Electrical cassette components

Abstract

The present invention discloses an electrical dark box assembly, comprising a connecting frame and two electrical dark box bodies which are adjacently arranged on the left and right and spliced ​​with each other; the thickness of the electrical dark box body on the left side in the front-to-back direction is less than the thickness of the electrical dark box body on the right side in the front-to-back direction and the front end of the electrical dark box body on the right side protrudes from the front end of the electrical dark box body on the left side; a plurality of fracture grooves are circumferentially spaced at the edges of the left and right sides of each electrical dark box body; the connecting frame comprises a bottom plate and a vertical plate which is connected to the right side of the bottom plate and extends from the back to the front; when the right side edge of the electrical dark box body on the left side is removed and the left side edge of the electrical dark box body on the right side is removed, the bottom plate is used to be fixed to the front end of the electrical dark box body on the left side and the vertical plate is used to be spliced ​​to the front part of the left side edge of the electrical dark box body on the right side; the present invention can make the front end surfaces of electrical panels of different thicknesses be on the same plane.

Description

Technical Field

[0001] The invention relates to the technical field of electrical dark boxes, and in particular to an electrical dark box assembly. Background Art

[0002] An electrical box is a commonly used electrical device, which is embedded in a wall when in use. After the electrical box is fixed to the wall, the connection of the wires can be completed inside the electrical box, and then the socket panel, switch panel, box panel, or WIFI panel can be fixed to the opening at the front end of the electrical box. However, since the electrical boxes currently on the market have the same thickness in the front-to-back direction, after adjacent electrical boxes are embedded in the wall, when electrical panels of different thicknesses are fixed at the front ends of adjacent electrical boxes (for example, socket panels, switch panels, box panels, or WIFI panels of different panel thicknesses), the front end surface of the panel with a larger thickness will protrude from the front end surface of the panel with a smaller thickness, thereby resulting in the disadvantage of poor consistency with the electrical panel after the electrical box is fixed, and affecting the overall aesthetics of the electrical panel. Summary of the invention

[0003] In view of the deficiencies of the prior art, the present invention provides an electrical junction box assembly, which can make the front end surfaces of electrical panels of different thicknesses on the same plane, thereby improving the consistency of electrical panels of different thicknesses and the electrical junction box after being fixed, that is, improving the overall aesthetics of the electrical panel.

[0004] The electrical cassette assembly of the present invention comprises a connecting frame and two electrical cassette bodies which are adjacently arranged on the left and right and spliced ​​with each other; the thickness of the electrical cassette body on the left side in the front-to-back direction is less than the thickness of the electrical cassette body on the right side in the front-to-back direction and the front end of the electrical cassette body on the right side protrudes from the front end of the electrical cassette body on the left side; the edges of the left and right sides of each electrical cassette body are circumferentially spaced with a plurality of breaking grooves for facilitating the removal of the left and right sides of the electrical cassette body; the connecting frame comprises a bottom plate and a vertical plate connected to the right side of the bottom plate and extending from the back to the front; when the right side of the electrical cassette body on the left side is removed and the left side of the electrical cassette body on the right side is removed, the bottom plate is used to be fixed to the front end of the electrical cassette body on the left side and the vertical plate is used to be spliced ​​to the front part of the left side of the electrical cassette body on the right side.

[0005] By adopting the above-mentioned structure, when using the present invention, the installer can fix the thicker electrical panel at the front end of the electrical box body with a smaller thickness, and can fix the smaller electrical panel at the front end of the electrical box body with a larger thickness. Therefore, after the electrical panels of different thicknesses are fixed to the adjacent electrical box body, the front end surfaces of the electrical panels of different thicknesses can be on the same plane, thereby improving the consistency of the electrical panels of different thicknesses after being fixed to the electrical box, that is, improving the overall aesthetics of the electrical panel.

[0006] The electrical hidden box assembly of the present invention has a plurality of reinforcing blocks arranged at intervals from top to bottom at the inner corners of the connection between the bottom plate and the vertical plate, and each reinforcing block is connected to the bottom plate and the vertical plate as a whole; through the arrangement of the reinforcing blocks, the structural strength between the vertical plate and the bottom plate can be improved, that is, the fracture resistance between the vertical plate and the bottom plate can be improved.

