Moisture-proof junction box for controller

Abstract

The utility model provides a moisture-proof junction box for a controller, which comprises a controller junction box, a plurality of wiring ports arranged outside the controller junction box and cables arranged inside the wiring ports, and sealing assemblies for improving the moisture-proof effect of the controller junction box are arranged on the wiring ports. The sealing assembly comprises a connector lug arranged on the wiring port, a fixing ring is arranged in the connector lug, fixing pieces are arranged on the upper side and the lower side of the fixing ring, a sealing plate is arranged on one side of each fixing piece, and the sealing plates are tightly attached to the cable. The primary sealing effect can be achieved by arranging the sealing plate, the fixing ring, the threaded rod, the nut and other structures, and the sealing plate can be tightly attached to the cable through cooperative use of the nut and the threaded rod, so that the situation that moisture enters the junction box from a gap between the cable and the fixing ring, and consequently parts in the cable and the controller are affected with damp is avoided; in addition, the secondary sealing effect is achieved by arranging a threaded connector, a movable ring, a sealing piece and other structures.

Description

Technical Field

[0001] This utility model relates to the field of junction box technology, and more specifically, to a moisture-proof junction box for a controller. Background Technology

[0002] A controller is a master control device that controls the starting, speed regulation, braking, and reversing of a motor by changing the wiring of the main circuit or control circuit and changing the resistance value in the circuit according to a predetermined sequence. To protect the cables connected to the controller, a junction box is usually installed. The junction box is typically used at the cable joint, serving as a dustproof function and preventing the cable joint from loosening. In existing technologies, the junction box and cable interface usually have a small hole for the cable to pass through, making it easy for moisture to enter at the junction box and cable interface. This can cause the cables inside the junction box to become damp and may also lead to short circuits in the internal components of the controller, affecting its use. Therefore, this utility model proposes a moisture-proof junction box for controllers to solve the above problems. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this utility model provides a moisture-proof junction box for controllers, which has advantages such as good moisture-proof effect and solves the problem of poor moisture-proof effect of existing devices.

[0005] (II) Technical Solution

[0006] To achieve the aforementioned goal of improving the moisture-proof effect of the junction box, this utility model provides the following technical solution: a moisture-proof junction box for a controller, comprising a controller junction box, multiple wiring ports disposed on the outside of the controller junction box, and a cable disposed inside the wiring ports. A sealing assembly for improving the moisture-proof effect of the controller junction box is provided on each wiring port. The sealing assembly includes a connector disposed on the wiring port, a retaining ring disposed inside the connector, and retaining members disposed on both the upper and lower sides of the retaining ring. A sealing plate is disposed on one side of the retaining member, and the sealing plate is tightly fitted to the cable.

[0007] One end of the connector is fixedly provided with a threaded joint, and the external thread of the threaded joint is provided with a movable ring. One end of the movable ring is rotatably provided with a connecting ring. One side of the connecting ring is provided with a plurality of sealing plates distributed circumferentially at equal intervals. One side of the sealing plate is tightly fitted with the cable, and the other side of the sealing plate is tightly fitted with the inside of the threaded joint.

[0008] In an embodiment of this utility model, the other end of the sealing sheet is designed with an arc surface, and both the sealing sheet and the sealing plate are made of rubber.

[0009] In an embodiment of this utility model, threaded rods are provided on both sides of the upper and lower fixing members, and nuts are threaded to both ends of the threaded rods, with the nuts tightly fitted to the fixing members.

[0010] In an embodiment of this utility model, the middle position of the fixing member is arc-shaped, and circular holes are provided on both sides of the fixing member, through which the threaded rod passes.

[0011] In an embodiment of this utility model, a spring is sleeved on the outside of the threaded rod, and the two ends of the spring abut against the two fixing members respectively.

[0012] In an embodiment of this utility model, a baffle is provided at the end of the threaded rod, and the other end of the baffle is fixed to the connector.

[0013] In an embodiment of this utility model, fixing holes are provided on both sides of the connector, and the two ends of the fixing member pass through the two fixing holes respectively.

[0014] In an embodiment of this utility model, arc-shaped holes are provided on both the upper and lower sides of the fixing ring, and the sealing plate is clearance-fitted with the arc-shaped holes and extends into the interior of the fixing ring.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention achieves a preliminary sealing effect by incorporating a sealing plate, a fixing ring, a threaded rod, and a nut. The nut and threaded rod work together to ensure a tight seal between the sealing plate and the cable, preventing moisture from entering the junction box through the gap between the cable and the fixing ring, thus preventing moisture damage to the cable and internal components of the controller. Furthermore, a secondary sealing effect is achieved by incorporating a threaded joint, a movable ring, and a sealing plate. Rotating the movable ring allows the sealing plate to be inserted into the threaded joint, filling any gaps and preventing moisture from entering the controller junction box, effectively improving the moisture-proof performance.

