Electric box system

Abstract

The embodiment of the utility model relates to the technical field of electrical equipment, in particular to an electric box system. The electric box system comprises a box body, a protection mechanism and a transmission mechanism, the box body comprises a box body shell and a cover plate, the box body shell is provided with an opening, one end of the cover plate is rotatably connected with the box body shell, the cover plate has a closing position for blocking the opening and an opening position for opening the opening, and the protection mechanism is movably arranged in the box body shell. The protection mechanism is provided with a heat dissipation position moving towards the opening and a protection position moving away from the opening relative to the box body shell, when the protection mechanism moves to the protection position, the device part of the electrical assembly in the box body shell penetrates out of the protection mechanism, and the protection mechanism covers the wiring part of the electrical assembly in the box body shell; when the cover plate rotates to the closing position, the cover plate drives the protection mechanism to move to the heat dissipation position through the transmission mechanism, heat dissipation of the electrical assembly is guaranteed, when the cover plate rotates to the opening position, the protection mechanism moves to the protection position, operation is convenient, and the device is more attractive and safer.

Description

TECHNICAL FIELD

[0001] Embodiments of the present specification relate to the technical field of electrical equipment, and particularly relate to an electrical box system. BACKGROUND

[0002] In various scenarios of photovoltaic power generation, various electrical box systems such as inverters, combiner boxes, grid-connected boxes, etc. are required to play corresponding roles. The electrical box system in the related art includes a box body and various electrical components, and the box body is used to accommodate various electrical components, thereby improving the protection effect on the electrical components. However, when the cover plate of the box body is opened in the electrical box system provided in the related art, the wiring ports of various electrical components and the cables on the electrical components are directly exposed to various personnel such as workers or users, which has a safety hazard of electric shock caused by accidental touch of personnel. If a space dedicated for cable routing is designed inside the box body, the heat dissipation space of the electrical components and the cables will be reduced, and the heat dissipation effect of the electrical components and the cables will be reduced.

[0003] Therefore, there is an urgent need for an electrical box system to solve the above problems. CONTENT OF THE INVENTION

[0004] Embodiments of the present specification aim to provide an electrical box system to ensure the heat dissipation effect of electrical components and to be safer.

[0005] To achieve this purpose, embodiments of the present specification adopt the following technical solutions:

[0006] An electrical box system comprises:

[0007] a box body comprising a box body shell and a cover plate, the box body shell having an opening, one end of the cover plate being rotationally connected to the box body shell, the cover plate having a closed position for plugging the opening and an open position for opening the opening;

[0008] a protection mechanism movably arranged in the box body shell, the protection mechanism having a heat dissipation position for moving towards the opening and a protection position for moving away from the opening relative to the box body shell, and when the protection mechanism moves to the protection position, a device part of an electrical component in the box body shell passes through the protection mechanism, and the protection mechanism covers a wiring part of the electrical component in the box body shell;

[0009] a transmission mechanism arranged in the box body, when the cover plate is rotated to the closed position, the cover plate can drive the protection mechanism to move to the heat dissipation position through the transmission mechanism, and when the cover plate is rotated to the open position, the protection mechanism moves to the protection position.

[0010] As an optional solution, the transmission mechanism comprises:

[0011] a trigger assembly, one end of the trigger assembly is fixedly arranged on the inner side of the cover plate;

[0012] an execution assembly, the execution assembly comprises a driving cam, the driving cam is rotationally arranged in the box shell, the driving cam has a supporting position and a releasing position, in the process of rotating the driving cam to the supporting position, the driving cam abuts against the protection mechanism and pushes the protection mechanism to move from the protection position to the heat dissipation position, in the process of rotating the driving cam to the releasing position, the driving cam removes the abutment with the protection mechanism, when the cover plate rotates between the opening position and the closing position, the trigger assembly is in transmission connection with the driving cam, so as to rotate the driving cam between the supporting position and the releasing position.

[0013] As an optional solution, the trigger assembly comprises a trigger piece, the trigger piece is arc-shaped, one end of the trigger piece is fixedly arranged on the inner side of the cover plate, and a transmission tooth is arranged on the outer circumferential side of the trigger piece.

[0014] The execution assembly further comprises a driven wheel, the driven wheel is coaxially fixed with the driving cam, and the driven wheel is in meshing connection with the transmission tooth.