[0007] The electrical junction box assembly of the present invention is characterized in that a first dovetail groove group is provided on the outer wall of two adjacent sides of each electrical junction box body, and a first dovetail rib group is provided on the outer wall of the other two adjacent sides of each electrical junction box body. The first dovetail rib group located on the outer wall of the electrical junction box body is used to cooperate and plug with the first dovetail groove group on the outer wall of the adjacent electrical junction box body from front to back. By adopting this structure, adjacent electrical junction box bodies can be spliced, thereby avoiding the mutual misalignment between adjacent electrical junction box bodies, that is, when the socket panel, switch panel or junction box panel is fixed to the front end opening of the electrical junction box body, it is possible to avoid the mutual misalignment of the socket panel, switch panel or junction box panel.

[0008] The electrical box assembly of the present invention, wherein the right end of the base plate is provided with a second dovetail groove group or a second dovetail rib group, and the right end of the base plate is connected to the left side of the electrical box body located on the right side through the second dovetail groove group and the first dovetail rib group that are plugged in and out, or the right end of the base plate is connected to the left side of the electrical box body located on the right side through the second dovetail rib group and the first dovetail groove group that are plugged in and out; by adopting this structure, the right end of the base plate can be conveniently connected to the electrical box body located on the right side, that is, the base plate and the electrical box body located on the right side can be reliably connected together, and in addition, under the action of the connecting frame, the electrical box body located on the left side and the electrical box body located on the right side can be reliably connected together, that is, the connection firmness of the electrical box body located on the left side and the electrical box body located on the right side can be improved.

[0009] The electrical junction box assembly of the present invention is characterized in that protrusions are arranged on the inner walls of the upper and lower opposite sides of each electrical junction box body, and a threaded hole is arranged in the middle of each protrusion from front to rear; a stopper is detachably connected to the front end of each protrusion, and each stopper is used to block the screws pre-installed in the threaded holes at the corresponding positions to prevent the screws from escaping from the threaded holes; through the setting of the stoppers, when the electrical junction box body is transported, the stoppers can block the screws pre-installed in the threaded holes, thereby preventing the screws pre-installed in the threaded holes from escaping from the threaded holes, and further preventing the screws pre-installed in the threaded holes from being lost.

[0010] The electrical junction box assembly of the present invention is characterized in that the rear sides of both ends of each block are provided with pins from front to rear, and the protrusions located on both sides of each threaded hole are provided with sockets from front to rear, and the two pins on each block are used to cooperate with the two sockets at the corresponding positions. By adopting this structure, each block can be conveniently connected to the front end of the protrusion on the corresponding side so that the block can block the screws pre-installed in the threaded hole, and when the electrical junction box body needs to be installed normally, the block can also be conveniently removed from the front end of the protrusion.

[0011] The electrical junction box assembly of the present invention is characterized in that the left end of the base plate is provided with two countersunk holes which are symmetrical in the upper and lower directions, and each countersunk hole is used for screws pre-installed in threaded holes at corresponding positions to pass through so as to fix the base plate to the front end of the electrical junction box body located on the left side; by adopting this structure, the left end of the base plate can be reliably fixed to the electrical junction box body located on the left side, and in addition, under the action of the connecting frame, the electrical junction box body located on the left side and the electrical junction box body located on the right side can be reliably connected together, that is, the connection firmness of the electrical junction box body located on the left side and the electrical junction box body located on the right side can be improved; in addition, the screws located in the threaded holes are also used to fix the socket panel or switch panel or junction box panel or WIFI panel, etc. installed at the front end of the electrical junction box body.

[0012] The electrical box assembly of the present invention is characterized in that a plurality of reinforcing ribs are arranged on the inner wall of each protrusion from front to rear; the arrangement of the reinforcing ribs can improve the structural strength of the protrusion itself, that is, the crack resistance of the protrusion can be improved, so that when the screw and the threaded hole are tightened, the protrusion can be effectively prevented from cracking, the rear end of each protrusion extends to the rear inner wall of the electrical box body and is connected to the rear inner wall of the electrical box body as a whole, and a plurality of reinforcing rib plates are arranged at the connection between the rear end of each protrusion and the rear inner wall of the electrical box body; the arrangement of the reinforcing rib plates can improve the connection strength between the protrusion and the electrical box body.

