High-insulating-performance auxiliary contact structure of direct-current contactor

Abstract

The utility model relates to the technical field of direct current contactors, and discloses a direct current contactor high insulation performance auxiliary contact structure, which solves the problems of direct current contactors in the current market, and comprises a shielding shell, a top plate arranged on the top of the shielding shell, and a protection mechanism arranged on one side of the shielding shell. The protection mechanism comprises a hinge, a protection arc-shaped shell and heat dissipation holes, one side of the shielding shell is movably connected with the hinge, and one side of the hinge is movably connected with the protection arc-shaped shell; the protective arc-shaped shell is used for protecting the shielding shell, external force collision caused by the outside to the shielding shell is reduced, moisture is isolated, the influence of static electricity on the direct current contactor is reduced through the anti-static coating, and meanwhile the protective arc-shaped shell is made of light high-strength engineering plastic and has good impact resistance, vibration resistance and moisture resistance. And meanwhile, the clamping plates are attached to the two side walls of the mounting box or the mounting box, so that the stability of the direct current contactor after mounting can be improved after the clamping plates are attached to the two side walls of the mounting box or the mounting box.

Description

Technical Field

[0001] The utility model belongs to the technical field of direct current contactors, and more specifically, particularly relates to a high-insulation performance auxiliary contact structure of a direct current contactor. Background Art

[0002] DC contactors have the characteristics of high load capacity, good durability, high reliability, etc., and are widely used in various DC circuit control occasions. The high insulation performance auxiliary contact structure of DC contactors is to ensure that in the DC circuit, there is excellent insulation performance between the contacts, thereby preventing current leakage or short circuit.

[0003] In the prior art, the authorization publication number "CN217061924U" discloses a "high-insulation performance auxiliary contact structure for a DC contactor"; it includes: a shielding shell and an auxiliary static spring sheet, an auxiliary dynamic spring sheet and an auxiliary insulating push rod that can move up and down and are arranged on the shielding shell, the auxiliary insulating push rod can be pushed upward by the dynamic contact assembly in the DC contactor to drive the auxiliary dynamic spring sheet to contact and conduct with the auxiliary static spring sheet to trigger a signal; the auxiliary insulating push rod is provided with an annular concave-convex structure around the periphery to form a creepage path along its outer edge on the concave-convex structure. The DC contactor high-insulation performance auxiliary contact structure can increase the creepage distance between the main contact and the auxiliary dynamic spring sheet and the auxiliary static spring sheet, improve its insulation performance, will not increase the product volume, avoid affecting customer use, and save product manufacturing costs.

[0004] The above-mentioned "a DC contactor high insulation performance auxiliary contact structure" still has some disadvantages, for example: when the outer shell of the existing DC contactor high insulation performance auxiliary contact structure is used, it is easy for moisture to enter the panel on one side of the outer shell if it is placed in a dark place for a long time. At the same time, high humidity may cause condensation inside the shell, which may cause short circuit and other problems. In addition, during use, the DC contactor is easy to become loose after installation, which increases the risk of contact failure.

[0005] For this reason, a DC contactor with high insulation performance auxiliary contact structure is proposed here to solve the above-mentioned problems. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a DC contactor auxiliary contact structure with high insulation performance to solve the problems raised in the above background technology that high humidity may cause condensation inside the shell, thereby causing a short circuit, and during use, the DC contactor is prone to loosening after installation, increasing the risk of contact failure.

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: a high-insulation auxiliary contact structure of a DC contactor, including a shielding shell, a top plate is arranged on the top of the shielding shell, a protective mechanism is arranged on one side of the shielding shell, the protective mechanism includes a hinge, a protective arc shell and a heat dissipation hole, one side of the shielding shell is movably connected with a hinge, one side of the hinge is movably connected with a protective arc shell, one side of the protective arc shell is provided with a heat dissipation hole, and the inner side of the protective arc shell is fixedly connected with an anti-static coating.

[0008] Preferably: a stabilizing mechanism is provided on both sides of the shielding shell, and the stabilizing mechanism includes an arc plate, a threaded sleeve and a threaded rod. The two sides of the shielding shell are fixedly connected with the arc plate, one side of the arc plate is fixedly connected with the threaded sleeve, and the inner side of the threaded sleeve is threadedly connected with the threaded rod.

[0009] Preferably, there are a plurality of heat dissipation holes, and the plurality of heat dissipation holes are arranged in parallel along one side of the protective arc-shaped shell.

[0010] Preferably, a clamping plate is fixedly connected to one side of the threaded rod, a friction block is fixedly connected to the surface of the clamping plate, and there are multiple friction blocks.

[0011] Preferably, an adjustment plate is fixedly connected to the surface of the threaded rod, and one side of the adjustment plate is arranged parallel to one side of the clamping plate.

