Pre-embedded power box

Abstract

The invention relates to the technical field of electric power boxes, in particular to a pre-embedded electric power box which comprises a pre-embedded outer shell, a flame-retardant inner shell arranged in the pre-embedded outer shell, an electric power box arranged in the flame-retardant inner shell, a protective cover arranged between two rotating shaft seats, a counter bore formed in the position, corresponding to a groove, of the top of the flame-retardant inner shell, a screw rod arranged in the counter bore, and a cross-shaped clamping plate arranged in the groove. An elastic clamping block is arranged at the bottom of the cross-shaped clamping plate; according to the pre-embedded power box, the pre-embedded outer shell is arranged and tightly attached to the wall body under the cooperation of the baffle, the flame-retardant inner shell is matched with the screw and the cross clamping block, the cross clamping plate moves up and down by rotating the screw, and under the cooperation of the elastic clamping plate, the whole power box can be clamped to the wall body, and the installation stability is improved; the power box is in plug-in fit with the trapezoidal groove through the trapezoidal block and is fixed through the grub screw, the installation stability of the power box and the flame-retardant inner shell is improved, the interior of the power box is matched with the fixing plate, and the circuit breaker can be rapidly installed under the cooperation of the limiting groove.

Description

Technical Field

[0001] The present invention relates to the technical field of power boxes, and in particular to a pre-buried power box. Background Art

[0002] A power box is a device used for power distribution, usually including housing, circuit breaker, fuse, current transformer, contactor, relay, motor protector and other components; the power box is usually installed on the wall for household power distribution and safety protection;

[0003] The invention with announcement number CN217087427U discloses a pre-embedded power box for BIM building model, including a wall, a power box and the pre-embedded box, the inner groove of the power box is installed with a power component, the pre-embedded box is embedded in the wall, the power box and the pre-embedded box are meshed and plugged, the side walls on opposite sides of the power box are provided with rod grooves, the rod grooves penetrate and mesh with a limit column for sliding connection, the inner arc wall of the pre-embedded box relative to the limit column is provided with a limit groove, the limit column is meshed with the limit groove and plugged and connected, and one end of the limit column close to the inner groove of the power box is rotatably connected with a pull plate;

[0004] The above technical solution, by designing the directly pre-buried power box to be pre-buried relative supporting metal parts, and then installing the power box, can not only effectively improve the strength of the power box, but also facilitate the subsequent rapid disassembly, maintenance or replacement of the power box, and does not require bolt connection, and will not cause irreversible damage to the wall; however, the pre-buried power box cannot increase the stability of the installation, and the circuit breaker installed inside is not convenient to be quickly removed and replaced, and the power box does not have flame retardant properties, which reduces the damage to the power box caused by a short circuit, thereby causing damage to the wall. Summary of the invention

[0005] The object of the present invention is to provide a pre-buried power box to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A pre-embedded power box comprises a pre-embedded shell, a flame-retardant inner shell is arranged inside the pre-embedded shell, a power box is arranged inside the flame-retardant inner shell, a limiting ring is arranged in the middle of the top of the pre-embedded shell, a rotating shaft seat is symmetrically arranged at the rear end of the top of the limiting ring, a protective cover is arranged between the two rotating shaft seats, a transparent plate is arranged on the upper surface of the protective cover, a rotating shaft is arranged at the end of the protective cover corresponding to the rotating shaft seat, a first wire passing groove is symmetrically arranged at the rear end of the pre-embedded shell, grooves are arranged on the outer walls on both sides of the flame-retardant inner shell at positions corresponding to the through groove, a sliding groove is arranged on the side wall of the groove, a countersunk hole is arranged at the top of the flame-retardant inner shell at positions corresponding to the groove, a screw is arranged in the countersunk hole, a cross card is arranged in the groove, a screw hole is arranged on the top of the cross card, an elastic card block is arranged on the bottom of the cross card, a notch is arranged on the left end surface of the power box, a fixing plate is symmetrically arranged inside the power box, a limiting groove communicating with the outside is arranged at the left end of the fixing plate, and a third wire passing groove is symmetrically arranged at the rear end of the power box.

