003] However, the magnetic force of the magnetic steel accessories can weaken due to vibration or aging, and their installation position may shift due to mechanical wear or vibration. These factors all affect the reliability and accuracy of detecting the engagement / disengagement status of the pressure plate. Therefore, the reliability and accuracy of existing pressure plate engagement / disengagement status detection devices still need to be improved. Utility Model Content

[0004] The purpose of this invention is to provide a pressure plate engagement / disengagement status detection device, which can improve the reliability and accuracy of pressure plate engagement / disengagement status detection.

[0005] The technical solutions for achieving the above objectives include the following:

[0006] This utility model proposes a pressure plate engagement / disengagement status detection device, including a housing, the housing having a cavity inside;

[0007] The cavity is equipped with a main control board, which is equipped with micro switches and photoelectric sensors.

[0008] The first side of the housing is provided with a through-hole, and an actuating block is movably mounted on the through-hole, with the first end of the actuating block protruding from the housing;

[0009] The actuating block has a first position and a second position. In the first position, the second end of the actuating block is away from the micro switch. In the second position, the second end of the actuating block abuts against the micro switch. The actuating block cooperates with the photoelectric sensor.

[0010] In one embodiment, the actuating block is provided with a through hole extending from a first end of the actuating block to a second end of the actuating block, and the through hole allows light from the photoelectric sensor to pass through.

[0011] In one embodiment, the actuating block includes a slider, a first support, and a second support. The slider is slidably disposed on the opening. The top end of the slider is provided with the first support, and the bottom end of the slider is provided with the second support. The first support abuts against the top wall of the housing, and the second support abuts against the bottom wall of the housing.

[0012] In one embodiment, the slider is at least partially made of an elastic material.

[0013] In one embodiment, the second end of the actuating block is provided with a blind hole that cooperates with the micro switch, the through hole is located below the blind hole, and the through hole intersects with the blind hole.

[0014] In one embodiment, both ends of the first side of the housing have outwardly extending extension arms, and a first slot is formed between the two extension arms. The side of the extension arm facing the other extension arm has an arc-shaped wall and an inclined wall.

[0015] In one embodiment, the second side of the housing is at least partially recessed inward to form a triangular second slot.

[0016] In one embodiment, the housing is provided with a light guide post, and the main control board is provided with LED beads, which are inserted into the light guide post.

[0017] In one embodiment, the main control board is further provided with a control chip and a wireless transmission module. The control chip is electrically connected to the micro switch, the photoelectric sensor, the wireless transmission module, and the LED beads.

[0018] In one embodiment, the housing includes a bottom shell and a top cover, the top cover being detachably connected to the bottom shell, the top cover having a battery compartment, and a cover for closing the battery compartment.

[0019] The technical solution provided by this utility model has the following advantages and effects:

[0020] By integrating microswitches and optical sensors on the main control board and dynamically setting the trigger block, when the continuous knife switch of the pressure plate is displaced, the trigger block synchronously triggers the on / off signal of the microswitches and the optical path sensing change signal of the photoelectric sensor, thereby detecting the change in the pressure plate state, improving the accuracy of pressure plate state detection, and ensuring accurate and reliable detection. Attached Figure Description

[0021] The accompanying drawings illustrate specific examples of the technical solutions described in this utility model, and together with the detailed embodiments, form part of the specification, serving to explain the technical solutions, principles, and effects of this utility model.

[0022] Unless otherwise specified or defined, the same reference numerals in different figures represent the same or similar technical features, and different reference numerals may be used to represent the same or similar technical features.

[0023] Figure 1 This is a 3D view of the pressure plate;

[0024] Figure 2 This is a perspective view of an embodiment of the detection device of this utility model;

[0025] Figure 3 This is a left view of an embodiment of the detection device of this utility model;

[0026] Figure 4 This is an exploded view of an embodiment of the detection device of this utility model;

[0027] Figure 5 This is a perspective view of the trigger block in an embodiment of the detection device of this utility model;

[0028] Figure 6 This is a perspective view of the upper cover in an embodiment of the detection device of this utility model.

[0029] Figure 7 This is a schematic diagram of the first state of the pressure plate on the screen cabinet;

[0030] Figure 8 This is a schematic diagram of the second state of the pressure plate on the screen cabinet.

[0031] Explanation of reference numerals in the attached figures:

[0032] 100. Pressure plate engagement / disengagement status detection device.

