Explosion-proof box, electronic equipment and electric power system

Abstract

The utility model provides an explosion-proof box, electronic equipment and an electric power system, and relates to the field of electrical technology. The explosion-proof box comprises a box body, a box cover, a separable locking unit and an anti-falling unit; the box body is provided with an opening, and the box cover is connected with the box body through a separable locking unit, so that the box cover covers the opening; the anti-falling unit comprises an anti-falling structure arranged on the box cover and a stopping structure arranged on the box body, when the box cover covers the opening, the stopping structure and the anti-falling structure are arranged at intervals in the opening direction of the opening, and the stopping structure is located on the movement path of the anti-falling structure moving towards the side away from the box body in the opening direction. According to the anti-explosion box, the stroke of the box cover moving towards the side away from the box body in the opening direction of the opening is limited through the anti-falling structure, the box cover can be prevented from flying out due to explosion, on the basis that the protection requirement of the anti-explosion box is met, the initial locking force of the separable locking unit can be set to be small, pressure relief can be started at the initial stage of explosion, and the anti-explosion box is convenient to use. The explosion-proof performance of the explosion-proof box is good.

Description

Technical Field

[0001] The utility model relates to the field of electrical technology, and in particular to an explosion-proof box, electronic equipment and a power system. Background Art

[0002] In some equipment, there is a risk of explosion due to a sudden increase in chassis air pressure. For example, the capacitor in the inverter may deflagrate under certain conditions. This instantaneous increase in internal pressure will not only damage the equipment itself, but may also cause components to fly out and cause harm to personnel. In order to reduce the risk of explosion, explosion-proof boxes are usually used to prevent components from flying out. At present, explosion-proof boxes usually prevent components from flying out by safe pressure relief. In this case, the box cover is connected to a specific area of ​​the box body with a reinforced connection structure. When the air pressure in the box increases, the unreinforced part will undergo plastic deformation to form a pressure relief port or exhaust channel to prevent the box cover from flying out.

[0003] However, in this case, the pressure will only be relieved when the gas pressure in the explosion-proof box reaches the preset explosion pressure, which causes the explosion-proof box to be depressurized almost instantly, and the area where plastic deformation occurs is often small. The explosion is more severe, which may still cause parts to fly out. The explosion-proof performance needs to be improved. In addition, the box cover has a large degree of plastic deformation and is easily torn to produce a large gap, posing a safety hazard of touching the parts in the box. Utility Model Content

[0004] The utility model aims to solve the problem of how to improve the explosion-proof performance and safety performance of the explosion-proof box in the related technology to a certain extent.

[0005] In order to solve at least one aspect of the above-mentioned problems to at least a certain extent, in a first aspect, the utility model provides an explosion-proof box, comprising a box body, a box cover, a detachable locking unit and an anti-dropping unit; the box body is provided with an open opening, the box cover is connected to the box body through the detachable locking unit, so that the box cover is arranged at the open opening; the anti-dropping unit comprises an anti-dropping structure arranged on the box cover and a stopping structure arranged on the box body, when the box cover is arranged at the open opening, the stopping structure and the anti-dropping structure are arranged at intervals along the opening direction of the open opening, and the stopping structure is located on the movement path of the anti-dropping structure moving along the opening direction toward one side away from the box body.

[0006] Optionally, the anti-detachment unit further comprises a connecting column, wherein the connecting column is arranged on a side of the box cover close to the box body, the connecting column is extended along the opening direction, and the anti-detachment structure is arranged at an end of the connecting column away from the box cover.

[0007] Optionally, a limiting hole is provided on the box body, the connecting column is passed through the limiting hole, and the stop structure is formed on the circumferential side wall of the limiting hole.

[0008] Optionally, the limiting hole includes multiple hole segments, and the cross-sectional areas of the multiple hole segments decrease successively along the direction of the opening close to the box cover; when the box cover is arranged at the open mouth, at least two of the hole segments are located on the side of the anti-slip structure away from the box body along the opening direction, and the outer diameter of the anti-slip structure is larger than the hole diameter of the at least two hole segments; when the box cover moves along the opening direction in the direction away from the box body, the anti-slip structure is used to pass through at least a part of at least one of the hole segments by deformation.