[0008] Preferably, a baffle is provided at the top edge of the embedded shell, the limiting ring is fixed to the baffle by welding, and the rotating shaft seat is fixed to the limiting ring by welding.

[0009] In the present invention, with the cooperation of the baffle, the contact surface between the top of the embedded shell and the wall surface is increased, and with the cooperation of the limiting ring, it is helpful for the protective cover to fit with the limiting ring, thereby increasing the protection of the interior of the embedded shell.

[0010] Preferably, the transparent plate is bonded and fixed to the protective cover at its edge, the transparent plate and the protective cover are an integrally formed structure, the rotating shaft is rotatably connected to the rotating shaft seat, and a protrusion is provided on the upper surface of the protective cover near the front end.

[0011] In the present invention, the transparent plate is made of polyethylene material, which is convenient for outsiders to observe the installation status of the internal circuit breaker through the transparent plate. With the cooperation of the protrusions, the force point is increased, which is helpful for the opening or closing operation of the protective cover.

[0012] Preferably, the width of the inner wall of the embedded outer shell is adapted to the width of the outer wall of the flame retardant inner shell, a second wire groove is provided on the rear end face of the flame retardant inner shell, the width of the outer wall of the second wire groove is adapted to the width of the inner wall of the first wire groove, and the width of the inner wall of the groove is adapted to the width of the inner wall of the through groove.

[0013] In the present invention, with the cooperation of the flame-retardant inner shell, the damage to the embedded outer shell caused by combustion due to internal short circuit is reduced, and with the cooperation of the first wire duct and the second wire duct, it is helpful for external cables to pass into the interior and be electrically connected to the corresponding circuit breaker.

[0014] Preferably, the screw is rotatably connected to the countersunk hole, and the screw extends into the groove and is rotatably connected to the bottom of the groove, the two ends of the cross clamp are slidably matched with the slide groove, the screw is threadedly connected to the screw hole, the top of the elastic clamp is welded and fixed to the outer wall of the cross clamp, and the bottom of the elastic clamp is welded and fixed to the bottom of the groove.

[0015] In the present invention, the screw rod rotates in the countersunk hole, and the screw rod is threadedly connected to the screw hole, and the cross clamping plate slides up and down in the two slide grooves. With the cooperation of the elastic clamping block, it helps the elastic clamping block to pass through the through groove, so as to realize the clamping cooperation between the embedded shell and the inner wall of the installation hole on the corresponding wall, thereby increasing the stability of the installation. The cross clamping plate moves downward, and the elastic clamping block protrudes outward, thereby increasing the friction with the wall.

[0016] Preferably, the width of the outer wall of the power box is adapted to the width of the inner wall of the flame retardant inner shell, and ladder blocks are provided on the front and rear side walls of the power box, mounting holes are provided on the tops of the ladder blocks, and flat head screws are provided in the mounting holes, and ladder grooves are provided on the inner wall of the flame retardant inner shell corresponding to the ladder blocks, and threaded grooves are provided at the bottoms of the ladder grooves.

[0017] In the present invention, the trapezoidal block is plugged into the trapezoidal groove, and the flat head screw passes through the mounting hole and is threadedly connected to the threaded groove, thereby achieving installation stability between the power box and the flame-retardant inner shell.

[0018] Preferably, both ends of the fixing plate are respectively fixed to the power box by welding, the limiting groove on the fixing plate passes through the power box, the corresponding circuit breaker is installed between the two limiting grooves, and the front and rear inner walls of the power box are symmetrically provided with handle grooves.

[0019] In the present invention, the cooperation of the limit groove helps the plugging and cooperation of the clamping block on the external circuit breaker with the limit groove, which helps the stability of the installation of the circuit breaker and the fixing plate. The cooperation of the handle groove provides a fulcrum, which helps to remove and replace the power box.

