Electrical box, duct machine and air conditioning system

Abstract

The present invention discloses an electrical box, a duct machine and an air conditioning system. The electrical box comprises a box body, a box cover, screw mounting holes arranged on its side wall and a protective bracket covering each screw mounting hole arranged inside the box body; the electrical box is installed on a cover plate, the cover plate is provided with a first folded edge and a second folded edge, a hook is provided on the first folded edge, the box body comprises an opening, the box body comprises a first side wall and a second side wall, a first protective bracket is fitted with the first folded edge, the second side wall is fitted and fixed with the second folded edge, a first screw mounting hole is opened on the second side wall, a first protective bracket is provided on the first side wall, a second screw mounting hole is further provided in the box body, and a second protective bracket is provided at the second screw mounting hole. Compared with the prior art, the present application can avoid the situation where these structures cause cutting lines.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to an electrical box, a duct machine and an air conditioning system. Background Art

[0002] At present, most of the ducted air conditioners on the market are equipped with electrical boxes. The fixing screws of the electrical boxes are often facing the inside of the electrical box. At the same time, there are screws inside the electrical box. The electrical box cover, the cover plate of the ducted air conditioner, the hook, etc. will also have sharp metal edges extending into the electrical box. Because the tail of the screw and these sharp metal edges are sharp, it is not only easy to scratch people, but also there is a hidden danger of cutting the wiring inside the electrical box. For example, if the outer insulating rubber of the line is damaged, it is easy to induce a short circuit in the air conditioner and cause a malfunction, which seriously causes electrical safety accidents and endangers the personal safety of users. At present, some products will stick sponges at the above-mentioned hidden dangers to avoid problems, but the sponge is easy to be scratched when it is stuck on the electrical box during transportation and placement, or the sponge falls off due to the decrease in viscosity due to temperature changes, or the sponge is easy to be scratched during the disassembly and assembly of the electrical box cover during after-sales maintenance. Summary of the invention

[0003] The invention provides an electrical appliance box, a duct machine and an air conditioning system, which solve the problem in the prior art that the wires inside the electrical appliance box are easily cut.

[0004] The technical solution adopted by the present invention is: an electrical appliance box, including a box body and a box cover, the box body including screw mounting holes arranged on its side wall for respectively fixing the box body and the box cover, the box body and the air-conditioning system, the electrical appliance box also includes: a protective bracket covering each of the screw mounting holes on the inner side wall of the box body.

[0005] Further, the air-conditioning system includes a cover plate, which is provided with adjacent first and second folded edges; the box body includes an opening, and the box cover is covered on the opening; the box body includes adjacent first side wall and second side wall, the second side wall is fitted and fixed with the second folded edge, and the second side wall is provided with a first screw mounting hole for screwing the second folded edge; the opening of the first side wall is provided with a first protective bracket located on the first screw mounting hole close to the center side of the box body, and the first protective bracket is fitted with the first folded edge.

[0006] Furthermore, the first folded edge is provided with a hook, and the hook comprises: a bent portion fixedly attached to the first folded edge, a hook portion connected to the bent portion and extending toward the outside of the first folded edge

[0007] Furthermore, the bending portion includes an extension plate extending toward the inside of the box body, and the first protective bracket includes a first avoidance groove for avoiding the extension plate.

[0008] Furthermore, the extension plate is provided with a third bayonet, and the box cover includes a third card body passing through the first avoidance groove and engaging with the third bayonet.

[0009] Furthermore, the first avoidance groove is connected to the second side wall, and the first screw mounting hole is arranged in the first avoidance groove.

[0010] Furthermore, the first side wall includes an inserting plate extending toward the outside of the opening, the first protective bracket is provided with a slot, and the inserting plate and the slot are clamped and fixed.

[0011] Furthermore, the box body is also provided with a second screw mounting hole for fixing the cover plate with screws, and the protective bracket includes a second protective bracket covering the second screw mounting hole.

[0012] Furthermore, the cover plate is provided with a wire passing opening, and the second protective bracket is provided with a wire passing groove connected to the wire passing opening.

[0013] Furthermore, the second protective bracket is fixed to the box body by clamping, and / or the second protective bracket is fixed to the box body by screws.

