Adjustable frame arc extinguish chamber

Abstract

The utility model discloses an adjustable frame arc extinguish chamber which comprises two side plates and a plurality of arc extinguish grid sheets installed between the two side plates, a plurality of supporting blocks distributed at equal intervals are integrally formed on adjacent sides of the two side plates, limiting grooves are formed between the adjacent supporting blocks, insertion grooves are formed in the inner side walls of the side plates, and the arc extinguish grid sheets are inserted into the insertion grooves. The side plates and the supporting blocks are provided with a plurality of concave parts, the concave parts are communicated with the inserting grooves and the limiting grooves, clamping grooves are formed in the inner walls of the inserting grooves, two inserting blocks are integrally formed on the two sides of each arc extinguishing grid piece, and clamping blocks matched with the clamping grooves are symmetrically arranged on the outer sides of the inserting blocks. According to the utility model, the positions of the arc extinguishing grid sheets can be adjusted through the insertion blocks, the concave parts, the insertion grooves and the limiting grooves, so that the arc extinguishing grid sheets can be distributed along the motion trail of the moving contact, different side plates do not need to be produced, the practicability is improved, and the arc extinguishing grid sheets can be firmly fixed through the clamping blocks and the clamping grooves.

Description

Technical Field

[0001] The utility model relates to the technical field of arc extinguishing chambers, in particular to an adjustable frame arc extinguishing chamber. Background Art

[0002] The frame arc extinguishing chamber is a key component in the frame circuit breaker, which is mainly composed of arc extinguishing grids and side plates. When the contacts of the frame circuit breaker are separated or contacted, an arc will be generated due to the high voltage and large current between the contacts. The arc is a high-temperature, high-brightness gas discharge phenomenon. If it is not extinguished in time, it will cause damage to the circuit breaker and the power system. The frame arc extinguishing chamber can effectively control and extinguish the arc to protect the safety of equipment and personnel.

[0003] In order to improve the arc extinguishing effect, the existing frame arc extinguishing chamber will distribute the arc extinguishing grid along the movement trajectory of the moving contact during installation. The arc extinguishing grid usually relies on the blocks on both sides to cooperate with the slots on the side plates to fix the arc extinguishing grid. The position of the arc extinguishing grid cannot be adjusted. Since the movement trajectories of the contacts of different models of frame circuit breakers are different, different side plates need to be produced, which has poor practicality. Utility Model Content

[0004] The purpose of the utility model is to provide an adjustable frame arc extinguishing chamber to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an adjustable frame arc extinguishing chamber, comprising two side plates, and a plurality of arc extinguishing grids installed between the two side plates, a plurality of support blocks equidistantly distributed are integrally formed on adjacent sides of the two side plates, and a limiting groove is formed between adjacent support blocks, a slot is provided on the inner side wall of the side plate, and the slot is connected with the adjacent limiting groove, a plurality of recessed portions are provided on the side plate and the support block, the recessed portions are connected with the slot and the limiting groove, a clamping groove is provided on the inner wall of the slot, two plug-in blocks are integrally formed on both sides of the arc extinguishing grid, and clamping blocks matching the slots are symmetrically provided on the outer sides of the plug-in blocks.

[0006] As a preferred solution of the utility model, a slope is provided on one side of the clamping block.

[0007] As a preferred solution of the utility model, a side of the support block away from the side plate is provided with a chamfer.

[0008] As a preferred solution of the utility model, the thickness of the insert block is greater than the thickness of the arc-extinguishing grid.

[0009] As a preferred solution of the present invention, the width of the insert block is equal to the width of the recessed portion.

[0010] Compared with the prior art, the utility model has the following beneficial effects: the utility model can adjust the position of the arc extinguishing grid by means of the provided plug-in blocks, recessed portions, slots and limit slots, so that the arc extinguishing grid is distributed along the movement trajectory of the moving contact, without the need to produce different side panels, thereby improving practicality, and the provided clamping blocks and clamping slots can ensure that the arc extinguishing grid is firmly fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0012] Figure 2 It is a structural schematic diagram of the side panel of the utility model;

[0013] Figure 3 It is a cross-sectional view of the side panel of the utility model;

[0014] Figure 4 It is a structural schematic diagram of the arc-extinguishing grid of the utility model.

[0015] In the figure: 1, side plate; 2, arc extinguishing grid; 3, support block; 4, chamfer; 5, recessed portion; 6, slot; 7, clamping slot; 8, limit slot; 9, insert block; 10, clamping block; 11, inclined surface. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions 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.

