Controller box capable of improving reliability

Abstract

The utility model relates to the field of compressor controller box bodies, in particular to a controller box capable of improving reliability, which comprises a box body and a cover plate connected with the box body, a circuit mainboard is arranged on one surface, facing the open end of the box body, of the cover plate, and a plurality of radiating strips are arranged on one surface, far away from the open end of the box body, of the cover plate; a sealing gasket is arranged between the opening end face of the box body and the cover plate; the side surface of the box body is provided with a first box wire clamp, and the back surface of the box body is provided with a second box wire clamp. The controller box not only has a heat dissipation function, but also has a certain sealing and waterproof function, and the box wire clamp assembly is arranged on the side surface of the first box body, so that a wire harness is fixed, insects can be prevented from entering the first box body to damage a circuit mainboard, and the stability of a controller is improved.

Description

Technical Field

[0001] The utility model relates to the field of compressor controller boxes, in particular to a controller box with improved reliability. Background Art

[0002] Commercial variable-frequency compressors are gradually being promoted in the market. The application environment of commercial refrigeration appliances is relatively complex, such as outdoor vending machines, kitchen freezers, etc. The operating environment temperature is high, and moisture enters the cabinet. At the same time, the controller of the commercial variable-frequency compressor has relatively large power and generates relatively large heat, which makes it difficult to ensure the reliability of the controller of the variable-frequency compressor. The controllers of the compressors in the existing technology either have very good heat dissipation performance but no waterproofing, or have very good sealing performance but cannot guarantee the heat dissipation performance, making it difficult to adapt to the above working conditions. Summary of the Invention

[0003] The purpose of the present invention is to provide a controller box with improved reliability in view of the problems existing in the prior art.

[0004] To achieve the above-mentioned objectives, the invention adopts the following technical solutions: a controller box with improved reliability, comprising a box body and a cover plate connected to the box body, wherein a circuit main board is provided on a side of the cover plate facing the open end of the box body, and a plurality of heat dissipation strips are provided on a side of the cover plate away from the open end of the box body; a sealing gasket is provided between the open end surface of the box body and the cover plate; a first box wire clamp is provided on the side of the box body, and a second box wire clamp is provided on the back of the box body.

[0005] By providing a sealing gasket between the open end face of the box body and the cover plate, it is possible to effectively prevent water vapor or water droplets from entering the shell through the gap between the box body and the cover plate and affecting the circuit main board; by providing a plurality of heat dissipation strips on one side of the cover plate and the circuit main board on the other side, the heat dissipation strips can increase the heat dissipation area of ​​the cover plate, and can effectively dissipate the heat generated by the circuit main board during operation to the outside through the cover plate and the heat dissipation strips; a first box wire clamp is provided on the side of the box body, and a second box wire clamp is provided on the back of the box body. The two box wire clamps press and fix the wiring harness and seal the wiring harness path passing through the box wire clamps, thereby preventing small insects from entering the shell and affecting the stability of the controller circuit board.

[0006] Furthermore, the open end face of the box body is provided with a concave positioning structure, and the positioning structure includes a step end face and a positioning protrusion arranged around the step end face; the cover plate is covered on the step end face, and the sealing gasket is arranged between the step end face and the cover plate; a flange is provided at one part of the positioning protrusion toward the cover plate, and the cover plate can be removably inserted between the flange and the step end face.

[0007] The cover plate is connected to the shell by fasteners. An inwardly concave positioning structure is provided on the open end surface of the box body, and a positioning protrusion constrains the periphery of the cover plate, thereby resisting the shear force of the cover plate on the fasteners through the positioning protrusion, thereby reinforcing the connection strength between the cover plate and the shell, preventing the box body and the cover plate from being easily disconnected in the event of an accident during normal use of the controller, and protecting the circuit board.

[0008] Furthermore, drainage grooves are provided on the step end surfaces of the two opposite side walls of the box body, and the drainage grooves are located between the sealing gasket and the positioning protrusions. A corresponding drainage port connected to the drainage grooves is opened on the box body.

