Explosion-proof box and electrical equipment

Abstract

The utility model discloses an explosion-proof box and electrical equipment, and relates to the technical field of explosion-proof boxes, the explosion-proof box comprises a cabinet, and the cabinet comprises a box body and a cover body covering an upper opening of the box body; and the connecting assembly comprises at least two connecting components used for connecting the box body and the cover body, and reinforcing pieces are arranged on part of the connecting components. According to the explosion-proof box provided by the invention, the connection strength at the position where the connecting component without the reinforcing part is located is relatively low, direct pressure relief is facilitated to form the pressure relief area, the reinforcing part is arranged on the connecting component to increase the connection strength of the box body and the cover body at the position, the cover body can be prevented from being separated from the box body, and the reliability of the electrical equipment is improved.

Description

Technical Field

[0001] This application relates to the field of explosion-proof enclosure technology, and more specifically, to an explosion-proof enclosure and electrical equipment. Background Technology

[0002] Electrical equipment includes a enclosure, a cover, and electronic components inside the enclosure. The enclosure and cover are usually connected and fixed by a combination of press-fit parts and fasteners. However, under special circumstances, electrical equipment is prone to internal explosions, which can cause the cover to detach from the enclosure, resulting in property damage and personal injury.

[0003] Therefore, how to improve the reliability of electrical equipment has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of this application is to provide an explosion-proof enclosure to improve the reliability of electrical equipment.

[0005] Another object of this application is to provide an electrical device having the above-mentioned explosion-proof box.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] An explosion-proof box, comprising:

[0008] A chassis, the chassis including a housing and a cover having an opening on the housing;

[0009] A connecting assembly includes at least two connecting members for connecting the housing and the cover, and a reinforcing member is provided on some of the connecting members, the reinforcing member being pulled or pressed onto the housing by the connecting members.

[0010] Optionally, in the above-mentioned explosion-proof box, the connecting member includes an mounting member disposed on the box body and a fastener that cooperates with the mounting member and is disposed on the cover body, and the reinforcing member is fixed to one side of the box body by the mounting member.

[0011] Optionally, in the above-mentioned explosion-proof box, the box body is provided with a first mounting hole, and the cover body is provided with a second mounting hole corresponding to the first mounting hole;

[0012] The mounting component includes an insertion section and a mounting section. The insertion section extends into the first mounting hole, and the mounting section directly or indirectly abuts against the edge of the first mounting hole.

[0013] Optionally, in the above-mentioned explosion-proof box, the first mounting hole is provided with a limiting part in the circumferential direction, and the insertion section of the mounting member cooperates with the limiting part to restrict the rotation of the mounting member.

[0014] Optionally, in the above-mentioned explosion-proof box, the reinforcing member is provided with a connecting hole sleeved on the outside of the insertion section, and the reinforcing member is located between the mounting section and the eaves of the first mounting hole, so that the mounting section and the eaves of the first mounting hole are indirectly abutted.

[0015] Optionally, in the above-mentioned explosion-proof box, the reinforcing member and the mounting member are an integral structure, and the reinforcing member is disposed at the end of the mounting section away from the first mounting hole, and the mounting section directly abuts against the edge of the first mounting hole.

[0016] Optionally, in the explosion-proof box described above, one or more buffer members are provided on the mounting section, and the buffer members are located between the reinforcing member and the eaves of the first mounting hole.

[0017] Optionally, in the above-mentioned explosion-proof box, the outer ring of the mounting section is provided with a first protrusion, and the first protrusion directly or indirectly abuts against the edge of the first mounting hole.

[0018] Optionally, in the above-mentioned explosion-proof box, the outer ring of the insertion section is provided with a second protrusion, the rim of the first mounting hole is located between the first protrusion and the second protrusion, and the second protrusion abuts against the rim of the first mounting hole.

[0019] Optionally, in the above-mentioned explosion-proof box, the outer diameter of the first protrusion is larger than the outer diameter of the mounting section, and the outer diameter of the second protrusion is not smaller than the inner diameter of the first mounting hole.