[0017] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This utility model provides an overall structural schematic diagram of its embodiments;

[0020] Figure 2 A schematic diagram of the connector structure provided for an embodiment of this utility model;

[0021] Figure 3 A schematic diagram of the connector and retaining ring provided for an embodiment of this utility model;

[0022] Figure 4 A schematic diagram of the connection structure between the fixing member and the sealing plate provided in this embodiment of the utility model;

[0023] Figure 5 An exploded structural diagram of the threaded joint and movable ring provided for an embodiment of this utility model.

[0024] In the diagram: 10, controller junction box; 20, wiring port; 30, cable; 40, connector; 4001, retaining ring; 4002, fastener; 4003, sealing plate; 4004, circular hole; 4005, threaded rod; 4006, spring; 4007, nut; 4008, baffle; 4009, fixing hole; 41, threaded connector; 4101, movable ring; 4102, connecting ring; 4103, sealing plate. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0027] Please see Figure 1-5 This utility model provides a technical solution: a moisture-proof junction box for a controller, including a controller junction box 10, multiple connection ports 20 disposed on the outside of the controller junction box 10, and a cable 30 disposed inside the connection ports 20. The connection ports 20 are provided with a sealing component to improve the moisture-proof effect of the controller junction box 10. The sealing component includes a connector 40 disposed on the connection port 20. A fixing ring 4001 is disposed inside the connector 40. Fixing members 4002 are disposed on both the upper and lower sides of the fixing ring 4001. A sealing plate 4003 is disposed on one side of the fixing member 4002. The sealing plate 4003 is tightly fitted with the cable 30.

[0028] In this embodiment, a threaded connector 41 is fixedly provided at one end of the connector 40. A movable ring 4101 is provided on the external thread of the threaded connector 41. A connecting ring 4102 is rotatably provided at one end of the movable ring 4101. A plurality of sealing plates 4103 are provided on one side of the connecting ring 4102, which are circumferentially distributed. One side of the sealing plate 4103 is tightly fitted with the cable 30, and the other side of the sealing plate 4103 is tightly fitted with the inside of the threaded connector 41.

[0029] The other end of the sealing plate 4103 is designed with an arc surface, which makes it easy to insert the sealing plate 4103 into the threaded joint 41. Both the sealing plate 4103 and the sealing plate 4003 are made of rubber. The rubber material has good elasticity and plasticity, and can withstand compression deformation within a certain range and return to its original shape, which can ensure the sealing performance of the sealing ring and thus achieve a good moisture-proof effect.

[0030] In this embodiment, threaded rods 4005 are provided on both sides of the upper and lower fixing members 4002. Nuts 4007 are threaded to both ends of the threaded rods 4005. The nuts 4007 are tightly fitted with the fixing members 4002. After the cable 30 is installed into the controller junction box 10, rotating the nuts 4007 can push the fixing members 4002 to move closer to the fixing ring 4001, and make the sealing plate 4003 tightly wrap the cable 30. This can improve the moisture-proof effect and fix the cable 30, preventing the cable 30 joint from loosening and affecting its use.

[0031] Meanwhile, the middle position of the fastener 4002 is arc-shaped, which allows the fastener 4002 to fit more closely with the outer circumference of the fixing ring 4001. Both sides of the fastener 4002 are provided with circular holes 4004, and the threaded rod 4005 passes through the circular holes 4004. The diameter of the circular holes 4004 is larger than the diameter of the threaded rod 4005, and the threaded rod 4005 is slidably connected to the circular holes 4004.

[0032] It should be noted that a spring 4006 is sleeved on the outside of the threaded rod 4005. The two ends of the spring 4006 abut against the two fixing parts 4002 respectively. The elastic potential energy of the spring 4006 can make the fixing parts 4002 automatically reset when the rotating nut 4007 moves to the side closer to the baffle 4008, which makes it easy to remove the cable 30 from the controller junction box 10.

[0033] It is understandable that a baffle 4008 is provided at the end of the threaded rod 4005, and the other end of the baffle 4008 is fixed to the terminal 40. The baffle 4008 can support and fix the threaded rod 4005, and at the same time prevent the nut 4007 from falling off the end of the threaded rod 4005.

