Moisture-proof JXF distribution box

Abstract

The application relates to the technical field of distribution boxes, and relates to a moisture-proof JXF distribution box, which comprises a box body, a box door hinged to the box body, a first circuit breaker, a second circuit breaker and a third circuit breaker installed in the box body, and a mounting hole formed in the side surface of the box body. The box door is used for protecting the structure and electrical components in the box body in the closed state. The mounting hole is fixedly connected with a cooling fan. The cooling fan is used for sucking away the air in the box body, so that the air in the box body is circulated and the temperature in the box body is reduced. The side surface of the box body is fixedly connected with a protective cover, and the protective cover is provided with a drying agent. The moisture-proof JXF distribution box avoids the problem that the box body forms a relatively closed space, the heat dissipation effect is reduced, the internal temperature continuously increases under some environments, the internal electrical components are accelerated to age, and the components are damaged, the protection is misoperated or the service life is shortened.

Description

Technical Field

[0001] This invention belongs to the field of distribution box technology, specifically relating to a moisture-proof JXF distribution box. Background Technology

[0002] The JXF distribution box is a general-purpose low-voltage enclosed complete power distribution device, suitable for three-phase or single-phase power distribution systems with AC 50 / 60Hz and rated voltage of 500V and below. It mainly undertakes the functions of power distribution, overload and short circuit protection, leakage protection and circuit on / off control of the terminal circuit. It can be assembled into various functional types such as lighting distribution box, power distribution box, metering box, socket box, and leakage protection box as needed.

[0003] To ensure outdoor moisture resistance, existing JXF distribution boxes use PU sealing strips and other sealing structures between the box body and the door, creating a relatively sealed space. Although the heat generated by the electrical components inside the box is limited, in high summer temperatures and under direct sunlight, the surface of the box absorbs heat and conducts it inward. The sealed structure hinders natural convection heat dissipation between the inside and outside of the box, causing the internal temperature to rise continuously and far exceed the ambient temperature. The internal electrical components operate in a high-temperature environment for a long time, which accelerates the aging of insulation materials, increases contact resistance, and easily exceeds the design operating threshold, thereby causing component damage, protection malfunctions, or shortened service life. Summary of the Invention

[0004] The purpose of this invention is to provide a moisture-proof JXF distribution box with a simple structure and reasonable design in order to solve the above problems.

[0005] The present invention achieves the above objectives through the following technical solutions: A moisture-proof JXF distribution box includes a box body with a hinged door. A first circuit breaker, a second circuit breaker, and a third circuit breaker are installed inside the box body. When the door is closed, it works in conjunction with the box body to protect the internal structure and electrical components. A mounting hole is provided on the side surface of the box body, and a cooling fan is fixedly connected to the mounting hole. The cooling fan draws air out of the box body, circulates the air inside, and lowers the temperature inside the box. A protective cover is fixedly connected to the side surface of the box body, and a desiccant is placed inside the protective cover.

[0006] As a further optimization of the present invention, the side surface of the housing is provided with an air inlet hole that communicates with its interior. The air inlet hole is connected to the protective cover. The air inlet hole, together with the protective cover, enables the interior of the housing to communicate with the outside, ensuring that the cooling fan generates convective air when it is working.

[0007] As a further optimization of the present invention, the protective cover includes an outer shell fixedly connected to the side surface of the housing, and a support plate fixedly connected to the inner wall of the outer shell. The desiccant is in contact with the inner wall of the outer shell and the surface of the support plate. The support plate cooperates with the outer shell to support the desiccant, so as to prevent the desiccant from directly covering the cooling fan and obstructing the operation of the cooling fan.

[0008] As a further optimization of the present invention, a cover is detachably installed on the inner wall of the outer shell. The cover has a plurality of evenly distributed vent holes. The cover communicates with the interior of the outer shell through the vent holes. An integrally formed boss is provided on the side of the cover near the box body. The boss abuts against the surface of the desiccant. The end of the boss facing the box body has a chamfer. The boss ensures that when the cover is installed on the outer shell, it restricts the desiccant to the outer shell and the support plate, thus ensuring the stability of the desiccant's position.

[0009] As a further optimization of the present invention, an assembly frame is fixedly connected to the inner side of the shield boss, a locking pin is slidably connected to the inner wall of the assembly frame, and a first spring is fixedly connected between the assembly frame and the locking pin. The first spring applies a preload force to the locking pin to ensure that the locking pin remains in the locked position when not under force.

[0010] As a further optimization of the present invention, the locking pin slides through the side surface of the boss, and the end of the locking pin away from the first spring is hemispherical. The surface of the outer shell is provided with a positioning hole, and the locking pin is inserted into the inner wall of the positioning hole. Under the action of the first spring, the locking pin is inserted into the positioning hole to lock the cover on the outer shell to ensure the stability of the cover.