[0020] Optionally, in the above-mentioned explosion-proof enclosure, there are multiple connecting components, and each connecting component is arranged along the circumference of the enclosure.

[0021] An electrical device comprising an explosion-proof enclosure as described in any of the preceding claims and electronic components located within the explosion-proof enclosure.

[0022] The explosion-proof enclosure provided in this application connects the enclosure body and the cover body through at least two connecting members. Reinforcing members are provided on some of these connecting members to increase the connection strength between the enclosure body and the cover body at those locations. The connection strength is weaker at locations where no reinforcing members are provided. In the event of an explosion, the locations of the connecting members without reinforcing members facilitate direct pressure relief, creating a pressure relief zone. Due to the pressure difference at each connection point between the enclosure body and the cover body, the cover body in the pressure relief zone is prone to deformation, creating a gap between it and the enclosure body, thus directly releasing the explosion pressure. Simultaneously, the reinforcing members on some connecting members prevent the cover body from separating from the enclosure body, thereby avoiding property damage and personal injury caused by cover detachment and improving the reliability of the electrical equipment. Furthermore, the reinforcing members can be pulled or pressed onto the enclosure body through the connecting members, eliminating the need to first rivet the fastening nuts to the reinforcing members and then fix them in place with screws or pins. This reduces the installation steps for the reinforcing members, simplifying the installation process.

[0023] The technical features mentioned above, those to be mentioned below, and those shown individually in the accompanying drawings can be combined arbitrarily, provided that the combined technical features are not contradictory. All feasible combinations of features are the technical content explicitly described herein. Any one of the multiple sub-features contained in the same statement can be applied independently, without necessarily being applied together with other sub-features. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0025] Figure 1 Schematic diagram of the explosion-proof box provided in the embodiments of this application Figure 1 ;

[0026] Figure 2 Schematic diagram of the explosion-proof box provided in the embodiments of this application Figure 2 ;

[0027] Figure 3 A schematic diagram of the connecting member provided in Embodiment 1 of this application Figure 1 ;

[0028] Figure 4 A schematic diagram of the connecting member provided in Embodiment 1 of this application Figure 2 ;

[0029] Figure 5A schematic diagram of the connecting member provided in Embodiment 1 of this application Figure 3 ;

[0030] Figure 6 A schematic diagram of the connecting member provided in Embodiment 1 of this application Figure 4 ;

[0031] Figure 7 Schematic diagram of the connecting member provided in Embodiment 2 of this application Figure 1 ;

[0032] Figure 8 Schematic diagram of the connecting member provided in Embodiment 2 of this application Figure 2 ;

[0033] Figure 9 Schematic diagram of the connecting member provided in Embodiment 2 of this application Figure 3 ;

[0034] Figure 10 Schematic diagram of the connecting member provided in Embodiment 2 of this application Figure 4 ;

[0035] Figure 11 This is a schematic diagram of the structure of the buffer provided in Embodiment 1 of this application;

[0036] Figure 12 This is a schematic diagram of the structure of the buffer provided in Embodiment 2 of this application;

[0037] Figure 13 This is a schematic diagram of the structure of the buffer provided in Embodiment 3 of this application;

[0038] Figure 14 This is a schematic diagram of the structure of the mounting component and the first mounting hole provided in the embodiments of this application;

[0039] Figure 15 This is a schematic diagram of the structure of the first mounting hole provided in an embodiment of this application.

[0040] Wherein, 100 is the chassis, 101 is the enclosure, 1011 is the first mounting hole, 1012 is the hole rim, 1013 is the limiting part, 102 is the cover, and 1021 is the second mounting hole;

[0041] 200 is a connecting component, 201 is a connecting member, 2011 is a mounting part, 2012 is a fastener, 2013 is a sleeve, 2014 is a first protrusion, 2015 is an insertion section, 2016 is a mounting section, 2017 is a second protrusion, 202 is a reinforcing member, 2021 is a connecting hole, 203 is a buffer member, and 2031 is a weakening hole. Detailed Implementation

[0042] The core of this application is to provide an explosion-proof enclosure to improve the reliability of electrical equipment.