[0015] As an optional solution, the execution assembly comprises two driving cams which are arranged at intervals, the execution assembly further comprises a synchronous belt and two belt wheels, one of the belt wheels is coaxially fixed with each of the driving cams, one of the driving cams is coaxially fixed with the driven wheel, the synchronous belt is sleeved on the outer circumferences of the two belt wheels, and the two belt wheels jointly tension the synchronous belt.

[0016] As an optional solution, an accommodating cavity is arranged in the interior of the box shell, the synchronous belt, the belt wheels and the driven wheel are located in the accommodating cavity, the driving cams are located outside the accommodating cavity, a through hole is arranged on the cavity wall of the accommodating cavity, and the through hole is used for allowing the trigger piece to extend into the accommodating cavity.

[0017] As an optional solution, the box further comprises a protective shell, the protective shell is arranged in the box shell, the protective shell and the inner wall of the box shell jointly enclose the accommodating cavity, and the through hole is arranged on the protective shell.

[0018] As an optional solution, the electric box system comprises two transmission mechanisms which are arranged at intervals.

[0019] As an optional solution, a limiting part is arranged on the wheel edge of the driving cam, the limiting part can abut against the inner wall of the box shell, so as to position the driving cam at the releasing position.

[0020] As an option, the protection mechanism comprises:

[0021] A protection cover is provided with a relief hole for avoiding the device part;

[0022] An elastic connecting assembly is connected between the protection cover and the inner wall of the box shell.

[0023] As an option, the elastic connecting assembly comprises:

[0024] A fixed rod is fixedly connected at a first end to the inner wall of the box shell;

[0025] A movable rod is detachably connected at a first end to the protection cover, the movable rod is provided with an inner cavity, and the movable rod is slidingly sleeved on the outer periphery of the fixed rod;

[0026] An elastic member is arranged in the inner cavity and connected between the second end of the fixed rod and the bottom wall of the inner cavity.

[0027] The electric box system provided by the embodiments of the present application comprises a box body, a protection mechanism and a transmission mechanism, wherein the box body comprises a box shell and a cover plate, the box shell is provided with an opening, one end of the cover plate is rotationally connected to the box shell, the cover plate has a closed position for blocking the opening and an open position for opening the opening, the protection mechanism is movably arranged in the box shell, the protection mechanism has a heat dissipation position for moving towards the opening and a protection position for moving away from the opening relative to the box shell, and when the protection mechanism moves to the protection position, the device part of the electrical assembly in the box shell penetrates through the protection mechanism, and the protection mechanism covers the wiring part of the electrical assembly in the box shell, the transmission mechanism is arranged in the box body, when the cover plate rotates to the closed position, the cover plate can drive the protection mechanism to move to the heat dissipation position through the transmission mechanism, so as to give the electrical assembly a good heat dissipation space and ensure the heat dissipation effect of the electrical assembly, when the cover plate rotates to the open position, the protection mechanism moves to the protection position, which not only facilitates the operation of the device part of the electrical assembly, but also avoids the external leakage of the wiring part of the electrical assembly, and is more beautiful and safe. In addition, the position of the protection mechanism can be switched by operating the cover plate, so that the result is simple and the operation is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a structural schematic view of the electric box system provided by the embodiments of the present application when the cover plate is in the closed position;

[0029] Figure 2 is a structural schematic view of the electric box system provided by the embodiments of the present application when the cover plate is in the open position;

[0030] Figure 3 is a structural schematic view of the electric box system when the cover plate is in the open position and the protection mechanism is removed, provided by an embodiment of the present utility model;

[0031] Figure 4 is a structural sectional view of the electric box system when the cover plate is in the open position and the driving cam is in the release position, provided by an embodiment of the present utility model;

[0032] Figure 5 is a structural sectional view of the electric box system when the cover plate is in the closed position and the driving cam is in the support position, provided by an embodiment of the present utility model;

[0033] Figure 6 is a partial structural sectional view of the electric box system when the cover plate is in the open position, provided by an embodiment of the present utility model;

[0034] Figure 7 is a partial structural sectional view of the electric box system when the cover plate is in the closed position, provided by an embodiment of the present utility model;

[0035] Figure 8 is a structural schematic view of the transmission mechanism when the cover plate is in the open position, provided by an embodiment of the present utility model;

[0036] Figure 9 is a structural schematic view of the transmission mechanism when the cover plate is in the closed position, provided by an embodiment of the present utility model;

[0037] Figure 10 is a structural enlarged view of position A in the electric box system; Figure 2