[0020] Preferably, the width of the inner wall of the third wire passing groove is adapted to the width of the inner wall of the second wire passing groove, the top of the flat head screw is flush with the top of the mounting hole, and the flat head screw passes through the mounting hole and is threadedly connected to the thread groove.

[0021] In the present invention, the cooperation of the third wire duct helps to electrically connect external cables with the internal circuit breaker through the third wire duct, and the flat head screw is flush with the mounting hole, thereby increasing the aesthetic appearance.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention sets an embedded outer shell and fits it tightly with the wall with the cooperation of the baffle. The flame-retardant inner shell is equipped with a screw and a cross clamp. The cross clamp is moved up and down by rotating the screw. With the cooperation of the elastic clamp, it helps to clamp the whole on the wall, increasing the stability of the installation. The power box is plug-in-fitted with the ladder block and the ladder groove, and is fixed with a flat head screw, which increases the installation stability of the power box and the flame-retardant inner shell. The inside of the power box is equipped with a fixed plate, which helps to quickly install the circuit breaker with the cooperation of the limit groove.

[0024] 2. The present invention provides a protective cover with a transparent plate, which is rotatably connected to the limit ring, thereby achieving internal protection coordination. The cooperation of the first wire groove, the second wire groove and the third wire groove helps external cables to pass through the pre-buried outer shell and extend to the inside of the power box, thereby achieving electrical connection of the corresponding circuit breaker. The cooperation of the handle groove helps to remove and replace the power box, provides a fulcrum, and disassembles the flat head screws, which helps to remove and replace the power box from the inside of the flame-retardant inner shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the protective cover of the present invention in an open state;

[0027] Figure 3 It is a schematic diagram of the combined structure of the embedded housing and the protective cover of the present invention;

[0028] Figure 4 It is a schematic diagram of the explosion structure of the embedded outer shell and the flame-retardant inner shell of the present invention;

[0029] Figure 5 It is a schematic diagram of the power box frame structure of the present invention.

[0030] The meaning of each number in the figure is:

[0031] 1. Embedded housing; 10. Baffle; 11. Limiting ring; 12. Rotating shaft seat; 13. Through slot; 14. First wire slot;

[0032] 2. Protective cover; 20. Transparent plate; 21. Rotating shaft; 22. Bump;

[0033] 3. Flame retardant inner shell; 30. Second wire groove; 31. Groove; 310. Slide groove; 32. Countersunk hole; 320. Screw; 33. Cross clamp; 330. Screw hole; 331. Elastic clamp; 34. Trapezoidal groove; 340. Threaded groove;

[0034] 4. Power box; 40. Fixing plate; 400. Limiting groove; 41. Notch; 42. Ladder block; 420. Mounting hole; 421. Flat head screw; 43. Third wire slot; 44. Handle slot. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figure 1-Figure 5 , this embodiment provides a technical solution:

[0037] A pre-embedded power box comprises a pre-embedded outer shell 1, a flame retardant inner shell 3 is arranged inside the pre-embedded outer shell 1, a power box 4 is arranged inside the flame retardant inner shell 3, a limiting ring 11 is arranged at the middle of the top of the pre-embedded outer shell 1, a baffle 10 is arranged at the top edge of the pre-embedded outer shell 1, the limiting ring 11 is welded and fixed to the baffle 10, and a rotating shaft seat 12 is welded and fixed to the limiting ring 11.

[0038] In the present invention, the baffle 10 increases the contact surface between the top of the embedded shell 1 and the wall, and the limiting ring 11 helps the protective cover 2 to fit with the limiting ring 11, thereby increasing the protection of the interior of the embedded shell 1.

[0039] Furthermore, the transparent plate 20 is bonded and fixed to the protective cover 2 at its edge, forming an integral structure with the protective cover 2 , the rotating shaft 21 is rotatably connected to the rotating shaft seat 12 , and a protrusion 22 is provided on the upper surface of the protective cover 2 near the front end.

