Fixing device for electrical box and electrical box

Abstract

This invention belongs to the field of electrical box technology, specifically relating to a fixing device for an electrical box and an electrical box itself. The fixing device for the electrical box includes a first connecting rod, a second connecting rod, and a folding mechanism. One end of the second connecting rod is hinged to one end of the first connecting rod, and one end of the folding mechanism is hinged to the other end of the first connecting rod. The other end of the folding mechanism is hinged to the other end of the second connecting rod. The folding mechanism has a closed state and an unfolded state. In the closed state, the other ends of the first and second connecting rods abut against each other. In the unfolded state, the first and second connecting rods are vertically aligned. By using the fixing device for the electrical box in this technical solution, the first and second connecting rods are vertically aligned in the unfolded state of the folding mechanism, thereby ensuring the fixing of the electrical box body and the box door in the open state, preventing it from automatically swinging shut and facilitating maintenance.

Description

Technical Field

[0001] This invention belongs to the field of electrical box technology, specifically relating to a fixing device for an electrical box and an electrical box. Background Technology

[0002] When performing maintenance work inside outdoor electrical boxes (distribution boxes, terminal boxes, monitoring boxes, automation terminal boxes, etc.), it is not only very inconvenient for the workers if it is raining or when the sun is shining and the temperature is high, but also because it is inconvenient to use an umbrella in the rain or to suffer from fatigue in the body or eyes due to direct sunlight. Moreover, the doors of outdoor electrical boxes cannot be opened and closed, which will interfere with the work of the workers. Although it will not cause serious injury, the occasional bumps and knocks can be very annoying for the workers. Summary of the Invention

[0003] The purpose of this invention is to provide a fixing device and an electrical box for electrical boxes, which solves the problem that existing outdoor electrical boxes cannot be fixed after being opened, causing the door to swing freely.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] The fixing device for the electrical box includes:

[0006] The first connecting rod is used to connect to the electrical box body;

[0007] The second connecting rod has one end hinged to one end of the first connecting rod and is used to connect to the cabinet door.

[0008] The folding mechanism has one end hinged to the other end of the first connecting rod and the other end hinged to the other end of the second connecting rod. The folding mechanism has a closed state and an unfolded state. When it is in the closed state, the other ends of the first connecting rod and the other ends of the second connecting rod abut against each other. When it is in the unfolded state, the first connecting rod and the second connecting rod are arranged perpendicularly.

[0009] In some embodiments of the present invention, the folding mechanism includes a first folding rod and a second folding rod, one end of the first folding rod is hinged to the other end of the first connecting rod, one end of the second folding rod is hinged to the other end of the second connecting rod, and the other end of the first folding rod is hinged to the other end of the second folding rod.

[0010] In some embodiments of the present invention, the folding mechanism further includes a limiting component, which includes an elastic element, a limiting block, and a first fixing element. The first fixing element is fixed to the first folding rod. One end of the elastic element is connected to the first fixing element, and the other end of the elastic element is connected to the limiting block. The limiting block is respectively sleeved on the first folding rod and the second folding rod, and can be displaced along a first direction.

[0011] In some embodiments of the present invention, the fixing device for the electrical box includes a power mechanism, one end of which is connected to the other end of the first connecting rod and one end of the second connecting rod, and the power mechanism is capable of driving the other end of the second connecting rod to move toward the other end of the first connecting rod.

[0012] In some embodiments of the present invention, the power mechanism includes a gravity block, a fixed pulley, and a connecting rope. One end of the connecting rope is connected to the gravity block, the middle section of the connecting rope is wound around the fixed pulley, and the other end of the connecting rope passes through the other end of the first connecting rod and is connected to the other end of the second connecting rod.

[0013] In some embodiments of the present invention, the vertical height of the fixed pulley is greater than the vertical height of the gravity block, the vertical height of the folding mechanism, and the vertical height of the second connecting rod.