[0009] By providing drainage grooves on the step end surfaces of the two opposite side walls of the box body, the accumulated water between the positioning protrusion and the sealing gasket can be discharged in time through the drainage grooves, preventing the accumulated water from accumulating between the positioning protrusion and the sealing gasket for a long time and corroding the box body, cover plate and sealing gasket, thereby affecting the practical life of the controller.

[0010] Furthermore, the first box wire clamp includes a first opening frame arranged on the outer side of the box body, and a first side cover covering the first opening frame; the first box wire clamp includes a first wire clamping assembly for fixing the wiring harness, and a first fastening assembly for adjusting and fixing the covering height of the first opening frame and the first side cover; the side wall of the first opening frame and the first side cover are provided with a first wire outlet, and the first wire outlet corresponds to the outlet end of the first wire clamping assembly.

[0011] Through the cooperation between the first wire clamping assembly and the first fastening assembly, the wire harness can be compressed and fixed while the wire harness path can be sealed inside the first wire clamping assembly to prevent small insects from entering the first box wire clamp and then entering the box body to damage the circuit board and affect the stability of the circuit board.

[0012] Furthermore, the first wire clamping assembly includes a wire routing trough provided in the first opening frame, a plurality of groups of strip-shaped protrusions are provided on the inner wall of the wire routing trough, and a plurality of groups of wire pressing plates are provided on the first side cover to match the strip-shaped protrusions; the wire routing trough outlet corresponds to the first wire outlet.

[0013] The wire pressing plate is slidably engaged with the strip protrusion in the wiring trough, and the wire pressing plate can slide in the wiring trough to place the wiring harness in the wiring trough. The wire pressing plate is slidably engaged with the strip protrusion, and the top of the wire pressing plate is against the wiring harness. The first fastening component is then used to adjust the covering height of the first side cover and the first opening frame so that the wire pressing plate presses the wiring harness and seals the wiring trough to achieve final fixation. The corresponding number of wire harnesses determines the covering height of the first opening frame and the first side cover. The covering height of more wire harnesses is high and the covering height of less wire harnesses is low. After the wire harness is placed, the first fastening component is used to adjust the covering height of the first opening frame and the first side cover to finally fix it, which can adapt to the fixation of the total diameter of different wire harnesses.

[0014] Furthermore, the first fastening assembly includes a first cylindrical protrusion arranged at one end of the wiring trough away from the outlet, a threaded hole is opened on the first cylindrical protrusion, and the first side cover is provided with a countersunk hole adapted to the threaded hole.

[0015] The bolt is connected to the threaded hole of the first cylindrical protrusion through the countersunk hole, and the covering height of the first opening frame and the first side cover is adjusted by adjusting the number of rotations of the bolt, thereby cooperating with the first wire clamping assembly to compress wire harnesses of different wire diameters.

[0016] Furthermore, the second box wire clamp includes a second opening frame arranged on the back of the box body, and a second side cover covering the second opening frame; the second box wire clamp includes a second wire clamping assembly for fixing the wiring harness and a second fastening assembly for adjusting and fixing the covering height of the second opening frame and the second side cover, and a second wire outlet is provided at the side wall of the second opening frame and the second side cover corresponding to the outlet of the second wire clamping assembly.

[0017] Through the cooperation between the second wire clamping assembly and the second fastening assembly, the wire harness can be compressed and fixed while the wire harness path can be sealed inside the second wire clamping assembly to prevent small insects from entering the second box wire clamp and then entering the box body to damage the circuit board and affect the stability of the circuit board.

[0018] Furthermore, the second wire clamping assembly includes several first wire clamping plates parallel to each other vertically provided on the inner side wall of the second opening frame, several groups of second wire clamping plates staggered with the first wire clamping plates on the second side cover, and wire clamping grooves are provided on the top of the first wire clamping plates and the second wire clamping plates; the wire clamping grooves correspond to the second wire outlet; and back plates are provided at the bottom ends of the several groups of first wire clamping plates.