[0009] Optionally, the anti-slip structure and the connecting column are detachably connected, and / or the connecting column and the box cover are detachably connected.

[0010] Optionally, the anti-slip unit further includes a first threaded connector, which is connected to the connecting column and presses the anti-slip structure onto the connecting column.

[0011] Optionally, the detachable locking unit includes one or more of a snap-fit ​​connection structure and a fastening connection structure.

[0012] Optionally, the fastening connection structure includes a first connecting hole, a second connecting hole and a second threaded connecting member, the first connecting hole and the second connecting hole are respectively arranged on the box cover and the box body; the second threaded connecting member is extended along the opening direction, the second threaded connecting member passes through the second connecting hole and is threadedly connected to the first connecting hole.

[0013] In a second aspect, the utility model provides an electronic device, comprising the explosion-proof box as described in the first aspect above.

[0014] In a third aspect, the utility model provides a power system, comprising the electronic device as described in the second aspect above.

[0015] Compared with the related prior art, in the present invention, when the detachable locking unit makes the box cover be located at the open mouth, the stop structure arranged on the box body in the anti-slip unit and the anti-slip structure arranged on the box cover are arranged at intervals along the opening direction of the open mouth, that is, the stop structure on the box body is used to not contact the anti-slip structure on the box cover, and only the detachable locking unit is used to provide the initial locking force between the box cover and the box body. Under the condition of meeting the protection level requirements, the initial locking force can be set to be smaller, so that when the internal pressure of the explosion-proof box increases, for example, greater than the preset pressure, the box cover is subjected to the pressure from the internal and external air of the explosion-proof box. When the force of the body pressure difference is greater than the initial locking force, the lock of the detachable locking unit is released, and the box cover can move along the opening direction of the opening port toward the direction away from the box body, and the gap between the box cover and the box body forms a pressure relief channel; the stop structure is set to be located on the movement path of the anti-slip structure along the opening direction of the opening port toward the side away from the box body. As the box cover moves along the opening direction of the opening port toward the side away from the box body, the stop structure on the box body can form a stop for the anti-slip structure on the box cover, thereby limiting the movement of the box cover along the opening direction of the opening port toward the side away from the box body, thereby preventing the box cover from flying out due to explosion. In general, the utility model can meet the demand for the box cover to move relative to the box body, thereby forming a pressure relief channel through the gap between the two, meeting the demand for rapid pressure relief, and can limit the movement of the box cover along the opening direction of the open mouth toward the side away from the box body through the anti-slip structure, which can prevent the box cover from flying out due to the explosion. On the basis of meeting the protection level requirements of the explosion-proof box, the initial locking force can be set to a smaller value, and pressure relief can be started at the early stage of the explosion. The explosion-proof box has good explosion-proof performance, high safety, and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the state of the explosion-proof box when the box cover is arranged at the open opening in the embodiment of the utility model;

[0017] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0018] Figure 3 for Figure 1 A partial enlarged view of point B in the middle;

[0019] Figure 4 In the embodiment of the utility model, the box cover is arranged at the opening of the explosion-proof box. Figure 1 The cross-sectional diagram corresponding to point A in the middle;

[0020] Figure 5 In the embodiment of the utility model, the box cover is arranged at the opening of the explosion-proof box. Figure 1 The cross-sectional diagram corresponding to point B in the figure;

[0021] Figure 6It is a schematic diagram of a state in which the box cover is restricted from being separated from the box body by the anti-detachment component after the explosion-proof box in the embodiment of the utility model occurs;

[0022] Figure 7 for Figure 6 A partial enlarged view of point C in the middle;

[0023] Figure 8 for Figure 6 A partial enlarged view of point D in the middle;

[0024] Fig. 9 In the embodiment of the utility model, the anti-drop assembly is used to limit the explosion-proof box when the box cover is separated from the box body. Figure 6 The cross-sectional diagram corresponding to point C in the middle;

[0025] Fig.10 In the embodiment of the utility model, the anti-drop assembly is used to limit the explosion-proof box when the box cover is separated from the box body. Figure 6 The cross-sectional diagram corresponding to point D in the figure;

[0026] Fig.11 It is a structural schematic diagram of the box cover of the explosion-proof box in the embodiment of the utility model;

[0027] Fig.12 This is a schematic structural diagram of a position limiting hole having four hole segments in another embodiment of the present utility model.