[0017] See also Figures 1 to 4The utility model provides a technical solution: an adjustable frame arc extinguishing chamber, comprising two side plates 1, and a plurality of arc extinguishing grids 2 installed between the two side plates 1, a plurality of support blocks 3 distributed at equal distances are integrally formed on the adjacent side of the two side plates 1, and a limiting groove 8 is formed between adjacent support blocks 3, and a part of the arc extinguishing grid 2 will be stuck in the limiting groove 8 after installation, so that the arc extinguishing grid 2 is supported and limited, and the longitudinal displacement between the arc extinguishing grid 2 and the side plate 1 is prevented, and the stability of the installation of the arc extinguishing grid 2 is ensured, and the inner side wall of the side plate 1 is provided with a slot 6, and the insert block 9 can be inserted into the slot 6, so as to fix the arc extinguishing grid 2, and the slot 6 is connected to the adjacent limiting groove 8. A plurality of recessed portions 5 are provided on the side plate 1 and the support block 3, and the recessed portions 5 are communicated with the slot 6 and the limit slot 8. A card slot 7 is provided on the inner wall of the slot 6. Two plug blocks 9 are integrally formed on both sides of the arc extinguishing grid 2, and the distance between two adjacent plug blocks 9 is equal to the width of the recessed portion 5. By inserting the plug blocks 9 into the recessed portions 5 at different positions, the position of the arc extinguishing grid 2 can be adjusted, so that the arc extinguishing grid 2 is distributed along the movement trajectory of the moving contact, and there is no need to produce different side plates 1, thereby improving practicality. Card blocks 10 matching the card slot 7 are symmetrically provided on the outer side of the plug block 9, and the card block 10 is used to be inserted into the card slot 7, thereby fixing the plug block 9, so that the arc extinguishing grid 2 is installed more firmly.

[0018] A slope 11 is provided on one side of the clamping block 10 , and the slope 11 makes it easier for the clamping block 10 to open the supporting block 3 , so as to facilitate the clamping block 10 to be clamped into the clamping slot 7 , thereby reducing the difficulty of installing the arc-extinguishing grid 2 .

[0019] A chamfer 4 is provided on one side of the support block 3 away from the side plate 1 , and the chamfer 4 is used to guide the insert block 9 and the arc-extinguishing grid 2 , so that the insert block 9 and the arc-extinguishing grid 2 are easier to install.

[0020] Among them, the thickness of the plug block 9 is greater than the thickness of the arc extinguishing grid 2, and the thickness of the plug block 9 is equal to the height of the two recessed portions 5 plus the height of the slot 6, so that the recessed portions 5 can limit the plug block 9. When the plug block 9 is inserted into different recessed portions 5, the position of the arc extinguishing grid 2 can be adjusted.

[0021] The width of the insert block 9 is equal to the width of the recessed portion 5 , so that when the arc-extinguishing grid 2 is installed, there will be no forward and backward displacement between the arc-extinguishing grid and the side plate 1 , ensuring that the arc-extinguishing grid 2 is firmly installed.

[0022] Specifically, when installing the arc extinguishing grid 2, a suitable position of the arc extinguishing grid 2 is selected according to the movement trajectory of the moving contact, so that the plug block 9 is aligned with the recessed portion 5 and the limiting groove 8 and inserted. During the insertion process of the plug block 9, the clamping block 10 will stretch the support block 3 and the side plate 1 to cause them to deform. The plug block 9 enters the recessed portion 5 and enters the slot 6 after passing through the limiting groove 8 until the plug block 9 is blocked by the side plate 1. At this time, the clamping block 10 is just aligned with the clamping groove 7, and the clamping block 10 is clamped into the clamping groove 7, thereby fixing the arc extinguishing grid 2.

[0023] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0025] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable frame arc extinguishing chamber, comprising two side plates (1), and a plurality of arc extinguishing grids (2) installed between the two side plates (1), characterized in that: A plurality of support blocks (3) distributed at equal intervals are integrally formed on one side of the two adjacent side plates (1), and a limiting groove (8) is formed between adjacent support blocks (3). A slot (6) is provided on the inner side wall of the side plate (1), and the slot (6) is connected to the adjacent limiting groove (8). A plurality of recessed portions (5) are provided on the side plate (1) and the support block (3), and the recessed portions (5) are connected to the slot (6) and the limiting groove (8). A clamping groove (7) is provided on the inner wall of the slot (6). Two plug-in blocks (9) are integrally formed on both sides of the arc extinguishing grid (2), and a clamping block (10) matching the clamping groove (7) is symmetrically provided on the outer side of the plug-in block (9).

2. The adjustable frame arc extinguishing chamber according to claim 1, characterized in that: A slope (11) is provided on one side of the clamping block (10).

3. The adjustable frame arc extinguishing chamber according to claim 2, characterized in that: A chamfer (4) is provided on the side of the support block (3) away from the side plate (1).

4. The adjustable frame arc extinguishing chamber according to claim 1, characterized in that: The thickness of the insert block (9) is greater than the thickness of the arc extinguishing grid (2).

5. The adjustable frame arc extinguishing chamber according to claim 1, characterized in that: The width of the insert block (9) is equal to the width of the recessed portion (5).

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