[0043] Another key aspect of this application is to provide an electrical device having the aforementioned explosion-proof enclosure.

[0044] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0045] Electrical equipment includes enclosures, covers, and electronic components inside the enclosures. When these components malfunction or short-circuit, they can damage the internal electronic components, leading to risks such as fires or even explosions. The power of an explosion increases with the power rating of the equipment. The pressure generated by the explosion can exert a huge impact force on the cover, causing it to fly off and posing a significant safety hazard to other equipment and personnel.

[0046] Traditional enclosures and covers are typically connected and secured using nuts and fasteners. To prevent the connection between the enclosure and cover from failing due to the explosion of electronic components inside the enclosure, reinforcements are usually installed at the connection point. However, this process requires first riveting the nuts to the reinforcements to form a single unit, then positioning and fixing the reinforcements to one side of the enclosure using screws or pins, and finally connecting the cover to the nuts on the reinforcements using fasteners. This makes the installation process complex and inefficient.

[0047] Therefore, such as Figure 1 As shown in the figure, this application discloses an explosion-proof enclosure, including a chassis 100 and a connecting assembly 200. By addressing the weak connection strength at the location of the connecting assembly 201 without a reinforcing member 202, direct pressure relief is facilitated to form a pressure relief area. By providing a reinforcing member 202 on the connecting assembly 201, the connection strength between the enclosure 101 and the cover 102 at that location is increased, preventing the cover 102 from separating from the enclosure 101 and improving the reliability of the electrical equipment. Furthermore, the reinforcing member 202 can be pulled or pressed onto the enclosure 101 via the connecting assembly 201, simplifying the installation process of the reinforcing member 202.

[0048] The following will combine Figures 1 to 15 The explosion-proof box disclosed in the embodiments of this application will be explained and described in detail.

[0049] like Figure 1 and Figure 2As shown, the chassis 100 includes a housing 101 and a cover 102 covering the opening of the housing 101. The housing 101 has an edge along its circumference on the opening side. When the cover 102 is placed over the opening side of the housing 101, the edge of the opening side of the housing 101 is connected and fixed to the cover 102 by a connecting assembly 200. A sealing strip is provided at the connection point between the housing 101 and the cover 102 to achieve a sealing effect for the chassis 100, preventing water stains, dust, and other impurities from entering the housing 101 and contaminating the electronic components inside, thus causing damage to the electronic components.

[0050] like Figure 2 As shown, the connecting assembly 200 includes at least two connecting members 201 that connect the housing 101 and the cover 102. The housing 101 and the cover 102 are connected by the connecting members 201. Some of the connecting members 201 are provided with reinforcing members 202 to increase the connection strength between the housing 101 and the cover 102 at that location, thereby forming a reinforced area. Other connecting members 201 are not provided with reinforcing members 202, so that the connection strength at the location of the connecting member 201 without reinforcing members 202 is smaller. When the electronic components inside the enclosure 101 fail, causing an explosion inside the enclosure 101, the connection at the location of the connecting member 201 without reinforcement 202 fails, thus facilitating direct pressure relief to form a pressure relief zone. Furthermore, due to the pressure difference at various connection points between the enclosure 101 and the cover 102, the cover 102 in the pressure relief zone is prone to deformation and a gap is created between it and the enclosure 101, thereby directly releasing the explosion pressure. At the same time, since some connecting members 201 are equipped with reinforcement 202, the cover 102 is prevented from separating from the enclosure 101, reducing the risk of separation between the cover 102 and the enclosure 101 and improving the reliability of the electrical equipment.