[0028] Description of reference numerals:

[0029] 1-box body; 2-box cover; 21-first surface; 3-detachable locking unit; 31-first connecting hole; 32-second connecting hole; 33-second threaded connector; 4-anti-slip unit; 41-anti-slip structure; 42-stop structure; 421-first hole section; 422-second hole section; 423-third hole section; 424-fourth hole section; 43-connecting column; 44-first threaded connector. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the description of this specification, the description with reference to the terms "embodiment", "one embodiment", "some embodiments", "exemplarily" and "one embodiment" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or embodiment are included in at least one embodiment or embodiment of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or embodiment. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or embodiments in a suitable manner.

[0033] The terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0034] In the accompanying drawings, the Z axis represents the vertical direction, that is, the up and down position, and the positive direction of the Z axis (that is, the direction of the arrow of the Z axis) represents the up, and the negative direction of the Z axis represents the down; the X axis in the accompanying drawings represents the front and back position, and the positive direction of the X axis (that is, the direction of the arrow of the X axis) represents the front side, and the negative direction of the X axis represents the back side; the Y axis in the accompanying drawings represents the horizontal direction and is designated as the left and right position, and the positive direction of the Y axis (that is, the direction of the arrow of the Y axis) represents the right side, and the negative direction of the Y axis represents the left side; it should be noted that the aforementioned Z axis, Y axis and X axis are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0035] like Figures 1 to 11 As shown, the utility model provides an explosion-proof box, comprising a box body 1, a box cover 2, a detachable locking unit 3 and an anti-dropping unit 4; the box body 1 is provided with an open opening, and the box cover 2 is connected to the box body 1 through the detachable locking unit 3, so that the box cover 2 is covered at the open opening; the anti-dropping unit 4 comprises an anti-dropping structure 41 arranged on the box cover 2 and a stop structure 42 arranged on the box body 1, when the box cover 2 is covered at the open opening, the stop structure 42 and the anti-dropping structure 41 are spaced apart along the opening direction of the open opening, and the stop structure 42 is located on the movement path of the anti-dropping structure 41 moving along the opening direction of the open opening toward a side away from the box body 1.

[0036] In this embodiment, an open opening is provided at the front side of the box body 1, that is, the opening direction of the open opening is the front-to-back direction, that is, the X-axis direction in the figure.

[0037] The box cover 2 is connected to the box body 1 through a detachable locking unit 3, so that the box cover 2 is set at the open mouth on the front side of the box body 1, so that the explosion-proof box meets the corresponding protection level requirements. When the box cover 2 is located at the initial installation position, the detachable locking unit 3 enables the box cover 2 to have an initial locking force to keep the cover set at the open mouth (or the initial holding force to keep the box cover 2 at the initial installation position). When the internal pressure of the box body 1 is greater than the preset pressure, the force of the pressure difference between the internal and external gases of the explosion-proof box on the box cover 2 is greater than the initial locking force, and the combined force on the box cover 2 is generally directed to the outside of the explosion-proof box along the opening direction of the open mouth, and the lock of the detachable locking unit 3 is unlocked, or released, and the box cover 2 moves forward along the X-axis direction. On this basis, the unlocking of the detachable locking unit 3 can be destructive or non-destructive, and the specific structure of the detachable locking unit 3 is not limited, and an exemplary description will be given later.