[0038] Figure 11 is a structural schematic view of the protection mechanism, provided by an embodiment of the present utility model;

[0039] Figure 12 is an exploded view of the protection mechanism, provided by an embodiment of the present utility model;

[0040] Figure 13 is a position schematic view of the trigger and the driven wheel when the cover plate is in the open position, provided by an embodiment of the present utility model;

[0041] Figure 14 is a position schematic view of the trigger and the driven wheel when the cover plate is in the open position, provided by an embodiment of the present utility model;

[0042] Figure 15 is a structural design schematic view of the trigger, provided by an embodiment of the present utility model;

[0043] Figure 16 is a first position schematic view of the trigger and the driven wheel when the cover plate moves from the open position to the closed position, provided by an embodiment of the present utility model; ​

[0044] Figure 17 is a second position schematic view of the trigger and the driven wheel when the cover plate moves from the self-opening position to the closed position, provided by the embodiment of the utility model;

[0045] Figure 18 is a third position schematic view of the trigger and the driven wheel when the cover plate moves from the self-opening position to the closed position, provided by the embodiment of the utility model;

[0046] Figure 19 is a fourth position schematic view of the trigger and the driven wheel when the cover plate moves from the self-opening position to the closed position, provided by the embodiment of the utility model.

[0047] In the figure:

[0048] 1, box body; 11, box body shell; 111, open; 12, cover plate; 13, protective shell; 131, through the mouth; 14, accommodating cavity;

[0049] 2, protection mechanism; 21, protection cover; 211, avoiding hole; 22, elastic connecting assembly; 221, fixed rod; 222, movable rod; 2221, inner cavity; 223, elastic piece;

[0050] 3, transmission mechanism; 31, trigger; 311, transmission teeth; 32, execution assembly; 321, driving cam; 3211, limiting part; 322, driven wheel; 323, synchronous belt; 324, pulley;

[0051] 4, electrical assembly; 41, device part; 42, wiring part. DETAILED DESCRIPTION

[0052] In order to make the technical problems solved by the embodiments of the present specification, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present specification will be further described below in conjunction with the drawings and through specific embodiments.

[0053] In the description of the embodiments of the present specification, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present specification can be understood according to the specific circumstances.

[0054] In the embodiments of the present specification, unless specifically defined and limited otherwise, "on" or "under" of a first feature to a second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "over" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. "Under", "below" and "under" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0055] In the description of the present embodiments, the terms "upper", "lower", "left", "right", and the like orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present embodiments. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0056] The electric box system in the related art includes a box body and various electrical components, and the box body is used to accommodate various electrical components, thereby improving the protection effect of the electrical components. However, the electric box system provided in the related art directly exposes the wiring ports of various electrical components and the cables on the electrical components in front of various personnel such as workers or users when the cover plate of the box body is opened, which has the safety hazard of electric shock caused by accidental touch of personnel. If a space dedicated for wiring is designed inside the box body, the heat dissipation space of the electrical components and the cables will be reduced, and the heat dissipation effect of the electrical components and the cables is reduced.

[0057] In order to solve the above problems, as Figures 1-5As shown, this embodiment provides an electrical box system, which includes a box body 1, a protection mechanism 2, and a transmission mechanism 3. The box body 1 includes a box shell 11 and a cover plate 12. The box shell 11 has an opening 111. One end of the cover plate 12 is rotatably connected to the box shell 11. The cover plate 12 has a closed position to block the opening 111 and an open position to open the opening 111. The protection mechanism 2 is movably disposed within the box shell 11 and has a dissipation mechanism relative to the box shell 11 that moves towards the opening 111. The protective mechanism 2 moves to a protected position away from the opening 111 and, when the protective mechanism 2 moves to the protected position, the device part 41 of the electrical component 4 inside the housing 11 passes through the protective mechanism 2, and the protective mechanism 2 covers the wiring part 42 of the electrical component 4 inside the housing 11. The transmission mechanism 3 is provided on the housing 1. When the cover 12 is rotated to the closed position, the cover 12 can drive the protective mechanism 2 to move to the heat dissipation position through the transmission mechanism 3. When the cover 12 is rotated to the open position, the protective mechanism 2 moves to the protected position.