[0014] Furthermore, a second bayonet is provided on the second side wall, the second protective bracket is provided with a second card body adapted to the second bayonet, and the end surface of the box body opposite to the opening is screwed to the second protective bracket.

[0015] The duct machine comprises the electrical box.

[0016] An air conditioning system, comprising the duct air conditioner.

[0017] Compared with the prior art, the present application provides a protective bracket at the screw mounting hole on the inside of the box body to cover the screw mounting hole to form an independent chamber, which can provide good protection for various screws used to install the box cover and the box body itself. At the same time, various sharp sheet metal parts extending into the interior of the box body can also be blocked in the independent chamber to avoid cutting lines caused by these structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a schematic diagram of the installation structure of the electrical box in the present invention;

[0020] Figure 2 This is a schematic diagram of the installation structure of the electrical box of the present invention without the box cover;

[0021] Figure 3 It is a schematic diagram of the structure of the hook in the present invention;

[0022] Figure 4 for Figure 1 Schematic diagram of the cross-sectional structure in the A direction;

[0023] Figure 5 for Figure 1 Schematic diagram of the cross-sectional structure in the B direction;

[0024] Figure 6 This is a schematic diagram of the installation structure of the box body and the protective bracket in one direction in the present invention;

[0025] Figure 7 for Figure 6 The enlarged structural schematic diagram of C in the middle;

[0026] Figure 8 This is a schematic diagram of the installation structure of the box body and the protective bracket in another direction of the present invention.

[0027] 1. Cover plate; 11. First folding edge; 12. Second folding edge; 2. Electrical box; 21. Box body; 22. Box cover; 211. First side wall; 212. Second side wall; 213. First screw mounting hole; 214. Second screw mounting hole; 215. Insert plate; 216. First bayonet; 3. First protective bracket; 31. First plate body; 311. First card body; 32. Bump; 33. Slot; 34. Second plate body; 35. First avoidance groove; 4. Second protective bracket; 41. Second card body; 42. Support part; 43. Transition surface; 44. Give way part; 45. Second bayonet; 46. Extension column; 47. Baffle; 48. Second avoidance groove; 5. Hook; 51. Bending part; 511. Extension plate; 512. Third bayonet; 221. Third card body; 52. Hook part. DETAILED DESCRIPTION

[0028] The principle and structure of the present invention are described in detail below with reference to the accompanying drawings and embodiments.

[0029] The present application discloses an electrical box 2, which is installed in a housing of an air conditioning system. In this embodiment, the electrical box 2 installed in a duct unit is taken as an example for description.

[0030] like Figures 1 to 2As shown, the duct machine includes a shell, in which components such as an electrical box 2, a motor and a centrifugal fan blade are installed respectively, wherein the shell includes a cover plate 1, and the electrical box 2 is fixedly installed with the cover plate 1; the electrical box 2 is composed of a box body 21 and a box cover 22, the box body 21 is a rectangular box body 21, which has an opening at one end, and various components are built into the box body 21, and the box cover 22 is later covered on the box body 21 to close it.

[0031] Among them, the box body 21 includes a first side wall 211 and a second side wall 212, and the first side wall 211 and the second side wall 212 are adjacent to each other. When the electrical box 2 is installed, the first side wall 211 is attached to the plate surface of the cover plate 1; and the cover plate 1 is also a rectangular plate body, and a folded edge is also provided on the edge of the cover plate 1, and the folded edges are respectively a first folded edge 11 and a second folded edge 12. The first folded edge 11 and the second folded edge 12 are arranged at the installation position of the electrical box 2 so that the first folded edge 11 and the second folded edge 12 can fit with the side wall of the electrical box 2, and screws are used to fix the electrical box 2 and the folded edges together later.

[0032] See attached Figure 2 To Attachment Figure 5 Specifically, the first folded edge 11 is arranged and abutted against the opening of the box body 21, and the first folded edge 11 specifically abuts against the open end of the first side wall 211, and the second folded edge 12 is fitted with the second side wall 212, and a first screw mounting hole 213 is arranged on the second side wall 212, and a corresponding hole is arranged on the second folded edge 12, and screws are used to pass through the second folded plate and the first screw mounting hole 213 from the outside of the electrical box 2 to fix the electrical box 2 and the cover plate 1 together.