[0019] Both the first wire clamping plate and the second wire clamping plate are provided with wire clamping grooves, and the first wire clamping plate and the second wire clamping plate are staggered. When the second side cover and the second opening frame are covered, the second wire clamping plate slides and is clamped at the interval between two adjacent first wire clamping plates. The wire harness placed on the groove of the first wire clamping plate is pressed by the wire clamping groove on the second wire clamping plate. Finally, the second fastening assembly is used to adjust the covering height of the second opening frame and the second side cover to compress the wire harness.

[0020] Furthermore, the second fastening assembly includes a second cylindrical protrusion provided in the second opening frame, a threaded hole is provided on the second cylindrical protrusion, and the second side cover is provided with a boss and / or a bolt through hole that cooperates with the second cylindrical protrusion.

[0021] A second cylindrical protrusion is provided in the second opening frame, and a threaded hole is provided on the second cylindrical protrusion. The bolt is connected to the threaded bolt in the threaded hole through the bolt through the bolt through the hole on the second side cover. The covering height of the second opening frame and the second side cover is adjusted by adjusting the number of rotations of the bolt to adapt to the compression of different wiring harnesses; preferably, in order to improve the stability of the connection between the second opening frame and the second side cover, a boss is provided in the second side cover at a position corresponding to the bolt through the hole, and a cylindrical hole is opened on the boss to match the second cylindrical protrusion. The boss is sleeved with the second cylindrical protrusion, thereby improving the stability of the connection between the second opening frame and the second side cover.

[0022] Furthermore, a mounting lug is formed on the bottom wall of the box body extending outward, a bolt through hole is opened on the mounting lug, and a concave step is provided around the bolt through hole.

[0023] The box body is provided with a mounting lug in advance, and a bolt through hole is pre-opened on the mounting lug, which can be conveniently and quickly installed and connected with a preset threaded hole on a mounting bracket provided on a corresponding mechanism.

[0024] By adopting the above technical solution, compared with the prior art, the beneficial effects of the present invention are:

[0025] 1. The controller box of the present invention not only has a heat dissipation function but also has a certain sealing and waterproof function. By providing a first box wire clamp on the side of the box body and a second box wire clamp on the back of the box body, the wiring harness can be fixed while the passage path of the wiring harness can be sealed, preventing insects from entering the first box body and damaging the circuit board, thereby improving the stability of the controller.

[0026] 2. The first cover plate is positioned by the positioning protrusion, which can facilitate quick positioning and installation, improve assembly efficiency, and the positioning protrusion can effectively improve the connection strength between the cover plate and the box body, and better protect the circuit board of the box body.

[0027] 3. By providing a drainage mechanism between the positioning protrusion and the sealing gasket, the accumulated water between the positioning protrusion and the sealing gasket can be effectively discharged, preventing the accumulated water from corroding the box body, cover plate and sealing gasket, while ensuring the connection strength between the box body and the cover plate and further improving the practical life of the controller box. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is an overall structural diagram of a controller box with improved reliability in the utility model;

[0029] Figure 2 This is an exploded view of the three-dimensional structure of a controller box for improving reliability in the utility model;

[0030] Figure 3 This is a perspective view of a controller box body with improved reliability according to the present invention;

[0031] Figure 4 This utility model is a controller box with improved reliability Figure 3 Enlarged view of point A;

[0032] Figure 5 This is a perspective view of a controller box body with improved reliability according to the present invention;

[0033] Figure 6 This utility model is a controller box with improved reliability Figure 5 Enlarged view of point B;

[0034] Figure 7 This is a three-dimensional diagram of a controller box with improved reliability according to the present invention with the first side cover uncovered;

[0035] Figure 8 This is a structural diagram of a wiring trough in the first opening frame of a controller box for improving reliability according to the utility model;

[0036] Figure 9 This is a three-dimensional diagram of a first side cover of a controller box for improving reliability according to the present invention;

[0037] Figure 10 This is a structural diagram of the second opening frame of the controller box for improving reliability of the utility model;

