An electric power relay and a protection device thereof

Abstract

The application belongs to the technical field of electrical equipment, and particularly relates to a power relay and a protection device thereof. The relay comprises a shell, the shell is provided with an element module for realizing a relay function, both sides of the shell are provided with external contact points connected with the element module, a bolt is mounted on each of the external contact points, a partition plate is arranged on both sides of each of the external contact points, an air flow groove is formed in the side wall of the shell corresponding to the external contact point, a heat dissipation mechanism is mounted on the shell, and the heat dissipation mechanism comprises a protection cover body covering the shell. The application can better perform heat dissipation treatment on the internal elements of the relay device, the heat dissipation mechanism is used for directly replacing hot air, the protection cover body can further enhance the protection performance of the relay, and the auxiliary fan and the heat dissipation fan can be used to perform cooling treatment on the relay and the wire connecting point connected with the wire during long-term operation of the relay, so that a good equipment operation environment is maintained, and the overall dustproof and protection capability of the relay is further improved.

Description

Technical Field

[0001] This invention belongs to the field of electrical equipment technology, specifically relating to a power relay and its protection device. Background Technology

[0002] A relay is a commonly used electrical control device used in power systems to perform remote control or automation functions of electrical equipment. Depending on the actual needs, it is divided into different types, such as the most commonly used intermediate relays, time relays, and current relays.

[0003] For example, Chinese invention patent application document, publication number CN113488356B, discloses a dustproof relay for power engineering. This invention relates to the field of relays and includes a device body with heat dissipation grooves on its surface. A dustproof device is provided on the surface of the device body, located directly above the heat dissipation grooves. A fixing device is provided on the inner wall of the device body. The dustproof device includes a protective cover, which is fixedly connected to the surface of the device body. A dustproof net is snapped onto the inner wall of the protective cover. A drive mechanism is fixedly connected to the inner wall of the protective cover. A rotating frame is fixedly connected to the surface of the drive mechanism, and the rotating frame is slidably connected to the surface of the dustproof net. This dustproof relay for power engineering, by setting up a dustproof device, when the heat dissipation grooves need to be dustproofed, the dustproof net blocks dust and other debris from entering the device body. At the same time, the drive end of the drive mechanism drives the rotating frame to rotate, causing the rotating frame to absorb the heat generated inside the device body.

[0004] For example, Chinese invention patent application document, publication number CN117198812B, discloses a relay protection device, which relates to the technical field of electrical equipment. It includes a support assembly comprising a housing, a relay body disposed within the housing, a terminal block disposed on one side of the relay body, a partition groove formed on the side of the relay body connected to the terminal block, a cover plate disposed at the upper end of the housing, and a triggering component disposed on the side of the housing near the partition groove; and a blocking assembly comprising a first bracket, a second bracket, a telescopic component disposed within the partition groove, a lifting component disposed on the side of the relay body away from the terminal block, and a locking component disposed on the side of the housing near the partition groove. By rotating the cover plate, the telescopic component ensures the relay is disconnected when the cover plate is opened for maintenance. Simultaneously, the lifting component rises when the cover plate is opened and falls when the cover plate is closed to prevent dust from falling into the relay. The locking component effectively prevents the blocking assembly from failing due to cover plate shaking during maintenance, thus increasing safety.

[0005] However, electrical equipment generates heat during long-term use, especially equipment that operates under long-term loads. Although relays are now widely used and have comprehensive functions, their dustproof and internal protection features still need further improvement. Summary of the Invention

[0006] The purpose of this invention is to provide a power relay and its protection device to solve the above-mentioned problems. It can effectively dissipate heat from the internal components of the relay equipment by directly replacing hot air with a heat dissipation mechanism. When used with a protective cover, it can further enhance the protection performance of the relay and cool down the connection points of the wires, maintaining a good operating environment for the equipment and further improving the overall dustproof and protection of the relay.