[0014] In some embodiments of the present invention, the connecting rope is a steel wire rope.

[0015] In some embodiments of the present invention, the fixing device for the electrical box includes a shielding mechanism, the shielding mechanism includes a shielding member and a second fixing member, one end of the shielding member is connected to the second fixing member through a connector, one side of the shielding member is connected to the top end of the first connecting rod, and the other side of the shielding member is connected to the top end of the second connecting rod. The shielding member can be retracted or expanded with the movement of the second connecting rod.

[0016] In some embodiments of the present invention, the above-mentioned shielding member includes a plurality of shielding parts, the plurality of shielding parts are connected end to end in sequence and adjacent shielding parts can be folded, the shielding part located at the first position is defined as the first shielding part, the first shielding part is connected to the top end of the first connecting rod, and the shielding part located at the last position is defined as the second shielding part, the second shielding part is connected to the top end of the second connecting rod.

[0017] Another object of the present invention is to provide an electrical box, comprising:

[0018] The enclosure assembly includes an electrical box body and a box door, one side of which is rotatably connected to the electrical box body.

[0019] In any of the above embodiments, the fixing device for the electrical box has a first connecting rod connected to the top of the electrical box body, and a second connecting rod connected to the top of the box door.

[0020] Beneficial effects:

[0021] By using the fixing device for the electrical box in this technical solution, a combination structure of a first connecting rod, a second connecting rod, and a folding mechanism is adopted. The first connecting rod is fixed to the electrical box body, the second connecting rod is fixed to the box door, and the two ends of the folding mechanism are respectively hinged to the first and second connecting rods, and have a closed state and an unfolded state. In the closed state, the other ends of the first and second connecting rods abut against each other, thereby ensuring that the box door and the electrical box body are closed. In the unfolded state, the first and second connecting rods are vertically arranged, thereby ensuring that the electrical box body and the box door are fixed in the open state, so that they will not automatically swing and close, providing convenience for maintenance work and improving work efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the fixing device for the electrical box in the unfolded state according to a specific embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the fixing device for the electrical box in the folded state according to a specific embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the first connecting rod, the second connecting rod, and the folding mechanism of the fixing device for the electrical box provided in a specific embodiment of the present invention in an unfolded state.

[0025] Figure 4 This is a schematic diagram of the structure of the fixing device for the electrical box provided in a specific embodiment of the present invention, showing the first connecting rod, the second connecting rod, and the folding mechanism in their folded state.

[0026] Figure 5 This is a schematic diagram of the structure of the shielding component of the fixing device for the electrical box provided in a specific embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of another state of the shielding component of the fixing device for the electrical box provided in a specific embodiment of the present invention.

[0028] In the picture:

[0029] 10. First connecting rod;

[0030] 20. Second connecting rod; 21. U-shaped structure;

[0031] 31. First folding rod; 32. Second folding rod; 331. Limiting block; 332. Elastic element;

[0032] 41. Gravity block; 42. Fixed pulley; 43. Connecting rope;

[0033] 51. A shielding component; 511. A first shielding part; 512. A second shielding part; 52. A second fixing component. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0035] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0038] Example 1:

[0039] This embodiment provides a fixing device for an electrical box. Figure 1 A schematic diagram of the structure of the fixing device for the electrical box in its unfolded state according to an embodiment of the present invention is shown. Figure 2 A schematic diagram of the structure of a fixing device for an electrical box in its retracted state, according to an embodiment of the present invention, is shown. Figure 1 and 2 As shown, this invention proposes a fixing device for an electrical box and an electrical box. The fixing device for the electrical box in this invention includes a first connecting rod 10, a second connecting rod 20, and a folding mechanism. One end of the second connecting rod 20 is hinged to one end of the first connecting rod 10, one end of the folding mechanism is hinged to the other end of the first connecting rod 10, and the other end of the folding mechanism is hinged to the other end of the second connecting rod 20. The folding mechanism has a closed state and an unfolded state. When in the closed state, the other ends of the first connecting rod 10 and the second connecting rod 20 abut against each other. When in the unfolded state, the first connecting rod 10 and the second connecting rod 20 are arranged perpendicularly.

