An electric control box waterproof structure

Abstract

This utility model discloses a waterproof structure for an electrical control box, relating to the field of air conditioning technology. It includes a low-voltage water shield, a high-voltage water shield, an inner wire rubber ring, a pressing mechanism, an outer wire rubber ring, a second inner wire rubber ring, a second outer wire rubber ring, a pulling mechanism, and an upward pulling mechanism. In this utility model, the pressing mechanism uses spring force to press the low-voltage wire against the pressure roller, ensuring that the low-voltage wire enters the electrical control box in a lower outer position than an inner position, preventing water from entering the electrical control box along the low-voltage wire. Through the cooperation of the pulling and upward pulling mechanisms, tightening the locking screws allows the high-voltage wire to be adjusted under the action of a tension spring, ensuring that the high-voltage wire enters the electrical control box in a lower outer position than an inner position, preventing water from entering the electrical control box along the high-voltage wire. The low-voltage and high-voltage water shields have drainage gaps between their inner sides and the outer side of the electrical control box, allowing condensate to flow out from the bottom. The waterproof function is achieved through the water shield blocking, the rubber ring sealing, and the limiting of the wire position by each mechanism.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to a waterproof structure for an electrical control box. Background Technology

[0002] Because heat pump air conditioners are often installed outdoors, their electrical control boxes are susceptible to damage from rain, humidity, and condensation. Insufficient waterproofing of the control box can lead to internal short circuits, electrical leaks, and even fire hazards. Therefore, the waterproof rating of a heat pump's control box typically needs to be IPX4 (splash-proof) or higher to ensure no water can enter in splash-prone conditions.

[0003] In actual use, both high-voltage and low-voltage wires must pass through the control box and connect to the circuit board via wire guide rings. When the machine is heating, the evaporator absorbs heat from the outside, and the surface temperature of the wires may drop below 0°C, causing moisture in the air to frost on the wires. When the heat pump starts its defrosting cycle on a timer, the frost on the wires melts into water. This condensate flows along the wires into the control box, threatening its safe operation and posing a significant safety hazard.

[0004] To address the issue of condensate flowing into the electrical control box along the power lines, the waterproof structure of the control box needs to be optimized to improve its waterproof performance and ensure the safe and stable operation of the heat pump air conditioner. Utility Model Content

[0005] The purpose of this utility model is to provide a waterproof structure for the electrical control box in order to solve the above-mentioned problems. This solves the problem that when the electrical control box of a heat pump air conditioner is defrosting, condensate flows along the wires into the electrical control box, which may lead to short circuits, leakage, or even fires.

[0006] To address the aforementioned problems, this utility model provides a technical solution: a waterproof structure for an electrical control box, comprising an electrical control box, a low-voltage water shield, a high-voltage water shield, an inner wire rubber ring, a pressing mechanism, an outer wire rubber ring, a second inner wire rubber ring, a second outer wire rubber ring, a pulling mechanism, and an upward mechanism; an inner wire rubber ring is provided inside the upper openings on both the left and right sides of the electrical control box; a low-voltage water shield is fixedly connected to the outer side of the upper openings on both the left and right sides of the electrical control box, and an outer wire rubber ring is provided inside the lower outer opening of the low-voltage water shield; an inner wire rubber ring is provided inside the lower openings on both the left and right sides of the electrical control box; a high-voltage water shield is fixedly connected to the outer side of the lower outer opening of the high-voltage water shield, and an outer wire rubber ring is provided inside the lower outer opening of the high-voltage water shield; an upward mechanism is fixedly connected to the inner side of the lower openings on both the left and right sides of the electrical control box; the pressing mechanism is fixedly connected to the upper inner side of the low-voltage water shield; the pulling mechanism is located inside the high-voltage water shield.

[0007] Preferably, the specific structure of the pressing mechanism includes a housing, a telescopic block, a spring, a connecting block, and a pressure roller; the housing is fixedly connected to the upper side of the inside of the weak current water shield; the telescopic block is movably connected to the inside of the housing; a spring is provided between the upper inside of the telescopic block and the upper inside of the housing; a connecting block is fixedly connected to the bottom of the telescopic block; and a pressure roller is movably connected to the lower inside of the connecting block.

[0008] Preferably, the upper outer side of the telescopic block is T-shaped.

[0009] Preferably, the pull-down mechanism includes a clamping screw, a pull-down clamp, a slide groove, and a tension spring. The front and rear surfaces of the high-voltage water shield are both provided with slide grooves, and the pull-down clamp is movably connected to the inner side of each slide groove. The bottom sides of the pull-down clamp are connected to the corresponding lower side of the slide groove via tension springs. The clamping screw is movably connected to a threaded hole on the upper left side of the high-voltage water shield, and the inner and outer sides of the clamping screw are connected to the inner side of the upper left side of the pull-down clamp.

