Relay with undervoltage and overvoltage protection functions

Abstract

The utility model relates to the technical field of relays, in particular to a relay with undervoltage and overvoltage protection functions, which comprises a relay, a fixing structure and a fixing block, two sides of the relay are respectively provided with a plurality of wiring grooves, two sides of an opening of each wiring groove are respectively provided with a sliding groove, and one side of each wiring groove is provided with a connecting hole. A wire is bent into a ring shape, inserted into a wiring groove and sleeved on a convex column of a wiring seat, then clamping blocks on the two sides are moved inwards, meanwhile, a rectangular plate is moved downwards, the rectangular plate drives a plurality of sleeves to drive a pressing block to move downwards, and after the pressing block makes contact with the wire, the sleeves drive first springs to be compressed; the elastic force of the first spring acts on the pressing block so as to fix the end part of the wire on the wire holder, meanwhile, the rectangular plate drives the fixing plate to move downwards, the outer side of the wire is fixed through the first arc-shaped groove and the second arc-shaped groove, then the clamping block is loosened so that the clamping block is clamped with the jack, and thus the wire is fixed on the relay.

Description

Technical Field

[0001] The utility model relates to the technical field of relays, in particular to a relay with undervoltage and overvoltage protection functions. Background Art

[0002] In modern electrical systems, relays are key components in circuit control, and their stability and safety are crucial to the normal operation of the entire system. Therefore, designing a relay with undervoltage and overvoltage protection functions that can promptly cut off the circuit when voltage is abnormal to prevent equipment damage is of great practical significance.

[0003] For example, the authorization announcement number CN214624900U is a relay with overvoltage, undervoltage and delay protection. The above document adopts a digital tube display and button settings, which is convenient to operate, has a clear display, strong readability, and high parameter setting accuracy. It adopts a unique hardware and structural design, low cost, a slim shell, a small size, and does not take up space. However, when the relay with undervoltage and overvoltage protection functions in the above document is used, when the external equipment or power wire is connected to the relay, the head end of the wire is usually tightened to the terminal of the relay by a bolt, so that the relay is easily affected by the vibration generated by the external equipment during operation during use, which may cause the bolt to loosen, and easily lead to poor contact between the wire and the relay. The wiring slot and the bolts used to fix the wire are exposed inside the external space, which may easily cause dust to accumulate on the outer surface of the wiring slot or the bolt, and easily cause dust accumulation to cause the wire or the terminal block to overheat and the voltage deviation, thereby affecting the accuracy of the voltage detection of the internal voltage detection module, thereby affecting the operation of the equipment. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that the existing relay is easily affected by the vibration generated by external equipment during operation, which may cause the bolts to loosen and the problem that dust accumulates on the outer surface of the wiring slot or the bolt. A relay with undervoltage and overvoltage protection functions is proposed.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] Design a relay with undervoltage and overvoltage protection functions, including a relay, a fixing structure and a fixing block;

[0007] A plurality of wiring slots are provided on both sides of the relay, and slide slots are provided on both sides of the opening of the wiring slots;

[0008] A connecting hole is provided on one side of the wiring slot, a rectangular slot is provided on a side of the relay away from the wiring slot, and a plurality of the wiring slots are respectively connected to the rectangular slot through the connecting holes;

[0009] Insert holes are respectively provided on both sides of the rectangular slot, and the insert holes on both sides are distributed in a mirror image;

[0010] A fixing structure is provided in the middle of the wiring slot, and two ends of the relay are fixedly connected to a plurality of fixing blocks.

[0011] Preferably, the fixing structure includes a wiring assembly, a limiting assembly and a fixing plate;

[0012] The wiring assembly is arranged inside the wiring slot, and the wiring assembly is used to connect the wire to the relay;

[0013] A plurality of wiring components are provided on one side of the limit component, and the limit component is used to limit the limit component;

[0014] A plurality of fixing plates are provided on the other side of the limiting assembly for fixing the wires;

[0015] One side of the fixing plate is in contact with the relay, ensuring that there is no gap between the contact surfaces of the fixing plate and the relay.

[0016] Preferably, the wiring assembly includes a wiring seat, a pressure block, a guide rod, a sleeve and a first spring;

[0017] The outer wall of the wiring seat is fixedly connected to the wiring slot, and the wiring seat is electrically connected to the electrical connection end of the relay;

[0018] The middle part of the wiring seat matches the pressing block, and the pressing block can slide along the wiring seat to fix the wire;

[0019] The end of the pressing block is fixedly connected to the guide rod, and the guide rod is clearance-matched with one side of the wiring seat, so that the guide block can drive the pressing block to move;

[0020] The outer wall of the guide rod matches the sleeve, and the outer wall of the sleeve matches the wiring seat. The sleeve can slide along the wiring seat and the sleeve can slide along the outer wall of the guide rod at the same time.

