Ablation-resistant static contact

Abstract

The utility model relates to the technical field of static contacts, and discloses an ablation-resistant static contact, which comprises a substrate, a mounting hole arranged on the surface of the substrate, a contact plate fixed on the surface of the top of the substrate, a limiting plate fixed on the surface of the top of the substrate, a placement assembly arranged on the surface of the limiting plate, and an arc extinguishing mechanism arranged on the surface of the placement assembly. The arc extinguishing mechanism comprises a screw, a transverse plate and an arc extinguishing grid piece, the screw is arranged on the surface of the placement assembly, the transverse plate is connected to the surface of the screw in a threaded and sleeved mode, the arc extinguishing grid piece is fixed to the side wall of the transverse plate, and a fixing part is arranged on the surface of the placement assembly. When the device is used, the arc extinguishing mechanism can be used for extinguishing the arc, the ablation resistance of the device is improved, and the damaged arc extinguishing grid plate can be replaced, so that the problem that the arc of the existing device is ablated and damaged after exceeding the bearing range of the static contact is solved.

Description

A type of ablation resistant stationary contact Technical Field

[0001] This utility model relates to the field of stationary contact technology, specifically to an ablation-resistant stationary contact. Background Technology

[0002] Stationary contacts are a very common electronic component in the electrical field. By combining them with moving contacts, circuits can be closed, thus ensuring the smooth flow of the circuit and achieving the intended goals of the power system.

[0003] However, when existing moving and stationary contacts separate, the free charges near the separation point will touch and form an electric arc. These electric arcs will remain on the surface of the stationary contact, increasing its surface temperature. When the temperature exceeds the surface tolerance of the stationary contact, it will ablate and destroy the stationary contact. Therefore, an ablation-resistant stationary contact is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide an ablation-resistant stationary contact to solve the problem mentioned in the background art that when existing moving and stationary contacts separate, free charges near the separation point will touch and form an electric arc. These electric arcs will be free on the surface of the stationary contact, increasing its surface temperature. When the temperature exceeds the surface tolerance of the stationary contact, it will ablate and destroy the stationary contact.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an ablation-resistant static contact, comprising a substrate, mounting holes formed on the surface of the substrate, a contact plate fixed to the top surface of the substrate, a limiting plate fixed to the top surface of the substrate, a mounting assembly disposed on the surface of the limiting plate, an arc-extinguishing mechanism disposed on the surface of the mounting assembly, the arc-extinguishing mechanism comprising a screw, a horizontal plate, and an arc-extinguishing grid, the screw being disposed on the surface of the mounting assembly, the horizontal plate being threadedly sleeved on the surface of the screw, the arc-extinguishing grid being fixed to the side wall of the horizontal plate, and a fixing component disposed on the surface of the mounting assembly.

[0006] Preferably, the aforementioned mounting component includes a sliding plate, a groove, and a threaded hole. The sliding plate slides against the surface of the substrate, and the side of the sliding plate is in contact with the inner side of the limiting plate. The groove is located on one side of the bottom of the sliding plate, and the threaded hole is located on the bottom of the sliding plate.

[0007] Preferably, the screws and cross plates are symmetrically distributed about the longitudinal central axis of the arc-extinguishing grid plate, and the screws are threadedly connected to the bottom outer wall of the slide plate.

[0008] Preferably, two limiting plates are provided, and the two limiting plates are symmetrically distributed about the lateral central axis of the slide plate.

[0009] Preferably, the arc-extinguishing mechanism described above is provided in several groups, and the several groups of arc-extinguishing mechanisms are distributed at equal intervals on the slide plate.

[0010] Preferably, the aforementioned fixing component includes a sealing plate, an elastic steel sheet, and a protrusion. The sealing plate is hinged to the surface of the slide plate, the elastic steel sheet is fixed to the side of the sealing plate, and the protrusion is fixed to the top surface of the elastic steel sheet.

[0011] Preferably, the protrusion is engaged inside the groove, and the surface of the protrusion is arc-shaped.

[0012] Compared with the prior art, the present invention, by adopting the above technical solution, has the following technical effects:

[0013] This invention, through the cooperation of the substrate, mounting holes, contact plate, limiting plate, mounting components and arc extinguishing mechanism, enables the device to extinguish electric arcs with the help of the arc extinguishing mechanism during practical use, thereby improving the device's resistance to ablation and allowing for the replacement of damaged arc extinguishing grid plates. This solves the problem that existing devices will suffer ablation damage when the electric arc exceeds the static contact's tolerance range.