[0038] In this way, when the detachable locking unit 3 makes the box cover 2 cover the open mouth, the stop structure 42 arranged on the box body 1 in the anti-slip unit 4 is spaced apart from the anti-slip structure 41 arranged on the box cover 2 along the opening direction of the open mouth, that is, the stop structure 42 on the box body 1 is used to not contact the anti-slip structure 41 on the box cover 2, and only the detachable locking unit 3 is used to provide the initial locking force between the box cover 2 and the box body 1. Under the condition of meeting the protection level requirements, the initial locking force can be set to be smaller, so that when the internal pressure of the explosion-proof box increases, for example, greater than the preset pressure, the force acting on the box cover 2 from the pressure difference of the gas inside and outside the explosion-proof box is greater than With the initial locking force, the lock of the detachable locking unit 3 is released, and the box cover 2 can move along the opening direction of the open mouth toward the direction away from the box body 1, and the gap between the box cover 2 and the box body 1 forms a pressure relief channel; the stop structure 42 is set to be located on the movement path of the anti-slip structure 41 moving along the opening direction of the open mouth toward the side away from the box body 1. As the box cover 2 moves along the opening direction of the open mouth toward the side away from the box body 1, the stop structure 42 on the box body 1 can form a stop for the anti-slip structure 41 on the box cover 2, thereby limiting the movement of the box cover 2 along the opening direction of the open mouth toward the side away from the box body 1, thereby preventing the box cover 2 from flying out due to an explosion. In general, the utility model can meet the movement requirements of the box cover 2 relative to the box body 1, thereby forming a pressure relief channel through the gap between the two, meeting the demand for rapid pressure relief, and can limit the movement of the box cover 2 along the opening direction of the open mouth toward the side away from the box body 1 through the anti-slip structure 41, which can prevent the box cover 2 from flying out due to an explosion. On the basis of meeting the protection level requirements of the explosion-proof box, the initial locking force can be set to a smaller value, and pressure relief can be started at the early stage of the explosion. The explosion-proof box has good explosion-proof performance, high safety, and strong practicality.

[0039] like Figure 3 , Figure 5 , Figure 8 and Fig.10 As shown, optionally, the anti-slip unit 4 also includes a connecting column 43, which is arranged on a side of the box cover 2 close to the box body 1, and the connecting column 43 extends along the opening direction of the open mouth, and the anti-slip structure 41 is arranged at one end of the connecting column 43 away from the box cover 2.

[0040] Specifically, the box cover 2 has a first surface 21, which is attached to the box body 1 in the circumferential direction of the opening to form a fitting surface between the two. At this time, the first surface 21 surrounds the opening, thereby ensuring the protection requirements of the explosion-proof box.

[0041] The front end of the connecting column 43 is connected to the box cover 2 , the anti-slip structure 41 is disposed at the rear end of the connecting column 43 , and the anti-slip structure 41 is connected to the box cover 2 through the connecting column 43 .

[0042] In this way, the anti-slip structure 41 is connected to the box cover 2 through the connecting column 43. The setting of the connecting column 43 can make the position of the anti-slip structure 41 in the opening direction of the open opening be located on the side of the first surface 21 of the box cover 2 close to the box body 1, which meets the distance requirement between the anti-slip structure 41 and the first surface 21 in the opening direction of the open opening, facilitates the position and structural design of the stop structure 42 and the anti-slip structure 41, and meets the use requirements of the anti-slip unit 4.

[0043] like Figure 3 , Figure 5 , Figure 8 and Fig.10 As shown, in a further optional solution of the stop structure 42, a limiting hole is provided on the box body 1, the connecting column 43 is passed through the limiting hole, and the stop structure 42 is formed on the circumferential side wall of the limiting hole.

[0044] When an explosion occurs in the explosion-proof box and the detachable locking unit 3 is unlocked, the box cover 2 can move forward a certain distance until the anti-slip structure 41 abuts against the stop structure 42. During this process, a pressure relief channel is formed between the first surface 21 of the box cover 2 and the box body 1, thereby realizing the pressure relief of the explosion-proof box. When the anti-slip structure 41 abuts against the stop structure 42, the contact between the two can limit the box cover 2 from flying out completely, thereby preventing the box cover 2 from flying out due to the explosion force and causing safety hazards.

[0045] Exemplarily, the anti-dropout structure 41 is configured as a snap-fit ​​portion, and the stop structure 42 is configured as a snap-fitting portion, and the snap-fitting of the two is utilized to realize the anti-dropout of the box cover 2.

[0046] In another embodiment, the edge of the flange of the box body 1 at the open mouth is used to form a snap-fitting portion. In this case, there is no need to set a limiting hole, but the stop structure 42 has a higher position limit.