[0038] Figure 11 This is a three-dimensional diagram of the second side cover of the controller box for improving reliability of the utility model;

[0039] In the figure: 1. box body; 2. cover plate; 3. circuit board; 4. sealing gasket; 5. heat dissipation strip; 6. positioning protrusion; 7. drainage groove; 8. drainage outlet; 9. first opening frame; 10. first side cover; 11. first wire outlet; 12. wiring groove; 13. strip protrusion; 14. wire pressing plate; 15. first cylindrical protrusion; 16. second opening frame; 17. second side cover; 18. second wire outlet; 19. first wire clamping plate; 20. second wire clamping plate; 21. wire clamping groove; 22. second cylindrical protrusion; 23. boss; 24. mounting ear piece; 25. step end face. DETAILED DESCRIPTION

[0040] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] In the description of the present invention, it should be noted that the terms "up", "down", "left", "right", "top", "bottom", "inside", "outside", "horizontal", "vertical", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0042] like Figures 1 to 11 As shown, a controller box with improved reliability includes a box body 1 and a cover plate 2 connected to the box body 1, a circuit board 3 is provided on a side of the cover plate 2 facing the open end of the box body 1, and a plurality of heat dissipation strips 5 are provided on a side of the cover plate 2 away from the open end of the box body 1; a sealing gasket 4 is provided between the open end surface of the box body 1 and the cover plate 2; a first box wire clamp is provided on the side surface of the box body 1, and a second box wire clamp is provided on the back surface of the box body 1; a plurality of threaded holes are provided on the open end surface of the box body 1, and bolt through holes are provided on the sealing gasket 4 and the cover plate 2 corresponding to the threaded holes, and the cover plate 2 and the box body 1 are fixed by threaded bolts.

[0043] By providing a sealing gasket 4 between the open end face of the box body 1 and the cover plate 2, it is possible to effectively prevent water vapor or water droplets from entering the shell through the gap between the box body 1 and the cover plate 2 and affecting the circuit main board 3; by providing a plurality of heat dissipation strips 5 on one side of the cover plate 2 and the circuit main board 3 on the other side, the heat dissipation strips 5 can increase the heat dissipation area of ​​the cover plate 2, and can effectively dissipate the heat generated by the circuit main board 3 during operation to the outside through the cover plate 2 and the heat dissipation strips 5; a first box wire clamp is provided on the side of the box body 1, and a second box wire clamp is provided on the back of the box body 1. The two box wire clamps can press and fix the wiring harness, and at the same time can further seal the wire groove, thereby preventing small insects from entering the shell and affecting the stability of the controller circuit board.

[0044] Furthermore, the open end surface of the box body 1 is provided with a concave positioning structure, which includes a stepped end surface 25 and a positioning protrusion 6 arranged around the stepped end surface 25; the cover plate 2 is covered on the stepped end surface 25, and the sealing gasket 4 is arranged between the stepped end surface 25 and the cover plate 2; a flange is provided at one end of the positioning protrusion 6 facing the cover plate 2, and the cover plate 2 is detachably inserted between the flange and the stepped end surface 25;

[0045] The cover plate 2 is connected to the shell by fasteners. An inwardly concave positioning structure is provided on the open end surface of the box body 1, and a positioning protrusion 6 is used to constrain the periphery of the cover plate 2. The positioning protrusion 6 thereby resists the shear force of the cover plate 2 on the fasteners, thereby reinforcing the connection strength between the cover plate 2 and the shell, and preventing the box body 1 and the cover plate 2 from being easily disconnected in the event of an accident during normal use of the controller, thereby protecting the circuit board 3.

[0046] Furthermore, drainage grooves 7 are provided on the step end surfaces 25 of the two opposite side walls of the box body 1. The drainage grooves 7 are located between the sealing gasket 4 and the positioning protrusions 6. A drainage port 8 communicating with the drainage grooves 7 is correspondingly opened on the box body 1.