[0013] The electrical dark box assembly of the present invention, wherein the electrical dark box assembly also includes a "cross"-shaped positioning frame, a slot for clamping a horizontal bubble is horizontally arranged in the middle of the front end surface of the positioning frame, and an embedding groove is arranged on the rear side of the outer end of each positioning arm of the positioning frame, and each embedding groove is used to be respectively embedded with the front end of one of the side edges of one of the electrical dark box bodies; each positioning arm is provided with a through hole that penetrates the positioning arm from front to back, and each through hole is provided with a hook from front to back, and both sides of the front end of each hook are connected to the inner wall of the through hole at the corresponding position, and two of the relatively arranged hooks on the positioning frame They are respectively used to cooperate with one of the screws in the two threaded holes pre-installed on the corresponding electrical box body; through the provision of the positioning frame, after the positioning frame and the electrical box body are assembled and the level bubble is cooperated and engaged in the card slot on the positioning frame, when the electrical box body is fixed to the wall, it is possible to visually observe through the level bubble whether the electrical box body is in a horizontal state, so that after the electrical box body is fixed to the wall, the electrical box body can be avoided from tilting, that is, the socket panel or switch panel or box panel subsequently installed at the front end of the electrical box body can be avoided from tilting.

[0014] The electrical junction box assembly of the present invention is characterized in that the front end of each hook is provided with an extension section extending from the back to the front, and the front end of each extension section protrudes from the back to the front from the through hole at the corresponding position; through the provision of the extension section, when the positioning frame needs to be removed from the electrical junction box body, the extension section can be pulled to drive the hook to move so that the hook is disengaged from the screw pre-installed in the threaded hole, thereby facilitating the process of the positioning frame being disengaged from the electrical junction box body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure after two adjacent electrical cassette bodies are spliced ​​together and the positioning frame is assembled on one of the electrical cassette bodies;

[0017] Figure 2 for Figure 1 A schematic diagram of a partially exploded three-dimensional structure;

[0018] Figure 3 It is the first three-dimensional structural schematic diagram of a single electrical box body;

[0019] Figure 4 is a schematic diagram of the three-dimensional structure of the connecting frame;

[0020] Figure 5 is a schematic diagram of the three-dimensional structure of the positioning frame;

[0021] Figure 6 It is a schematic diagram of the three-dimensional structure of the stopper. DETAILED DESCRIPTION

[0022] The following will disclose multiple embodiments of the present invention with drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these practical details are not necessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

[0023] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0024] like Figure 1-6 As shown, the electrical cassette assembly of the present invention comprises a connecting frame 1 and two electrical cassette bodies 2 which are adjacently arranged on the left and right and spliced ​​with each other; the thickness of the electrical cassette body 2 on the left side in the front-to-back direction is less than the thickness of the electrical cassette body 2 on the right side in the front-to-back direction and the front end of the electrical cassette body 2 on the right side protrudes from the front end of the electrical cassette body 2 on the left side; the edges of the left and right sides of each electrical cassette body 2 are circumferentially spaced with a plurality of breaking grooves 21 for facilitating the removal of the left and right sides of the electrical cassette body 2; the connecting frame 1 comprises a bottom plate 11 and a vertical plate 12 connected to the right side of the bottom plate 11 and extending from the back to the front; when the right side of the electrical cassette body 2 on the left side is removed and the left side of the electrical cassette body 2 on the right side is removed, the bottom plate 11 is used to be fixed to the front end of the electrical cassette body 2 on the left side and the vertical plate 12 is used to be spliced ​​to the front part of the left side of the electrical cassette body 2 on the right side.

[0025] A number of reinforcing blocks 13 are arranged at intervals from top to bottom at the inner corners of the connection between the bottom plate 11 and the vertical plate 12, and each reinforcing block 13 is connected to the bottom plate 11 and the vertical plate 12 as a whole; by setting the reinforcing blocks, the structural strength between the vertical plate and the bottom plate can be improved, that is, the fracture resistance between the vertical plate and the bottom plate can be improved.

