Waterproof DC contactor
The combined design of the main DC contactor, outer waterproof cover and sealing gasket solves the problem of rusting of the coil connection points and contact heads of the DC contactor in a high humidity environment, realizes the waterproof performance of the equipment, simplifies maintenance inspections and reduces the failure rate.
Patent Information
- Application Number
- CN202422602242.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-28
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-10-28
AI Technical Summary
In high humidity or water environments, the coil connection points and contact heads of DC contactors are prone to rust, resulting in unstable line connections and high failure rates.
The combination design of main DC contact, outer waterproof cover and sealing gasket is adopted. Through the cooperation of sealing gasket and outer waterproof cover, the main contact joint and coil end are isolated to prevent contact between water vapor and water liquid. Combined with the transparent window for inspection, the failure rate is reduced.
It effectively prevents rust caused by contact between water vapor and liquid, reduces line failure rate, simplifies inspection and maintenance process, and improves equipment reliability in high humidity environments.
Smart Images
Figure CN223333715U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of DC contactors, in particular to a waterproof DC contactor. Background Art
[0002] A DC contactor is a switching device used to control a DC circuit. When current passes through the coil of the contactor, a magnetic field is generated. This magnetic field attracts the iron core, causing the contacts on the iron core to contact the fixed contacts, thereby completing the circuit closure.
[0003] The coil connection points and contact heads of the DC contactor are both set at the top and connected and fastened by nuts and lines. The coil connection points and contact heads of the DC contactor are directly exposed to the outside. When used in an environment with high humidity for a long time, the coil connection points and contact heads of the DC contactor are prone to rust, resulting in short-circuit and unstable line connections of the coil connection points and contact heads of the DC contactor, and a high failure rate. Summary of the Invention
[0004] The disclosed embodiments relate to a waterproof DC contactor, in which a main DC contact, an outer waterproof cover, and a sealing gasket cooperate to perform sealing, and the main contact joint and the coil end are isolated from the outside. The main contact joint and the coil end are connected to the external circuit through a first connecting line and a second connecting line. External water vapor and liquid are blocked by the outer waterproof cover and cannot contact the main contact joint and the coil end, thereby preventing the main contact joint and the coil end from rusting and short-circuiting due to contact with water vapor and liquid, achieving compatibility with high-humidity environments and water environments, and reducing the occurrence rate of faults such as line short circuits.
[0005] In a first aspect of the present disclosure, a waterproof DC contactor is provided, specifically comprising: a main DC contact, an outer waterproof cover and a sealing gasket, wherein the outer waterproof cover is provided on the top of the main DC contact, a sealing gasket is provided between the main DC contact and the outer waterproof cover, side connectors are provided on both sides of the main DC contact, a lower flange is welded to the outer side of the upper part of the main DC contact, a middle partition plate is fixedly provided in the middle of the top of the main DC contact, and main contact connectors and coil ends are provided on both sides of the top of the main DC contact.
[0006] In at least some embodiments, the main contact joint and the coil end are located on both sides of the middle partition plate, the nut of the coil end is pressed and fixed with a first connecting wire, and the nut of the main contact joint is pressed and fixed with a second connecting wire, and the main contact joint and the coil end are connected to the external circuit through the first connecting wire and the second connecting wire.
[0007] In at least some embodiments, an upper flange is provided on the outer side of the lower portion of the outer waterproof cover, fixing bolts are passed through the circular holes of the annular array of the upper flange, and a central transparent window is provided in the middle portion of the outer waterproof cover, through which the main contact joints and coil ends can be checked.
[0008] In at least some embodiments, the fixing bolts and the circular holes of the annular array of the lower flange penetrate each other, and the top of the lower flange fits against the bottom of the sealing gasket.
[0009] In at least some embodiments, the annular array of sealing gaskets has bolt through holes extending vertically in the axial direction, and both sides of the sealing gaskets are provided with line through grooves extending horizontally in the circumferential direction.
[0010] In at least some embodiments, the top of the sealing gasket fits the bottom surface of the upper flange, the fixing bolts and the bolt through holes are connected through, and the fixing bolts are tightened to tightly fit the upper flange, the sealing gasket and the main DC contactor together.
[0011] In at least some embodiments, the first connecting line and the second connecting line are respectively passed through the inner side of the line through-groove, and the outer waterproof cover and the middle transparent window jointly cover the outer side of the middle partition plate, the main contact joint, and the coil end. The main contact joint and the coil end are isolated from the outside by the outer waterproof cover, and the main contact joint and the coil end are connected to the external line through the first connecting line and the second connecting line.