[0047] By providing drainage grooves 7 on the step end surfaces 25 of the two opposite side walls of the box body 1, the accumulated water between the positioning protrusion 6 and the sealing gasket 4 can be discharged in time through the drainage grooves 7, preventing the accumulated water from accumulating between the positioning protrusion 6 and the sealing gasket 4 for a long time and corroding the box body 1, the cover plate 2 and the sealing gasket 4, thereby affecting the practical life of the controller.

[0048] Furthermore, the first box wire clamp includes a first opening frame 9 provided on the outer side surface of the box body 1, and a first side cover 10 covering the first opening frame 9; the first box wire clamp includes a first wire clamping assembly for fixing the wiring harness, and a first fastening assembly for adjusting and fixing the covering height of the first opening frame 9 and the first side cover 10; the side wall of the first opening frame 9 and the first side cover 10 are provided with a first wire outlet 11, and the first wire outlet 11 corresponds to the outlet end of the first wire clamping assembly.

[0049] Through the mutual cooperation between the first wire clamping assembly and the first fastening assembly, the wire harness can be compressed and fixed, and the wire harness path can be sealed inside the first wire clamping assembly to prevent small insects from entering the first box wire clamp and then entering the box body 1 to damage the circuit board and affect the stability of the circuit board.

[0050] Furthermore, the first wire clamping assembly includes a wire routing groove 12 provided in the first opening frame 9, and a plurality of groups of strip protrusions 13 are provided on the inner wall of the wire routing groove 12, and a plurality of groups of wire pressing plates 14 are provided on the first side cover 10 to match the strip protrusions 13; the outlet of the wire routing groove 12 corresponds to the first wire outlet 11.

[0051] The wire pressing plate 14 is slidably engaged with the strip protrusion in the wiring groove 12, and the wire pressing plate 14 can slide in the wiring groove 12 to place the wiring harness in the wiring groove 12, and the wire pressing plate 14 is slidably engaged with the strip protrusion, and the top of the wire pressing plate 14 is against the wiring harness, and then the first side cover 10 and the first opening frame 9 are adjusted to cover the height by the first fastening component, so that the wire pressing plate 14 presses the wiring harness and seals the wiring groove 12 to achieve final fixation; the corresponding number of wiring harnesses determines the covering height of the first opening frame 9 and the first side cover 10, the covering height of more wiring harnesses is high and the covering height of less wiring harnesses is low. After the wiring harness is placed, the first fastening component is used to adjust the covering height of the first opening frame 9 and the first side cover 10 to fix it and finally fix it, which can adapt to the fixation of the total diameter of different wiring harnesses; preferably, the minimum distance between the top wall of the first wire pressing plate 14 and an inner wall corresponding to the wiring groove 12 is 6.5mm. Through such a design, the first box wire clamp can adapt to a larger range of wire diameters.

[0052] Furthermore, the first fastening assembly includes a first cylindrical protrusion 15 provided at one end of the wiring trough 12 away from the outlet, a threaded hole is formed on the first cylindrical protrusion 15, and the first side cover 10 is provided with a countersunk hole adapted to the threaded hole.

[0053] The bolt is connected to the threaded hole of the first cylindrical protrusion 15 through the countersunk hole, and the covering height of the first opening frame 9 and the first side cover 10 is adjusted by adjusting the number of rotations of the bolt, so as to cooperate with the first wire clamping assembly to compress wire harnesses of different wire diameters; preferably, in order to facilitate actual installation, a larger opening snap recess is provided on the first side cover 10, and a smaller snap protrusion is provided on the corresponding first opening frame 9 or the box body 1, so that the first opening frame 9 and the first side cover 10 can be adjusted through the snap recess and the snap protrusion to prevent the first side cover 10 from falling off during the final tightening, which is convenient for installation.

[0054] Furthermore, the second box wire clamp includes a second opening frame 16 provided on the back of the box body 1, and a second side cover 17 covering the second opening frame 16; the second box wire clamp includes a second wire clamping assembly for fixing the wiring harness and a second fastening assembly for adjusting and fixing the covering height of the second opening frame 16 and the second side cover 17, and a second wire outlet 18 is provided at the side wall of the second opening frame 16 and the second side cover 17 corresponding to the outlet of the second wire clamping assembly.