[0021] The cross-sectional diameter of the sleeve is the same as that of the connecting hole, the sleeve matches the connecting hole, and the sleeve can slide along the connecting hole;

[0022] The two ends of the first spring are fixedly connected to the guide rod and the sleeve respectively, and the sleeve can drive the first spring to compress.

[0023] Preferably, the limiting assembly includes a rectangular plate, a clamping block and a second spring;

[0024] One end of the rectangular plate is fixedly connected to a plurality of sleeves, and the rectangular plate can drive the plurality of sleeves to move simultaneously;

[0025] Guide grooves are respectively provided on both sides of the rectangular plate, and the guide grooves on both sides are distributed in a mirror image;

[0026] The end of the guide groove is fixedly connected to one end of the second spring, and the other end of the second spring is connected to the clamping block, which can drive the spring to compress;

[0027] The outer wall of the clamping block matches the guide groove, and the clamping block can move along the guide groove.

[0028] Preferably, the size of the rectangular plate is exactly the same as that of the rectangular groove, and the rectangular plate can be embedded in the interior of the rectangular groove;

[0029] The guide groove corresponds to the connecting hole, one side of the clamping block has the same size as the connecting hole, and the clamping block can be connected to the connecting hole.

[0030] Preferably, the ends of the plurality of fixing plates are fixedly connected to the rectangular plate, and the rectangular plate can drive the fixing plate to move;

[0031] A connecting groove is provided on one side of the fixing plate, and the size of the connecting groove is the same as that of one side of the fixing block, and the connecting groove can match the fixing block;

[0032] A first arc-shaped groove is provided on one side of the connecting groove, and the first arc-shaped groove is used to fix the wire.

[0033] A plurality of sliders are provided at one end of the fixing plate adjacent to the connecting groove. The shape of the sliders is the same as that of the sliding groove and the sliders match the sliding groove. The sliders can slide inside the sliding groove.

[0034] Preferably, a second arcuate groove is provided at one end of the fixing block, and the size and shape of the second arcuate groove are exactly the same as those of the first arcuate groove, and the outer wall of the wire is clamped and fixed by the cooperation of the second arcuate groove and the first arcuate groove.

[0035] Preferably, the relay is provided with an overvoltage and undervoltage protection module inside. When the power supply voltage exceeds or falls below a preset value, the relay will trigger an action to cut off or connect the circuit to protect the load equipment.

[0036] The utility model provides a relay with undervoltage and overvoltage protection functions, the beneficial effect of which is that the wire is bent into a ring shape, inserted into the interior of the wiring slot and sleeved on the convex column of the wiring seat, and then the clamping blocks on both sides are moved inward, and the rectangular plate is moved downward at the same time. The rectangular plate drives multiple sleeves to drive the pressure block to move downward, and after the pressure block contacts the wire, the sleeve drives the first spring to compress, and the elastic force of the first spring acts on the pressure block to fix the end of the wire on the wiring seat. At the same time, the rectangular plate drives the fixing plate to move downward, and fixes the outer side of the wire through the first arc groove and the second arc groove. Then, the clamping block is loosened so that the clamping block is engaged with the jack, thereby fixing the wire to the relay. This method replaces the original bolt connection method, and avoids the situation that the relay is easily affected by the vibration generated during the operation of external equipment during long-term use, which causes the bolt to loosen and causes poor contact between the wire and the relay;

[0037] By fitting the rectangular plate and the rectangular groove, the fixing plate and the fixing block, and the fixing plate and the relay, external dust is prevented from entering the interior of the wiring groove, causing a large amount of dust accumulation between the wiring terminal and the terminal block, causing the internal temperature to be high, resulting in voltage deviation and affecting the normal operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a schematic diagram of the structure of the utility model;

[0039] Figure 2 for Figure 1 A schematic diagram of a partial cross-sectional structure;

[0040] Figure 3 for Figure 1 Schematic diagram of the top view structure;

[0041] Figure 4 for Figure 3 Schematic diagram of the structure of A;

[0042] Figure 5 for Figure 1 Structural diagram of the fixed structure;

[0043] Figure 6 for Figure 1 Schematic diagram of the structural decomposition of the middle limit assembly;

[0044] Figure 7 for Figure 1 Schematic diagram of the cross-sectional structure of the central wiring structure.