[0007] This invention achieves the above objectives through the following technical solution: a relay, comprising a housing, wherein the housing is provided with a component module for realizing relay function, the component module being an existing combination of components for realizing relay function, capable of basic operations such as contact closure control; both sides of the housing are provided with external contact points connected to the component module, each external contact point is equipped with a bolt; the external contact points need to be connected to the corresponding contact positions of the component module via wires, and correspondingly, one pair of external contact points needs to be connected to an external power source as the power input terminal; both sides of the external contact points are provided with partitions, which can divide the wires and, in this invention, also guide airflow to remove hot air at the external contact points; the bolts on the external contact points are a common power connection method, in use, the wire end is pressed under the bolts; the bolts are usually made of metal; airflow grooves are provided on the side wall of the housing corresponding to the external contact points, the airflow grooves are used to guide airflow and assist the component module in heat dissipation; a heat dissipation mechanism is installed on the housing, the heat dissipation mechanism is used to replace the air inside the housing.

[0008] Furthermore, in order to ensure the smoothness of the shell shape and facilitate the fixing of the heat dissipation mechanism, mounting notches are provided on the upper surface and side walls of the shell. One side of the mounting notches is interconnected, and a heat dissipation port connected to the inside of the shell is provided in the mounting notch. The heat dissipation mechanism is embedded and fixed in the mounting notch.

[0009] Furthermore, in order to dissipate heat from the inside of the housing while preventing external dust from entering, the heat dissipation mechanism includes an L-shaped plate. A cooling fan and a filter port are respectively provided on the two right-angled sidewalls of the L-shaped plate. A filter layer is provided in the filter port. The two right-angled sidewalls of the L-shaped plate are fixed to the housing by screws. Screw holes need to be provided in the mounting notch. Since the protective cover is fastened to the housing, corresponding mounting holes need to be provided in the mounting notch to make the protective cover more stable.

[0010] Furthermore, to facilitate power connection, a first conductive insert is provided at the bottom of the mounting notch on the side wall of the housing. The first conductive insert needs to be connected to the power supply via a wire. The far ends of the right-angled surfaces on both sides of the L-shaped plate are provided with first conductive slots for insertion into the first conductive insert. The first conductive slots enable the smooth transmission of power to the cooling fan, making the assembly of the cooling mechanism more flexible and facilitating the control of the flow direction of the exhaust hot air. Positioning blocks are provided on the side wall of the housing. The positioning blocks are located on both sides of the L-shaped plate. In actual use, multiple relays often need to be arranged. To avoid the lack of space for airflow on the side wall of the housing, the positioning blocks can block one side of the housing. Moreover, the positioning blocks are located on both sides of the L-shaped plate, which can provide a guiding and limiting function when assembling the protective cover.

[0011] A protection device for a relay, based on the relay of claim 4, includes a protective cover covering the housing, and an airflow cavity is provided between the inner wall of the protective cover and the housing to allow airflow, and the airflow cavity is only located above the external contact point. The protective cover covers the housing to protect the component module and the external contact point.

[0012] Furthermore, in order to facilitate the assembly of the heat dissipation mechanism onto the protective cover while maintaining the relative closure of the shell sidewalls, the protective cover has a side mounting opening corresponding to the mounting of the L-shaped plate. The sidewall of the protective cover away from the mounting notch extends directly onto the shell, while the sidewall near the mounting notch needs to be thickened to ensure structural support and stability because it requires additional mounting of the heat dissipation mechanism. A connecting plate is provided between the inner walls of the side mounting openings. The bottom of the sidewall of the connecting plate has an auxiliary shoe block that cooperates with the first conductive insert. The bottom of the auxiliary shoe block has a second conductive slot, and the top of the auxiliary shoe block has a second conductive insert. The connecting plate has threaded mounting holes and auxiliary openings corresponding to the heat dissipation openings. The connecting plate is used to support the installation of the heat dissipation mechanism.

[0013] Furthermore, to facilitate position determination, guide strips are provided on the side wall of the protective cover. The guide strips are located on both sides of the positioning block, and a stabilizing plate is fixed on the guide strip. A portion of the stabilizing plate is fixed to the side wall of the auxiliary shoe block.

[0014] Furthermore, to enhance the stability of the structure, the top of the inner wall of the protective cover is provided with a node plate extending towards the top of the shell. The node plate consists of multiple vertical plates whose bottom ends are attached to the top of the shell, mainly serving as positioning and support. Above the corresponding external contact point, the protective cover has a side platform, and anti-loosening bolts are installed on the side platform corresponding to the external contact point.

[0015] Furthermore, in order to facilitate heat dissipation at the external contact points and enhance the overall heat dissipation effect, the top of the protective shell extends obliquely downward to both sides, and a mixing cavity is left between the bottom of the outer surface and the protective shell. An auxiliary fan is provided on the outer surface.