[0014] This invention allows the placement component and the fixing component to work together, enabling the placement component to be separated from the substrate, thus facilitating subsequent sorting and recycling. Furthermore, when the placement component needs to be replaced, it does not need to be replaced along with the substrate, reducing replacement costs. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 is an enlarged structural schematic diagram of point A in Figure 1 of this utility model;

[0018] Figure 3 is a three-dimensional structural diagram of the mounting component of this utility model;

[0019] Figure 4 is a three-dimensional structural schematic diagram of the arc extinguishing mechanism of this utility model;

[0020] Figure 5 is a three-dimensional structural diagram of the fixing component of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Mounting hole; 3. Contact plate; 4. Limiting plate; 5. Mounting component; 501. Slide plate; 502. Groove; 503. Threaded hole; 6. Arc extinguishing mechanism; 601. Screw; 602. Horizontal plate; 603. Arc extinguishing grid plate; 7. Fixing component; 701. Sealing plate; 702. Elastic steel sheet; 703. Protrusion. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] It should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the implementation of this application and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this application, should still fall within the scope of the technical content disclosed in this application. Examples

[0024] In the existing technology, when the existing moving and stationary contacts separate, the free charges near the separation point will touch each other and form an electric arc. These electric arcs will be free on the surface of the stationary contact, increasing its surface temperature. When the temperature exceeds the surface tolerance of the stationary contact, it will ablate it, thereby destroying the stationary contact.

[0025] Please refer to Figures 1-5. This utility model provides a technical solution: an ablation-resistant static contact, including a base plate 1. The surface of the base plate 1 has mounting holes 2. A contact plate 3 is fixed to the top surface of the base plate 1. A limiting plate 4 is fixed to the top surface of the base plate 1. A mounting assembly 5 is provided on the surface of the limiting plate 4. To extinguish the electric arc and enhance the ablation resistance of the device, an arc-extinguishing mechanism 6 is provided on the surface of the mounting assembly 5. The arc-extinguishing mechanism 6 includes a screw 601, a horizontal plate 602, and an arc-extinguishing grid 603. The screw 601 is disposed on the surface of the mounting assembly 5, the horizontal plate 602 is threaded onto the surface of the screw 601, and the arc-extinguishing grid 603 is fixed to the contact plate 3. The sidewall of the horizontal plate 602 and the arc-extinguishing grid plate 603 are made of polyvinyl chloride. The surface of the mounting component 5 is provided with a fixing component 7. In order to enhance the ablation resistance of the device, the surfaces of the horizontal plate 602, the substrate 1 and the slide plate 501 are all coated with a silver layer. In order to assemble the arc-extinguishing mechanism 6 with the substrate 1, a mounting component 5 is provided. The mounting component 5 includes a slide plate 501, a groove 502 and a threaded hole 503. The slide plate 501 slides against the surface of the substrate 1. The side of the slide plate 501 is in contact with the inner side of the limiting plate 4. The groove 502 is opened on one side of the bottom of the slide plate 501 and the threaded hole 503 is opened on the bottom of the slide plate 501.

[0026] To facilitate the replacement of damaged arc-extinguishing grid plates 603, screws 601 and horizontal plates 602 are symmetrically distributed about the longitudinal central axis of the arc-extinguishing grid plates 603. Screws 601 are threaded to the bottom outer wall of the sliding plate 501. To ensure the sliding plate 501 can be fixed in a fixed position on the surface of the substrate 1, two limiting plates 4 are provided, symmetrically distributed about the transverse central axis of the sliding plate 501. To enhance the device's ablation resistance, several sets of arc-extinguishing mechanisms 6 are provided. The slide plate 501 is evenly spaced. In order to fix the mounting component 5 to the surface of the substrate 1, a fixing component 7 is provided. The fixing component 7 includes a sealing plate 701, an elastic steel sheet 702 and a protrusion 703. The sealing plate 701 is hinged to the surface of the slide plate 501, the elastic steel sheet 702 is fixed to the side of the sealing plate 701, and the protrusion 703 is fixed to the top surface of the elastic steel sheet 702. In order to increase the stability of the sealing plate 701, the protrusion 703 is engaged in the interior of the groove 502, and the surface of the protrusion 703 is arc-shaped.