[0045] In the figure: 1. Relay; 101. Rectangular groove; 102. Wiring groove; 103. Connecting hole; 104. Jack; 105. Slide; 2. Fixed structure; 201. Wiring assembly; 2011. Wiring seat; 2012. Pressure block; 2013. Guide rod; 2014. Sleeve; 2015. First spring; 202. Limiting assembly; 2021. Rectangular plate; 2022. Block; 2023. Second spring; 2024. Guide groove; 203. Fixed plate; 2031. Slider; 2032. Connecting groove; 2033. First arc groove; 3. Fixed block; 301. Second arc groove; 4. Overvoltage and undervoltage protection module. DETAILED DESCRIPTION

[0046] The present invention will be further described below with reference to the accompanying drawings:

[0047] A relay with undervoltage and overvoltage protection functions is proposed in this embodiment. Figure 1 、 Figure 2 and Figure 3 As shown, multiple wiring slots 102 are provided on both sides of the relay 1, and a connecting hole 103 is provided on the top of the wiring slot 102. Multiple rectangular slots 101 are processed on the outside of the relay 1, and multiple connecting slots 2032 are provided. Every four connecting slots 2032 are connected to the rectangular slot 101 on one side through the corresponding connecting hole 103. A jack 104 is provided on both sides of the rectangular slot 101. A fixed structure 2 is provided inside the wiring slot 102, and a slide groove 105 is provided on both sides of the opening of the wiring slot 102. Multiple fixing blocks 3 are provided at both ends of the relay 1. The fixing block 3 is located in the middle of the wiring opening position. The number of wiring slots 102 is the same as the number of fixing blocks 3. An overvoltage and undervoltage protection module 4 is provided inside the relay 1. The fixed structure 2 includes a wiring assembly 201, a limit assembly 202 and a fixing plate 203.

[0048] like Figure 1 、 Figure 5 and Figure 7As shown, the wiring assembly 201 includes a wiring seat 2011, a pressure block 2012, a guide rod 2013, a first spring 2015 and a sleeve 2014. The number of wiring assemblies 201 is the same as the number of wiring slots 102. The outer wall of the wiring seat 2011 is fixed to the inside of the wiring slot 102. The bottom of the wiring seat 2011 is provided with a boss, which is convenient for personnel to bend the connecting end of the wire into a ring and put it on the wiring seat 2011. The outer wall of the pressure block 2012 fits with the wiring seat 2011, and the pressure block 2012 can slide along the wiring seat 2011. The middle part of the pressure block 2012 is provided with a hole of the same size as the bottom boss of the wiring seat 2011, so that the pressure block 2012 and the wiring seat 2011 can press the wire more stably. The top of the pressure block 2012 is fixedly connected to the guide rod 2013, and the outer wall of the guide rod 2013 is connected to the sleeve The tube 2014 is slidably connected, and the sleeve 2014 can slide along the outer wall of the guide rod 2013. The cross-sectional diameter of the sleeve 2014 is the same as the top of the wiring seat 2011 and the connecting hole 103. The sleeve 2014 can slide along the wiring seat 2011 and the connecting hole 103. The two ends of the first spring 2015 are fixedly connected to the guide rod 2013 and the sleeve 2014 respectively. The first spring 2015 supports the guide rod 2013 and the sleeve 2014. The sleeve 2014 can drive the guide rod 2013 to move, and the guide rod 2013 drives the pressure block 2012 to move. When the pressure block 2012 contacts the wire, the sleeve 2014 continues to move and the sleeve 2014 drives the first spring 2015 to compress. The elastic force of the first spring 2015 acts on the pressure block 2012 through the guide rod 2013 to fix the wire.

[0049] like Figure 1 、 Figure 5 and Figure 6 As shown, the limit assembly 202 includes a rectangular plate 2021, a block 2022 and a second spring 2023. The bottom end of the rectangular plate 2021 is fixedly connected to the four sleeves 2014. The rectangular plate 2021 can drive the four sleeves 2014 to move simultaneously. The size of the rectangular plate 2021 is the same as that of the rectangular groove 101. The rectangular plate 2021 can match the rectangular groove 101. Guide grooves 2024 are respectively provided on both sides of the rectangular plate 2021. The guide grooves 2024 match the block 2022. The two ends of the second spring 2023 are respectively fixedly connected to the block 2022 and the guide groove 2024. The block 2022 can slide along the guide groove 2024 and drive the second spring 2023 to be compressed. The cross-sectional diameter of the extended end of the block 2022 is the same as the size of the socket 104, and the block 2022 can match the socket 104.