[0012] The utility model provides a waterproof DC contactor, which has the following beneficial effects:
[0013] The main DC contact, the outer waterproof cover and the sealing gasket cooperate to perform sealing, and the main contact joint and the coil end are isolated from the outside. The main contact joint and the coil end are connected to the external circuit through the first connecting line and the second connecting line. The external water vapor and liquid are blocked by the outer waterproof cover and cannot contact the main contact joint and the coil end, so as to avoid the main contact joint and the coil end being rusted and short-circuited by water vapor and water, thereby achieving compatibility with high humidity environment and water environment and reducing the incidence of line failure.
[0014] The main contact joints and coil ends can be checked through the transparent window without removing the outer waterproof cover, which reduces the difficulty of inspection and allows problems with the main contact joints and coil ends to be discovered in time. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments will be briefly introduced below.
[0016] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.
[0017] In the attached figure:
[0018] Figure 1 A schematic diagram showing the overall structure of the present application;
[0019] Figure 2 A schematic diagram showing the cross-sectional structure of the outer waterproof cover and the sealing gasket of the present application is shown;
[0020] Figure 3 A schematic diagram showing the structure of the main DC contactor of the present application is shown;
[0021] Figure 4 A schematic diagram showing the outer waterproof cover structure of the present application is shown;
[0022] Figure 5 A schematic structural diagram of the sealing gasket of the present application is shown;
[0023] Figure 6 A schematic diagram showing the structure of the split state of this application;
[0024] Reference Signs List
[0025] 1. Main DC contactor; 101. Side connector; 102. Lower flange; 103. Middle partition plate; 104. Main contact connector; 105. Coil end; 106. First connecting wire; 107. Second connecting wire;
[0026] 2. External waterproof cover; 201. Upper flange; 202. Fixing bolts; 203. Middle transparent window;
[0027] 3. Sealing gasket; 301. Bolt through hole; 302. Line through groove. DETAILED DESCRIPTION
[0028] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0029] Example 1: Please refer to Figures 1 to 6 :
[0030] The utility model proposes a waterproof DC contactor, comprising: a main DC contact 1, an outer waterproof cover 2 and a sealing gasket 3, side connectors 101 are provided on both sides of the main DC contact 1, a lower flange 102 is welded on the outer side of the upper part of the main DC contact 1, a middle partition plate 103 is fixedly provided on the middle part of the top of the main DC contact 1, a main contact joint 104 and a coil end 105 are provided on both sides of the top of the main DC contact 1, the main contact joint 104 and the coil end 105 are located on both sides of the middle partition plate 103, a nut of the coil end 105 is pressed and fixed with a first connecting wire 106, a nut of the main contact joint 104 is pressed and fixed with a second connecting wire 107, the main contact joint 104 and the coil end 105 are connected to the outside through the first connecting wire 106 and the second connecting wire 107 Line, an outer waterproof cover 2 is provided on the top of the main DC contact 1, and an upper flange 201 is provided on the outer side of the lower part of the outer waterproof cover 2. The circular holes in the annular array of the upper flange 201 are penetrated by fixing bolts 202. A middle transparent window 203 is provided in the middle of the outer waterproof cover 2. The main contact joint 104 and the coil end 105 are maintained and inspected through the middle transparent window 203. There is no need to remove the outer waterproof cover 2, which reduces the difficulty of daily maintenance and inspection. The fixing bolts 202 and the circular holes in the annular array of the lower flange 102 are penetrated, and the top of the lower flange 102 is fitted with the bottom of the sealing gasket 3. A sealing gasket 3 is provided between the main DC contact 1 and the outer waterproof cover 2. The annular array of the sealing gasket 3 has bolt through holes 301 that penetrate axially and vertically, and both sides of the sealing gasket 3 are provided with line through grooves 302 that penetrate circumferentially and horizontally.
[0031] In the embodiment of the present disclosure, the top of the sealing gasket 3 is fitted with the bottom surface of the upper flange 201, the fixing bolt 202 is connected with the bolt through hole 301, and the fixing bolt 202 is tightened to tightly fit the upper flange 201, the sealing gasket 3 and the main DC contact 1 together, thereby achieving a cooperative seal between the main DC contact 1, the outer waterproof cover 2 and the sealing gasket 3.
[0032] In the embodiment of the present disclosure, the first connecting line 106 and the second connecting line 107 are respectively passed through the inner side of the line through groove 302, and the outer waterproof cover 2 and the middle transparent window 203 jointly cover the outer side of the middle partition plate 103, the main contact joint 104, and the coil end 105. The main contact joint 104 and the coil end 105 are isolated from the outside by the outer waterproof cover 2. The main contact joint 104 and the coil end 105 are connected to the external circuit through the first connecting line 106 and the second connecting line 107. The external water vapor and liquid are blocked by the outer waterproof cover 2 and cannot contact the main contact joint 104 and the coil end 105, thereby avoiding the main contact joint 104 and the coil end 105 from rusting and short-circuiting due to long-term contact with the water vapor and liquid environment.