[0010] Preferably, the inner side of the pull-down clamp is arc-shaped.

[0011] Preferably, the pull-up mechanism includes a frame, a second sliding groove, a second tension spring, a pull-up clamp, a slot block, and a second clamping screw. The frame is fixedly connected to the inner side of the electrical control box, and vertical sliding grooves are provided at both the front and rear positions inside the frame. The front and rear outer sides of the pull-up clamp are movably connected to the inner sides of the corresponding sliding grooves. A slot block is fixedly connected to the center of the lower side of the pull-up clamp. The two upper sides of the pull-up clamp are connected to the upper sides of the corresponding sliding grooves via the second tension spring. The second clamping screw is movably connected to a threaded hole on the lower side of the frame, and the inner and outer sides of the second clamping screw are connected to the inner side of the slot block.

[0012] Preferably, the inner side of the upper pull clamp is arc-shaped.

[0013] Preferably, a drainage gap is provided between the lower inner side of the low-voltage water shield and the high-voltage water shield and the outer side of the electrical control box.

[0014] The beneficial effects of this utility model are: (1) This utility model has a reasonable and simple structure, low production cost, convenient installation, and complete functions. By using the spring elastic force through the pressing mechanism, the pressure roller is pressed to press the weak wire, ensuring that the weak wire is in a low-inner-low state when it enters the electrical control box, thus preventing water from entering the electrical control box along the weak wire.

[0015] (2) By cooperating with the pull-down mechanism and the pull-up mechanism, the position of the high-voltage wire can be adjusted under the action of the tension spring by tightening the clamping screw, so as to ensure that the high-voltage wire is in a state of lower outside and higher inside when it enters the electrical control box, thus preventing water from entering the electrical control box along the high-voltage wire.

[0016] (3) The weak current water shield and the strong current water shield of this utility model are provided with drainage gaps between the inner side of the bottom and the outer side of the electrical control box, which can guide the condensate to flow out from the bottom. The waterproof function is achieved by blocking the water shield, sealing the rubber ring and limiting the position of the wires in each mechanism. Attached Figure Description

[0017] Figure 1 This is a three-dimensional drawing of the present invention.

[0018] Figure 2 This is a top view of the present invention.

[0019] Figure 3 for Figure 2 A sectional view.

[0020] Figure 4 This is a schematic diagram of the pressing mechanism.

[0021] Figure 5 This is a schematic diagram of the pull-down mechanism.

[0022] Figure 6 This is a schematic diagram of the pull-up mechanism.

[0023] Figure 7 for Figure 6 Side sectional view.

[0024] 1-Electrical control box; 2-Low voltage water shield; 3-High voltage water shield; 4-Inner wire rubber ring one; 5-Pressing mechanism; 6-Outer wire rubber ring one; 7-Inner wire rubber ring two; 8-Outer wire rubber ring two; 9-Pull-down mechanism; 10-Pull-up mechanism; 51-Outer shell; 52-Telescopic block; 53-Spring; 54-Connecting block; 55-Pressure roller; 91-Clamping screw; 92-Pull-down clamp; 93-Slide groove one; 94-Tension spring one; 101-Frame; 102-Slide groove two; 103-Tension spring two; 104-Pull-up clamp; 105-Clamping block; 106-Clamping screw two. Detailed Implementation

[0025] like Figures 1 to 3As shown, this specific embodiment adopts the following technical solution: a waterproof structure for an electrical control box, including an electrical control box 1, and further including a low-voltage water shield 2, a high-voltage water shield 3, an inner wire rubber ring 4, a pressing mechanism 5, an outer wire rubber ring 6, an inner wire rubber ring 7, an outer wire rubber ring 8, a pulling mechanism 9, and an upward mechanism 10; the electrical control box 1 has an inner wire rubber ring 4 inside the openings on both the left and right sides, and the low-voltage water shield 2 is fixedly connected to the outer side of the openings on both the left and right sides of the electrical control box 1, and the low-voltage water shield 2 is lower than the outer side of the opening. An outer wire rubber ring 6 is provided inside each of the side openings. An inner wire rubber ring 7 is provided inside each of the left and right lower side openings of the electrical control box 1. A high-voltage water shield 3 is fixedly connected to the outer side of each of the left and right lower side openings of the electrical control box 1, and an outer wire rubber ring 8 is provided inside the lower outer side opening of each of the high-voltage water shield 3. An upward pull mechanism 10 is fixedly connected to the inner side of each of the left and right lower side openings of the electrical control box 1. A downward press mechanism 5 is fixedly connected to the upper inner side of the low-voltage water shield 2. A downward pull mechanism 9 is located inside the high-voltage water shield 3.