[0051] Furthermore, the reinforcing member 202 can be pulled or pressed onto the housing 101 via the connecting member 201, eliminating the need to rivet the fastening nut to the reinforcing member and then fix it with screws or pins, thus simplifying the installation process of the reinforcing member 202. Specifically, the connecting member 201 can be pulled onto the housing 101 via riveting, and the reinforcing member 202 can be located between the connecting member 201 and the housing 101. Thus, the reinforcing member 202 can be fixed to the housing 101 by riveting the connecting member 201, eliminating the need to first rivet the fastening nut to the reinforcing member and then fix it with screws or pins, simplifying the installation process of the reinforcing member 202. Alternatively, the reinforcing member 202 and the connecting member 201 can be an integral structure, and the reinforcing member 202 can be fixed to the housing 101 by riveting the connecting member 201. Of course, the connecting member 201 can also be crimped onto the housing 101 by riveting. Simultaneously, the reinforcing member 202 can be located between the connecting member 201 and the housing 101. Thus, the reinforcing member 202 can be fixed to the housing 101 by crimping the connecting member 201 to the housing 101, eliminating the need to first crimp the fastening nut to the reinforcing member and then fix the reinforcing member 202 with screws or pins, simplifying the installation process. Alternatively, the reinforcing member 202 and the connecting member 201 can be an integral structure, and the reinforcing member 202 can be fixed to the housing 101 by crimping the connecting member 201 to the housing 101.

[0052] In some embodiments, the connecting members 201 may be two, but not limited to, or more, such as three, four, five, or more, and each connecting member 201 is arranged circumferentially on the edge of the housing 101. Furthermore, the connecting members 201 with reinforcing members 202 may be one, but not limited to, or two, three, four, or more, as long as there is a strength difference at the connection point between the housing 101 and the cover 102. That is, there may be connecting members 201 without reinforcing members 202, which would cause failure and create a pressure relief area during an explosion, while a reinforced area would be formed at the location of the connecting members 201 with reinforcing members 202. This effectively reduces the risk of separation between the cover 102 and the housing 101, and improves the reliability of the electrical equipment.

[0053] like Figures 3 to 10 As shown, the connecting member 201 includes a mounting member 2011 disposed on the housing 101 and a fastener 2012 that cooperates with the mounting member 2011 and is disposed on the cover 102. The reinforcing member 202 is fixed to one side of the housing 101 by the mounting member 2011.

[0054] like Figures 3 to 10As shown, a first mounting hole 1011 is provided on the edge of the housing 101, and a second mounting hole 1021 corresponding to the first mounting hole 1011 is provided on the cover 102. Furthermore, the mounting component 2011 includes a sleeve 2013, which consists of an insertion section 2015 extending into the first mounting hole 1011 and a mounting section 2016 that directly or indirectly abuts against the edge 1012 of the first mounting hole 1011.

[0055] In some embodiments, a limiting portion 1013 is provided in the circumferential direction of the first mounting hole 1011, and the insertion section 2015 of the mounting member 2011 extends into the first mounting hole 1011. The rotation of the mounting member 2011 can be limited by the cooperation between the insertion section 2015 of the mounting member 2011 and the limiting portion 1013. For example, Figure 14 As shown, the limiting part 1013 can be a protrusion provided on the inner wall of the first mounting hole 1011, and one or more protrusions can be used. Simultaneously, the insertion section 2015 of the mounting member 2011 can be provided with a groove adapted to the protrusion. Thus, the rotation of the mounting member 2011 can be restricted by the engagement between the protrusion on the inner wall of the first mounting hole 1011 and the groove on the insertion section 2015 of the mounting member 2011, facilitating the pulling or pressing of the mounting member 2011 onto the housing 101. Alternatively, the limiting part 1013 can also be a groove provided on the inner wall of the first mounting hole 1011, and one or more grooves can be used. Simultaneously, the insertion section 2015 of the mounting member 2011 can be provided with a protrusion adapted to the groove. Thus, the rotation of the mounting member 2011 can be restricted by the engagement between the groove on the inner wall of the first mounting hole 1011 and the protrusion on the insertion section 2015 of the mounting member 2011.