[0026] A first dovetail groove group 22 is provided on the outer wall of two adjacent sides of each electrical dark box body 2, and a first dovetail rib group 23 is provided on the outer wall of the other two adjacent sides of each electrical dark box body 2. The first dovetail rib group 23 located on the outer wall of the electrical dark box body 2 is used to cooperate and plug with the first dovetail groove group 22 on the outer wall of the adjacent electrical dark box body 2 from front to back; by adopting this structure, adjacent electrical dark box bodies can be spliced, thereby avoiding the mutual misalignment between adjacent electrical dark box bodies, that is, when the socket panel or switch panel or dark box panel or WIFI panel is fixed to the front end opening of the electrical dark box body, it can avoid the mutual misalignment of the socket panel or switch panel or dark box panel or WIFI panel.

[0027] The right end of the bottom plate 11 is provided with a second dovetail groove group 111 or a second dovetail rib group, and the right end of the bottom plate 11 is connected to the left side of the electrical cassette body 2 on the right side through the second dovetail groove group 111 and the first dovetail rib group 23 that are plugged in, or the right end of the bottom plate 11 is connected to the left side of the electrical cassette body 2 on the right side through the second dovetail rib group 22 that are plugged in; by adopting this structure, the right end of the bottom plate can be conveniently connected to the electrical cassette body on the right side, that is, the bottom plate and the electrical cassette body on the right side can be reliably connected together, in addition, under the action of the connecting frame, the electrical cassette body on the left side and the electrical cassette body on the right side can be reliably connected together, that is, the connection firmness of the electrical cassette body on the left side and the electrical cassette body on the right side can be improved.

[0028] A protrusion 24 is provided on the inner walls of the upper and lower opposite sides of each electrical junction box body 2, and a threaded hole 25 is provided in the middle part of each protrusion 24 from front to back; the front end of each protrusion 24 is detachably connected to a block 3, and each block 3 is used to block the screw pre-installed in the threaded hole 25 at the corresponding position to prevent the screw from escaping from the threaded hole 25; through the setting of the block, when the electrical junction box body is transported, the block can block the screw pre-installed in the threaded hole, thereby preventing the screw pre-installed in the threaded hole from escaping from the threaded hole, and further preventing the screw pre-installed in the threaded hole from being lost.

[0029] The rear sides of both ends of each block 3 are provided with pins 31 from front to back, and the protrusions 24 on both sides of each threaded hole 25 are provided with holes 26 from front to back. The two pins 31 on each block 3 are used to cooperate with the two holes 26 at the corresponding positions. By adopting this structure, each block can be conveniently connected to the front end of the protrusion on the corresponding side so that the block can block the screws pre-installed in the threaded hole, and when the electrical box body needs to be installed normally, the block can also be conveniently removed from the front end of the protrusion.

[0030] The left end of the base plate 11 is provided with two vertically symmetrical countersunk holes 112, each of which is used for a screw pre-installed in a threaded hole 25 at a corresponding position to pass through so as to fix the base plate 11 to the front end of the electrical junction box body 2 on the left side; by adopting this structure, the left end of the base plate can be reliably fixed to the electrical junction box body on the left side, and in addition, under the action of the connecting frame, the electrical junction box body on the left side and the electrical junction box body on the right side can be reliably connected together, that is, the connection firmness of the electrical junction box body on the left side and the electrical junction box body on the right side can be improved; in addition, the screws located in the threaded holes are also used to fix the socket panel or switch panel or junction box panel or WIFI panel, etc. installed at the front end of the electrical junction box body.

[0031] A plurality of reinforcing ribs 27 are arranged on the inner wall of each protrusion 24 from front to back; the arrangement of the reinforcing ribs can improve the structural strength of the protrusion itself, that is, the crack resistance of the protrusion can be improved, so that when the screw and the threaded hole are tightened, the protrusion can be effectively prevented from cracking. The rear end of each protrusion 24 extends to the rear inner wall of the electrical box body 2 and is connected to the rear inner wall of the electrical box body 2. A plurality of reinforcing rib plates 28 are arranged at the connection between the rear end of each protrusion 24 and the rear inner wall of the electrical box body 2; the arrangement of the reinforcing rib plates can improve the connection strength between the protrusion and the electrical box body.