[0016] Furthermore, to prevent the bolt from loosening during long-term use, the bottom of the anti-loosening bolt extends downward to the top of the bolt, and the bottom of the anti-loosening bolt is provided with an insulating conical part, and the top of the bolt is provided with a corresponding conical groove.

[0017] The technical effects and advantages of this invention are as follows:

[0018] This invention effectively dissipates heat from internal components of relay equipment by directly replacing hot air with a heat dissipation mechanism. The protective cover further enhances the relay's protective performance. During long-term operation, it works in conjunction with auxiliary and cooling fans to cool the relay and the connection points of the wires, maintaining a good operating environment and further improving the overall dustproof and protective capabilities of the relay. Moreover, it can prevent loosening of bolts on external contact points by pressing them with anti-loosening bolts. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the shell structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the mounting notch structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the heat dissipation mechanism of the present invention;

[0024] Figure 5 This is a schematic diagram of the protective cover structure of the present invention;

[0025] Figure 6 This is a bottom view of the protective cover structure of the present invention;

[0026] Figure 7 This is a schematic cross-sectional view of the housing structure of the present invention;

[0027] Figure 8This is a schematic cross-sectional view of the housing of the present invention from another direction;

[0028] Figure 9 This is a schematic diagram showing the relative structures of the anti-loosening bolt and the bolt component of the present invention;

[0029] In the diagram: 1. Shell; 101. Bolt; 102. Partition; 103. Airflow channel; 104. Heat dissipation port; 105. First conductive insert; 106. Positioning block; 107. First conductive slot; 2. Heat dissipation mechanism; 201. L-shaped plate; 202. Cooling fan; 203. Filter port; 3. Protective cover; 301. Connecting plate; 302. Auxiliary shoe block; 303. Second conductive slot; 304. Second conductive insert; 305. Auxiliary port; 306. Guide bar; 307. Stabilizing plate; 308. Node plate; 309. Auxiliary fan; 4. Anti-loosening bolt; 401. Conical part. Detailed Implementation

[0030] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0031] The following detailed description is exemplary and intended to provide further detailed explanation of the invention. Unless otherwise specified, all technical terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention.

[0032] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. It should be noted in the description of this invention that, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] Please see Figures 1-9 As shown.

[0035] Example 1

[0036] A relay includes a housing 1. The housing 1 is provided with a component module that realizes the relay function. The component module is an existing combination of components that realize the relay function and can realize basic operations such as contact closure control. Both sides of the housing 1 are provided with external contact points connected to the component module. Each external contact point is equipped with a bolt 101. The external contact points need to be connected to the corresponding contact positions of the component module through wires. Correspondingly, one pair of external contact points needs to be connected to an external power source as the power input terminal. Both sides of the external contact points are provided with partitions 102. The partitions 102 can divide the wires and, in this invention, also guide the airflow to remove the hot air at the external contact points. The bolts 101 on the external contact points are a common power connection method. In use, the wire end is pressed under the bolt 101. The bolt 101 is usually made of metal. Airflow grooves 103 are opened on the side wall of the housing 1 corresponding to the external contact points. The airflow grooves 103 are used to guide airflow and assist the component module in heat dissipation. A heat dissipation mechanism 2 is installed on the housing 1 to replace the air inside the housing 1.

[0037] Mounting notches are provided on the upper surface and side walls of the housing 1. One side of the mounting notches is interconnected. A heat dissipation vent 104 connected to the inside of the housing 1 is provided in the mounting notch. The heat dissipation mechanism 2 is embedded and fixed in the mounting notch. This ensures the smoothness of the shape of the housing 1 and facilitates the fixing of the position of the heat dissipation mechanism 2. The heat dissipation mechanism 2 includes an L-shaped plate 201. A cooling fan and a filter port 203 are respectively provided on the two right-angled side walls of the L-shaped plate 201. A filter layer is provided in the filter port 203. The two right-angled side walls of the L-shaped plate 201 are fixed to the housing 1 by screws. Screw holes need to be provided in the mounting notch. Since the protective cover 3 is fastened to the housing 1, corresponding mounting holes need to be provided in the mounting notch to make the protective cover 3 more stable. This can dissipate heat from the inside of the housing 1 while preventing external dust from entering the housing 1.