[0012] Preferably: a metal strip is fixedly connected to one side of the shielding shell, a magnetic groove is fixedly connected to the inner side of the protective arc shell, and one side of the magnetic groove is magnetically connected to one side of the metal strip.

[0013] Compared with the prior art, the utility model provides a DC contactor with high insulation performance auxiliary contact structure, which has the following beneficial effects:

[0014] 1) During the operation of the auxiliary contact structure with high insulation performance of the DC contactor, the protective arc shell is magnetically attached to one side of the shielding shell through the magnetic connection between the metal strip and the magnetic suction groove, thereby protecting one side of the shielding shell and reducing the external force collision caused by the outside world on the shielding shell. At the same time, moisture is isolated, and the heat dissipation holes can be used to maintain air circulation in the protective arc shell. At the same time, the anti-static coating in the protective arc shell can be used to reduce the impact of static electricity on the DC contactor. At the same time, the protective arc shell is made of lightweight and high-strength engineering plastics, and has good impact resistance, vibration resistance and moisture resistance;

[0015] 2) During the operation of the auxiliary contact structure of the DC contactor with high insulation performance, the clamping plate can be adjusted to a suitable distance so that the clamping plate can be fitted with the two side walls of the installation box or installation box. After fitting, the stability of the DC contactor after installation can be improved. At the same time, a large number of friction blocks are evenly fixed on the surface of the clamping plate. The use of multiple friction blocks can increase the friction between the clamping plate and the fitting surface, thereby improving the stability of the DC contactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the overall appearance structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the protective arc shell structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the protection mechanism structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the stabilizing mechanism of the utility model;

[0021] Explanation of the numbers in the figure: 1. Shielding shell; 2. Top plate; 3. Protection mechanism; 301. Hinge; 302. Protective arc shell; 303. Heat dissipation hole; 304. Metal strip; 305. Magnetic suction groove; 306. Antistatic coating; 4. Stabilizing mechanism; 401. Arc plate; 402. Threaded sleeve; 403. Threaded rod; 404. Adjustment plate; 405. Clamping plate; 406. Friction block. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figures 1 to 4The utility model provides a technical solution: a high-insulation auxiliary contact structure of a DC contactor, comprising a shielding shell 1, a top plate 2 is arranged on the top of the shielding shell 1, a protective mechanism 3 is arranged on one side of the shielding shell 1, the protective mechanism 3 comprises a hinge 301, a protective arc shell 302 and a heat dissipation hole 303, one side of the shielding shell 1 is movably connected with the hinge 301, one side of the hinge 301 is movably connected with the protective arc shell 302, one side of the protective arc shell 302 is provided with a heat dissipation hole 303, and the inner side of the protective arc shell 302 is fixedly connected with an anti-static coating 306.

[0024] In this embodiment, a stabilizing mechanism 4 is provided on both sides of the shielding shell 1, and the stabilizing mechanism 4 includes an arc plate 401, a threaded sleeve 402 and a threaded rod 403. The arc plate 401 is fixedly connected to both sides of the shielding shell 1, and the threaded sleeve 402 is fixedly connected to one side of the arc plate 401. The inner side of the threaded sleeve 402 is threadedly connected to the threaded rod 403.

[0025] It should be noted that the distance between the clamping plate 405 and the arc plate 401 is adjusted when the threaded rod 403 is rotated. After the clamping plate 405 is adjusted to a suitable distance, the clamping plate 405 can be fitted with the two side walls of the installation box or installation box.

[0026] In this embodiment, there are multiple heat dissipation holes 303 , and the multiple heat dissipation holes 303 are arranged in parallel along one side of the protective arc-shaped shell 302 .

[0027] It should be noted that the heat dissipation holes 303 can be used to maintain air circulation in the protective arc shell 302 .

[0028] In this embodiment, a clamping plate 405 is fixedly connected to one side of the threaded rod 403 , a friction block 406 is fixedly connected to the surface of the clamping plate 405 , and there are multiple friction blocks 406 .

[0029] It should be noted that the use of multiple friction blocks 406 can increase the friction force between the clamping plate 405 and the fitting surface, thereby improving the stability of the DC contactor.

[0030] In this embodiment, an adjustment plate 404 is fixedly connected to the surface of the threaded rod 403 , and one side of the adjustment plate 404 is arranged parallel to one side of the clamping plate 405 .

[0031] It should be noted that the threaded rod 403 will be driven to rotate by rotating the adjusting plate 404 .

[0032] In this embodiment, a metal strip 304 is fixedly connected to one side of the shielding shell 1 , a magnetic groove 305 is fixedly connected to the inner side of the protective arc shell 302 , and one side of the magnetic groove 305 is magnetically connected to one side of the metal strip 304 .