[0050] like Figure 1 and Figure 5As shown, one end of the four fixed plates 203 is fixedly connected to the rectangular plate 2021, and the rectangular plate 2021 can drive the four fixed plates 203 to be fixedly connected. The bottom of the fixed plate 203 is provided with a connecting groove 2032. The size of the connecting groove 2032 is the same as that of one side of the fixed block 3. The fixed plate 203 can fit with the fixed block 3. One side of the fixed plate 203 fits with the relay 1. A plurality of sliders 2031 are provided on one side of the bottom end of the fixed plate 203, which slide and match the slide groove 105. The fixed plate 203 can drive the slider 2031 to slide along the slide groove 105. A first arc groove 2033 is provided on one side of the connecting groove 2032, and a second arc groove 301 is provided at one end of the fixed block 3. The first arc groove 2033 and the second arc groove 301 are the same size. The fixed plate 203 is moved downward so that the first arc groove 2033 and the second arc groove 301 clamp and fix the wire. At the same time, the fixed plate 203 and the fixed block 3 are in contact with each other to prevent dust from entering the wiring groove 102.

[0051] like Figure 2 As shown, when the power supply voltage exceeds or falls below the preset value, the relay 1 will trigger the action to cut off or connect the circuit to protect the load equipment. It consists of a voltage detection device and a control module. The voltage detection device uses a high-precision voltage sensor to monitor the power supply voltage in real time. The sensor converts the detected voltage signal into an electrical signal and transmits it to the control module;

[0052] After receiving the voltage signal, the control module compares it with the preset undervoltage and overvoltage thresholds. When the voltage is lower than the undervoltage threshold or higher than the overvoltage threshold, the control module will issue a command to drive relay 1 to operate;

[0053] A display module is set in the middle of the top of relay 1. In order to facilitate users to understand the real-time status of the power supply voltage, this design is also equipped with a display module. The display module can display the power supply voltage value and undervoltage and overvoltage status in real time;

[0054] Specifically, after the power is turned on, the voltage detection device starts to monitor the power supply voltage in real time. After the control module receives the voltage signal, it compares it with the preset undervoltage and overvoltage thresholds. When the power supply voltage is normal, relay 1 maintains its original state and the circuit works normally. When the power supply voltage is lower than the undervoltage threshold, the control module issues an instruction, relay 1 cuts off the circuit to prevent the equipment from being damaged due to undervoltage. At the same time, the display module displays the undervoltage status. When the power supply voltage is higher than the overvoltage threshold, the control module issues an instruction, relay 1 cuts off the circuit to prevent the equipment from being damaged due to overvoltage. At the same time, the display module displays the overvoltage status.

[0055] Working principle:

[0056] When the relay 1 is connected to the wire of the device, the rectangular plate 2021 is first moved upward to separate the pressure block 2012 from the protrusion of the terminal block 2011, the wire is bent into a ring, inserted into the interior of the wiring slot 102 and sleeved on the protrusion of the terminal block 2011, and then the clamping blocks 2022 on both sides are moved inward. The clamping blocks 2022 drive the second spring 2023 to be compressed, and at the same time, the rectangular plate 2021 is moved downward. The rectangular plate 2021 drives multiple sleeves 2014 to move downward, and the sleeve 2014 drives the pressure block 2012 to move downward through the guide rod 2013. After the pressure block 2012 contacts the wire, the sleeve 2014 continues to move, and the sleeve 2014 drives the first spring 2015 to be compressed. The elastic force of the first spring 2015 acts on the pressure block 2012, thereby fixing the end of the wire to the terminal block 20 11, and at the same time, the rectangular plate 2021 drives the fixed plate 203 to move downward, and the fixed plate 203 drives the slider 2031 to slide downward along the slide groove 105 and fit into the fixed block 3, and fix the outside of the wire through the first arc groove 2033 and the second arc groove 301, and then release the clamping block 2022, and the elastic force of the second spring 2023 drives the clamping block 2022 to engage with the jack 104, thereby restricting the sleeve 2014, and the rectangular plate 2021 and the rectangular groove 101 fit together, the fixed plate 203 fits together with the fixed block 3, and the fixed plate 203 fits together with the relay 1, thereby preventing external dust from entering the interior of the wiring slot 102, resulting in a lot of dust accumulation between the wiring terminal of the wire and the wiring seat 2011, causing the internal temperature to be high, resulting in voltage deviation and affecting the normal operation of the equipment.