[0058] The electrical box system provided in this embodiment, such as Figure 1 and Figure 5 As shown, after maintenance, inspection, and operation are completed, and the cover plate 12 is rotated to the closed position, the cover plate 12 can drive the protection mechanism 2 to move to the heat dissipation position through the transmission mechanism 3, so that the protection mechanism 2 moves toward the opening 111, thereby providing good heat dissipation space for the electrical components 4 and ensuring the heat dissipation effect of the electrical components 4; as Figure 2 and Figure 4 As shown, when facing situations such as maintenance, inspection, or operation, and the cover 12 is rotated to the open position, the protection mechanism 2 moves to the protected position, causing it to move away from the opening 111. This allows the component part 41 of the electrical component 4 inside the enclosure 11 to protrude through the protection mechanism 2, while the protection mechanism 2 covers the wiring part 42 of the electrical component 4 inside the enclosure 11. This not only facilitates personnel operation of the component part 41 of the electrical component 4 but also prevents the wiring part 42 of the electrical component 4 from being exposed, thus preventing accidental contact with the wiring part 42 and improving aesthetics and safety. Furthermore, the electrical box system provided in this embodiment allows for the switching of the position of the protection mechanism 2 simply by operating the cover 12, making the result simple and the operation convenient.

[0059] Optionally, in this embodiment, the electrical box system can be an inverter, a grid-connected box, a combiner box, or a distribution box, but it is not limited to these. The electrical box system can also be other types of electrical box systems, making it suitable for various scenarios and with a wide range of applications. Optionally, in this embodiment, the device part 41 can be a knife switch, button, switch, display device, or display component, etc. Optionally, in this embodiment, the wiring part 42 can be a wiring port, connecting cable, etc.

[0060] Optionally, in the embodiment, the cover plate 12 is made of a metal piece and is bent, which not only facilitates the processing of the cover plate 12, but also ensures the structural strength of the cover plate 12. Optionally, in the embodiment, one end of the cover plate 12 is rotatably connected to the side of the box shell 11 through a hinge, which ensures the reliability of the rotation of the cover plate 12 relative to the box shell 11.

[0061] In the embodiment, as shown in Figures 3-5 the transmission mechanism 3 includes a trigger assembly and an execution assembly 32, one end of the trigger assembly is fixedly arranged on the inner side of the cover plate 12, the execution assembly 32 includes a driving cam 321, the driving cam 321 is rotatably arranged in the box shell 11, the driving cam 321 has a supporting position and a releasing position, in the process of rotating to the supporting position, the driving cam 321 abuts against the protection mechanism 2 and pushes the protection mechanism 2 to move from the protection position to the heat dissipation position, in the process of rotating to the releasing position, the driving cam 321 removes the abutment with the protection mechanism 2, when the cover plate 12 rotates between the open position and the closed position, the trigger assembly is in transmission connection with the driving cam 321, so as to make the driving cam 321 rotate between the supporting position and the releasing position. In the embodiment, as shown in Figure 4 when the cover plate 12 moves towards the open position, the cover plate 12 drives the trigger assembly to move, so that the trigger assembly drives the driving cam 321 to rotate to the releasing position, so that the protection mechanism 2 is automatically reset to the protection position; as shown in Figure 5 when the cover plate 12 moves towards the closed position, the cover plate 12 drives the trigger assembly to move, so that the trigger assembly drives the driving cam 321 to rotate to the supporting position, so that the driving cam 321 pushes the protection mechanism 2 to the heat dissipation position. The structural design of the above-mentioned transmission mechanism 3 adopts a pure mechanical transmission mode for driving, which improves the reliability of the work of the transmission mechanism 3. In addition, by rotating the driving cam 321, the position switching of the protection mechanism 2 is realized, so that the structure is simple and the design is ingenious. Optionally, in the embodiment, when the driving cam 321 rotates to the supporting position, the abutment of the wheel edge of the driving cam 321 abutting against the protection mechanism 2 is towards the front side; when the driving cam 321 rotates to the releasing position, the abutment of the wheel edge of the driving cam 321 abutting against the protection mechanism 2 is towards the rear side, so as to ensure that the rotation angle of the driving cam 321 is a fixed value when the cover plate 12 rotates between the open position and the closed position.