[0033] It should be noted that, through the magnetic connection between the metal strip 304 and the magnetic attraction groove 305 , the protective arc shell 302 can be magnetically attracted to one side of the shielding shell 1 .

[0034] The specific usage and function of this embodiment: In the daily operation of the auxiliary contact structure of the DC contactor with high insulation performance, the protective arc shell 302 is first lifted up when in use. At this time, the magnetic connection between the metal strip 304 and the magnetic suction groove 305 is separated by the external force. After separation, the protective arc shell 302 can be rotated along the hinge 301, so that one side of the shielding shell 1 can be opened. When the installation is completed and used, the protective arc shell 302 is lowered along the hinge 301. Through the magnetic connection between the metal strip 304 and the magnetic suction groove 305, the shielding shell 1 can be opened. The protective arc shell 302 is magnetically attracted to one side of the shielding shell 1, and protects one side of the shielding shell 1, reducing the external force collision caused by the outside world to the shielding shell 1, and isolating moisture at the same time. The heat dissipation holes 303 can be used to maintain air circulation in the protective arc shell 302. At the same time, the anti-static coating 306 in the protective arc shell 302 can be used to reduce the impact of static electricity on the DC contactor. At the same time, the protective arc shell 302 is made of lightweight and high-strength engineering plastics, and has good impact resistance, vibration resistance and moisture resistance.

[0035] At the same time, when installing the DC contactor in the box or box body, the operator can hold the adjustment plate 404 with his hand and rotate it. By rotating the adjustment plate 404, the threaded rod 403 will be driven to rotate, and the threaded rod 403 is connected along the thread in the threaded sleeve 402, and the distance between the clamping plate 405 and the arc plate 401 can be adjusted when the threaded rod 403 is rotated. After adjusting the clamping plate 405 to a suitable distance, the clamping plate 405 can be fitted with the two side walls of the installation box or installation box position, and the stability of the DC contactor after fitting can be improved. At the same time, a large number of friction blocks 406 are evenly fixed on the surface of the clamping plate 405. The use of multiple friction blocks 406 can increase the friction between the clamping plate 405 and the fitting surface, thereby improving the stability of the DC contactor;

[0036] The contents not described in detail in this specification, such as the shielding shell 1 and the top plate 2, belong to the prior art known to professionals in the field, and are not the key to the present utility model, so they will not be elaborated.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A DC contactor auxiliary contact structure with high insulation performance, comprising a shielding shell (1), characterized in that: A top plate (2) is arranged on the top of the shielding shell (1); a protective mechanism (3) is arranged on one side of the shielding shell (1); the protective mechanism (3) comprises a hinge (301), a protective arc-shaped shell (302) and a heat dissipation hole (303); one side of the shielding shell (1) is movably connected to the hinge (301); one side of the hinge (301) is movably connected to the protective arc-shaped shell (302); one side of the protective arc-shaped shell (302) is provided with a heat dissipation hole (303); and an antistatic coating (306) is fixedly connected to the inner side of the protective arc-shaped shell (302).

2. The DC contactor high insulation performance auxiliary contact structure according to claim 1, characterized in that: Stabilizing mechanisms (4) are provided on both sides of the shielding shell (1), and the stabilizing mechanisms (4) include an arc-shaped plate (401), a threaded sleeve (402) and a threaded rod (403). The arc-shaped plates (401) are fixedly connected to both sides of the shielding shell (1), a threaded sleeve (402) is fixedly connected to one side of the arc-shaped plate (401), and the threaded rod (403) is threadedly connected to the inner side of the threaded sleeve (402).

3. The DC contactor high insulation performance auxiliary contact structure according to claim 2, characterized in that: There are a plurality of heat dissipation holes (303), and the plurality of heat dissipation holes (303) are arranged in parallel along one side of the protective arc-shaped shell (302).

4. The DC contactor high insulation performance auxiliary contact structure according to claim 3, characterized in that: A clamping plate (405) is fixedly connected to one side of the threaded rod (403), a friction block (406) is fixedly connected to the surface of the clamping plate (405), and the friction blocks (406) are multiple in number.

5. The DC contactor high insulation performance auxiliary contact structure according to claim 4, characterized in that: An adjustment plate (404) is fixedly connected to the surface of the threaded rod (403), and one side of the adjustment plate (404) is arranged parallel to one side of the clamping plate (405).

6. The DC contactor high insulation performance auxiliary contact structure according to claim 5, characterized in that: A metal strip (304) is fixedly connected to one side of the shielding shell (1), a magnetic attraction groove (305) is fixedly connected to the inner side of the protective arc shell (302), and one side of the magnetic attraction groove (305) is magnetically connected to one side of the metal strip (304).

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