[0011] As a further optimization of the present invention, a positioning frame is fixedly connected to the inner side of the door. Circular grooves are provided on both the left and right sides of the positioning frame, and a second spring is fixedly connected to each groove. A first support strip is fixedly connected to the end of the second spring facing away from the positioning frame. Another circular groove is provided on both the upper and lower sides of the positioning frame, and a second spring is fixedly connected to each groove. A second support strip is fixedly connected to the end of the second spring facing away from the positioning frame. A sealing strip is wound around the first and second support strips, forming a frame-shaped sealing structure. Supported by the first support strip, the second support strip, and the second spring, the sealing strip seals the gap between the door and the body when closed, preventing outside air from entering the body through the gap between the door and the body.

[0012] As a further optimization of the present invention, a limiting frame is fixedly connected to the positioning frame. The limiting frame is slidably connected to the surfaces of the first support strip and the second support strip. The limiting frame, in conjunction with the positioning frame, guides the movement direction of the first support strip and the second support strip, preventing the first support strip and the second support strip from shifting under the action of the second spring, which would cause the sealing strip to fall out of the sealing position.

[0013] As a further optimization of the present invention, the outer shell is fitted onto the cooling fan, and the surface of the support plate is provided with a strip-shaped hole. The support plate is connected to the outer shell, the air inlet and the cooling fan through the strip-shaped hole. The strip-shaped hole allows air to flow. When the air flows through the strip-shaped hole, the desiccant adsorbs the water vapor in the air and reduces the air humidity.

[0014] The beneficial effects of this invention are as follows: 1. By installing cooling fans, air inlets, protective covers, and desiccants on the enclosure, the cooling fans and air inlets that connect the enclosure to the external environment are blocked by desiccants and protective covers. When the air inside the enclosure convects, the desiccant absorbs moisture in the convecting air, reducing air humidity. This ensures the enclosure's moisture-proof performance while improving heat dissipation. It also prevents the enclosure from becoming a relatively enclosed space, which would reduce heat dissipation and cause the internal temperature to rise continuously in certain environments. This would accelerate the aging of internal electrical components, leading to component damage, protection malfunctions, or shortened service life.

[0015] 2. A positioning frame, a second spring, a first support strip, a second support strip, and a sealing strip are installed on the door. When the door is closed, the sealing strip adaptively compensates for the gap under the synergistic action of the spring and the support strip, thereby improving the sealing effect at the joint between the door and the box body. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the box door of the present invention in the open state; Figure 3 This is a schematic diagram showing the location of the desiccant in this invention; Figure 4 This is a schematic diagram showing the position of the cooling fan in this invention; Figure 5 This is a schematic diagram of the connection structure between the outer shell and the support plate of the present invention; Figure 6 This is a schematic diagram showing the position of the locking pin of the present invention; Figure 7 This is a schematic diagram of the connection structure between the positioning frame and the limiting frame of the present invention; Figure 8 This is the present invention. Figure 7 Enlarged view of the structure at point A in the middle; Figure 9 This is a schematic diagram of the connection structure between the positioning frame and the second spring of the present invention.

[0017] In the diagram: 1. Enclosure; 2. Enclosure door; 3. First circuit breaker; 4. Second circuit breaker; 5. Third circuit breaker; 6. Mounting hole; 7. Cooling fan; 8. Air inlet; 9. Protective cover; 91. Outer shell; 92. Support plate; 10. Desiccant; 11. Shield; 12. Assembly frame; 13. Locking pin; 14. First spring; 15. Positioning frame; 16. Second spring; 17. First support bar; 18. Second support bar; 19. Sealing strip; 20. Limiting frame. Detailed Implementation

[0018] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0019] Example: Please refer to Figures 1-9 A moisture-proof JXF distribution box includes a box body 1, with a door 2 hinged to the box body 1. A first circuit breaker 3, a second circuit breaker 4, and a third circuit breaker 5 are installed inside the box body 1. When the door 2 is closed, it works with the box body 1 to protect the structure and electrical components inside the box body 1. A mounting hole 6 is opened on the side surface of the box body 1, and a cooling fan 7 is fixedly connected in the mounting hole 6. The cooling fan 7 draws out the air inside the box body 1, circulates the air inside the box body 1, and reduces the temperature inside the box body 1. A protective cover 9 is fixedly connected to the side surface of the box body 1, and a desiccant 10 is placed inside the protective cover 9. The first circuit breaker 3, the second circuit breaker 4, the third circuit breaker 5, and the cooling fan 7 are existing technologies and will not be described in detail here.