[0062] Optionally, in the embodiment, as shown in Figures 6-9As shown in the figure, the trigger assembly comprises a trigger piece 31, the trigger piece 31 is arc-shaped, one end of the trigger piece 31 is fixedly arranged on the inner side of the cover plate 12, the other end of the trigger piece 31 is suspended, and a transmission tooth 311 is arranged on the outer circumferential side of the trigger piece 31. The execution assembly 32 further comprises a driven wheel 322, the driven wheel 322 is coaxially fixed with the driving cam 321, and the driven wheel 322 is engaged with the transmission tooth 311. The above arrangement makes the cover plate 12 drive the trigger piece 31 to engage with the driven wheel 322 when the cover plate 12 rotates between the open position and the closed position, so that the driven wheel 322 drives the driving cam 321 to rotate, and the driving cam 321 switches between the supporting position and the releasing position. Alternatively, in the embodiment, as shown in the figure, Figure 6 and Figure 8 As shown in the figure, when the cover plate 12 is in the open position, the cover plate 12 drives the trigger piece 31 to disengage from the engagement transmission with the driven wheel 322. Alternatively, in the embodiment, one end of the trigger piece 31 is welded to the inner side of the cover plate 12.

[0063] Alternatively, in the embodiment, as shown in the figure, Figures 6-9 The execution assembly 32 comprises two driving cams 321 arranged along the left-right direction in the figure, the execution assembly 32 further comprises a synchronous belt 323 and two belt pulleys 324, one belt pulley 324 is coaxially fixed with each driving cam 321, one of the driving cams 321 is coaxially fixed with the driven wheel 322, and the synchronous belt 323 is sleeved on the outer circumferences of the two belt pulleys 324, and the two belt pulleys 324 jointly tension the synchronous belt 323. The above arrangement makes it possible to drive the two driving cams 321 to rotate simultaneously by using one trigger piece 31, so that the two driving cams 321 jointly push the protection mechanism 2 to the heat dissipation position, ensuring the reliability of the pushing of the protection mechanism 2, and also making the structure simple. In addition, the synchronous rotation of the two driven wheels 322 is realized by the synchronous belt 323, making the structure reliable. Alternatively, in the embodiment, the three of the driven wheel 322, the driving cam 321 and the belt pulley 324 coaxially fixed on the left side are coaxially fixed by a shaft, and are rotatably connected in the box shell 11 through the shaft. The driving cam 321 and the belt pulley 324 coaxially fixed on the right side are coaxially fixed by a shaft, and are rotatably connected in the box shell 11 through the shaft.

[0064] Optionally, in the embodiment, the trigger 31 is a quarter of a circular ring, and the transmission teeth 311 are present on a partial area on the outer circumferential side of the trigger 31, and the center of the trigger 31 is located at the hinged connection of the cover plate 12 and the box shell 11. In order to facilitate the design of the trigger 31, the radius size of the trigger 31 is equal to the depth size of the box shell 11 in the front-rear direction, and the trigger 31 rotates with the cover plate 12 with the hinged connection of the cover plate 12 and the box shell 11 as the center, and when the cover plate 12 is in the closed position, the overhanging end of the trigger 31 is just located at the inner wall of the rear side of the box shell 11. Optionally, in the embodiment, the outer teeth of the driven wheel 322 are tangent to the inner wall of the rear side of the box shell 11, and the inner wall of the rear side of the box shell 11 does not interfere with the rotation of the driven wheel 322, thereby facilitating the determination of the installation position of the rotating shaft on the driven wheel 322.

[0065] Optionally, in the embodiment, as shown in Figure 4 and Figure 5 , the electric box system comprises two transmission mechanisms 3 arranged at intervals, and the two transmission mechanisms 3 are arranged at intervals in the up-down direction, so that the cover plate 12 can make the two transmission mechanisms 3 move synchronously during rotation to the closed position, so that the four transmission cams 321 arranged at intervals synchronously push the protection mechanism 2 to the heat dissipation position, further ensuring the reliability of the pushing of the protection mechanism 2.

[0066] In the embodiment, as shown in Figure 6 , Figure 7 and Figure 10 , the inside of the box shell 11 is provided with a containing cavity 14, the synchronous belt 323, the belt pulley 324 and the driven wheel 322 are all located in the containing cavity 14, the drive cam 321 is located outside the containing cavity 14, and the containing cavity 14 is provided with a through hole 131 on the cavity wall, and the through hole 131 is used for the trigger 31 to extend into the containing cavity 14. By containing the synchronous belt 323, the belt pulley 324 and the driven wheel 322 in the containing cavity 14, the protection of the synchronous belt 323, the belt pulley 324 and the driven wheel 322 is effectively improved, and it is also more neat and beautiful. Since the drive cam 321 needs to abut against the protection mechanism 2, the drive cam 321 is arranged outside the containing cavity 14. In addition, by arranging the through hole 131, it is ensured that the trigger 31 can pass through the through hole 131 and engage with the driven wheel 322 in the containing cavity 14.