[0040] By using the fixing device for the electrical box in this technical solution, a combination structure of a first connecting rod 10, a second connecting rod 20, and a folding mechanism is adopted. The first connecting rod 10 is fixed to the electrical box body, and the second connecting rod 20 is fixed to the box door. The two ends of the folding mechanism are respectively hinged to the first connecting rod 10 and the second connecting rod 20, and have a closed state and an unfolded state. In the closed state, the other end of the first connecting rod 10 and the other end of the second connecting rod 20 abut against each other, thereby ensuring that the box door and the electrical box body are closed. In the unfolded state, the first connecting rod 10 and the second connecting rod 20 are vertically arranged, thereby ensuring that the electrical box body and the box door are fixed in the open state, so that they will not automatically swing and close, providing convenience for maintenance work and improving work efficiency.

[0041] Specifically, in this embodiment, one end of the first connecting rod 10 and one end of the second connecting rod 20 are rotatably connected by a pin, thereby ensuring that the other end of the second connecting rod 20 can move along the pin toward or away from the other end of the first connecting rod 10.

[0042] In some embodiments of the present invention, such as Figure 3 and 4As shown, the folding mechanism includes a first folding rod 31 and a second folding rod 32. One end of the first folding rod 31 is hinged to the other end of the first connecting rod 10 via a pin, and one end of the second folding rod 32 is hinged to the other end of the second connecting rod 20 via a pin. The other ends of the first folding rod 31 and the second folding rod 32 are also hinged together via pins. In this embodiment, in the folded state, one end of the first folding rod 31 abuts against one end of the second folding rod 32 (i.e., the included angle between the first folding rod 31 and the second folding rod 32 is approximately zero degrees). In the unfolded state, the included angle between the first folding rod 31 and the second folding rod 32 is 180 degrees. Since the two folding rods are connected to the first connecting rod 10 and the second connecting rod 20 respectively, they can be used to open and close the electrical box door. Simultaneously, they can achieve two fixed states for both the folding mechanism and the door, ensuring the electrical box body and door remain fixed in the open state, preventing them from automatically swinging shut. This facilitates maintenance work and improves operational efficiency.

[0043] In some embodiments of the present invention, such as Figure 3 and 4 As shown, the folding mechanism also includes a limiting component, which includes an elastic element 332, a limiting block 331, and a first fixing element. The first fixing element is fixed to the first folding rod 31. One end of the elastic element 332 is connected to the first fixing element, and the other end of the elastic element 332 is connected to the limiting block 331. The limiting block 331 is respectively sleeved on the first folding rod 31 and the second folding rod 32, and can be displaced along a first direction. In this embodiment, when the elastic element 332 is in its normally relaxed state, the limiting block 331 is respectively sleeved on the hinged position of the first folding rod 31 and the second folding rod 32. This ensures that the folding mechanism in the unfolded state can maintain a 180-degree angle between the first folding rod 31 and the second folding rod 32, preventing the two folding rods from folding. This ensures the electrical box body and the box door are fixed in the open state, preventing them from automatically swinging and closing, providing convenience for maintenance work and improving work efficiency.

[0044] When the operator finishes repairing the electrical box and needs to change the folding mechanism from the unfolded state to the folded state, they only need to slide the limiting block 331 towards the first fixing member until the limiting block 331 is completely disengaged from the second folding rod 32. Since the hinge point between the first folding rod 31 and the second folding rod 32 is exposed, the folding operation of both can be realized, thereby closing the box door. The first fixing member is a fixing pin. The elastic member 332 is a spring.