[0033] Furthermore, the present application provides a first protective bracket 3 at the opening of the box body 21, and the first protective bracket 3 is specifically installed on the first side wall 211, and the two ends of the first protective bracket 3 are respectively abutted against the side walls on the upper and lower sides of the first side wall 211, and the side wall located on the upper side is the second side wall 212 provided with the first screw mounting hole 213, and the first protective bracket 3 is specifically located in the inner direction of the first screw mounting hole 213, so that the first protective bracket 3 can separate the area of ​​the first screw mounting hole 213 into an area independent of the electrical components, so that after the screw is installed, the end of the screw is in the independent area, protecting the electrical components inside the electrical box 2 from being scratched.

[0034] For further information, see Appendix Figure 6 , 7As shown, the first side wall 211 is provided with an insertion plate 215 extending toward the outside of the opening, the number of the insertion plates 215 is not limited, and the shape and size of each insertion plate 215 are also different, and the first protective bracket 3 is provided with a slot 33 corresponding to the insertion plate 215, the slot 33 corresponds to the number of the insertion plates 215 one by one, and for each insertion plate 215, the shape of the slot 33 is adapted to the insertion plate 215, in this way, the installation position of the first protective bracket 3 on the first side wall 211 can be quickly found, thereby improving the assembly efficiency.

[0035] The first protective bracket 3 in this embodiment specifically includes a first plate body 31 and a second plate body 34, which are connected and bent at 90 degrees, the first plate body 31 fits the inner side of the first side wall 211, and the plate surface of the second plate body 34 abuts against the end of the first side wall 211, and the slot 33 is arranged on the first plate body 31. In this embodiment, the slot 33 is arranged in the shape of: including two protrusions 32 arranged on the first plate body 31, and a pair of grooves are opened in the opposite directions of the two protrusions 32, namely the slot 33. Of course, the slot 33 can also be in other forms, such as directly adding a layer of plate on the first plate body 31, the added layer of plate is opposite to the plate surface of the first plate body 31 and has a gap, and the gap between the layer of plate and the first plate body 31 forms the slot 33.

[0036] Furthermore, the present application also provides a first bayonet 216 on the plug board 215, and a first card body 311 is provided on the corresponding first plate body 31. The first card body 311 includes a connecting end connected to the first plate body 31 and a free end away from the connecting end, so that the first card body 311 can elastically move in a direction perpendicular to the first plate body 31, and a clamping head corresponding to the first bayonet 216 is provided at a position close to the free end of the first card body 311. When the first protective bracket 3 is inserted from the slot 33, the first card body 311 is deformed in a direction perpendicular to the first plate body 31 by force. When the first bayonet 216 of the plug board 215 and the clamping head on the first card body 311 are aligned, the first protective bracket 3 can be fixed on the first side wall 211.

[0037] By cooperating with the first clamping opening 216 and the first clamping body 311 to be clamped and fixed, the first protective bracket 3 can be installed on the first side wall 211 more conveniently and quickly, and the fixing position can be more accurate, thereby greatly improving the installation efficiency.

[0038] Furthermore, as attached Figure 3As shown, the present application also installs a hook 5 on the first folded edge 11, and the hook 5 includes two parts, namely a bending portion 51 and a hook portion 52; the bending portion is in contact with the first folded edge 11 and is bent inwardly in the direction of the plate surface of the cover plate 1, wherein the bending portion 51 includes an extension plate 511 that is bent and extended toward the inside of the box body 21, and the bending portion is used to clamp the first folded edge 11, but such a setting will inevitably cause the extension plate 511 to extend toward the inside of the box body 21. Therefore, the present application also provides a first avoidance groove 35 for avoiding the extension plate 511 on the first protective bracket 3, that is, the first avoidance groove 35 can cover the extension plate 511 to prevent the sharp extension end of the extension plate 511 from scratching the circuit inside the electrical box 2; and the hook portion 52 is connected to the bending portion 51 and extends toward the outside of the first folded edge 11 for hanging the duct machine.