[0033] 110. Bottom casing; 111. Power switch;

[0034] 120. Top cover; 121. Battery compartment; 122. Compartment cover.

[0035] 130. Housing; 132. Opening; 133. Extension arm; 1331. Arc-shaped wall; 1332. Sloping wall; 134. First slot; 135. Second slot.

[0036] 140. Main control board,

[0037] 150. PCB board; 151. Micro switch; 152. Photoelectric sensor.

[0038] 160. Actuating block; 161. Sliding member; 162. First support member; 163. Second support member; 164. Blind hole; 165. Through hole. Detailed Implementation

[0039] To facilitate understanding of this utility model, the specific embodiments of this utility model will be described in more detail below with reference to the accompanying drawings.

[0040] Unless otherwise specified or defined, the terms "first," "second," etc., used in this document are for distinguishing names only and do not represent a specific number or order.

[0041] Unless otherwise specified or defined, the term “and / or” as used herein includes any and all combinations of one or more of the associated listed items.

[0042] It should be noted that when a component is considered "fixed" to another component, it can be directly fixed to the other component or there can be an intervening component; when a component is considered "connected" to another component, it can be directly connected to the other component or there can be an intervening component; when a component is considered "mounted" on another component, it can be directly mounted on the other component or there can be an intervening component; when a component is considered "placed" on another component, it can be directly placed on the other component or there can be an intervening component.

[0043] To improve the detection accuracy and reliability of the pressure plate engagement / disengagement status, this invention employs a photoelectric sensor and a micro switch, enabling the photoelectric sensor and micro switch to trigger in tandem. Through redundant verification of the photoelectric-micro switch dual-state signals, the problem of detection failure caused by mechanical tolerances is solved, significantly improving the reliability of the pressure plate engagement / disengagement status detection data.

[0044] Specifically, the pressure plate is as follows Figure 1 As shown, the pressure plate engagement / disengagement status detection device provided in this embodiment is as follows: Figure 2-4As shown. The pressure plate engagement / disengagement status detection device 100 is used to detect the engagement / disengagement status of the secondary circuit relay protection pressure plate. The pressure plate engagement / disengagement status detection device 100 includes a bottom shell 110 and a top cover 120, with the top cover 120 snapped onto the bottom shell 110. The connection between the top cover 120 and the bottom shell 110 is not limited to a snap-fit ​​connection; other detachable connection methods can also be used; even the top cover 120 and the bottom shell 110 can be integrally manufactured. After the top cover 120 and the bottom shell 110 are connected, they form a housing 130, which has a cavity. A main control board 140 is installed in the cavity. In this embodiment, the main control board 140 is a PCB board 150, but the main control board 140 is not limited to a PCB board 150; it can also be other control devices that can achieve equivalent functions. A control chip is integrated on the PCB board 150. The control chip is used to receive the detection signal of the pressure plate engagement / disengagement status and determine whether the pressure plate engagement / disengagement status is in the closed or open position based on the detection signal. The PCB board 150 also integrates a micro switch 151 and a photoelectric sensor 152, which are used to generate detection signals for the engagement / disengagement status of the pressure plate. That is, when the pressure plate 200 moves from the closed position to the open position or from the open position to the closed position, the micro switch 151 and the photoelectric sensor 152 will generate different signals and send them to the control chip to detect the engagement / disengagement status of the pressure plate.

[0045] To enable the continuous blade switch 210 of the pressure plate 200 to trigger the micro switch 151 and the photoelectric sensor 152, this embodiment provides a through-hole 132 on the first side of the housing 130. An actuating block 160 is slidably mounted on the through-hole 132, with its first end protruding from the housing 130. When the pressure plate 200 is in the closed position, the continuous blade switch 210 abuts against the first end of the actuating block 160; when the pressure plate 200 is in the open position, the continuous blade switch 210 moves away from the first end of the actuating block 160. When the pressure plate 200 moves from the open to the closed position, the continuous blade switch 210 squeezes and pushes the actuating block 160 along the through-hole 132 into the housing 130. The second end of the actuating block 160 is located inside the housing 130, adjacent to the micro switch 151. Correspondingly, corresponding to the closed and open positions of the pressure plate 200, the actuating block 160 has a first position and a second position. In the first position, the second end of the actuating block 160 is away from the micro switch 151. In the second position, the second end of the actuating block 160 abuts against the micro switch 151, thereby triggering the micro switch 151.