[0047] In this way, a limiting hole is provided, and the limiting hole is used for passing the connecting column 43 , so as to facilitate the arrangement of the stop structure 42 at the position of the box body 1 .

[0048] In the first optional solution of the limiting hole, the limiting hole is a through hole, and the aperture of each part of the through hole is kept consistent. In this case, the stop structure 42 is formed on the side wall of the limiting hole away from the box cover 2. That is, the rear end surface of the limiting hole is used to contact with the anti-slip structure 41 to limit the forward movement of the box cover 2.

[0049] In the second optional scheme of the limiting hole, the limiting hole includes multiple hole segments, and the cross-sectional areas of the multiple hole segments decrease successively along the opening direction of the open mouth approaching the box cover 2; when the box cover 2 is set at the open mouth, the anti-slip structure 41 is accommodated in the limiting hole.

[0050] like Figure 3 , Figure 5 , Figure 8 and Fig.10 As shown, specifically, the limiting hole is a stepped hole, the small end of the stepped hole is located at the end thereof close to the box cover 2, and the large end of the stepped hole is located at the end thereof away from the box cover 2. When the box cover 2 is set at the open mouth, the anti-slip structure 41 is accommodated in the stepped hole, and is spaced apart from the first hole section 421 close to the small end of the stepped hole. The projection of the anti-slip structure 41 along the opening direction of the open mouth coincides with the end face portion of the first hole section 421. Therefore, when the box cover 2 moves from its initial installation position (the position where the cover is set at the open mouth) along the opening direction of the open mouth toward a direction away from the box body 1, the end face of the first hole section 421 away from the box cover 2 can abut against the anti-slip structure 41 to limit the continued forward movement of the box cover 2.

[0051] like Fig.12 As shown, in an optional scheme of the limiting hole, the limiting hole includes a plurality of hole segments, and the cross-sectional areas of the plurality of hole segments decrease successively along the opening direction of the open mouth close to the box cover 2; when the box cover 2 is arranged at the open mouth, at least two hole segments are located on the side of the anti-slip structure 41 away from the box body 1 along the opening direction of the open mouth, and the outer diameter of the anti-slip structure 41 is larger than the aperture of at least two hole segments; when the box cover 2 moves along the opening direction of the open mouth in a direction away from the box body 1, the anti-slip structure 41 is used to pass through at least a portion of at least one hole segment by deformation.

[0052] like Fig.12 As shown, exemplarily, the limiting hole includes four hole segments, which are defined as the first hole segment 421, the second hole segment 422, the third hole segment 423 and the fourth hole segment 424 from front to back, respectively. The outer diameter of the anti-slip structure 41 is smaller than the aperture of the fourth hole segment 424, and the outer diameter of the anti-slip structure 41 is larger than the aperture of the third hole segment 423, so that the outer diameter of the anti-slip structure 41 is also larger than the aperture of the first hole segment 421 and the second hole segment 422.

[0053] When the box cover 2 is located at the opening, the first hole section 421, the second hole section 422 and the third hole section 423 are all located at the front side of the anti-slip structure 41, that is, located on the movement path of the anti-slip structure 41. When the box cover 2 moves along the opening direction of the opening to the side away from the box body 1, that is, moves forward to the point where the anti-slip structure 41 contacts the rear end face of the third hole section 423, the anti-slip unit 4 enables a certain position retention force between the box body 1 and the box cover 2. If the kinetic energy of the forward movement of the box cover 2 generated by the explosion is large, the anti-slip structure 41 can be deformed so that the box cover 2 can continue to move forward for a distance. For example, when the kinetic energy of the box cover 2 is large, the anti-slip structure 41 can be deformed to reduce its actual outer diameter, and detach from the rear end face of the third hole section 423, enter the third hole section 423, for example, abut against the rear end face of the second hole section 422, and maintain the position limit of the box cover 2 again. On the one hand, the coverage of the pressure relief channel between the box cover 2 and the box body 1 is increased, and the pressure relief speed is faster. On the other hand, the deformation of the anti-slip structure 41 can absorb the kinetic energy of the box cover 2 to a certain extent. Similarly, multi-level energy absorption and buffering of the movement of the box cover 2 can be achieved.