[0038] A first conductive insert 105 is provided at the bottom of the mounting notch on the side wall of the housing 1. The first conductive insert 105 needs to be connected to the power supply through a wire. The far ends of the right angle surfaces on both sides of the L-shaped plate 201 are provided with first conductive slots 107 for insertion into the first conductive insert 105. The first conductive slots 107 can smoothly transmit power to the cooling fan, making the assembly of the heat dissipation mechanism 2 more flexible and facilitating the control of the flow direction of the exhaust hot air. A positioning block 106 is provided on the side wall of the housing 1. The positioning block 106 is located on both sides of the L-shaped plate 201. In actual use, multiple relays often need to be arranged. In order to avoid the lack of space for airflow on the side wall of the housing 1, the positioning block 106 can block one side of the housing 1. Moreover, the positioning block 106 is located on both sides of the L-shaped plate 201, which can provide a guiding and limiting function when assembling the protective cover 3, thus facilitating the connection and use of power.

[0039] In use, an external power source can be connected to the external contact point, and power is transmitted to the first conductive plug 105 through a wire. When the heat dissipation mechanism 2 needs to be installed, the first conductive slot 107 on the L-shaped plate 201 and the first conductive plug 105 are connected and installed. At this time, the L-shaped plate 201 can fit against the housing 1, that is, it is embedded in the installation notch. At this time, the cooling fan can operate and replace the air in the housing 1 by suction or air delivery. Both the cooling fan and the auxiliary fan 309 of this invention need to be equipped with filters to prevent dust from passing through directly. Since the L-shaped plate 201 has first conductive slots 107 at both ends, the position of the cooling fan can be changed during actual installation, so as to assemble and use more flexibly. For example, in actual installation and use, if the space on one side of the housing 1 is small or there are other devices, it is not advisable to exhaust in this direction.

[0040] A relay protection device, based on a relay, includes a protective cover 3 covering a housing 1. An airflow cavity is provided between the inner wall of the protective cover 3 and the housing 1, allowing airflow to pass through. This airflow cavity is only located above the external contact point. The protective cover 3 covers the housing 1 to protect the component module and the external contact point. The protective cover 3 has a side mounting opening for mounting an L-shaped plate 201. The side wall of the protective cover 3 away from the mounting opening extends directly onto the housing 1. The side wall near the mounting opening needs to accommodate a heat dissipation mechanism 2; therefore, it needs to be thickened to ensure structural support and stability. (See reference for details.) Figure 6 and Figure 7 A connecting plate 301 is provided between the inner walls of the side mounting port. The bottom of the side wall of the connecting plate 301 is provided with an auxiliary shoe block 302 that cooperates with the first conductive insert 105. The bottom of the auxiliary shoe block 302 is provided with a second conductive slot 303, and the top of the auxiliary shoe block 302 is provided with a second conductive insert 304. The connecting plate 301 is provided with a threaded mounting hole and an auxiliary port 305 corresponding to the heat dissipation port 104. The connecting plate 301 is used to support the installation of the heat dissipation mechanism 2. This allows the heat dissipation mechanism 2 to be easily assembled onto the protective cover 3 while maintaining the relative closure of the side wall of the housing 1. In this invention, the power source of the electrical appliances on the protective cover 3 is obtained through the first conductive insert 105, thus avoiding additional wiring operations. At the same time, the heat dissipation mechanism 2 installed on the housing 1 can be directly used. The heat dissipation mechanism 2 can be removed and combined with the protective cover 3, which can better utilize component resources. After covering the protective cover 3, the removed heat dissipation mechanism 2 can expose the heat dissipation port 104, thereby facilitating gas flow.

[0041] The protective cover 3 has guide strips 306 on its side wall. The guide strips 306 are located on both sides of the positioning block 106. A stabilizing plate 307 is fixed on the guide strips 306. A part of the stabilizing plate 307 is fixed to the side wall of the auxiliary shoe block 302, which makes it easier to determine the position.