[0032] The electrical dark box assembly also includes a "cross"-shaped positioning frame 4, a slot 41 for clamping a horizontal bubble is horizontally arranged in the middle of the front end surface of the positioning frame 4, and an embedding groove 43 is arranged on the rear side of the outer end of each positioning arm 42 of the positioning frame 4, and each embedding groove 43 is used to be respectively embedded with the front end of one of the side edges of one of the electrical dark box bodies 2; each positioning arm 42 is provided with a through hole 44 that penetrates the positioning arm 42 from front to back, and each through hole 44 is provided with a hook 45 from front to back, and both sides of the front end of each hook 45 are connected to the inner wall of the through hole 44 at the corresponding position, and two of the relatively arranged ones on the positioning frame 4 are connected to the inner wall of the through hole 44 at the corresponding position. The hooks 45 are respectively used to cooperate with one of the screws in the two threaded holes 25 pre-installed on the corresponding electrical box body 2; through the setting of the positioning frame, after the positioning frame and the electrical box body are assembled and the level bubble is engaged in the slot on the positioning frame, when the electrical box body is fixed to the wall, it is possible to visually observe through the level bubble whether the electrical box body is in a horizontal state, so that after the electrical box body is fixed to the wall, the electrical box body can be avoided from tilting, that is, the socket panel or switch panel or box panel subsequently installed at the front end of the electrical box body can be avoided from tilting.

[0033] The front end of each hook 45 is provided with an extension section 46 extending from the back to the front, and the front end of each extension section 46 protrudes from the back to the front from the through hole 44 at the corresponding position; through the provision of the extension section, when the positioning frame needs to be removed from the electrical box body, the extension section can be pulled to drive the hook to move so that the hook is disengaged from the screw pre-installed in the threaded hole, thereby facilitating the process of the positioning frame being disengaged from the electrical box body.

[0034] When using the present invention, firstly, the electrical cassette body on the left and the electrical cassette body on the right are spliced ​​together (when splicing the electrical cassette body on the left and the electrical cassette body on the right, the right edge fracture groove of the electrical cassette body on the left is removed, and the left edge fracture groove of the electrical cassette body on the right is removed, and then the connecting frame is assembled to the front end of the electrical cassette body on the left, and the right end of the bottom plate is connected to the left side of the electrical cassette body on the right, at this time, the vertical plate can be spliced ​​to the front part of the left side of the electrical cassette body on the right), and then the stopper at the front end of each protrusion is Remove it, then install the positioning frame on the front end of one of the electrical hidden box bodies, and make two of the relatively arranged hooks on the positioning frame cooperate with the screws pre-installed in the threaded holes to engage with each other, and then embed the two electrical hidden box bodies into the wall. During the process of embedding the two electrical hidden box bodies into the wall, adjust the two electrical hidden box bodies to a horizontal state by observing the level bubble in the card slot, and then fix the two electrical hidden box bodies with cement. After the cement solidifies, the positioning frame can be removed from the electrical hidden box body and the socket panel or switch panel or hidden box panel or WIFI panel can be fixed to the front end of the electrical hidden box body.