[0054] Of course, it should be understood that in some solutions, only two hole segments may be provided, such as the first hole segment 421 and the second hole segment 422. When the box cover 2 is set at the open mouth, the first hole segment 421 and the second hole segment 422 are both located at the front side of the anti-slip structure 41, that is, located on the movement path of the anti-slip structure 41. In this case, usually only the first-level energy absorption buffering of the movement of the box cover 2 can be achieved.

[0055] In a further optional solution, the contact area between the first hole segment 421 and the anti-slip structure 41 is greater than the contact area between the second hole segment 422 and the anti-slip structure 41 .

[0056] In this way, it can be ensured that when the first hole section 421 contacts the anti-slip structure 41 , the anti-slip structure 41 is reliably limited, thereby preventing the anti-slip structure 41 from being separated from the first hole section 421 .

[0057] In the above embodiment, the deformation of the anti-slip structure 41 may be plastic deformation, and a weakening structure, such as a weakening groove, may be provided on the anti-slip structure 41, so that the anti-slip structure 41 can be deformed in a preset manner.

[0058] Exemplarily, the anti-slip structure 41 is configured as a plate-like structure such as a circular plate, and weakening grooves are evenly arranged on the circumferential edge of the plate-like structure. The weakening grooves extend radially along the plate-like structure, and multiple weakening grooves are evenly distributed along the circumference of the plate-like structure. When the kinetic energy of the box cover 2 is large, the circumferential edge of the plate-like structure bends and deforms toward the rear side and separates from the corresponding hole segment. At the same time, the stiffness of the deformed plate-like structure can gradually become stronger due to the deformation (which can be approximately understood as becoming thicker in the opening direction of the open mouth), ensuring the decreasing abutment force between the first hole segment 421 and the plate-like structure.

[0059] In the above embodiments, optionally, the anti-slip structure 41 and the connecting column 43 are detachably connected, and / or the connecting column 43 and the box cover 2 are detachably connected.

[0060] In this way, the explosion-proof box can be easily assembled, and the inconvenience in connecting the box cover 2 and the box body 1 that may be caused by the integral connection of the anti-slip structure 41, the connecting column 43 and the box cover 2 can be avoided.

[0061] Furthermore, the anti-slip unit 4 further includes a first threaded connector 44 , which is connected to the connecting column 43 and presses the anti-slip structure 41 onto the connecting column 43 .

[0062] like Figure 3 , Figure 5 , Figure 8 and Fig.10 As shown, illustratively, the first threaded connector 44 is a screw, which passes through the anti-slip structure 41 and is threadedly connected to the connecting column 43 to press the anti-slip structure 41 onto the connecting column 43.

[0063] Exemplarily, the first threaded connector 44 is a nut, and a stud is provided on the connecting column 43 . The stud passes through the anti-slip structure 41 and is threadedly connected to the nut, thereby pressing the anti-slip structure 41 onto the connecting column 43 .

[0064] At this time, in both cases, the connecting column 43 can be integrally connected to the box cover 2, or detachably connected.

[0065] When the connecting column 43 is detachably connected to the box cover 2, the connecting column 43 and the box cover 2 can be connected in a threaded manner.

[0066] The screw can also pass through the anti-slip structure 41 and the connecting column 43 in sequence and be threadedly connected to the box cover 2. In this case, the anti-slip structure 41 can also be arranged to be connected integrally with the connecting column 43. Thus, the box cover 2 does not need to be integrally manufactured with the connecting column 43, which is convenient for molding.

[0067] In the above embodiments, it should be understood that the positions of the anti-slip structure 41 and the stop structure 42 can be interchanged, which is an equivalent solution of the present utility model and should be regarded as falling within the protection scope of the present utility model.

[0068] Optionally, the detachable locking unit 3 includes one or more of a snap connection structure and a fastening connection structure.

[0069] Specifically, when the detachable locking unit 3 includes a snap-connection structure, the box cover 2 and the box body 1 are snap-connected via the snap-connection structure, thereby achieving relative position locking of the box cover 2 and the box body 1, and utilizing the snap-connection force between the two parts of the snap-connection structure to provide an initial locking force between the two.