[0046] Specifically, such as Figure 5As shown, the actuating block 160 includes a slider 161, a first support 162, and a second support 163. The slider 161 can slide through the opening 132. The specific shape of the slider 161 is not limited; it can be a cylinder, a cuboid, a triangular prism, etc. In this embodiment, the slider 161 is an elliptical cylinder, and the shape of the opening 132 is adapted to the shape of the slider 161. The top of the slider 161 is provided with the first support 162, and the bottom of the slider 161 is provided with the second support 163. The first support 162 abuts against the top wall of the housing 130, and the second support 163 abuts against the bottom wall of the housing 130. It should be noted that the abutment can be direct contact or contact with ribs on the top or bottom wall. The first support 162 and the second support 163 ensure that the slider 161 slides more stably on the opening 132. The number of the first support 162 and the second support 163 can be one or two spaced apart. The second end of the actuating block 160 is provided with a blind hole 164 that cooperates with the micro switch 151. When the pressure plate is in the closed position, the blind hole 164 abuts against one end of the micro switch 151.

[0047] In this embodiment, the sliding member 161 is at least partially made of an elastic material, such as silicone. By using an elastic material, when the pressure plate 200 is in the closed position, the actuating block 160 is positioned between the connecting knife switch 210 and the micro switch 151, forming an interference fit with both. The actuating block 160 compensates for the assembly tolerance between the connecting knife switch 210 and the micro switch 151 through its own elastic deformation, ensuring reliable switching of the micro switch 151 contacts. Furthermore, when the pressure plate 200 moves from the closed position to the open position, the actuating block 160 can slide outward from the housing 130 by its own elastic deformation, eliminating the need for additional elastic devices and simplifying the structure.

[0048] Because of the adoption of the photoelectric-micro-motion dual-state signal redundancy verification mechanism, the trigger block 160 also forms a cooperative relationship with the photoelectric sensor 152. That is, the optical sensing signal of the photoelectric sensor 152 when the trigger block 160 is in the first position is different from the optical sensing signal of the photoelectric sensor 152 when the trigger block is in the second position.

[0049] Specifically, in this embodiment, the photoelectric sensor 152 is a reflective photoelectric sensor. The photoelectric sensor 152 is positioned on the PCB board 150 near the through-hole 132, and it emits light horizontally towards the through-hole 132. The actuating block 160 has a through-hole 165 extending from one end to the other, allowing light from the photoelectric sensor 152 to pass through. When the pressure plate 200 is closed, the light emitted by the photoelectric sensor 152 is reflected back after reaching the connecting knife switch 210 of the pressure plate 200 and is received by the photoelectric sensor 152. When the pressure plate 200 is open, the photoelectric sensor 152 receives light reflected from the pressure plate engagement / disengagement status detection device 100 or the cabinet wall arranged side-by-side. When the pressure plate 200 moves from open to closed, the optical signal reflected by the connecting knife switch 210 is significantly enhanced. The photoelectric sensor 152 detects the open / closed state of the pressure plate by detecting this significantly enhanced optical signal change. Similarly, when moving from closed to open, the photoelectric sensor 152 detects the open / closed state by detecting the significantly weakened optical signal change. Therefore, the change in the optical sensing signal can indicate whether the pressure plate 200 is in the closed position. The through hole 165 is located below the blind hole 164, the axis of the through hole 165 is parallel to the axis of the actuating block 160, and the circumference of the through hole 165 intersects with the circumference of the blind hole 164. The structure is simple and easy to manufacture. It should be noted that the photoelectric sensor 152 can also be a through-beam photoelectric sensor, for example, by vertically arranging the transmitter and receiver in the cavity, and then setting vertically arranged through holes at corresponding positions on the actuating block.