[0055] Through the cooperation between the second wire clamping assembly and the second fastening assembly, the wire harness can be compressed and fixed while the wire harness path can be sealed inside the second wire clamping assembly to prevent small insects from entering the second box wire clamp and then entering the box body 1 to damage the circuit board and affect the stability of the circuit board.

[0056] Furthermore, the second wire clamping assembly includes several first wire clamping plates 19 parallel to each other vertically provided on the inner wall of the second opening frame 16, and several groups of second wire clamping plates 20 staggered with the first wire clamping plates 19 on the second side cover 17. The tops of the first wire clamping plates 19 and the second wire clamping plates 20 are both provided with wire clamping grooves 21; the wire clamping grooves 21 correspond to the second wire outlet 18; and the bottom ends of the several groups of first wire clamping plates 19 are provided with back panels.

[0057] Both the first wire clamping plate 19 and the second wire clamping plate 20 are provided with a wire clamping groove 21, and the first wire clamping plate 19 and the second wire clamping plate 20 are staggered. When the second side cover 17 is covered with the second opening frame 16, the second wire clamping plate 20 is slidably engaged at the interval between two adjacent first wire clamping plates 19, and the wire harness placed on the groove of the first wire clamping plate 19 is pressed by the wire clamping groove 21 on the second wire clamping plate 20. Finally, the second fastening assembly is used to adjust the covering height of the second opening frame 16 and the second side cover 17 to compress the wire harness.

[0058] Furthermore, the second fastening assembly includes a second cylindrical protrusion 22 provided in the second opening frame 16 , a threaded hole is formed on the second cylindrical protrusion 22 , and the second side cover 17 is provided with a boss 23 and / or a bolt through hole that cooperates with the second cylindrical protrusion 22 .

[0059] A second cylindrical protrusion is provided in the second opening frame 16, and a threaded hole is provided on the second cylindrical protrusion. A bolt is connected to the threaded bolt through the bolt through the bolt hole on the second side cover 17. The covering height of the second opening frame 16 and the second side cover 17 is adjusted by adjusting the number of rotations of the bolt to adapt to the compression of different wiring harnesses; preferably, in order to improve the stability of the connection between the second opening frame 16 and the second side cover 17, a boss 23 is provided at a position corresponding to the bolt through hole in the second side cover 17, and a cylindrical hole is opened on the boss 23 to match the second cylindrical protrusion 22. The boss 23 is sleeved with the second cylindrical protrusion 22, thereby improving the stability of the connection between the second opening frame 16 and the second side cover 17;

[0060] Preferably, the second cylindrical protrusion 22 is embedded in the first clamping plate 19, and the boss 23 is embedded in the second partition corresponding to the second cylindrical protrusion 22, and the boss 23 is C-shaped; by embedding the second cylindrical protrusion 22 in the first clamping plate 19 and the boss 23 in the second partition, and then connecting them through threaded bolts, a more stable pressing force can be provided, and the force on the bolts is also more uniform, further improving the connection strength between the second opening frame 16 and the second side cover 17.

[0061] Furthermore, a mounting lug 24 is formed on the bottom wall of the box body 1 and extends outward. A bolt through hole is formed on the mounting lug 24 and a concave step is provided around the bolt through hole.

[0062] The box body 1 is pre-arranged with a mounting lug 24 , and a bolt through hole is pre-opened on the mounting lug 24 , which can be conveniently and quickly mounted and connected with a preset threaded hole on a mounting bracket provided on a corresponding mechanism.

[0063] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A controller box with improved reliability, comprising a box body (1) and a cover plate (2) connected to the box body (1), characterized in that A circuit board (3) is provided on the side of the cover plate (2) facing the opening end of the box body (1), and a plurality of heat dissipation strips (5) are provided on the side of the cover plate (2) away from the opening end of the box body (1); A sealing gasket (4) is provided between the open end surface of the box body (1) and the cover plate (2); a first box wire clamp is provided on the side surface of the box body (1), and a second box wire clamp is provided on the back surface of the box body (1).