[0056] In some embodiments, such as Figure 15 As shown, the first mounting hole 1011 can be a polygonal hole, such as a hexagonal hole. Simultaneously, the insertion section 2015 of the mounting member 2011 can have a hexagonal cross-section matching the first mounting hole 1011. This allows multiple angled sidewalls within the first mounting hole 1011 to engage with the insertion section 2015 of the mounting member 2011, restricting the rotation of the mounting member 2011 and facilitating its connection to the housing 101. Alternatively, the first mounting hole 1011 can also be a triangular hole, a square hole, a pentagonal hole, etc., and the insertion section 2015 of the mounting member 2011 can have a polygonal cross-section matching the first mounting hole 1011. This allows multiple angled sidewalls within the first mounting hole 1011 to engage with the insertion section 2015 of the mounting member 2011, restricting the rotation of the mounting member 2011 and facilitating its connection to the housing 101.

[0057] In some embodiments, such as Figure 3As shown, when the insertion section 2015 of the mounting component 2011 is inserted into the first mounting hole 1011 on the edge of the housing 101, and the mounting section 2016 of the mounting component 2011 directly abuts against the edge 1012 of the first mounting hole 1011, the fastener 2012 can pass through the edge of the cover 102 and the housing 101. Through the threaded engagement between the mounting component 2011 and the fastener 2012, the connecting component 201 is installed and fixed, so as to form a pressure relief area at this position.

[0058] In some embodiments, such as Figure 4 As shown, the reinforcing member 202 can be an integral structure with the mounting section 2016 of the mounting member 2011, and the reinforcing member 202 can be located at one end of the mounting section 2016 near the first mounting hole 1011, so that the reinforcing member 202 abuts against the hole edge 1012 of the first mounting hole 1011, thereby forming a reinforcing area at this position.

[0059] When an explosion occurs inside the enclosure 101 due to damage to the electronic components, the connection at the point where the mounting section 2016 of the mounting member 2011 directly abuts against the edge 1012 of the first mounting hole 1011 fails, causing the cover 102 to separate from the enclosure 101. This creates a pressure relief zone, allowing the explosion pressure to be released directly from this area. In the reinforced area where the reinforcing member 202 is installed, the force at the location of the first mounting hole 1011 is increased but less than the force on the reinforcing member 202, preventing the cover 102 from separating from the enclosure 101. This effectively reduces the risk of the cover flying off and improves the reliability of the electrical equipment.

[0060] In some embodiments, such as Figure 5 As shown, the reinforcing member 202 can be an integral structure with the mounting section 2016 of the mounting member 2011, and the reinforcing member 202 can be located at the end of the mounting section 2016 away from the first mounting hole 1011, so that the mounting section 2016 of the mounting member 2011 directly abuts against the hole edge 1012 of the first mounting hole 1011. At this time, a reinforcing area can be formed at this position, and the explosion pressure can be released at this position. When the electronic components inside the enclosure 101 fail, causing an explosion inside the enclosure 101, the force at the location of the first mounting hole 1011 increases and is greater than the force at the mounting section 2016 of the mounting component 2011, thus achieving primary pressure relief. At the same time, since the mounting section 2016 of the mounting component 2011 has a certain length, secondary pressure relief can be achieved, causing the cover 102 to separate from the enclosure 101 by a certain distance. However, since the force at the location of the first mounting hole 1011 is less than the force at the reinforcing member 202, the cover 102 is limited by the reinforcing member 202 and cannot be further separated from the enclosure 101, thereby effectively reducing the risk of the cover flying off and improving the reliability of the electrical equipment.

[0061] In some embodiments, such as Figure 6 As shown, one or more buffer members 203 can be fitted onto the mounting section 2016 of the mounting member 2011. That is, the number of buffer members 203 can be one, two, three, or more, and the buffer members 203 are located between the reinforcing member 202 and the rim 1012 of the first mounting hole 1011. When the electronic components inside the housing 101 are damaged, causing an explosion inside the housing 101, the buffer members 203 can buffer and absorb energy during the pressure relief process, thereby reducing the impact force generated by the explosion.