[0050] In this embodiment, the PCB board 150 also integrates a wireless transmission module, such as a LoRa module (not shown in the figure). The micro switch 151, photoelectric sensor 152, and wireless transmission module are all electrically connected to the control chip. When the pressure plate 200 performs the engagement / disengagement action, when the pressure plate 200 moves from the open position to the closed position, the connecting knife switch 210 of the pressure plate 200 gradually approaches and presses against the trigger block 160. The trigger block 160 slides on the through-hole 132 formed by the bottom shell 110 and the top cover 120, gradually approaches and presses against the micro switch 151 and undergoes elastic deformation, finally pressing against the connecting knife switch 210 and triggering the micro switch 151. The micro switch 151 changes from open to closed. At this time, the photoelectric sensor 152 on the PCB board 150 also receives the change in optical sensing signal. The control chip receives the two signals from the micro switch 151 and the photoelectric sensor 152, and after logic verification, transmits the signal through the wireless transmission module. The line transmission module sends a pressure plate status change signal, indicating that the pressure plate detection state has changed from open to closed. The same principle applies when pressure plate 200 moves from closed to open. The connecting knife switch 210 of pressure plate 200 changes from being pressed against the actuating block 160 to gradually moving away. The actuating block 160 recovers from its elastic deformation state and slides away from the micro switch 151 on the through-hole 132. The micro switch 151 changes from closed to open. The photoelectric sensor 152 on the PCB board 150 receives the change in optical sensing signal. The control chip receives both signals from the micro switch 151 and the photoelectric sensor 152, performs logic verification, and then sends the pressure plate status change signal through the wireless transmission module. For example, only when the two signals are consistent, indicating successful logic verification, is the pressure plate status encrypted and uploaded via the LoRa module.

[0051] like Figure 4 As shown, both ends of the first side of the housing 130 have outwardly extending arms 133, and a first slot 134 is formed between the two extending arms 133. One extending arm 133 has an arc-shaped wall 1331 and an inclined wall 1332 on the side facing the other extending arm 133. Through the arc-shaped wall 1331 and the inclined wall 1332, the two studs 211 fixing the continuous knife switch 210 can slide past the inclined wall 1332 and abut against the arc-shaped wall 1331, thereby pushing the first slot 134 into place from the side and locking it onto the two studs 211, realizing the engagement between the pressure plate retraction detection device 100 and the pressure plate 200. The shape of the first slot 134 is preferably matched to the shape of the continuous knife switch 210 of the pressure plate, making the overall appearance more aesthetically pleasing when the pressure plate 200 is in position. The bottom shell 110 is adhered to the cabinet, for example, by pre-applying strong double-sided adhesive to the back of the bottom shell 110. By adopting a slot structure and adhesive bonding method, the detection device can be applied to a wider range of scenarios and is more convenient to use.

[0052] like Figure 6 As shown, at least part of the second side of the housing 130 is recessed inward to form a triangular second slot 135. Figure 7and Figure 8 As shown, pressure plates 200 are arranged in an array on the cabinet, and the second slot 135 can accommodate the connected knife switches 210 on the adjacent pressure plates. For example, the pressure plate activation / deactivation status detection device 100 is installed on pressure plate A, and pressure plate B is to the right of pressure plate A. When pressure plate B is in the open position, the connected knife switches on pressure plate B are facing away from pressure plate B, and the free end of the connected knife switches 210 can be placed in the second slot 135, making better use of the space in the distribution cabinet and facilitating the use of the pressure plate activation / deactivation status detection device 100 in the distribution cabinet.

[0053] The top cover also features a light guide post, and LED beads are mounted on the PCB board 150. The LED beads are inserted into the light guide post and electrically connected to the control chip. When a change in the pressure plate state is detected, the control chip controls the LED beads to flash to represent the pressure plate displacement signal for easy observation.

[0054] The pressure plate engagement / disengagement status detection device in this embodiment is powered by a cylindrical battery. The cylindrical battery connects to the terminal block socket on the PCB board via a terminal plug to power the detection device. The upper cover 120 has a battery compartment 121, and the compartment cover 122 adopts a side-sliding detachable structure to cover the battery compartment 121. When replacing the battery, it is not necessary to disassemble the pressure plate engagement / disengagement status detection device or interrupt the power supply. The built-in backup capacitor can maintain short-term power supply to ensure continuous transmission of status signals. The bottom shell 110 is also provided with a power switch 111. Before the device leaves the factory and during transportation, the power switch 111 can be placed in the off position to reduce battery wear. When installing and using, the power switch 111 is switched to the on position to start the pressure plate engagement / disengagement status detection device.

[0055] When using the pressure plate engagement / disengagement status detection device, after the pressure plate is installed in the corresponding position, the connecting knife gate of the pressure plate moves closer to and presses against the release trigger block 160 during rotation. The trigger block 160 can undergo elastic deformation based on its material properties and reciprocate on the through-hole 132. The through-hole 165 on the trigger block 160 allows light from the photoelectric sensor 152 to pass through. When the trigger block 160 undergoes elastic deformation and reciprocating motion, the micro switch 151 generates an on / off signal, and the photoelectric sensor 152 generates an optical sensing change signal. The engagement / disengagement action of the pressure plate is determined by combining the on / off signal of the micro switch 151 and the optical path sensing change signal of the photoelectric sensor 152 on the main control board 140 with logical verification. After the pressure plate engagement / disengagement status detection device is put into use, it sends pressure plate status signals at fixed time intervals. When the pressure plate engages or disengages, the main control board 140 verifies the on / off signal of the micro switch 151 and the optical path sensing change signal of the photoelectric sensor 152 received by the logic verification to determine the change in the pressure plate status and sends the pressure plate status change signal to the wireless transmission module.