[0067] Specifically, in the embodiment, the box body 1 further comprises a protective shell 13, the protective shell 13 is arranged in the box shell 11, the protective shell 13 and the inner wall of the box shell 11 jointly enclose to form a containing cavity 14, and a through hole 131 is arranged on the protective shell 13. It should be noted that the protective shell 13 is arranged at the bottom wall and the top wall of the box shell 11, thereby ensuring that part of the components in the two transmission mechanisms 3 are contained.

[0068] In the embodiment, as shown in Figure 6 , Figure 8 The wheel edge of the drive cam 321 is provided with a limiting portion 3211, the limiting portion 3211 can abut against the inner wall of the box shell 11, so as to position the drive cam 321 at the release position. The above arrangement avoids excessive rotation of the drive cam 321 under the action of inertial force, and ensures that the drive cam 321 is positioned at the release position.

[0069] In the embodiment, as shown in Figure 6 , Figure 11 and Figure 12 The protection mechanism 2 comprises a protection cover 21 and an elastic connecting assembly 22, wherein the protection cover 21 is provided with a relief hole 211 for avoiding the device part 41, the elastic connecting assembly 22 is connected between the protection cover 21 and the inner wall of the box shell 11, and the protection cover 21 can abut against the drive cam 321. By arranging the relief hole 211 on the protection cover 21, when the protection mechanism 2 moves to the protection position, the device part 41 can be exposed outside the protection cover 21 through the relief hole 211 at the corresponding position. In addition, by arranging the elastic connecting assembly 22, when the protection mechanism 2 is pushed to the heat dissipation position, at this time the elastic connecting assembly 22 is in a stretched state, when the drive cam 321 removes the abutment with the protection cover 21, at this time the protection cover 21 moves away from the opening 111 under the elastic action of the elastic connecting assembly 22, so that the protection mechanism 2 is automatically reset to the protection position under the action of the elastic force.

[0070] Optionally, in the embodiment, as shown in Figure 6 and Figure 12As shown, the elastic connecting assembly 22 comprises a fixed rod 221, a movable rod 222 and an elastic piece 223, wherein the first end of the fixed rod 221 is fixedly connected to the inner wall of the box shell 11, the first end of the movable rod 222 is detachably connected to the protective cover 21, the movable rod 222 is provided with an inner cavity 2221, the movable rod 222 is slidingly sleeved on the outer periphery of the fixed rod 221, the elastic piece 223 is arranged in the inner cavity 2221, and the elastic piece 223 is connected between the second end of the fixed rod 221 and the bottom wall of the inner cavity 2221. The structure design of the above-mentioned elastic connecting assembly 22 makes the sleeving depth of the movable rod 222 and the fixed rod 221 shallowest when the protection mechanism 2 is pushed to the heat dissipation position, and the elastic piece 223 is in a stretched state, when the driving cam 321 removes the abutment with the protective cover 21, at this time, the movable rod 222 drives the movable rod 222 to move away from the opening 111 under the elastic action of the elastic piece 223, so that the sleeving depth of the movable rod 222 and the fixed rod 221 is increased, and at this time, the movable rod 222 drives the protective cover 21 to move away from the opening 111. By arranging the elastic piece 223 in the inner cavity 2221, the positioning and installation of the elastic piece 223 are realized. Alternatively, the elastic piece 223 can be a spring or a compression spring. In addition, by detachably connecting the first end of the movable rod 222 to the protective cover 21, it is convenient to detach the protective cover 21 in the box shell 11. Alternatively, in this embodiment, the first end of the movable rod 222 is detachably fixed to the protective cover 21 by means of bolts, so as to facilitate the maintenance of the electrical components 4 covered by the protective cover 21 in the box shell 11. In other embodiments, the first end of the movable rod 222 and the protective cover 21 can also be detachably connected by magnetic attraction, so that the dismounting and mounting operation of the protective cover 21 is more convenient.

[0071] Alternatively, in this embodiment, as shown in Figure 11 and Figure 12 , the four corners of the protective cover 21 are provided with elastic connecting assemblies 22, so that the movement of the protective cover 21 is more stable and reliable.