[0062] In some embodiments, such as Figure 11 As shown, the buffer 203 can be an elastic buffer such as a spring or rubber pad. The buffer 203 can also be a metal buffer made of metal material, and one or more damping holes 2031 can be formed on the metal buffer; that is, there can be only one damping hole 2031. Figure 12 As shown, there can be two or more, and the shape of the weakening hole 2031 can be rectangular, triangular, circular, etc., which is not limited here. Thus, the strength of the metal buffer can be weakened through one or more weakening holes 2031, so that the metal buffer plays a buffering and energy-absorbing role during pressure relief, thereby reducing the impact force generated by the explosion; or, the thickness of the metal buffer can be reduced, thereby weakening the strength of the metal buffer, so that the metal buffer plays a buffering and energy-absorbing role during pressure relief, thereby reducing the impact force generated by the explosion. Of course, as... Figure 11 and Figure 12 As shown, buffer 203 can be a single component, or as shown in the diagram. Figure 13 The example shown uses two or more, but this article does not limit the number of them.

[0063] In some embodiments, the mounting section 2016 of the reinforcing member 202 and the mounting member 2011 can also be a separate structure, and the reinforcing member 202 has a connecting hole 2021. The mounting member 2011 can be a press-fit nut, thereby pressing the mounting member 2011 onto the housing 101. During installation, the reinforcing member 202 is fitted onto the knurled outer side of the press-fit nut through the connecting hole 2021. A press is used to press the knurled surface of the press-fit nut into the first mounting hole 1011 of the housing 101, thereby fixing the press-fit nut and the reinforcing member 202 together onto the edge of the housing 101. Then, a fastener 2012 is inserted into the second mounting hole 1021 and threadedly connected to the press-fit nut.

[0064] like Figures 7 to 10 As shown, the outer side of the mounting section 2016 may also be provided with a first protrusion 2014, and the first protrusion 2014 directly or indirectly abuts against the edge 1012 of the first mounting hole 1011.

[0065] In some embodiments, such as Figure 7As shown, when the insertion section 2015 of the mounting member 2011 is inserted into the first mounting hole 1011 on the edge of the housing 101, and the first protrusion 2014 of the mounting section 2016 directly abuts against the edge 1012 of the first mounting hole 1011, the fastener 2012 can pass through the edge of the cover 102 and the housing 101. Through the threaded engagement between the mounting member 2011 and the fastener 2012, the connecting member 201 is installed and fixed, so as to form a pressure relief area at this position.

[0066] In some embodiments, such as Figure 8 As shown, the reinforcing member 202 and the mounting section 2016 of the mounting member 2011 can adopt a split structure. The reinforcing member 202 is sleeved on the outside of the mounting section 2016 through the connecting hole 2021, and the reinforcing member 202 is located between the first protrusion 2014 and the hole edge 1012 of the first mounting hole 1011, so that the reinforcing member 202 abuts against the hole edge 1012 of the first mounting hole 1011, thereby forming a reinforcing area at this position.

[0067] When an explosion occurs inside the enclosure 101 due to damage to the electronic components, the connection at the point where the first protrusion 2014 of the mounting section 2016 directly abuts against the edge 1012 of the first mounting hole 1011 fails, causing the cover 102 to separate from the enclosure 101. This creates a pressure relief zone, allowing the explosion pressure to be released directly from this point. In the reinforced area where the reinforcing member 202 is provided, the force at the location of the first mounting hole 1011 is increased but less than the force on the reinforcing member 202, preventing the cover 102 from separating from the enclosure 101. This effectively reduces the risk of the cover flying off and improves the reliability of the electrical equipment.