[0026] like Figure 4 As shown, the specific structure of the pressing mechanism 5 includes a housing 51, a telescopic block 52, a spring 53, a connecting block 54, and a pressure roller 55; the housing 51 is externally fixedly connected to the upper side of the interior of the weak current water shield 2; the telescopic block 52 is externally movably connected to the interior of the housing 51, a spring 53 is provided between the upper interior of the telescopic block 52 and the upper interior of the housing 51, the bottom of the telescopic block 52 is fixedly connected to the connecting block 54, and the lower interior of the connecting block 54 is movably connected to the pressure roller 55.

[0027] The upper outer side of the telescopic block 52 is T-shaped.

[0028] like Figure 5 As shown, the specific structure of the pull-down mechanism 9 includes a clamping screw 91, a pull-down clamp 92, a slide groove 93, and a tension spring 94; the front and rear surfaces of the high-voltage water shield 3 are provided with slide grooves 93, and the pull-down clamp 92 is movably connected to the inner side of the slide groove 93; the bottom two sides of the pull-down clamp 92 are connected to the lower side of the corresponding slide groove 93 through tension springs 94; the clamping screw 91 is movably connected in the threaded hole provided on the upper left side of the high-voltage water shield 3, and the inner and outer sides of the clamping screw 91 are connected to the inner side of the upper left side of the pull-down clamp 92.

[0029] The inner side of the pull-down clamp 92 is arc-shaped.

[0030] like Figure 6 and Figure 7As shown, the specific structure of the pull-up mechanism 10 includes a frame 101, a second slide groove 102, a second tension spring 103, a pull-up clamp 104, a slot block 105, and a second clamping screw 106. The frame 101 is fixedly connected to the inner side of the electrical control box 1. Vertical slide grooves 102 are provided at both the front and rear positions inside the frame 101. The front and rear outer sides of the pull-up clamp 104 are movably connected to the inner side of the corresponding slide groove 102. A slot block 105 is fixedly connected to the center of the lower side of the pull-up clamp 104. The two upper sides of the pull-up clamp 104 are connected to the upper side of the corresponding slide groove 102 through the second tension spring 103. The second clamping screw 106 is movably connected to the threaded hole provided on the lower side of the frame 101. The inner and outer sides of the second clamping screw 106 are connected to the inner side of the slot block 105.

[0031] The inner side of the upper pull clamp 104 is arc-shaped; a drainage gap is provided between the lower inner side of the weak current water shield 2 and the strong current water shield 3 and the outer side of the electrical control box 1.

[0032] The utility model is used as follows: This utility model has a reasonable and simple structure, low production cost, convenient installation, and complete functions. When using the waterproof structure of the electrical control box, an inner wire rubber ring 4 is installed inside the upper openings on both sides of the electrical control box 1, and a weak current water shield 2 is fixed on the outside. An outer wire rubber ring 6 is installed inside the lower opening on the outside of the weak current water shield 2. The weak current wire passes through the outer wire rubber ring 6, the inside of the weak current water shield 2, and the inner wire rubber ring 4 in sequence before connecting to the circuit board. The outer shell 51 is fixed to the upper inside of the weak current water shield 2 in the pressing mechanism 5 on the upper side of the inner side of the weak current water shield 2. The telescopic block 52 passes through... Spring 53 is movably connected inside the outer casing 51. Its bottom connecting block 54 drives the pressure roller 55 to press down the low-voltage wire. The elastic force of spring 53 causes the pressure roller 55 to move down and press down the low-voltage wire near the outer wire rubber ring 6, thus ensuring that the low-voltage wire is in a state of lower outside and higher inside when it enters the electrical control box, thereby preventing water from entering the electrical control box along the low-voltage wire. The electrical control box 1 has an inner wire rubber ring 7 inside the lower left and right openings and a high-voltage water shield 3 fixed on the outside. The high-voltage water shield 3 has an outer wire rubber ring 8 inside the lower outer opening. The high-voltage wire passes through the outer wire rubber ring 8 and the interior of the high-voltage water shield 3 in sequence. The inner wire rubber ring 7 is connected to the circuit board. In the pull-down mechanism 9 inside the high-voltage water shield 3, the pull-down clamp 92 is movably connected to the slide groove 93 inside the high-voltage water shield 3 via the tension spring 94. Tightening the locking screw 91 can disengage the pull-down clamp 92. Then, under the action of the tension spring 94, the high-voltage wire near the outer wire rubber ring 8 moves down. In addition, in the pull-up mechanism 10 inside the openings on the left and right sides of the control box 1, the frame 101 is fixed to the inner side of the control box 1. The pull-up clamp 104 is movably connected to the slide groove 102 of the frame 101 via the tension spring 103. Tightening the locking screw 106 separates it from the slot block 105. Then, under the action of the tension spring 103, the upper clamp 104 moves upward, which allows the high-voltage wire near the inner wire rubber ring 7 to move upward. This ensures that the high-voltage wire enters the electrical control box in a state where the outside is lower and the inside is higher, thus preventing water from entering the electrical control box along the high-voltage wire. In addition, the drainage gap between the lower inner side of the low-voltage water shield 2 and the high-voltage water shield 3 and the outer side of the electrical control box 1 can guide condensate water to flow out from the bottom. The whole system achieves waterproof function through the water shield blocking, rubber ring sealing, and the limiting of the wire position by each mechanism.