[0045] Specifically, such as Figure 3 and 4As shown, the limiting block 331 is a movable slider that restricts the two folding rods. When the two folding rods are opened to the horizontal position, the limiting block 331, under the action of the spring force, will restrict the two folding rods and prevent them from folding, keeping them in a straight state. In this way, the two connecting rods and the two folding rods form a triangle, supporting the blocking part 51 and preventing the door from closing. When it is necessary to close the door, simply press down the limiting block 331 by hand to make the folding rods fold at a certain angle. The entire folding mechanism will automatically retract under the action of the gravity block 41 and the steel wire rope, and close the door at the same time.

[0046] In some embodiments of the present invention, such as Figure 3 and 4 As shown, the fixing device for the electrical box includes a power mechanism. One end of the power mechanism is connected to one end of the second connecting rod 20 via the other end of the first connecting rod 10. The power mechanism can drive the other end of the second connecting rod 20 to move towards the other end of the first connecting rod 10. In this embodiment, the power mechanism ensures that the other end of the second connecting rod 20 always has a torque to move towards the other end of the first connecting rod 10, guaranteeing the tight closing of the box door and protecting the internal components from contamination. It also ensures that the folding mechanism has a certain closing force when switching from the unfolded state to the folded state, facilitating the closing of the box door and improving reliability.

[0047] In some embodiments of the present invention, such as Figure 3 and 4 As shown, the power mechanism includes a gravity block 41, a fixed pulley 42, and a connecting rope 43. One end of the connecting rope 43 is connected to the gravity block 41, the middle section of the connecting rope 43 is wound around the fixed pulley 42, and the other end of the connecting rope 43 passes through the other end of the first connecting rod 10 and is connected to the other end of the second connecting rod 20. In this embodiment, the gravity block 41 is the power component that drives the connecting rope 43. Its weight can provide a constant power to the second connecting rod 20. Compared with the elastic element 332, using the gravity block 41 to provide the pulling force can maintain the same force at a large stroke, thus improving reliability. The fixed pulley 42 is a mechanism for switching the connecting rope 43 from a horizontal to a vertical direction, which facilitates the change of force direction.

[0048] In some embodiments of the present invention, the vertical height of the fixed pulley 42 is greater than the vertical height of the gravity block 41, the vertical height of the folding mechanism, and the vertical height of the second connecting rod 20. In this embodiment, this ensures that the torque of the gravity block 41 can stably drive the second connecting rod 20 to move through the fixed pulley 42, thereby realizing the switching of different states of the folding mechanism.

[0049] In some embodiments of the present invention, the connecting rope 43 is a steel wire rope. In this embodiment, the steel wire rope plays a role in force transmission, and acts as a drive when the box door is closed. At the same time, the steel wire structure also has the advantage of high strength, which improves the service life of the overall fixing device.

[0050] In some embodiments of the present invention, such as Figure 1 and 2 As shown, the fixing device for the electrical box includes a shielding mechanism, which includes a shielding member 51 and a second fixing member 52. One end of the shielding member 51 is connected to the second fixing member 52 via a connector. One side of the shielding member 51 is connected to the top end of the first connecting rod 10, and the other side of the shielding member 51 is connected to the top end of the second connecting rod 20. The shielding member 51 can be folded or unfolded with the movement of the second connecting rod 20. In this embodiment, the second fixing member 52 is a movable joint with an internal mounting cavity. One end of the shielding member 51 is connected to the mounting cavity via a connecting rope 43 or other connecting components. The shielding member 51 can be unfolded and folded. When unfolded, it can adapt to the unfolded state of the folding mechanism; when folded, it can adapt to the folded state of the folding mechanism. The shielding member 51 is a rain curtain or a sunshade.