[0068] In some embodiments, such as Figure 9As shown, the reinforcing member 202 can be an integral structure with the mounting section 2016 of the mounting member 2011, and the reinforcing member 202 can be located at the end of the mounting section 2016 away from the first mounting hole 1011, so that the first protrusion 2014 of the mounting section 2016 directly abuts against the edge 1012 of the first mounting hole 1011. At this time, a reinforcing area can be formed at this position, and the explosion pressure can be released at this position. When the electronic components inside the housing 101 fail, causing an explosion inside the housing 101, the force at the location of the first mounting hole 1011 increases and is greater than the force at the location of the first protrusion 2014 of the mounting section 2016, thus achieving primary pressure relief. At the same time, since the mounting section 2016 of the mounting component 2011 has a certain length, secondary pressure relief can be achieved, causing the cover 102 to separate from the housing 101 by a certain distance. However, since the force at the location of the first mounting hole 1011 is less than the force on the reinforcing member 202, the cover 102 is limited by the reinforcing member 202 and cannot be further separated from the housing 101, thereby effectively reducing the risk of the cover flying off and improving the reliability of the electrical equipment.

[0069] In some embodiments, such as Figure 10 As shown, one or more buffer members 203 may also be fitted on the installation section 2016, and the buffer member 203 may be located between the reinforcing member 202 and the first protrusion 2014. When the electronic components inside the housing 101 are damaged and an explosion occurs inside the housing 101, the buffer member 203 can play a role in buffering and absorbing energy during the depressurization process, thereby reducing the impact force generated by the explosion.

[0070] Among them, such as Figures 11 to 13 As shown, the buffer 203 can be an elastic buffer such as a spring or a rubber pad, or a metal buffer made of metal material. The specific implementation method has been explained and described above, and will not be repeated here.

[0071] like Figures 7 to 10 As shown, a second protrusion 2017 is also provided around the outer side of the insertion section 2015, and the rim 1012 of the first mounting hole 1011 is located between the first protrusion 2014 and the second protrusion 2017. Simultaneously, the second protrusion 2017 abuts against the rim 1012 of the first mounting hole 1011 to ensure the reliability of the connection between the mounting member 2011 and the housing 101. The outer diameter of the first protrusion 2014 is larger than the outer diameter of the mounting section 2016, so that the first protrusion 2014 can directly or indirectly abut against the rim 1012 of the first mounting hole 1011, thereby increasing the force-bearing area between the mounting member 2011 and the housing 101, allowing the connecting member 201 to resist greater explosive impact. Furthermore, the outer diameter of the second protrusion 2017 is not smaller than the inner diameter of the first mounting hole 1011 to prevent the mounting member 2011 from detaching from the first mounting hole 1011 of the housing 101.

[0072] In some embodiments, the mounting component 2011 may be a rivet nut, which can be pulled onto the housing 101. During installation, the insertion end of the rivet nut is inserted through the first mounting hole 1011, so that the second protrusion 2017 of the rivet nut is in contact with the first mating surface of the hole edge 1012 of the first mounting hole 1011. At the same time, the reinforcing member 202 is sleeved on the insertion end of the rivet nut through the connecting hole 2021, ensuring that the reinforcing member 202 is tightly in contact with the second mating surface of the hole edge 1012 of the first mounting hole 1011. At this time, the rivet nut is subjected to tension by the riveting equipment, so that the outer side of the rivet nut is squeezed and deformed, thereby forming the first protrusion 2014. The first protrusion 2014 abuts against the reinforcing member 202, thereby fixing the rivet nut and the reinforcing member 202 together to the edge of the housing 101. Then, the fastener 2012 is inserted into the second mounting hole 1021 and threadedly connected with the rivet nut.

[0073] It should be noted that for connecting members 201 without reinforcing members 202, the following can be used: Figure 3 The mounting component 2011 shown, in conjunction with the fastener 2012, connects the housing 101 and the cover 102. This can be achieved using the press-fit nut described in the above embodiment, or alternatively, a fastener such as... Figure 7 The mounting component 2011 shown cooperates with the fastener 2012 to connect the housing 101 and the cover 102. The rivet nut described in the above embodiment can be used, and this is not limited to that described herein. Meanwhile, in the above embodiment, the fastener 2012 can be, but is not limited to, a bolt, and a gasket is provided between the fastener 2012 and the second mounting hole 1021 of the cover 102 to prevent the fastener 2012 from loosening and to provide a seal.