[0040] In the present invention, the transparent plate 20 is made of polyethylene material, which is convenient for outsiders to observe the installation status of the internal circuit breaker through the transparent plate 20. With the cooperation of the protrusion 22, the force point is increased, which is helpful for the opening or closing operation of the protective cover 2.

[0041] Specifically, a rotating shaft 21 is provided at the end of the protective cover 2 corresponding to the rotating shaft seat 12, a first wire passing groove 14 is symmetrically provided at the rear end of the embedded outer shell 1, and grooves 31 are opened on the outer walls on both sides of the flame retardant inner shell 3 corresponding to the through groove 13. The width of the inner wall of the embedded outer shell 1 is adapted to the width of the outer wall of the flame retardant inner shell 3, and a second wire passing groove 30 is opened on the rear end surface of the flame retardant inner shell 3. The width of the outer wall of the second wire passing groove 30 is adapted to the width of the inner wall of the first wire passing groove 14, and the width of the inner wall of the groove 31 is adapted to the width of the inner wall of the through groove 13.

[0042] In the present invention, with the cooperation of the flame-retardant inner shell 3, the damage to the embedded outer shell 1 caused by combustion due to internal short circuit is reduced, and with the cooperation of the first wire duct 14 and the second wire duct 30, it is helpful for external cables to pass into the interior and be electrically connected to the corresponding circuit breaker.

[0043] It should be noted that a slide groove 310 is opened on the side wall of the groove 31, a countersunk hole 32 is opened at the top of the flame retardant inner shell 3 corresponding to the groove 31, a screw 320 is arranged in the countersunk hole 32, a cross clamp 33 is arranged in the groove 31, a screw hole 330 is opened at the top of the cross clamp 33, an elastic clamp block 331 is arranged at the bottom of the cross clamp 33, the screw 320 is rotatably connected to the countersunk hole 32, and the screw 320 extends into the groove 31 and is rotatably connected to the bottom of the groove 31, both ends of the cross clamp 33 are slidably matched with the slide groove 310, the screw 320 is threadedly connected to the screw hole 330, the top of the elastic clamp block 331 is welded and fixed to the outer wall of the cross clamp 33, and the bottom of the elastic clamp block 331 is welded and fixed to the bottom of the groove 31.

[0044] In the present invention, the screw rod 320 rotates in the counterbore 32, and the screw rod 320 is threadedly connected with the screw hole 330, and the cross clamping plate 33 slides up and down in the two slide grooves 310. With the cooperation of the elastic clamping block 331, it helps the elastic clamping block 331 to pass through the through groove 13, so as to realize the clamping cooperation between the embedded shell 1 and the inner wall of the installation hole on the corresponding wall, thereby increasing the stability of the installation. The cross clamping plate 33 moves downward, and the elastic clamping block 331 protrudes outward, thereby increasing the friction with the wall.

[0045] Furthermore, a notch 41 is provided on the left end surface of the power box 4, a fixing plate 40 is symmetrically provided inside the power box 4, a limiting groove 400 communicating with the outside is provided at the left end of the fixing plate 40, and a third wire passing groove 43 is symmetrically provided at the rear end of the power box 4.

[0046] Secondly, the screw 320 is rotatably connected to the countersunk hole 32, and the screw 320 extends into the groove 31 and is rotatably connected to the bottom of the groove 31. The two ends of the cross clamp 33 slide with the slide groove 310, the screw 320 is threadedly connected to the screw hole 330, the top of the elastic clamp 331 is welded and fixed to the outer wall of the cross clamp 33, and the bottom of the elastic clamp 331 is welded and fixed to the bottom of the groove 31.