[0051] In some embodiments of the present invention, such as Figure 5 and 6 As shown, the blocking member 51 includes multiple blocking parts, which are connected end-to-end in sequence and adjacent blocking parts can be folded. The blocking part located at the first position is defined as the first blocking part 511, which is connected to the top end of the first connecting rod 10. The blocking part located at the last position is defined as the second blocking part 512, which is connected to the top end of the second connecting rod 20. In this embodiment, the first blocking part 511 is connected to the top end of the first connecting rod 10, and the second blocking part 512 is connected to the top end of the second connecting rod 20. The multiple blocking parts can be unfolded as the folding mechanism unfolds and folded as the folding mechanism closes.

[0052] Specifically, in this embodiment, the shielding member 51 is made of a material with a certain strength, strong toughness and corrosion resistance. The entire shielding member 51 is composed of a rectangular piece of the above material. After being repeatedly folded and pressed, the entire material can shrink into a fan shape, thus possessing strong elasticity and being able to open into a fan shape.

[0053] Furthermore, such as Figure 1As shown, the second connecting rod 20 is also equipped with a connector, which is a U-shaped structure 21 integrated with the second connecting rod 20. The connector is clipped on the upper side of the box door. When the box door is opened, the box door drives the connector and the rain curtain, and drives the gravity block 41 to rise through the steel wire rope to store energy. When the box door is closed, the gravity block 41 drives the steel wire rope-second connecting rod 20-box door connector-box door to close automatically.

[0054] Furthermore, the rain curtain is positioned towards the sky, while the fixing device is positioned towards the ground. Both ends of the rain curtain are connected to two connecting rods, which are folded and opened through a series of mechanisms. This mechanism also provides support, preventing the rain curtain from collapsing due to its softness. When retracted, the entire structure is extremely small and will not affect the normal operation of the electrical box.

[0055] Example 2:

[0056] In this embodiment, an electrical box is provided, which includes a box assembly and a fixing device for the electrical box; the box assembly includes an electrical box body and a box door, one side of the box door is rotatably connected to the electrical box body; a first connecting rod 10 of the fixing device for the electrical box is connected to the top end of the electrical box body, and a second connecting rod 20 of the fixing device for the electrical box is connected to the top end of the box door, and the fixing device for the electrical box is the aforementioned fixing device for the electrical box.

[0057] By using the electrical box in this technical solution, a fixing device for the electrical box is applied to the box assembly. The fixing device for the electrical box adopts a combination structure of a first connecting rod 10, a second connecting rod 20, and a folding mechanism. The first connecting rod 10 is fixed to the electrical box body, and the second connecting rod 20 is fixed to the box door. The two ends of the folding mechanism are respectively hinged to the first connecting rod 10 and the second connecting rod 20, and have a closed state and an unfolded state. In the closed state, the other end of the first connecting rod 10 and the other end of the second connecting rod 20 abut against each other, thereby ensuring that the box door and the electrical box body are closed. In the unfolded state, the first connecting rod 10 and the second connecting rod 20 are vertically arranged, thereby ensuring that the electrical box body and the box door are fixed in the open state, preventing them from automatically swinging and closing, providing convenience for maintenance work and improving work efficiency.

[0058] Furthermore, when maintenance or testing of the electrical box is required, the operator opens the box door. The door causes the second connecting rod 20 to rotate along one end of the rod. Simultaneously, since the second connecting rod 20 is connected to the second blocking part 512 of the blocking member 51, the blocking member 51 can be slowly unfolded. When the box door rotates to a certain position, i.e., when the angle between the first folding rod 31 and the second folding rod 32 is 180 degrees, the limiting block 331, due to the action of the elastic member 332, will slide to the hinge position between the first folding rod 31 and the second folding rod 32, preventing and limiting the shaking of the box door. At this time, the blocking member 51 is located at the top of the electrical box, in a fan-shaped unfolded state, providing shade and rain protection for the personnel.