[0039] In view of the assembly form of the box body 21 and each folded edge, the part where the first protective bracket 3 abuts against the second side wall 212 in the present application is the first avoidance groove 35, and the first avoidance groove 35 is specifically located in the inner direction of the first screw mounting hole 213, so that the first avoidance groove 35 can also make the end of the screw that fixes the second side wall 212 and the second folded edge 12 be located in the first avoidance groove 35, thereby protecting the electrical components inside the electrical box 2 from being scratched.

[0040] See attached Figure 7 , 8 At the same time, the box cover 22 and the box body 21 in the present application can be fixed by a combination of a clamping connection and a screw fixation. Specifically, after the box body 21 is installed on the cover plate 1, the box cover 22 is covered on the opening of the box body 21. In order to make the overall structure simpler, the present application directly opens a third bayonet 512 on the hook 5. The third bayonet 512 is specifically located on the extension plate 511, and the extension plate 511 is in contact with the groove wall of the first avoidance groove 35, so that the first avoidance groove 35 is formed inside An escape space is formed, and the box cover 22 includes a third card body 221 adapted to the third bayonet 512. The third card body 221 is inserted into the escape space from the third bayonet 512 to initially clamp the box cover 22. In order to facilitate the third card body 221 to pass through smoothly, it is necessary to open an escape opening in the first escape groove 35 in a direction perpendicular to the first side wall 211. The third card body 221 is inserted into the escape space from the third bayonet 512 through the escape opening, and the rest of the box cover 22 is placed on the first folded edge 11.

[0041] After the box cover 22 is initially snapped onto the box body 21, screws are used to fix the box cover 22 and the box body 21 together. Specifically, a second screw mounting hole 214 for fixing the cover plate 1 with screws is also provided in the box body 21. The second screw mounting hole 214 is separately provided on a convex plate, which is connected to the second side wall 212 and is bent once parallel to the opening. After the box cover 22 is installed in place, the box cover 22 contacts the convex plate, and screws can be used to pass through the box cover 22 and the second screw mounting hole 214 to fix the box cover 22 to the box body 21.

[0042] Therefore, based on the above-mentioned arrangement, the present application further provides a second protective bracket 4 at the second screw mounting hole 214, wherein the second protective bracket 4 is clamped and fixed with the second side wall 212, specifically: a pair of second bayonet holes 45 are opened on the second side wall 212, and a second card body 41 adapted to the second bayonet holes 45 is provided on the second protective bracket 4, wherein the two bayonet holes and the second card body 41 mainly play a positioning role; the end face of the second protective bracket 4 is tightly attached to the end face of the box body 21 corresponding to the opening, and a screw mounting position is also provided on the end face of the second protective bracket 4, and the second protective bracket 4 and the box body 21 are further fixed by screws to ensure that the bracket will not loosen when it is installed in the electrical box 2 and the single material of the electrical box 2 is transported and placed; here, since the insertion direction of the screw is from the end face of the box body 21 to the outside, the end of the screw is not located in the box body 21, and will not cause damage to the wire body inside the box body 21.

[0043] Since the components inside the box body 21 need to be connected to the outside, a wire-passing opening is opened on the box cover 22. Therefore, in this embodiment, a convex plate with a second screw mounting hole 214 is also arranged at the wire-passing opening, and a second protective bracket 4 is adopted and directly installed at the wire-passing opening; wherein the second protective bracket 4 includes a supporting portion 42, a transition surface 43 and a yielding portion 44; the supporting portion 42 is supported by the end surface of the box body 21, and the screw mounting position is located on the supporting portion 42, the transition surface 43 is connected to the supporting portion 42 and is inclined toward the opening direction, and the yielding portion 44 is connected to the transition surface 43 perpendicular to the opening direction, and the yielding portion 44 is connected to the transition surface 43 during installation. 44 is attached to the second side wall 212; the yielding portion 44 mainly includes three parts, namely two extension columns 46 arranged at intervals and an extended baffle 47, a wire groove is formed between the extension columns 46 and the extension columns 46, and between the extension columns 46 and the baffle 47, and the baffle 47 and the second side wall 212 together form a second avoidance groove 48 for avoiding screws. In the accompanying drawings, since the baffle 47 is arranged at the connection between the side walls, the cross-section of the baffle 47 is L-shaped after one bending, and the two ends are respectively abutted against the two side walls to form an independent chamber for avoiding screws, and the convex plate is arranged on the independent chamber formed by the baffle 47 and the side wall of the box body 21.