[0057] While the present invention has been shown and described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A relay with undervoltage and overvoltage protection functions, characterized by: including a relay, a fixing structure and a fixing block; A plurality of wiring slots are provided on both sides of the relay, and slide slots are provided on both sides of the opening of the wiring slots; A connecting hole is provided on one side of the wiring slot, a rectangular slot is provided on a side of the relay away from the wiring slot, and a plurality of the wiring slots are respectively connected to the rectangular slot through the connecting holes; Insert holes are respectively provided on both sides of the rectangular slot, and the insert holes on both sides are distributed in a mirror image; A fixing structure is provided in the middle of the wiring slot, and two ends of the relay are fixedly connected to a plurality of fixing blocks.

2. The relay with undervoltage and overvoltage protection functions according to claim 1, characterized in that: The fixing structure includes a wiring assembly, a limiting assembly and a fixing plate; The wiring assembly is arranged inside the wiring slot, and the wiring assembly is used to connect the wire to the relay; A plurality of wiring components are provided on one side of the limit component, and the limit component is used to limit the limit component; A plurality of fixing plates are provided on the other side of the limiting assembly for fixing the wires; One side of the fixing plate is in contact with the relay, ensuring that there is no gap between the contact surfaces of the fixing plate and the relay.

3. The relay with undervoltage and overvoltage protection functions according to claim 2, characterized in that: The wiring assembly includes a wiring seat, a pressure block, a guide rod, a sleeve and a first spring; The outer wall of the wiring seat is fixedly connected to the wiring slot, and the wiring seat is electrically connected to the electrical connection end of the relay; The middle part of the wiring seat matches the pressing block, and the pressing block can slide along the wiring seat to fix the wire; The end of the pressing block is fixedly connected to the guide rod, and the guide rod is clearance-matched with one side of the wiring seat, so that the guide block can drive the pressing block to move; The outer wall of the guide rod matches the sleeve, and the outer wall of the sleeve matches the wiring seat. The sleeve can slide along the wiring seat and the sleeve can slide along the outer wall of the guide rod at the same time. The cross-sectional diameter of the sleeve is the same as that of the connecting hole, the sleeve matches the connecting hole, and the sleeve can slide along the connecting hole; The two ends of the first spring are fixedly connected to the guide rod and the sleeve respectively, and the sleeve can drive the first spring to compress.

4. The relay with undervoltage and overvoltage protection functions according to claim 3, characterized in that: The limiting assembly includes a rectangular plate, a clamping block and a second spring; One end of the rectangular plate is fixedly connected to a plurality of sleeves, and the rectangular plate can drive the plurality of sleeves to move simultaneously; Guide grooves are respectively provided on both sides of the rectangular plate, and the guide grooves on both sides are distributed in a mirror image; The end of the guide groove is fixedly connected to one end of the second spring, and the other end of the second spring is connected to the clamping block, which can drive the spring to compress; The outer wall of the clamping block matches the guide groove, and the clamping block can move along the guide groove.

5. The relay with undervoltage and overvoltage protection functions according to claim 4, characterized in that: The size of the rectangular plate is exactly the same as that of the rectangular groove, and the rectangular plate can be embedded in the interior of the rectangular groove; The guide groove corresponds to the connecting hole, one side of the clamping block has the same size as the connecting hole, and the clamping block can be connected to the connecting hole.

6. The relay with undervoltage and overvoltage protection functions according to claim 2, characterized in that: The ends of the plurality of fixed plates are fixedly connected to the rectangular plate, and the rectangular plate can drive the fixed plate to move; A connecting groove is provided on one side of the fixing plate, and the size of the connecting groove is the same as that of one side of the fixing block, and the connecting groove can match the fixing block; A first arc-shaped groove is provided on one side of the connecting groove, and the first arc-shaped groove is used to fix the wire; A plurality of sliders are provided at one end of the fixing plate adjacent to the connecting groove. The shape of the sliders is the same as that of the sliding groove and the sliders match the sliding groove. The sliders can slide inside the sliding groove.

7. The relay with undervoltage and overvoltage protection functions according to claim 2, characterized in that: A second arcuate groove is provided at one end of the fixing block. The size and shape of the second arcuate groove are exactly the same as those of the first arcuate groove. The outer wall of the wire is clamped and fixed by the cooperation of the second arcuate groove and the first arcuate groove.

8. The relay with undervoltage and overvoltage protection functions according to claim 1, characterized in that: The relay is internally provided with an overvoltage and undervoltage protection module. When the power supply voltage exceeds or falls below a preset value, the relay will trigger an action to cut off or connect the circuit to protect the load equipment.

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