[0042] The inner wall of the protective cover 3 has a node plate 308 extending towards the top of the shell 1. The node plate 308 consists of multiple vertical plates with their bottom ends attached to the top of the shell 1. There are gaps between the node plates 308 to allow airflow, which mainly serve as positioning and support. The protective cover 3 has a side platform above the corresponding external contact point. Anti-loosening bolts 4 are installed on the side platform corresponding to the external contact point, which can enhance the stability of the structure. The bottom of the anti-loosening bolt 4 extends downward to the bolt 101. The bottom of the anti-loosening bolt 4 has an insulated conical part 401. The top of the bolt 101 has a corresponding conical groove. This can prevent the bolt 101 from loosening during long-term use. When it is necessary to anti-loosen the bolt 101, the conical part 401 is pressed into the conical groove by tightening the anti-loosening bolt 4, so that a continuous mutual pressure is formed between the conical part 401 and the bolt 101, thereby preventing the bolt 101 from loosening.

[0043] The top of the protective housing 1 extends downwards and outwards to both sides. A mixing chamber is left between the bottom of the outwards and the protective housing 1. An auxiliary fan 309 is provided on the outwards, which facilitates heat dissipation at the external contact points and enhances the overall heat dissipation effect. In use, the auxiliary fan 309 can introduce external airflow, which flows along the housing 1 after stabilizing in the mixing chamber, and then flows over the external contact points, carrying away heat during the flow.

[0044] When the protective cover 3 needs to be installed on the housing 1, first tighten the fasteners on each external contact point, and then fasten the protective cover 3 onto the housing 1 so that the second conductive slot 303 is inserted into the first conductive insert 105. At this time, the heat dissipation mechanism 2 can be installed on the connecting plate 301 by screws. At this time, the heat dissipation mechanism 2 completely covers the side mounting port. Then, it is fixed by screws of sufficient length passing through the heat dissipation mechanism 2 and the top of the housing 1. If further stability is required, an edge plate that can support the L-shaped plate 201 can be provided on the inner wall of the side mounting port. At this time, the heat dissipation fan on the heat dissipation mechanism 2 can obtain power through the second conductive insert 304. Preferably, during heat dissipation, the airflow is drawn in from one side and enters the housing 1 through the filter port 203, the auxiliary port 305 and the heat dissipation port 104. Moreover, in this embodiment, the heat dissipation fan and the auxiliary fan 309 can be triggered by setting temperature detectors inside the housing 1 and at the external contact points.

[0045] This invention can effectively dissipate heat from the internal components of relay equipment. The heat dissipation mechanism 2 directly replaces hot air, and the protective cover 3 can further enhance the protection performance of the relay. When the relay is in long-term operation, it can work with the auxiliary fan 309 and the cooling fan to cool down the relay and the connection points of the wires connected to the wires, maintain a good operating environment for the equipment, and further improve the overall dustproof and protective capabilities of the relay.

[0046] Example 2

[0047] This embodiment provides another implementation method for airflow planning based on Embodiment 1. A relay includes a housing 1, which is equipped with a component module for implementing relay functions. The component module is a combination of existing relay components capable of basic operations such as contact closure control. Both sides of the housing 1 have external contact points connected to the component module. Each external contact point is equipped with a bolt 101. The external contact points need to be connected to the corresponding contact points of the component module via wires. Correspondingly, one pair of external contact points needs to be connected to an external power source as the power input terminal. Both sides are provided with partitions 102, which can divide the wires. In this invention, they are also used to guide airflow and remove the hot air at the external contact point. The bolt 101 on the external contact point is a common power connection method. When in use, the wire end is pressed under the bolt 101. The bolt 101 is usually made of metal. An airflow groove 103 is provided on the side wall of the housing 1 corresponding to the external contact point. The airflow groove 103 is used to guide airflow and to help the auxiliary component module dissipate heat. A heat dissipation mechanism 2 is installed on the housing 1. The heat dissipation mechanism 2 is used to replace the air inside the housing 1.