[0020] Please see Figure 3 The side surface of the enclosure 1 is provided with an air inlet 8 that communicates with its interior. The air inlet 8 is connected to the protective cover 9. The air inlet 8, together with the protective cover 9, enables the interior of the enclosure 1 to communicate with the outside, ensuring that the cooling fan 7 generates convective air when it is working.

[0021] Please see Figure 3 and Figure 5 The protective cover 9 includes an outer shell 91 fixedly connected to the side surface of the housing 1. A support plate 92 is fixedly connected to the inner wall of the outer shell 91. The desiccant 10 is in contact with the inner wall of the outer shell 91 and the surface of the support plate 92. The support plate 92 cooperates with the outer shell 91 to support the desiccant 10, so as to prevent the desiccant 10 from directly covering the cooling fan 7 and hindering the operation of the cooling fan 7.

[0022] Please see Figure 5 and Figure 6A cover 11 is detachably installed on the inner wall of the outer shell 91. The cover 11 has multiple evenly distributed vent holes. The cover 11 communicates with the interior of the outer shell 91 through the vent holes. The side of the cover 11 near the housing 1 has an integrally formed boss. The boss abuts against the surface of the desiccant 10. The end of the boss facing the housing 1 has a chamfer. The boss restricts the desiccant 10 to the outer shell 91 and the support plate 92 when the cover 11 is installed on the outer shell 91, ensuring the stability of the position of the desiccant 10.

[0023] Please see Figure 6 An assembly frame 12 is fixedly connected to the inner side of the protrusion of the cover 11. A locking pin 13 is slidably connected to the inner wall of the assembly frame 12. A first spring 14 is fixedly connected between the assembly frame 12 and the locking pin 13. The first spring 14 applies a preload force to the locking pin 13 to ensure that the locking pin 13 remains in the locked position when not under force.

[0024] Please see Figure 5 and Figure 9 The locking pin 13 slides through the side surface of the boss. The end of the locking pin 13 away from the first spring 14 is hemispherical. The surface of the outer shell 91 is provided with a positioning hole. The locking pin 13 is inserted into the inner wall of the positioning hole. Under the action of the first spring 14, the locking pin 13 is inserted into the positioning hole to lock the cover 11 on the outer shell 91 to ensure the stability of the cover 11.

[0025] Please see Figure 2 , Figures 7-9 A positioning frame 15 is fixedly connected to the inner side of the door 2. Circular grooves are provided on both the left and right sides of the positioning frame 15, and a second spring 16 is fixedly connected to each groove. A first support strip 17 is fixedly connected to one end of the second spring 16 away from the positioning frame 15. Another circular groove is provided on both the upper and lower sides of the positioning frame 15, and a second spring 16 is fixedly connected to each groove. A second support strip 18 is fixedly connected to one end of the second spring 16 away from the positioning frame 15. A sealing strip 19 is wrapped around the first support strip 17 and the second support strip 18, forming a frame-shaped sealing structure. Under the support of the first support strip 17, the second support strip 18, and the second spring 16, the sealing strip 19 seals the gap between the door 2 and the box body 1 in the closed state, preventing outside air from entering the box body 1 through the gap between the door 2 and the box body 1.

[0026] Please see Figures 7-9 A limiting frame 20 is fixedly connected to the positioning frame 15. The limiting frame 20 is slidably connected to the surfaces of the first support bar 17 and the second support bar 18. The limiting frame 20, in conjunction with the positioning frame 15, guides the movement direction of the first support bar 17 and the second support bar 18, preventing the first support bar 17 and the second support bar 18 from shifting under the action of the second spring 16, which would cause the sealing strip 19 to disengage from the sealing position.

[0027] Please see Figures 3-5 The outer casing 91 is mounted on the cooling fan 7. The surface of the support plate 92 has a strip-shaped hole. The support plate 92 connects the outer casing 91, the air inlet 8, and the cooling fan 7 through the strip-shaped hole. The strip-shaped hole allows air to flow. When air flows through the strip-shaped hole, the desiccant 10 absorbs water vapor in the air and reduces the air humidity.