[0035] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An electrical dark box assembly, characterized in that: The invention comprises a connecting frame (1) and two electrical cassette bodies (2) which are arranged adjacent to each other and spliced ​​with each other; the thickness of the electrical cassette body (2) on the left side in the front-to-back direction is smaller than the thickness of the electrical cassette body (2) on the right side in the front-to-back direction and the front end of the electrical cassette body (2) on the right side protrudes from the front end of the electrical cassette body (2) on the left side; the edges of the left and right sides of each of the electrical cassette bodies (2) are provided with a plurality of fracture grooves (21) at circumferential intervals for facilitating the removal of the left and right sides of the electrical cassette body (2); the connecting frame (1) comprises a bottom plate (11) and a vertical plate (12) connected to the right side of the bottom plate (11) and extending from the back to the front; when the right side of the electrical cassette body (2) on the left side is removed and the left side of the electrical cassette body (2) on the right side is removed, the bottom plate (11) is used to be fixed to the front end of the electrical cassette body (2) on the left side and the vertical plate (12) is used to be spliced ​​to the right side of the electrical cassette body (2) The front part of the left side of the electrical dark box body (2); each of the inner walls of the upper and lower opposite sides of the electrical dark box body (2) is provided with a protrusion (24), and the middle part of each of the protrusions (24) is provided with a threaded hole (25) from front to back; the left end of the bottom plate (11) is provided with two countersunk holes (112) symmetrical in the upper and lower directions, and each of the countersunk holes (112) is used for passing a screw pre-installed in the threaded hole (25) at a corresponding position to fix the bottom plate (11) 1) is fixed to the front end of the electrical dark box body (2) located on the left side; a plurality of reinforcing ribs (27) are arranged on the inner wall of each of the protrusions (24) from front to back, the rear end of each of the protrusions (24) extends to the rear inner wall of the electrical dark box body (2) and is connected to the rear inner wall of the electrical dark box body (2) as a whole, and a plurality of reinforcing rib plates (28) are arranged at the connection between the rear end of each of the protrusions (24) and the rear inner wall of the electrical dark box body (2).

2. The electrical box assembly according to claim 1, characterized in that: A plurality of reinforcing blocks (13) are arranged at intervals from top to bottom at the inner corners of the connection between the bottom plate (11) and the vertical plate (12), and each of the reinforcing blocks (13) is integrally connected to the bottom plate (11) and the vertical plate (12).

3. The electrical dark box assembly according to claim 1 or 2, characterized in that: A first dovetail groove group (22) is provided on the outer wall of two adjacent sides of each electrical dark box body (2), and a first dovetail rib group (23) is provided on the outer wall of the other two adjacent sides of each electrical dark box body (2). The first dovetail rib group (23) located on the outer wall of the electrical dark box body (2) is used to cooperate and plug with the first dovetail groove group (22) on the outer wall of the adjacent electrical dark box body (2) from front to back.

4. The electrical box assembly according to claim 3, characterized in that: The right end of the base plate (11) is provided with a second dovetail groove group (111) or a second dovetail rib group, and the right end of the base plate (11) is connected to the left side of the electrical dark box body (2) located on the right side through the second dovetail groove group (111) and the first dovetail rib group (23) that are plugged in and matched, or the right end of the base plate (11) is connected to the left side of the electrical dark box body (2) located on the right side through the second dovetail rib group and the first dovetail groove group (22) that are plugged in and matched.

5. The electrical box assembly according to claim 1, characterized in that: A stopper (3) is detachably connected to the front end of each protrusion (24), and each stopper (3) is used to block a screw pre-installed in a threaded hole (25) at a corresponding position to prevent the screw from falling out of the threaded hole (25).

6. The electrical box assembly according to claim 5, characterized in that: A latch (31) is provided on the rear side of both ends of each stopper (3) from front to back, and a plug hole (26) is provided in the protrusion (24) on both sides of each threaded hole (25) from front to back, and the two latches (31) on each stopper (3) are used to cooperate with the two plug holes (26) at corresponding positions.

7. The electrical box assembly according to claim 1, characterized in that: The electrical dark box assembly further comprises a "cross"-shaped positioning frame (4), wherein a slot (41) for clamping a level bubble is horizontally arranged in the middle of the front end surface of the positioning frame (4), and an embedding slot (43) is arranged on the rear side of the outer end of each positioning arm (42) of the positioning frame (4), and each embedding slot (43) is respectively used to be embedded with the front end of one of the side edges of one of the electrical dark box bodies (2); each of the positioning arms (42) is provided with a through hole (44) penetrating the positioning arm (42) from front to back, and each of the through holes (44) is provided with a hook (45) from front to back, and both sides of the front end of each of the hooks (45) are connected to the inner wall of the through hole (44) at a corresponding position, and two of the hooks (45) arranged opposite to each other on the positioning frame (4) are respectively used to be engaged with a screw in two threaded holes (25) pre-installed on the corresponding electrical dark box body (2).

8. The electrical box assembly according to claim 7, characterized in that: The front end of each hook (45) is provided with an extension section (46) extending from the back to the front, and the front end of each extension section (46) protrudes from the back to the front from the through hole (44) at the corresponding position.

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