[0048] Mounting notches are provided on the upper surface and side walls of the housing 1. One side of each mounting notch is interconnected. A heat dissipation vent 104, communicating with the interior of the housing 1, is provided within each mounting notch. The heat dissipation mechanism 2 is embedded and fixed within the mounting notch. This ensures the smoothness of the housing 1's shape and facilitates the fixing of the heat dissipation mechanism 2. The heat dissipation mechanism 2 includes an L-shaped plate 201. A cooling fan and a filter vent 203 are respectively provided on the two right-angled side walls of the L-shaped plate 201. A filter layer is provided within the filter vent 203. Both right-angled side walls of the L-shaped plate 201 are fixed to the housing 1 with screws. Corresponding screw holes are provided within the mounting notches. Since the protective cover 3 is fastened to the housing 1, corresponding mounting holes are provided within the mounting notches to ensure the protective cover 3's stability. This allows for heat dissipation from the interior of the housing 1 while preventing external dust from entering the housing 1. The mounting notches are located on the side walls of the housing 1. The bottom of the opening is provided with a first conductive insert 105. The first conductive insert 105 needs to be connected to the power supply through a wire. The far ends of the right angle surfaces on both sides of the L-shaped plate 201 are provided with first conductive slots 107 for insertion with the first conductive insert 105. The setting of the first conductive slots 107 can smoothly transmit power to the cooling fan, making the assembly of the heat dissipation mechanism 2 more flexible and convenient to control the flow direction of the exhaust hot air. The side wall of the housing 1 is provided with positioning blocks 106. The positioning blocks 106 are located on both sides of the L-shaped plate 201. In actual use, multiple relays often need to be arranged. In order to avoid the lack of space for airflow on the side wall of the housing 1, the positioning blocks 106 can block one side of the housing 1. Moreover, the positioning blocks 106 are located on both sides of the L-shaped plate 201, which can provide a guiding and limiting function when assembling the protective cover 3, thus facilitating the connection and use of power.

[0049] The relay protection device, based on the relay, includes a protective cover 3 that covers the housing 1. An airflow cavity is provided between the inner wall of the protective cover 3 and the housing 1 to allow airflow. This airflow cavity is only located above the external contact point. The protective cover 3 covers the housing 1 to protect the component module and the external contact point. The protective cover 3 has a side mounting opening for mounting an L-shaped plate 201. The side wall of the protective cover 3 away from the mounting opening extends directly onto the housing 1. The side wall near the mounting opening needs to accommodate a heat dissipation mechanism 2; therefore, it needs to be thickened to ensure structural support and stability. (See reference for details.) Figure 6 and Figure 7A connecting plate 301 is provided between the inner walls of the side mounting port. The bottom of the side wall of the connecting plate 301 is provided with an auxiliary shoe block 302 that cooperates with the first conductive insert 105. The bottom of the auxiliary shoe block 302 is provided with a second conductive slot 303, and the top of the auxiliary shoe block 302 is provided with a second conductive insert 304. The connecting plate 301 is provided with a threaded mounting hole and an auxiliary port 305 corresponding to the heat dissipation port 104. The connecting plate 301 is used to support the installation of the heat dissipation mechanism 2. This allows the heat dissipation mechanism 2 to be easily assembled onto the protective cover 3 while maintaining the relative closure of the side wall of the housing 1. In this invention, the power source of the electrical appliances on the protective cover 3 is obtained through the first conductive insert 105, thus avoiding additional wiring operations. At the same time, the heat dissipation mechanism 2 installed on the housing 1 can be directly used. The heat dissipation mechanism 2 can be removed and combined with the protective cover 3, which can better utilize component resources. After covering the protective cover 3, the removed heat dissipation mechanism 2 can expose the heat dissipation port 104, thereby facilitating gas flow.

[0050] The protective cover 3 has guide strips 306 on its side wall. The guide strips 306 are located on both sides of the positioning block 106. A stabilizing plate 307 is fixed on the guide strips 306. A part of the stabilizing plate 307 is fixed to the side wall of the auxiliary shoe block 302, which makes it easier to determine the position.

[0051] The inner wall of the protective cover 3 has a node plate 308 extending towards the top of the housing 1. The node plate 308 consists of multiple vertical plates whose bottom ends are attached to the top of the housing 1, filling the space between the top of the housing 1 and the protective cover 3. Its main function is positioning and support, while also isolating it from communication with the spaces on both sides. Above the corresponding external contact point, the protective cover 3 has a side platform. Anti-loosening bolts 4 are installed on the side platform corresponding to the external contact point, thus enhancing structural stability. The bottom of the anti-loosening bolt 4 extends downwards to above the bolt member 101. The bottom of the anti-loosening bolt 4 has an insulated conical part 401, and the top of the bolt member 101 has a corresponding conical groove. This prevents the bolt member 101 from loosening during long-term use. To prevent loosening of bolt 101, the anti-loosening bolt 4 is tightened to press the conical part 401 into the conical groove, creating a continuous mutual pressure between the conical part 401 and the bolt 101, thus preventing the bolt 101 from loosening. The top of the protective shell 1 extends downwards and outwards to both sides, with a mixing chamber between the bottom of the outwards and the protective shell 1. An auxiliary fan 309 is provided on the outwards, which facilitates heat dissipation at the external contact points and enhances the overall heat dissipation effect. In use, the auxiliary fan 309 can introduce external airflow, which flows along the shell 1 after stabilizing in the mixing chamber, and then flows over the external contact points, carrying away heat during the flow.