[0072] In order to facilitate the understanding of the transmission mechanism 3 disclosed in this embodiment, the related design of the trigger piece 31 and the driven wheel 322 will be described with reference to Figures 13-19

[0073] As shown in Figure 13 and Figure 14 , a Cartesian coordinate system is established with the rotation center of the trigger piece 31 as the center, when the cover plate 12 is in the open position, the angle between the center line of the trigger piece 31 and the driven wheel 322 and the X axis is α, which can be calculated as:

[0074] α = arcsin((R-r) / (R+r));

[0075] ​Wherein, the radius of the trigger 31 is R, and the radius of the driven wheel 322 is r, so it is known that after the cover plate 12 rotates by α, the trigger 31 starts to contact the driven wheel 322, and the transmission ratio n of the trigger 31 and the driven wheel 322 is R / r. In the embodiment, the angle of rotation of the driving cam 321 between the support position and the release position is θ (in the embodiment, θ = 90°), and since the driving cam 321 is coaxially fixed with the driven wheel 322, the rotation angle of the driven wheel 322 is also θ.

[0076] In the process of rotating the cover plate 12 from the open position to the closed position, in the case that the driven wheel 322 rotates by an angle of θ = 90°, according to the gear transmission law, it is known that the angle of rotation of the trigger 31 is β1 = θ·r / R; if the entire outer periphery of the trigger 31 has transmission teeth 311, after the trigger 31 rotates by an angle of α, there is still an angle of β2 = θ-α that is meshed with the driven wheel 322, that is, the trigger 31 can still rotate by an angle of β2 = θ-α, and it is difficult to ensure that β1 = β2.

[0077] Therefore, the position of the transmission teeth 311 on the trigger 31 needs to be designed so that when the transmission teeth 311 rotate by an angle of β2, the driven wheel 322 just rotates by an angle of θ due to the special position of the transmission teeth 311. The design method is as follows:

[0078] 1) It is known that in the process of rotating the cover plate 12 from the open position to the closed position, the driven wheel 322 needs to rotate by an angle of θ (here θ = 90°);

[0079] 2) After the trigger 31 rotates by an angle of α, it will contact the driven wheel 322;

[0080] 3) The transmission teeth 311 can not be provided on the outer periphery of the trigger 31 in the range of the central angle of γ from the overhanging end of the trigger 31, so that even if the trigger 31 and the driven wheel 322 are in contact, they will not be meshed, and the trigger 31 can still rotate by an angle of β2 = θ-α;

[0081] 4) After the trigger 31 continues to rotate by an angle of γ, the trigger 31 and the driven wheel 322 start to mesh, and the trigger 31 can still rotate by an angle of β3 = θ-α-γ;

[0082] 5) According to the gear transmission law and 1), it is easy to know that the angle of rotation of the trigger 31 is β1 = θ·r / R, so β3 = β1, and γ = θ-α-θ·r / R = θ-arcsin((R-r) / (R+r))-θ·r / R.

[0083] Through the above design, the distribution form of the transmission teeth 311 of the trigger 31 can be determined as follows: Figure 16As shown, the trigger 31 itself is a quarter of a circular ring, the trigger 31 is not provided with the transmission teeth 311 at the outer periphery side of the range of the central angle γ from the free end thereof, while the transmission teeth 311 exist at the outer periphery side of the remaining central angle θ-γ range of the trigger 31, and under this design, the rotation state of the cover plate 12 during the process of rotating from the open position to the closed position is as shown in Figures 17-19

[0084] After the transmission teeth 311 of the trigger 31 are designed as above, the trigger 31 can rotate a certain angle during the process of rotating the cover plate 12 from the open position to the closed position, and due to the unique design of the transmission teeth 311, the driven wheel 322 can rotate 90° under the driving of the trigger 31.

[0085] Obviously, the above-mentioned embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the implementation of the present application. Based on the above-mentioned description, other different forms of changes or variations can be made by those skilled in the art. Here, it is not necessary and impossible to enumerate all the implementations. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the claims of the present application.​