[0056] In summary, by integrating a microswitch and an optical sensor on the main control board, the actuating block can slide through the port. When the continuous knife switch moves, the actuating block simultaneously triggers the on / off signal of the microswitch and the optical path change signal of the photoelectric sensor. This achieves simultaneous detection of pressure plate status changes using two different technologies, improving the accuracy of pressure plate status detection and ensuring accurate and reliable detection. Furthermore, a wireless transmission module is integrated on the main control board. Combined with a pressure plate controller that receives wireless signals, it can fulfill the functions of plug-and-play dual-path detection and verification, and the transmission of pressure plate status signals. Moreover, the use of an elastic actuating block can solve the detection failure problem caused by mechanical tolerances.

[0057] When referencing drawings, new features are explained. To avoid redundant references to drawings that would make the description less concise, features already described will not be referenced again on the drawings if the description is clear.

[0058] The purpose of the above embodiments is to reproduce and derive the technical solution of this utility model by way of example, and to fully describe the technical solution, purpose and effect of this utility model. The purpose is to enable the public to have a more thorough and comprehensive understanding of the disclosed content of this utility model, and it is not intended to limit the protection scope of this utility model.

[0059] The above embodiments are not an exhaustive list based on the present invention, and there may be other embodiments not listed. Any substitutions and improvements made without departing from the concept of the present invention are within the protection scope of the present invention.

Claims

1. A pressure plate engagement / disengagement status detection device, characterized in that, include: A housing having a cavity inside; The cavity is equipped with a main control board, which is equipped with micro switches and photoelectric sensors. The first side of the housing is provided with a through-hole, and an actuating block is movably mounted on the through-hole, with the first end of the actuating block protruding from the housing; The actuating block has a first position and a second position. In the first position, the second end of the actuating block is away from the micro switch. In the second position, the second end of the actuating block abuts against the micro switch. The actuating block cooperates with the photoelectric sensor.

2. The pressure plate engagement / disengagement status detection device as described in claim 1, characterized in that, The trigger block is provided with a through hole, which extends from the first end of the trigger block to the second end of the trigger block, allowing light from the photoelectric sensor to pass through.

3. The pressure plate engagement / disengagement status detection device as described in claim 2, characterized in that, The actuating block includes a slider, a first support, and a second support. The slider is slidably disposed on the through-hole. The top end of the slider is provided with the first support, and the bottom end of the slider is provided with the second support. The first support abuts against the top wall of the housing, and the second support abuts against the bottom wall of the housing.

4. The pressure plate engagement / disengagement status detection device as described in claim 3, characterized in that, The slider is at least partially made of an elastic material.

5. The pressure plate engagement / disengagement status detection device as described in claim 2, characterized in that, The second end of the actuating block is provided with a blind hole that cooperates with the micro switch. The through hole is located below the blind hole and the through hole intersects with the blind hole.

6. The pressure plate engagement / disengagement status detection device as described in claim 1, characterized in that, Both ends of the first side of the housing have outwardly extending extension arms, and a first slot is formed between the two extension arms. The side of the extension arm facing the other extension arm has an arc-shaped wall and an inclined wall.

7. The pressure plate engagement / disengagement status detection device as described in claim 6, characterized in that, The second side of the housing is at least partially recessed inward to form a triangular second slot.

8. The pressure plate engagement / disengagement status detection device as described in any one of claims 1-7, characterized in that, The housing is provided with a light guide column, and the main control board is provided with LED beads, which are inserted into the light guide column.

9. The pressure plate engagement / disengagement status detection device as described in claim 8, characterized in that, The main control board is also equipped with a control chip and a wireless transmission module. The control chip is electrically connected to the micro switch, the photoelectric sensor, the wireless transmission module, and the LED beads.

10. The pressure plate engagement / disengagement status detection device as described in claim 8, characterized in that, The housing includes a bottom shell and a top cover, the top cover being detachably connected to the bottom shell, the top cover having a battery compartment, and a cover for closing the battery compartment.

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