[0047] In the present invention, the screw rod 320 rotates in the counterbore 32, and the screw rod 320 is threadedly connected with the screw hole 330, and the cross clamping plate 33 slides up and down in the two slide grooves 310. With the cooperation of the elastic clamping block 331, it helps the elastic clamping block 331 to pass through the through groove 13, so as to realize the clamping cooperation between the embedded shell 1 and the inner wall of the installation hole on the corresponding wall, thereby increasing the stability of the installation. The cross clamping plate 33 moves downward, and the elastic clamping block 331 protrudes outward, thereby increasing the friction with the wall.

[0048] Specifically, both ends of the fixing plate 40 are respectively welded to the power box 4 , the limiting groove 400 on the fixing plate 40 passes through the power box 4 , the corresponding circuit breaker is installed between the two limiting grooves 400 , and the front and rear inner walls of the power box 4 are symmetrically provided with handle grooves 44 .

[0049] In the present invention, the cooperation of the limit groove 400 helps the block on the external circuit breaker to be plugged into the limit groove 400, which helps the stability of the installation of the circuit breaker and the fixing plate 40. The cooperation of the handle groove 44 provides a fulcrum, which helps to remove and replace the power box 4.

[0050] Furthermore, the width of the inner wall of the third wire groove 43 matches the width of the inner wall of the second wire groove 30 , the top of the flat head screw 421 is flush with the top of the mounting hole 420 , and the flat head screw 421 passes through the mounting hole 420 and is threadedly connected to the thread groove 340 .

[0051] In the present invention, the cooperation of the third wire trough 43 helps to electrically connect external cables with the internal circuit breaker through the third wire trough 43, and the flat head screw 421 is flush with the mounting hole 420, which increases the aesthetic appearance.

[0052] When the embedded power box of this embodiment is in use, the user first rotates the screw rod 320 and the counterbore 32 to connect the screw rod 320 and the flame-retardant inner shell 3, and the cross clamping plate 33 with the elastic clamping block 331 is slidably matched with the slide groove 310, and then the flame-retardant inner shell 3 is bonded and fixed to the embedded outer shell 1, and the protective cover 2 with the transparent plate 20 is rotatably connected to the shaft seat 12 on the shaft 21 and the limiting ring 11 to protect the inside of the embedded outer shell 1, and then the fixing plate 40 with the limiting groove 400 is welded and fixed to the power box 4, and the circuit breaker with the clamping block is installed between the two fixing plates 40 from the notch 41 with the cooperation of the notch 41, and the ladder block 42 is plugged and matched with the ladder groove 34, and the flat head screw 421 passes through the mounting hole 420 and is threadedly connected with the thread groove 340 to achieve stable installation and matching of the power box 4 and the flame-retardant inner shell 3;

[0053] The external connection cables pass through the first wire groove 14, the second wire groove 30, and the third wire groove 43 in sequence and are electrically connected to the circuit breaker between the two fixed plates 40. When the circuit breaker needs to be replaced, the flat head screw 421 is disassembled and taken out. With the cooperation of the handle groove 44, it is helpful to take out and replace the power box 4. The circuit breaker that needs to be replaced is taken out and replaced from the notch 41. With the cooperation of the flame-retardant inner shell 3, internal short circuits are avoided, which cause combustion and damage to the embedded shell 1, avoid overall replacement, waste of resources, and reduce damage to the wall where the embedded shell 1 is located. The overall combination is convenient to install. The screw 320 is manually turned by an external screwdriver to achieve the elastic block 331 to fit with the wall, thereby increasing the stability of the installation of the embedded shell 1 and the wall.