[0059] When the operator finishes repairing or testing the electrical box, simply move the limiting block 331 toward the second fixing member 52 until the limiting block 331 disengages from the second folding rod 32. Since the gravity block 41 always exerts a pulling force on the second connecting rod 20 toward the first connecting rod 10, the included angle between the two folding rods will gradually change toward zero degrees. Finally, the box door will be fastened to the electrical box body, and the folding mechanism will reach the closed state. At the same time, the shielding member 51 connected to the first connecting rod 10 and the second connecting rod 20 will also be closed.

[0060] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A fixing device for an electrical box, characterized in that, include: The first connecting rod (10) is used to connect to the electrical box body; The second connecting rod (20) has one end hinged to one end of the first connecting rod (10) and is used to connect to the box door. The folding mechanism has one end hinged to the other end of the first connecting rod (10) and the other end hinged to the other end of the second connecting rod (20). The folding mechanism has a closed state and an unfolded state. When it is in the closed state, the other end of the first connecting rod (10) and the other end of the second connecting rod (20) abut against each other. When it is in the unfolded state, the first connecting rod (10) and the second connecting rod (20) are arranged perpendicularly. The folding mechanism includes a first folding rod (31) and a second folding rod (32). One end of the first folding rod (31) is hinged to the other end of the first connecting rod (10), one end of the second folding rod (32) is hinged to the other end of the second connecting rod (20), and the other end of the first folding rod (31) is hinged to the other end of the second folding rod (32). The folding mechanism further includes a limiting component, which includes an elastic element (332), a limiting block (331), and a first fixing element. The first fixing element is fixed to the first folding rod (31). One end of the elastic element (332) is connected to the first fixing element, and the other end of the elastic element (332) is connected to the limiting block (331). The limiting block (331) is respectively sleeved on the first folding rod (31) and the second folding rod (32), and can be displaced along the extension direction of the first folding rod (31) and the second folding rod (32). The fixing device for the electrical box includes a power mechanism. One end of the power mechanism passes through the other end of the first connecting rod (10) and is connected to the other end of the second connecting rod (20). The power mechanism can drive the other end of the second connecting rod (20) to move toward the other end of the first connecting rod (10). The power mechanism includes a gravity block (41), a fixed pulley (42), and a connecting rope (43). One end of the connecting rope (43) is connected to the gravity block (41), the middle section of the connecting rope (43) is wound around the fixed pulley (42), and the other end of the connecting rope (43) passes through the other end of the first connecting rod (10) and is connected to the other end of the second connecting rod (20).

2. The fixing device for an electrical box according to claim 1, characterized in that, The vertical height of the fixed pulley (42) is greater than the vertical height of the gravity block (41), the vertical height of the folding mechanism, and the vertical height of the second connecting rod (20).

3. The fixing device for an electrical box according to claim 1, characterized in that, The connecting rope (43) is a steel wire rope.

4. The fixing device for an electrical box according to claim 1, characterized in that, The fixing device for the electrical box includes a shielding mechanism, which includes a shielding member (51) and a second fixing member (52). One end of the shielding member (51) is connected to the second fixing member (52) through a connector. One side of the shielding member (51) is connected to the top end of the first connecting rod (10), and the other side of the shielding member (51) is connected to the top end of the second connecting rod (20). The shielding member (51) can be closed or opened with the movement of the second connecting rod (20).

5. The fixing device for an electrical box according to claim 4, characterized in that, The shielding member (51) includes multiple shielding parts, which are connected end to end in sequence and adjacent shielding parts can be folded. The shielding part located at the first position is defined as the first shielding part (511), which is connected to the top of the first connecting rod (10). The shielding part located at the last position is defined as the second shielding part (512), which is connected to the top of the second connecting rod (20).

6. An electrical box, characterized in that, include: A housing assembly, comprising an electrical box body and a door, wherein one side of the door is rotatably connected to the electrical box body; The fixing device for the electrical box as described in any one of claims 1-5, wherein the first connecting rod (10) of the fixing device for the electrical box is connected to the top end of the electrical box body, and the second connecting rod (20) of the fixing device for the electrical box is connected to the top end of the box door.

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