[0028] It should be noted that when using this moisture-proof JXF distribution box, open the box door 2 and connect the first circuit breaker 3, the second circuit breaker 4, the third circuit breaker 5 and the power distribution equipment according to the drawings to realize the power distribution and overload protection functions of the power distribution equipment. After the wiring is completed, close the cabinet door 2. The cabinet door 2, together with the positioning frame 15 and the limiting frame 20, pushes the first support strip 17, the second support strip 18 and the sealing strip 19. During the movement, the sealing strip 19 contacts the cabinet body 1 and deforms. During the deformation process, the sealing strip 19 inserts into the cabinet body 1. At the same time, the sealing strip 19 is forced to push the first support strip 17 and the second support strip 18. The first support strip 17 and the second support strip 18 respectively compress the corresponding second spring 16. After the cabinet door 2 is completely closed, the second spring 16, supported by the positioning frame 15, applies a preload force to the first support strip 17 and the second support strip 18. Under the action of the second spring 16, the first support strip 17 and the second support strip 18 squeeze the sealing strip 19. The sealing strip 19 is pressed tightly against the inner wall of the cabinet body 1, sealing the gap between the cabinet body 1 and the cabinet door 2. At the same time, the cooling fan 7 works in conjunction with the outer casing 91, the strip hole and the shield 11 to exhaust the air inside the box 1. Meanwhile, outside air enters the box 1 through the shield 11, the desiccant 10, the strip hole and the air inlet 8, causing forced convection and heat exchange in the air inside the box 1. By installing a cooling fan 7, an air inlet 8, a protective cover 9, and a desiccant 10 on the enclosure 1, the cooling fan 7 and the air inlet 8, which connect the enclosure 1 to the external environment, are all blocked by the desiccant 10 and the protective cover 9. When the air inside the enclosure 1 convects, the desiccant 10 absorbs the moisture in the convecting air, reducing the air humidity. This ensures the moisture-proof performance of the enclosure 1 while improving the heat dissipation effect. It also prevents the enclosure 1 from becoming a relatively closed space, which would reduce the heat dissipation effect and cause the internal temperature to rise continuously in certain environments, accelerating the aging of internal electrical components and leading to component damage, protection malfunctions, or shortened service life.

[0029] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A moisture-proof JXF distribution box, comprising a box body (1), characterized in that: The enclosure (1) is hinged with a door (2). The enclosure (1) is equipped with a first circuit breaker (3), a second circuit breaker (4) and a third circuit breaker (5). The side surface of the enclosure (1) is provided with a mounting hole (6). A cooling fan (7) is fixedly connected in the mounting hole (6). A protective cover (9) is fixedly connected in the side surface of the enclosure (1). A desiccant (10) is provided in the protective cover (9).

2. The moisture-proof JXF distribution box according to claim 1, characterized in that: The side surface of the housing (1) is provided with an air inlet (8) that communicates with its interior, and the air inlet (8) is connected to the protective cover (9).

3. The moisture-proof JXF distribution box according to claim 1, characterized in that: The protective cover (9) includes an outer shell (91) fixedly connected to the side surface of the box (1), and a support plate (92) fixedly connected to the inner wall of the outer shell (91). The desiccant (10) is in contact with the inner wall of the outer shell (91) and the surface of the support plate (92).

4. The moisture-proof JXF distribution box according to claim 2, characterized in that: The inner wall of the outer shell (91) is detachably fitted with a cover (11). The cover (11) has a plurality of evenly distributed ventilation holes. The cover (11) communicates with the interior of the outer shell (91) through the ventilation holes. The cover (11) has an integrally formed boss on the side near the box (1). The boss abuts against the surface of the desiccant (10). The end of the boss facing the box (1) has a chamfer.

5. A moisture-proof JXF distribution box according to claim 4, characterized in that: An assembly frame (12) is fixedly connected to the inner side of the protrusion of the shield (11), and a locking pin (13) is slidably connected to the inner wall of the assembly frame (12). A first spring (14) is fixedly connected between the assembly frame (12) and the locking pin (13).

6. A moisture-proof JXF distribution box according to claim 5, characterized in that: The latch (13) slides through the side surface of the boss. The end of the latch (13) away from the first spring (14) is hemispherical. The surface of the outer shell (91) is provided with a positioning hole. The latch (13) is inserted into the inner wall of the positioning hole.

7. The moisture-proof JXF distribution box according to claim 1, characterized in that: A positioning frame (15) is fixedly connected to the inner side of the door (2). A circular groove is provided on both the left and right sides of the positioning frame (15). A second spring (16) is fixedly connected in each of the circular grooves. A first support strip (17) is fixedly connected to one end of the second spring (16) away from the positioning frame (15). Another circular groove is provided on both the upper and lower sides of the positioning frame (15). A second spring (16) is fixedly connected in each of the other circular grooves. A second support strip (18) is fixedly connected to one end of the second spring (16) away from the positioning frame (15). A sealing strip (19) is wrapped around the first support strip (17) and the second support strip (18). The sealing strip (19) forms a frame-shaped sealing structure.

8. A moisture-proof JXF distribution box according to claim 7, characterized in that: A limiting frame (20) is fixedly connected to the positioning frame (15), and the limiting frame (20) is slidably connected to the surfaces of the first support bar (17) and the second support bar (18).

9. A moisture-proof JXF distribution box according to claim 3, characterized in that: The outer shell (91) is fitted onto the cooling fan (7), and the surface of the support plate (92) is provided with a strip hole. The support plate (92) is connected to the outer shell (91), the air inlet (8), and the cooling fan (7) through the strip hole.

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