[0070] When the detachable locking unit 3 includes a fastening connection structure, the box cover 2 and the box body 1 are connected via the fastening connection structure, thereby achieving relative position locking of the box cover 2 and the box body 1, and utilizing the fastening connection structure to provide an initial locking force between the two.

[0071] In this way, the separable locking unit 3 has a simple structure and can achieve position locking between the box cover 2 and the box body 1 when the box cover 2 is placed at the opening.

[0072] like Figure 2 , Figure 4 , Figure 7 and Fig. 9 As shown, optionally, the fastening connection structure includes a first connection hole 31, a second connection hole 32 and a second threaded connection member 33, the first connection hole 31 and the second connection hole 32 are respectively arranged on the box cover 2 and the box body 1, and the second threaded connection member 33 is passed through the first connection hole 31 and the second connection hole 32.

[0073] Specifically, the first connecting hole 31 is arranged on the box cover 2, the second connecting hole 32 is arranged on the box body 1, the second threaded connecting member 33 is passed through the first connecting hole 31 and the second connecting hole 32 to realize the connection between the box cover 2 and the box body 1, and the connection method of the second threaded connecting member 33 can adopt relevant technology.

[0074] In this way, a reliable connection between the box cover 2 and the box body 1 can be achieved through the second threaded connector 33 when the box cover 2 is placed at the open opening.

[0075] In the first optional solution of the second threaded connection member 33, the second threaded connection member 33 passes through one of the first connection hole 31 and the second connection hole 32 and is threadedly connected to the other of the first connection hole 31 and the second connection hole 32.

[0076] Of course, in another manner, the second threaded connector 33 may pass through the first connection hole 31 and the second connection hole 32 and be connected to the nut.

[0077] like Figure 2 , Figure 4 , Figure 7 and Fig. 9 As shown, in a further optional solution, the second threaded connector 33 is extended along the opening direction of the opening, and the second threaded connector 33 passes through the second connecting hole 32 and is threadedly connected to the first connecting hole 31 .

[0078] At this time, the second connecting hole 32 is usually arranged at the edge of the open mouth of the box body 1. The second connecting hole 32 can be set as a stepped through hole as needed, and the first connecting hole 31 can be set as a through hole or a blind hole, which is preferably a blind hole, thereby avoiding the outer surface of the box cover 2 (the surface in the positive direction of the X-axis in the figure) from being uneven due to the setting of the first connecting hole 31, and can also ensure the protection level of the explosion-proof box.

[0079] In this way, when an explosion occurs in the explosion-proof box, even if the lock of the detachable locking unit 3 is released, the box cover 2 moves along the opening direction of the open port in a direction away from the box body 1 (that is, moves forward), and the second threaded connection 33 does not fly forward along the opening direction of the open port due to the explosion force, which can avoid the second threaded connection 33 flying out and causing a safety hazard, and has high reliability.

[0080] Optionally, a plug-in positioning unit is further included, and a plug-in positioning unit is provided between the box cover 2 and the box body 1 to achieve plug-in positioning of the box cover 2 and the box body 1 in the opening direction of the opening.

[0081] Optionally, the plug-in positioning unit includes a plug-in hole structure and a plug-in column structure, and the plug-in hole structure and the plug-in column structure are respectively arranged on the box cover 2 and the box body 1, and the plug-in hole structure and the plug-in column structure are plug-connected.

[0082] Optionally, a plug-in positioning unit is provided at the detachable locking unit 3 .

[0083] like Figure 3 , Figure 5 , Figure 8 and Fig.10 As shown, exemplarily, the second connecting hole 32 forms the plug-in structure, the first connecting hole 31 is arranged on the plug-in structure, the plug-in structure is inserted into the second connecting hole 32, and the second threaded connecting member 33 passes through the second connecting hole 32 and is threadedly connected to the first connecting hole 31 on the plug-in structure.

[0084] Of course, a plug-in positioning unit may also be provided at the anti-drop unit 4. Exemplarily, the above-mentioned limiting hole constitutes a plug-in hole structure, and the above-mentioned connecting column 43 constitutes a plug-in column structure.