[0044] By placing the second protective bracket 4, the screws for installing the box cover 22 and the box body 21 can be well blocked in an independent chamber, the screws and the lines are separated, and the ends of the screws are prevented from contacting the lines and causing damage to the lines; and the second protective bracket 4 is directly arranged at the line passing opening to form a line passing groove, which can, on the one hand, form a chamber to avoid the screws, and on the other hand, can guide the lines to avoid clutter and prevent the lines from loosening.

[0045] The present invention provides a protective bracket at the screw mounting hole on the inner side of the box body 21 to cover the screw mounting hole to form an independent chamber, which can provide good protection for various screws used to install the box cover 22 and the box body 21 itself. At the same time, various sharp sheet metal parts extending into the interior of the box body 21 can also be blocked in the independent chamber to avoid cutting lines caused by these structures.

[0046] The present invention also proposes a duct unit and an air conditioning system. The air conditioning system includes the electrical box 2 proposed in the present application. In one embodiment, the structure of the electrical box 2 installed in the air conditioning system is specifically a duct unit.

[0047] The above specific embodiments are only used to illustrate the concept of the present invention. A person skilled in the art may make various modifications and changes based on the concept of the present invention, and these modifications and changes are all included in the protection scope of the present invention.

Claims

1. An electrical box, comprising a box body and a box cover, wherein the box body comprises screw mounting holes on its side wall for respectively fixing the box body and the box cover, and the box body and an air conditioning system, wherein: The electrical box further comprises: a protective bracket covering each of the screw mounting holes on the side wall inside the box body; the air conditioning system comprises a cover plate, and the cover plate is provided with adjacent first folded edges and second folded edges; The box body includes an opening, and the box cover is arranged on the opening. The box body includes a first side wall and a second side wall that are adjacent to each other, and the second side wall is fitted and fixed with the second folded edge. A first screw mounting hole for screwing the second folded edge is opened on the second side wall, and a first protective bracket is provided at the opening of the first side wall, which is located near the center side of the box body near the first screw mounting hole, and the first protective bracket is fitted with the first folded edge; a hook is provided on the first folded edge, and the hook includes: a bent portion fitted and fixed with the first folded edge, and a hook portion connected to the bent portion and extending toward the outside of the first folded edge; the bent portion includes an extension plate extending toward the inside of the box body, and the first protective bracket includes a first avoidance groove for avoiding the extension plate; the first avoidance groove is connected to the second side wall, and the first screw mounting hole is arranged in the first avoidance groove.

2. The electrical box according to claim 1, characterized in that: The extension plate is provided with a third bayonet, and the box cover comprises a third card body passing through the first avoidance groove and engaging with the third bayonet.

3. The electrical box according to claim 1, characterized in that: The first side wall includes an inserting plate extending toward the outside of the opening, the first protective bracket is provided with a slot, and the inserting plate and the slot are clamped and fixed.

4. The electrical box according to claim 1, characterized in that: The box body is also provided with a second screw mounting hole for fixing the cover plate with screws, and the protective bracket includes a second protective bracket covering the second screw mounting hole.

5. The electrical box according to claim 4, characterized in that: The cover plate is provided with a wire passing opening, and the second protective bracket is provided with a wire passing groove connected to the wire passing opening.

6. The electrical box according to claim 4, characterized in that: The second protective bracket is fixed to the box body by clamping, and / or the second protective bracket is fixed to the box body by screws.

7. The electrical box according to claim 6, characterized in that: The second side wall is provided with a second bayonet, the second protective bracket is provided with a second card body adapted to the second bayonet, and the end surface of the box body opposite to the opening is screwed to the second protective bracket.

8. Duct machine, characterized in that, The duct machine comprises an electrical box as described in any one of claims 1 to 7.

9. An air conditioning system, characterized in that The air conditioning system includes the duct unit described in claim 8.

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