[0027] The base plate 1, mounting hole 2 and contact plate 3 together form the stationary contact body. The model of the stationary contact body is LC1E500 (this model itself has excellent ablation resistance), and its supplier is Guangzhou Zhexin Electric Co., Ltd. The model of the arc extinguishing grid plate 603 is CM3, and its supplier is Yueqing Hexie Electric Co., Ltd.

[0028] In terms of working principle or structural principle, if an electric arc is formed on the surface of the stationary contact body during daily use, these electric arcs will wander around the surface of the substrate 1. Some of the electric arcs will wander along the slide plate 501 to the surface of the arc extinguishing grid 603. These electric arcs will be absorbed and extinguished by the insulation of the arc extinguishing grid 603 itself, thereby reducing the total amount of electric arcs on the surface of the substrate 1 and enhancing its ablation resistance.

[0029] If it is necessary to replace a certain arc-extinguishing grid 603, the operator can rotate the sealing plate 701 to separate the protrusions 703 on its surface from the grooves 502, thereby releasing the locking relationship between the sealing plate 701 and the sliding plate 501 and the substrate 1. The operator can then remove the sliding plate 501 along with the arc-extinguishing grid 603 on its surface from the substrate surface. With the help of tools, the operator can remove the screws 601 and separate the arc-extinguishing grid 603 from the surface of the sliding plate 501. Then, a new arc-extinguishing grid 603 can be installed.

[0030] In summary, this device has advantages such as excellent resistance to ablation and easy replacement of parts.

[0031] Those skilled in the art will understand that the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in this utility model. In particular, the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways without departing from the spirit and teachings of this utility model. All such combinations and / or combinations fall within the scope of this utility model.

Claims

1. An ablation-resistant stationary contact, comprising a substrate (1), characterized in that: The substrate (1) has mounting holes (2) on its surface. A contact plate (3) is fixed on the top surface of the substrate (1). A limiting plate (4) is fixed on the top surface of the substrate (1). A placement component (5) is provided on the surface of the limiting plate (4). An arc extinguishing mechanism (6) is provided on the surface of the placement component (5). The arc extinguishing mechanism (6) includes a screw (601), a horizontal plate (602), and an arc extinguishing grid plate (603). The screw (601) is located on the surface of the placement component (5). The horizontal plate (602) is threaded onto the surface of the screw (601). The arc extinguishing grid plate (603) is fixed to the side wall of the horizontal plate (602). A fixing component (7) is provided on the surface of the placement component (5).

2. The ablation-resistant stationary contact according to claim 1, characterized in that: The mounting component (5) includes a sliding plate (501), a groove (502) and a threaded hole (503). The sliding plate (501) slides against the surface of the substrate (1). The side of the sliding plate (501) is in contact with the inner side of the limiting plate (4). The groove (502) is opened on one side of the bottom of the sliding plate (501), and the threaded hole (503) is opened on the bottom of the sliding plate (501).

3. The ablation-resistant stationary contact according to claim 2, characterized in that: The screw (601) and the cross plate (602) are symmetrically distributed about the longitudinal central axis of the arc extinguishing grid plate (603), and the screw (601) is threaded to the bottom outer wall of the slide plate (501).

4. The ablation-resistant stationary contact according to claim 2, characterized in that: There are two limiting plates (4), and the two limiting plates (4) are symmetrically distributed about the transverse central axis of the slide plate (501).

5. The ablation-resistant stationary contact according to claim 2, characterized in that: The arc extinguishing mechanism (6) is provided in several groups, and the several groups of arc extinguishing mechanisms (6) are distributed at equal intervals on the slide plate (501).

6. The ablation-resistant stationary contact according to claim 1, characterized in that: The fixing component (7) includes a sealing plate (701), an elastic steel sheet (702), and a protrusion (703). The sealing plate (701) is hinged to the surface of the sliding plate (501), the elastic steel sheet (702) is fixed to the side of the sealing plate (701), and the protrusion (703) is fixed to the top surface of the elastic steel sheet (702).

7. The ablation-resistant stationary contact according to claim 6, characterized in that: The protrusion (703) is engaged inside the groove (502), and the surface of the protrusion (703) is arc-shaped.

Images