[0034] In addition, fixing holes 4009 are provided on both sides of the connector 40, and the two ends of the fixing member 4002 pass through the two fixing holes 4009 respectively, and the fixing member 4002 can move up and down within the fixing holes 4009.

[0035] It should be emphasized that the upper and lower sides of the fixing ring 4001 are provided with arc-shaped holes, and the sealing plate 4003 is fitted with the arc-shaped holes with a clearance and extends into the interior of the fixing ring 4001.

[0036] Specifically, the working principle of this moisture-proof junction box used in controllers is as follows:

[0037] In use, first thread the cable 30 through the movable ring 4101 and align the cable 30 with the connector 40 before inserting it into the controller junction box 10. After the cable 30 is fixedly installed inside the controller junction box 10, rotate the nut 4007 to move it away from the baffle 4008. During this process, the fixing part 4002 moves closer to the fixing ring 4001. During this movement, the fixing part 4002 pushes the sealing plate 4003 to fit tightly against the cable 30, thereby preventing moisture from entering the controller junction box 10 through the gap between the cable 30 and the fixing ring 4001, which would cause the cable 30 and the internal parts of the controller to become damp. Then, rotate the movable ring 4101 to fix it to the threaded connector 41. During this process, the sealing plate 4103 is inserted into the threaded connector 41 to fill the gap, preventing moisture from entering the controller junction box 10. By setting up a double sealing operation, the moisture-proof effect can be effectively improved, effectively protecting the cable 30 and the internal parts of the controller.

[0038] It should be noted that the specific model and specifications of the controller junction box 10, cable 30, sealing plate 4003, and sealing sheet 4103 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0039] 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.

[0040] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0041] 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 connection 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.

[0042] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A moisture-proof type terminal box for a controller, comprising a controller terminal box (10), a plurality of terminal ports (20) provided outside the controller terminal box (10), and a cable (30) provided inside the terminal port (20), characterized in that: The sealing assembly is arranged on the terminal (20) to improve the moisture-proof effect of the controller terminal box (10), and the sealing assembly comprises a terminal head (40) arranged on the terminal (20), the inside of the terminal head (40) is provided with a fixing ring (4001), the upper and lower sides of the fixing ring (4001) are provided with fixing members (4002), one side of the fixing member (4002) is provided with a sealing plate (4003), and the sealing plate (4003) is tightly attached to the cable (30). One end of the terminal head (40) is fixedly provided with a threaded joint (41), the outer thread of the threaded joint (41) is provided with a movable ring (4101), one end of the movable ring (4101) is rotatably provided with a connecting ring (4102), one side of the connecting ring (4102) is provided with a plurality of sealing sheets (4103) which are circumferentially and equidistantly distributed, one side of the sealing sheet (4103) is tightly attached to the cable (30), and the other side of the sealing sheet (4103) is tightly attached to the inside of the threaded joint (41).

2. The moisture-proof terminal block for a controller according to claim 1, wherein The other end of the sealing sheet (4103) is designed as an arc surface, and the sealing sheet (4103) and the sealing plate (4003) are both made of rubber.

3. The moisture-proof terminal block for a controller according to claim 1, wherein Both sides of the two fixing members (4002) are provided with threaded rods (4005), and the upper and lower ends of the threaded rods (4005) are both threadedly connected with nuts (4007) which are tightly attached to the fixing members (4002).

4. The moisture-proof terminal block for a controller according to claim 3, wherein The middle position of the fixing member (4002) is designed as an arc, and both sides of the fixing member (4002) are provided with circular holes (4004) through which the threaded rods (4005) pass.

5. The moisture-proof terminal block for a controller according to claim 3, wherein The outside of the threaded rod (4005) is sleeved with a spring (4006), and the two ends of the spring (4006) abut against the two fixing members (4002) respectively.

6. The moisture-proof terminal block for a controller according to claim 5, wherein The end of the threaded rod (4005) is provided with a baffle (4008), and the other end of the baffle (4008) is fixed to the terminal head (40).

7. The moisture-proof terminal block for a controller according to claim 5, wherein Both sides of the terminal head (40) are provided with fixing holes (4009) through which the two ends of the fixing member (4002) pass.

8. The moisture-proof junction box for a controller according to claim 5, wherein The upper and lower sides of the fixing ring (4001) are provided with arc-shaped holes, the sealing plate (4003) is gap-fitted with the arc-shaped holes and extends into the inside of the fixing ring (4001).

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