[0033] The control method of this utility model is either manual start-up or control through existing automation technology. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

[0034] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A waterproof structure for an electrical control box, comprising an electrical control box (1), characterized in that: It also includes a low-voltage water shield (2), a high-voltage water shield (3), an inner wire rubber ring one (4), a pressing mechanism (5), an outer wire rubber ring one (6), an inner wire rubber ring two (7), an outer wire rubber ring two (8), a pull-down mechanism (9), and a pull-up mechanism (10). The electrical control box (1) has an inner wire rubber ring (4) inside the upper left and right openings. The electrical control box (1) has a weak current water shield (2) fixedly connected to the outer side of the upper left and right openings. The weak current water shield (2) has an outer wire rubber ring (6) inside the lower outer opening. The electrical control box (1) has an inner wire rubber ring (7) inside the lower left and right openings. The electrical control box (1) has a strong current water shield (3) fixedly connected to the outer side of the lower left and right openings. The strong current water shield (3) has an outer wire rubber ring (8) inside the lower outer opening. The electrical control box (1) has an upper pull mechanism (10) fixedly connected to the inner side of the lower left and right openings. The pressing mechanism (5) is fixedly connected to the upper side inside the weak current water shield (2); The pull-down mechanism (9) is located inside the high-voltage water shield (3).

2. The waterproof structure of the electrical control box according to claim 1, characterized in that: The specific structure of the pressing mechanism (5) includes a housing (51), a telescopic block (52), a spring (53), a connecting block (54), and a pressure roller (55). The outer shell (51) is externally fixedly connected to the upper side of the inside of the weak current water shield (2); The telescopic block (52) is externally movably connected to the inside of the outer shell (51). A spring (53) is provided between the upper inner side of the telescopic block (52) and the upper inner side of the outer shell (51). A connecting block (54) is fixedly connected to the bottom of the telescopic block (52), and a pressure roller (55) is movably connected to the lower inner side of the connecting block (54).

3. The waterproof structure of the electrical control box according to claim 2, characterized in that: The upper outer side of the telescopic block (52) is T-shaped.

4. The waterproof structure of the electrical control box according to claim 1, characterized in that: The specific structure of the pull-down mechanism (9) includes a clamping screw (91), a pull-down clamp (92), a slide groove (93), and a tension spring (94). The high-voltage water shield (3) has a sliding groove (93) on both the front and rear surfaces inside, and a pull-down clamp (92) is movably connected to the inner side of the sliding groove (93). The bottom sides of the pull-down clamp (92) are connected to the lower side of the corresponding slide groove (93) by a tension spring (94); The clamping screw (91) is movably connected in the threaded hole provided on the upper left side of the high-voltage water shield (3), and the inner and outer sides of the clamping screw (91) are connected to the inner side of the upper left side of the pull-down clamp (92).

5. The waterproof structure of the electrical control box according to claim 4, characterized in that: The inner side of the pull-down clamp (92) is arc-shaped.

6. The waterproof structure of the electrical control box according to claim 1, characterized in that: The specific structure of the pull-up mechanism (10) includes a frame (101), a second slide groove (102), a second tension spring (103), a pull-up clamp (104), a slot block (105), and a second clamping screw (106). The frame (101) is fixedly connected to the inner side of the electrical control box (1), and vertical sliding grooves (102) are provided at the front and rear positions inside the frame (101). The upper pull clamp (104) is movably connected to the inner side of the corresponding slide groove two (102) on the front and rear exterior respectively. A slot block (105) is fixedly connected to the center of the lower side of the upper pull clamp (104). The two upper sides of the upper pull clamp (104) are connected to the upper side of the corresponding slide groove two (102) through a tension spring two (103). The second clamping screw (106) is movably connected in the threaded hole provided on the lower side of the frame (101), and the inner and outer sides of the second clamping screw (106) are connected to the inner side of the slot block (105).

7. The waterproof structure of the electrical control box according to claim 6, characterized in that: The inner side of the upper pull clamp (104) is arc-shaped.

8. The waterproof structure of the electrical control box according to claim 1, characterized in that: A drainage gap is provided between the lower inner side of the weak current water shield (2) and the strong current water shield (3) and the outer side of the electrical control box (1).

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