[0085] In the above embodiments, it should be noted that the number of detachable locking units 3 is usually set to multiple, and the multiple detachable locking units 3 are, for example, evenly distributed along the circumference of the open mouth, and the number of anti-slip units 4 is usually set to multiple, and the multiple anti-slip units 4 are, for example, evenly distributed along the circumference of the open mouth. They are set according to specific needs and will not be described in detail here.

[0086] like Fig.11 As shown, it shows that the first connecting holes 31 of the detachable locking unit 3 are arranged at the four corners of the box cover 2, and the connecting columns 43 of the anti-dropping unit 4 are arranged at the central positions of the four edges of the box cover 2.

[0087] Another embodiment of the utility model provides an electronic device, which includes the explosion-proof box of the above embodiment. For example, the electronic device is an inverter, and the inverter has all the beneficial effects of the explosion-proof box. No detailed description is given here.

[0088] Another embodiment of the present invention provides a power system, which includes the electronic device of the above embodiment. For example, the power system is a photovoltaic power station system, etc., which is not intended to be limiting.

[0089] Although the utility model is disclosed as above, the protection scope of the utility model is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. An explosion-proof box, characterized in that: The invention comprises a box body (1), a box cover (2), a detachable locking unit (3) and an anti-slipping unit (4); the box body (1) is provided with an open opening, the box cover (2) is connected to the box body (1) via the detachable locking unit (3), so that the box cover (2) is located at the open opening; the anti-slipping unit (4) comprises an anti-slipping structure (41) arranged on the box cover (2) and a stop structure (42) arranged on the box body (1); when the box cover (2) is located at the open opening, the stop structure (42) and the anti-slipping structure (41) are arranged at intervals along the opening direction of the open opening, and the stop structure (42) is located on the movement path of the anti-slipping structure (41) moving along the opening direction to a side away from the box body (1).

2. The explosion-proof box according to claim 1, characterized in that: The anti-slip unit (4) further comprises a connecting column (43), wherein the connecting column (43) is arranged on a side of the box cover (2) close to the box body (1), the connecting column (43) is extended along the opening direction, and the anti-slip structure (41) is arranged at an end of the connecting column (43) away from the box cover (2).

3. The explosion-proof box according to claim 2, characterized in that: The box body (1) is provided with a limiting hole, the connecting column (43) is inserted into the limiting hole, and the stop structure (42) is formed on the circumferential side wall of the limiting hole.

4. The explosion-proof box according to claim 3, characterized in that: The limiting hole comprises a plurality of hole segments, and the cross-sectional areas of the plurality of hole segments decrease successively in the direction approaching the box cover (2) along the opening direction; when the box cover (2) is arranged at the open opening, at least two of the hole segments are located on a side of the anti-slip structure (41) away from the box body (1) along the opening direction, and the outer diameter of the anti-slip structure (41) is larger than the hole diameters of the at least two hole segments; when the box cover (2) moves in a direction away from the box body (1) along the opening direction, the anti-slip structure (41) is used to pass through at least a portion of at least one of the hole segments by deformation.

5. The explosion-proof box according to any one of claims 2 to 4, characterized in that: The anti-slip structure (41) and the connecting column (43) are detachably connected, and / or the connecting column (43) and the box cover (2) are detachably connected.

6. The explosion-proof box according to claim 5, characterized in that: The anti-slip unit (4) further comprises a first threaded connector (44), wherein the first threaded connector (44) is connected to the connecting column (43) and presses the anti-slip structure (41) onto the connecting column (43).

7. The explosion-proof box according to any one of claims 1 to 4, characterized in that: The detachable locking unit (3) comprises one or more of a snap-fit ​​connection structure and a fastening connection structure.

8. The explosion-proof box according to claim 7, characterized in that: The fastening connection structure comprises a first connection hole (31), a second connection hole (32) and a second threaded connection piece (33); the first connection hole (31) and the second connection hole (32) are respectively arranged on the box cover (2) and the box body (1); the second threaded connection piece (33) is extended along the opening direction, and the second threaded connection piece (33) passes through the second connection hole (32) and is threadedly connected to the first connection hole (31).

9. An electronic device, characterized in that: Comprising the explosion-proof box as described in any one of claims 1 to 8.

10. A power system, characterized in that: Comprising the electronic device as claimed in claim 9.

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