[0033] Example 2: Based on Example 1, the middle partition plate 103 is covered with a moisture-changing color material. The moisture-changing color material of the middle partition plate 103 is used to display the water vapor inside the closed space between the outer waterproof cover 2 and the main DC contact 1, and check the sealing condition of the closed space between the outer waterproof cover 2 and the main DC contact 1. If there is a problem with the sealing, the moisture-changing color of the middle partition plate 103 will change color to warn and timely maintenance is carried out.
[0034] The working principle of this embodiment is as follows: the main DC contact 1 is fixed in position by connecting bolts through the side connector 101, the main contact connector 104 and the coil end 105 of the main DC contact 1 are connected to the external circuit through the first connecting wire 106 and the second connecting wire 107, and the connection is waterproof and sealed by a waterproof connection box, the fixing bolt 202 passes through the upper flange 201 of the outer waterproof cover 2 and the bolt through hole 301 of the sealing gasket 3 and the lower flange 102 of the main DC contact 1, and the fixing bolt 202 is tightened to tightly fit the upper flange 201 and the sealing gasket 3 and the main DC contact 1 together, so that the main DC contact 1, the outer waterproof cover 2 and The sealing gasket 3 cooperates to seal, and the outer waterproof cover 2 covers the main contact joint 104, the coil end 105 and the outside of the middle partition plate 103. The main contact joint 104 and the coil end 105 are isolated from the outside. The main contact joint 104 and the coil end 105 are connected to the external circuit through the first connecting line 106 and the second connecting line 107. The external water vapor and liquid are blocked by the outer waterproof cover 2 and cannot contact the main contact joint 104 and the coil end 105, thereby preventing the main contact joint 104 and the coil end 105 from rusting and short-circuiting due to long-term contact with water vapor and water, thereby achieving compatibility with high humidity environment and water environment, and reducing the incidence of faults such as short circuit;
[0035] The main contact joint 104 and the coil end 105 can be inspected through the middle transparent window 203 without removing the outer waterproof cover 2, which reduces the difficulty of daily maintenance and inspection of the main contact joint 104 and the coil end 105, and timely discovers problems such as rust and short circuit of the main contact joint 104 and the coil end 105.
[0036] In this article, there are several points to note:
[0037] 1. The drawings of the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure. Other structures may refer to conventional designs.
[0038] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to form new embodiments.
[0039] The above are only specific embodiments of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.
Claims
1. A waterproof DC contactor, comprising: A main DC contact (1), an outer waterproof cover (2) and a sealing gasket (3); characterized in that the outer waterproof cover (2) is provided on the top of the main DC contact (1), a sealing gasket (3) is provided between the main DC contact (1) and the outer waterproof cover (2), side connectors (101) are provided on both sides of the main DC contact (1), a lower flange (102) is welded on the outer side of the upper part of the main DC contact (1), an upper flange (201) is provided on the outer side of the lower part of the outer waterproof cover (2), fixing bolts (202) are passed through the circular holes of the annular array of the upper flange (201), and a middle transparent window (203) is opened in the middle of the outer waterproof cover (2).
2. A waterproof DC contactor according to claim 1, characterized in that: A middle partition plate (103) is fixedly provided at the middle of the top of the main DC contact (1), and main contact joints (104) and coil ends (105) are provided on both sides of the top of the main DC contact (1).
3. A waterproof DC contactor according to claim 2, characterized in that: The main contact joint (104) and the coil end (105) are located on both sides of the middle partition plate (103); the nut of the coil end (105) is pressed and fixed with a first connecting wire (106); and the nut of the main contact joint (104) is pressed and fixed with a second connecting wire (107).
4. A waterproof DC contactor according to claim 3, characterized in that: The fixing bolts (202) and the circular holes of the annular array of the lower flange (102) are passed through, and the top of the lower flange (102) and the bottom of the sealing gasket (3) are fitted together.
5. The waterproof DC contactor according to claim 4, characterized in that: The annular array of the sealing gasket (3) has bolt through holes (301) that penetrate axially and vertically, and both sides of the sealing gasket (3) are provided with line through grooves (302) that penetrate circumferentially and horizontally.
6. The waterproof DC contactor according to claim 5, characterized in that: The top of the sealing gasket (3) is fitted with the bottom surface of the upper flange (201), and the fixing bolts (202) and the bolt through holes (301) are connected through them.
7. The waterproof DC contactor according to claim 6, characterized in that: The first connecting line (106) and the second connecting line (107) are respectively passed through the inner side of the line through-groove (302), and the outer waterproof cover (2) and the middle transparent window (203) are jointly covered on the outer side of the middle partition plate (103), the main contact joint (104), and the coil end (105).