[0074] In the above embodiments, the reinforcing member 202 can be a sheet-like structure, and its shape can be rectangular, circular, triangular, or other arbitrary shapes. The area, thickness, and other dimensions of the reinforcing member 202 can be selected and determined according to actual conditions, and are not limited herein.

[0075] This application also discloses an electrical device, including an explosion-proof box and electronic devices located inside the explosion-proof box. The explosion-proof box is the same as the one disclosed in the above embodiments, and therefore has all the technical effects of the above-mentioned explosion-proof boxes, which will not be repeated here.

[0076] The terms "first" and "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units may include steps or units not listed, but rather not listed.

[0077] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An explosion-proof box, characterized in that, include: The chassis (100) includes a housing (101) and a cover (102) covering an opening in the housing (101). A connecting assembly (200) includes at least two connecting members (201) for connecting the housing (101) and the cover (102), and a reinforcing member (202) is provided on a portion of the connecting members (201), the reinforcing member (202) being pulled or pressed onto the housing (101) by the connecting members (201).

2. The explosion-proof box according to claim 1, characterized in that, The connecting member (201) includes a mounting member (2011) disposed on the housing (101) and a fastener (2012) that cooperates with the mounting member (2011) and is disposed on the cover (102). The reinforcing member (202) is fixed to one side of the housing (101) by the mounting member (2011).

3. The explosion-proof box according to claim 2, characterized in that, The housing (101) is provided with a first mounting hole (1011), and the cover (102) is provided with a second mounting hole (1021) corresponding to the first mounting hole (1011). The mounting component (2011) includes an insertion section (2015) and a mounting section (2016), wherein the insertion section (2015) extends into the first mounting hole (1011) and the mounting section (2016) directly or indirectly abuts against the endplate (1012) of the first mounting hole (1011).

4. The explosion-proof box according to claim 3, characterized in that, The first mounting hole (1011) is provided with a limiting part (1013) in the circumferential direction. The insertion section (2015) of the mounting member (2011) cooperates with the limiting part (1013) to restrict the rotation of the mounting member (2011).

5. The explosion-proof box according to claim 3, characterized in that, The reinforcing member (202) is provided with a connecting hole (2021) sleeved on the outside of the insertion section (2015). The reinforcing member (202) is located between the mounting section (2016) and the hole edge (1012) of the first mounting hole (1011) so that the mounting section (2016) and the hole edge (1012) of the first mounting hole (1011) are indirectly abutted.

6. The explosion-proof box according to claim 3, characterized in that, The reinforcing member (202) and the mounting member (2011) are an integral structure, and the reinforcing member (202) is located at the end of the mounting section (2016) away from the first mounting hole (1011). The mounting section (2016) directly abuts against the edge (1012) of the first mounting hole (1011).

7. The explosion-proof box according to claim 6, characterized in that, One or more buffers (203) are provided on the mounting section (2016), and the buffers (203) are located between the reinforcing member (202) and the end of the hole (1012) of the first mounting hole (1011).

8. The explosion-proof box according to any one of claims 3 to 7, characterized in that, The outer ring of the mounting section (2016) is provided with a first protrusion (2014), which directly or indirectly abuts against the edge (1012) of the first mounting hole (1011).

9. The explosion-proof box according to claim 8, characterized in that, The outer ring of the insertion section (2015) is provided with a second protrusion (2017), the rim (1012) of the first mounting hole (1011) is located between the first protrusion (2014) and the second protrusion (2017), and the second protrusion (2017) abuts against the rim (1012) of the first mounting hole (1011).

10. The explosion-proof box according to claim 9, characterized in that, The outer diameter of the first protrusion (2014) is greater than the outer diameter of the mounting section (2016), and the outer diameter of the second protrusion (2017) is not less than the inner diameter of the first mounting hole (1011).

11. The explosion-proof box according to claim 1, characterized in that, There are multiple connecting members (201), and each connecting member (201) is arranged circumferentially along the chassis (100).

12. An electrical device, characterized in that, It includes the explosion-proof enclosure as described in any one of claims 1 to 11 and the electronic devices located inside the explosion-proof enclosure.

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