Claims

1. A pre-buried power box, comprising a pre-buried housing (1), characterized in that: A flame retardant inner shell (3) is provided inside the embedded outer shell (1), a power box (4) is provided inside the flame retardant inner shell (3), a limiting ring (11) is provided at the middle of the top of the embedded outer shell (1), a rotating shaft seat (12) is symmetrically provided at the rear end of the top of the limiting ring (11), a protective cover (2) is provided between the two rotating shaft seats (12), a transparent plate (20) is provided on the upper surface of the protective cover (2), a rotating shaft (21) is provided at the end of the protective cover (2) corresponding to the rotating shaft seat (12), a first wire passing groove (14) is symmetrically provided at the rear end of the embedded outer shell (1), grooves (31) are provided on the outer walls of both sides of the flame retardant inner shell (3) corresponding to the through grooves (13), and the grooves (31) ) is provided with a slide groove (310) on the side wall, a countersunk hole (32) is provided at the top of the flame-retardant inner shell (3) corresponding to the groove (31), a screw (320) is provided in the countersunk hole (32), a cross clamping plate (33) is provided in the groove (31), a screw hole (330) is provided at the top of the cross clamping plate (33), an elastic clamping block (331) is provided at the bottom of the cross clamping plate (33), a notch (41) is provided on the left end surface of the power box (4), a fixing plate (40) is symmetrically provided inside the power box (4), a limiting groove (400) communicating with the outside is provided at the left end of the fixing plate (40), and a third wire passing groove (43) is symmetrically provided at the rear end of the power box (4).

2. The embedded power box according to claim 1, characterized in that: A baffle (10) is provided at the top edge of the embedded housing (1), the limiting ring (11) is fixedly welded to the baffle (10), and the rotating shaft seat (12) is fixedly welded to the limiting ring (11).

3. The embedded power box according to claim 1, characterized in that: The transparent plate (20) is bonded and fixed to the protective cover (2) at its edge, and the transparent plate (20) and the protective cover (2) are an integrally formed structure. The rotating shaft (21) is rotatably connected to the rotating shaft seat (12), and a protrusion (22) is provided on the upper surface of the protective cover (2) near the front end.

4. The embedded power box according to claim 1, characterized in that: The width of the inner wall of the embedded outer shell (1) matches the width of the outer wall of the flame-retardant inner shell (3); a second wire-passing groove (30) is provided on the rear end surface of the flame-retardant inner shell (3); the width of the outer wall of the second wire-passing groove (30) matches the width of the inner wall of the first wire-passing groove (14); and the width of the inner wall of the groove (31) matches the width of the inner wall of the through groove (13).

5. The embedded power box according to claim 1, characterized in that: The screw rod (320) is rotatably connected to the counterbore (32), and the screw rod (320) extends into the groove (31) and is rotatably connected to the bottom of the groove (31). Both ends of the cross clamping plate (33) are slidably matched with the slide groove (310), the screw rod (320) is threadedly connected to the screw hole (330), the top of the elastic clamping block (331) is welded and fixed to the outer wall of the cross clamping plate (33), and the bottom of the elastic clamping block (331) is welded and fixed to the bottom of the groove (31).

6. The embedded power box according to claim 1, characterized in that: The width of the outer wall of the power box (4) is matched with the width of the inner wall of the flame retardant inner shell (3); the front and rear side walls of the power box (4) are both provided with ladder blocks (42); the top of the ladder blocks (42) are provided with mounting holes (420); the mounting holes (420) are both provided with flat head screws (421); the inner wall of the flame retardant inner shell (3) is provided with ladder grooves (34) at positions corresponding to the ladder blocks (42); the bottom of the ladder grooves (34) is provided with threaded grooves (340).

7. The embedded power box according to claim 1, characterized in that: The two ends of the fixing plate (40) are respectively welded to the power box (4), the limiting groove (400) on the fixing plate (40) passes through the power box (4), the corresponding circuit breaker is installed between the two limiting grooves (400), and the front and rear inner walls of the power box (4) are symmetrically provided with handle grooves (44).

8. The embedded power box according to claim 6, characterized in that: The width of the inner wall of the third wire groove (43) matches the width of the inner wall of the second wire groove (30), the top of the flat head screw (421) is flush with the top of the mounting hole (420), and the flat head screw (421) passes through the mounting hole (420) and is threadedly connected to the thread groove (340).

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