Claims

1. An electrical box system, characterized by, The utility model relates to a box (1) and protection mechanism (2) and transmission mechanism (3) and trigger component and execution component (32) and drive cam (321) and transmission gear (311) and driven wheel (322), and it is provided that the box (1) includes box shell (11) and cover plate (12), the box shell (11) has the open mouth (111), one end of cover plate (12) is rotatably connected with the box shell (11), and the cover plate (12) has the closed position of blocking the open mouth (111) and the open position of opening the open mouth (111). The protection mechanism (2) is movably arranged in the box shell (11), and the protection mechanism (2) has the heat dissipation position moving towards the open mouth (111) and the protection position moving away from the open mouth (111) relative to the box shell (11), and when the protection mechanism (2) moves to the protection position, the device part (41) of the electrical assembly (4) in the box shell (11) penetrates through the protection mechanism (2), and the protection mechanism (2) covers the wiring part (42) of the electrical assembly (4) in the box shell (11). The transmission mechanism (3) is arranged in the box (1), and when the cover plate (12) rotates to the closed position, the cover plate (12) can drive the protection mechanism (2) to move to the heat dissipation position through the transmission mechanism (3), and when the cover plate (12) rotates to the open position, the protection mechanism (2) moves to the protection position. The transmission mechanism (3) includes:

2. The electrical box system of claim 1, wherein, The trigger component is fixedly arranged at one end of the inner side of the cover plate (12); The execution component (32) includes a drive cam (321), which is rotatably arranged in the box shell (11), and the drive cam (321) has a supporting position and a releasing position, in the process of rotating to the supporting position, the drive cam (321) abuts against the protection mechanism (2) and pushes the protection mechanism (2) to move from the protection position to the heat dissipation position, in the process of rotating to the releasing position, the drive cam (321) removes the abutment with the protection mechanism (2), and when the cover plate (12) rotates between the open position and the closed position, the trigger component is in transmission connection with the drive cam (321), so that the drive cam (321) rotates between the supporting position and the releasing position. The trigger component includes a trigger piece (31), which is arc-shaped, one end of the trigger piece (31) is fixedly arranged at the inner side of the cover plate (12), and transmission gears (311) are arranged on the outer circumferential side of the trigger piece (31); 3. The electrical box system according to claim 2, wherein, The execution component (32) further includes a driven wheel (322), which is coaxially fixed with the drive cam (321), and the driven wheel (322) is in meshing connection with the transmission gears (311). ​ 4. The electrical box system according to claim 3, wherein, The execution assembly (32) comprises two spaced driving cams (321), and further comprises a synchronous belt (323) and two belt pulleys (324), one of the driving cams (321) is coaxially fixed with one of the belt pulleys (324), and the other driving cam (321) is coaxially fixed with the driven wheel (322), and the synchronous belt (323) is sleeved on the outer periphery of the two belt pulleys (324), and the two belt pulleys (324) jointly tension the synchronous belt (323).

5. The electrical box system according to claim 4, wherein, The box shell (11) is internally provided with a containing cavity (14), the synchronous belt (323), the belt pulley (324) and the driven wheel (322) are located in the containing cavity (14), the driving cam (321) is located outside the containing cavity (14), and a penetrating opening (131) is formed in the cavity wall of the containing cavity (14) and used for extending the trigger piece (31) into the containing cavity (14).

6. The electrical box system according to claim 5, wherein, The box (1) further comprises a protective shell (13), the protective shell (13) is arranged in the box shell (11), the protective shell (13) and the inner wall of the box shell (11) jointly form the containing cavity (14), and the penetrating opening (131) is arranged in the protective shell (13).

7. The electrical box system according to any one of claims 2-6, wherein, The electric box system comprises two spaced transmission mechanisms (3).

8. The electrical box system according to any one of claims 2-6, wherein, The wheel edge of the driving cam (321) is provided with a limiting portion (3211), the limiting portion (3211) can abut against the inner wall of the box shell (11), so that the driving cam (321) is positioned at the release position.

9. The electrical box system according to any one of claims 1-6, wherein, The protection mechanism (2) comprises: A protective cover (21) is arranged, and an avoiding hole (211) is formed in the protective cover (21) and used for avoiding the device portion (41); An elastic connecting assembly (22) is connected between the protective cover (21) and the inner wall of the box shell (11).

10. The electrical box system according to claim 9, wherein, The elastic connecting assembly (22) comprises: A fixed rod (221) is fixedly connected to the inner wall of the box shell (11); An active rod (222) is detachably connected to the protective cover (21), and the active rod (222) is provided with an inner cavity (2221), and the active rod (222) is slidably sleeved on the outer periphery of the fixed rod (221); An elastic member (223) is arranged in the inner cavity (2221), and the elastic member (223) is connected between the second end of the fixed rod (221) and the bottom wall of the inner cavity (2221).

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