[0052] In this embodiment, the node plate 308 is an integral strip plate, which makes the top of the housing 1 a separate cavity. When the heat dissipation mechanism 2 replaces the gas, it still only replaces the airflow inside the housing 1, while the heat at the external contact point is handled by the auxiliary fans 309 on both sides. In this way, heat dissipation can be triggered at different locations when needed, making it more flexible to use.

[0053] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0054] As is known from common technical knowledge, this invention can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones. All modifications within the scope of this invention or its equivalents are included in this invention.

Claims

1. A relay, characterized in that, Includes a housing (1), the housing (1) is provided with a component module that realizes the relay function, both sides of the housing (1) are provided with external contact points connected to the component module, each external contact point is equipped with a bolt (101), both sides of the external contact point are provided with a partition (102), the side wall of the housing (1) corresponding to the external contact point is provided with an airflow groove (103), and the housing (1) is equipped with a heat dissipation mechanism (2). The upper surface and side wall of the housing (1) are provided with mounting notches, one side of the mounting notches is connected to each other, and a heat dissipation port (104) connected to the inside of the housing (1) is provided in the mounting notch. The heat dissipation mechanism (2) is embedded and fixed in the mounting notch. The heat dissipation mechanism (2) includes an L-shaped plate (201). A heat dissipation fan and a filter port (203) are respectively provided on the right-angled sidewalls of the L-shaped plate (201). A filter layer is provided inside the filter port (203). The right-angled sidewalls of the L-shaped plate (201) are fixed by screws and the housing (1). A first conductive insert (105) is provided at the bottom of the mounting notch on the side wall of the housing (1). The far ends of the right angle surfaces on both sides of the L-shaped plate (201) are provided with a first conductive slot (107) for insertion with the first conductive insert (105). A positioning block (106) is provided on the side wall of the housing (1). The positioning block (106) is located on both sides of the L-shaped plate (201). It also includes a protective device, which includes a protective cover (3) covering the top of the housing (1), and an airflow cavity is left between the inner wall of the protective cover (3) and the housing (1) to allow airflow to pass through, and the airflow cavity is only located above the outer contact point; The protective cover (3) has a side mounting opening for mounting the L-shaped plate (201). A connecting plate (301) is provided between the inner walls of the side mounting opening. An auxiliary shoe block (302) is provided at the bottom of the side wall of the connecting plate (301) to cooperate with the first conductive insert (105). A second conductive slot (303) is provided at the bottom of the auxiliary shoe block (302). A second conductive insert (304) is provided at the top of the auxiliary shoe block (302). The connecting plate (301) has a threaded mounting hole and an auxiliary opening (305) corresponding to the heat dissipation port (104). The protective cover (3) has a guide strip (306) on its side wall. The guide strip (306) is located on both sides of the positioning block (106). A stabilizing plate (307) is fixed on the guide strip (306). A part of the stabilizing plate (307) is fixed to the side wall of the auxiliary shoe block (302). The top of the inner wall of the protective cover (3) is provided with a node plate (308) extending to the top of the shell (1). The protective cover (3) has a side platform above the corresponding external contact point, and anti-loosening bolts (4) are installed on the side platform corresponding to the external contact point. The bottom of the anti-loosening bolt (4) extends downward to the top of the bolt (101). The bottom of the anti-loosening bolt (4) is provided with an insulating conical part (401), and the top of the bolt (101) is provided with a corresponding conical groove.

2. The relay according to claim 1, characterized in that, The top of the protective shell (1) extends downwards to both sides, and a mixing cavity is left between the bottom of the outer surface and the protective shell (1). An auxiliary fan (309) is provided on the outer surface.

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