2. A controller box with improved reliability according to claim 1, characterized in that: The opening end surface of the box body (1) is provided with a concave positioning structure, and the positioning structure comprises a step end surface (25) and a positioning protrusion (6) arranged around the step end surface (25); The cover plate (2) covers the step end surface (25), and the sealing gasket (4) is provided between the step end surface (25) and the cover plate (2); A flange is provided at one portion of the positioning protrusion (6) toward the cover plate (2), and the cover plate (2) is detachably inserted between the flange and the step end surface (25).

3. A controller box with improved reliability according to claim 2, characterized in that: Drain grooves (7) are provided on the step end surfaces (25) of the two opposite side walls of the box body (1). The drainage grooves (7) are located between the sealing gasket (4) and the positioning protrusions (6). A drainage port (8) communicating with the drainage grooves (7) is correspondingly opened on the box body (1).

4. A controller box with improved reliability according to claim 1, characterized in that: The first box wire clamp comprises a first opening frame (9) provided on the outer side of the box body (1), and a first side cover (10) covering the first opening frame (9); The first box wire clamp comprises a first wire clamping assembly for fixing the wire harness, and a first fastening assembly for adjusting and fixing the covering height of the first opening frame (9) and the first side cover (10); The side wall of the first opening frame (9) and the first side cover (10) are provided with a first wire outlet (11), and the first wire outlet (11) corresponds to the outlet end of the first wire clamping assembly.

5. A controller box with improved reliability according to claim 4, characterized in that: The first wire clamping assembly comprises a wire trough (12) provided in the first opening frame (9), a plurality of groups of strip-shaped protrusions (13) are provided on the inner wall of the wire trough (12), and a plurality of groups of wire pressing plates (14) are provided on the first side cover (10) to match the strip-shaped protrusions (13); the outlet of the wire trough (12) corresponds to the first wire outlet (11).

6. A controller box with improved reliability according to claim 5, characterized in that: The first fastening assembly comprises a first cylindrical protrusion (15) arranged at one end of the wiring trough (12) away from the wire outlet, a threaded hole is formed on the first cylindrical protrusion (15), and the first side cover (10) is provided with a countersunk hole adapted to the threaded hole.

7. The controller box with improved reliability according to claim 1, characterized in that: The second box wire clamp comprises a second opening frame (16) provided on the back of the box body (1), and a second side cover (17) covering the second opening frame (16); The second box wire clamp comprises a second wire clamping assembly for fixing the wire harness and a second fastening assembly for adjusting and fixing the covering height of the second opening frame (16) and the second side cover (17); a second wire outlet (18) is provided at a position corresponding to the outlet of the second wire clamping assembly and the side wall of the second opening frame (16) and the second side cover (17).

8. The controller box with improved reliability according to claim 7, characterized in that: The second wire clamping assembly comprises a plurality of mutually parallel first wire clamping plates (19) vertically provided on the inner side wall of the second opening frame (16), a plurality of groups of second wire clamping plates (20) staggered with the first wire clamping plates (19) provided on the second side cover (17), and a wire clamping groove (21) provided at the top of each of the first wire clamping plates (19) and the second wire clamping plates (20); The wire clamping groove (21) corresponds to the second wire outlet (18); and a back plate is provided at the bottom end of a plurality of groups of the first wire clamping plates (19).

9. The controller box with improved reliability according to claim 8, characterized in that: The second fastening assembly comprises a second cylindrical protrusion (22) provided in the second opening frame (16), a threaded hole being provided on the second cylindrical protrusion (22), and a boss (23) and / or a bolt through hole being provided on the second side cover and being matched with the second cylindrical protrusion (22).

10. The controller box with improved reliability according to claim 1, characterized in that: The bottom wall of the box body (1) is extended outward to form a mounting ear piece (24), a bolt through hole is opened on the mounting ear piece (24), and a concave step is provided around the bolt through hole.

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