Load switch arc extinguishing mechanism

Abstract

The utility model discloses a load switch arc extinguishing mechanism, including mounting bracket, arrange distribution setting in the mounting bracket a plurality of slot and the arc extinguishing grid piece of inserting into each slot, the width of slot is greater than the thickness of arc extinguishing grid piece, the movable setting of mounting bracket has the compression piece, the compression piece is formed with the compression claw that extends into each slot and is located the arc extinguishing grid piece one side in the slot, the compression claw has the compression state and the non - compression state for compressing the arc extinguishing grid piece with the compression piece movement having cooperation slot, the mounting bracket is equipped with the locking structure of drive compression piece and switches between the non - compression state of compression state, the utility model has the following advantages and effect: the utility model production difficulty is low and has better reliability and durability.

Description

Technical Field

[0001] This utility model relates to a load switch, and more particularly to an arc-extinguishing mechanism for a load switch. Background Technology

[0002] A load switch is a type of switching device that falls between a circuit breaker and a disconnector. It is generally equipped with a simple arc-extinguishing device, but its structure is relatively simple. Its core function is to close, carry, and interrupt load current under normal operating conditions, while also having the ability to carry abnormal current (such as short-circuit current) within a specified time.

[0003] The existing arc-extinguishing mechanism of a load switch includes a mounting frame, several slots arranged in the mounting frame, and several arc-extinguishing grid plates inserted and fixed into the slots. The arc-extinguishing grid plates are fixed to the slots by a tight fit. However, this tight fit not only requires precise control of the assembly tolerance between the slots and the arc-extinguishing grid plates, but also requires full consideration of the tolerance caused by material shrinkage during the production of the mounting frame. This undoubtedly increases the production difficulty of the mounting frame and also increases the probability of defective products. In addition, if the tightness is too high, the assembly process will become more difficult; if it is too loose, the assembly parts are prone to loosening during use due to the thermal expansion and contraction of the material, thus significantly reducing the reliability and durability of the arc-extinguishing mechanism. In view of the above problems, this improvement solution has emerged. Utility Model Content

[0004] The purpose of this utility model is to provide an arc-extinguishing mechanism for a load switch.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a load switch arc extinguishing mechanism, including a mounting frame, a plurality of slots arranged in the mounting frame, and an arc extinguishing grid plate inserted into each slot. The width of the slot is greater than the thickness of the arc extinguishing grid plate. A clamping member is movably disposed on the mounting frame. A clamping claw is formed on the clamping member, extending into each slot and located on one side of the arc extinguishing grid plate inside the slot. The clamping claw moves with the clamping member and has a clamping state and a non-clamping state that cooperate with the slot to clamp the arc extinguishing grid plate. The mounting frame is provided with a locking structure that drives the clamping member to switch between the clamping state and the non-clamping state.

[0006] By adopting the above technical solution, the width of the slot is set to be greater than the thickness of the arc-extinguishing grid, allowing the arc-extinguishing grid to be easily inserted into the slot. Once all the arc-extinguishing grids are inserted into the slot, the locking structure drives the clamping component and clamping claw to move synchronously, switching the clamping claw from a non-clamping state to a clamping state. The clamping claw then drives the arc-extinguishing grids to press against the side wall of the slot, thus clamping and fixing the arc-extinguishing grids within the slot. This structural design greatly reduces the manufacturing difficulty of the product, decreases the probability of defective products, and enhances its reliability and durability.

[0007] The mounting bracket is further configured such that a main slide groove is provided on the mounting bracket for the clamping member to move in a direction perpendicular to the direction in which the arc-extinguishing grid plate is inserted into the slot, and a connecting slide groove for the clamping claw to slide is connected between the main slide groove and the side wall of each slot.

[0008] By adopting the above technical solution, the main slide groove, in conjunction with the connecting slide groove structure, enables the movement of the clamping component and the clamping claw on the mounting frame, thereby switching between the clamping state and the non-clamping state.

[0009] The locking structure is further configured as follows: the locking structure is a locking screw hole provided on the mounting bracket and connected to one end of the main slide groove, and a locking bolt threadedly connected to the locking screw hole. A separable limiting structure is formed between the clamping member and the main slide groove. When the clamping claw clamps the arc extinguishing grid plate located in the slot, the limiting structure restricts the clamping member from leaving the main slide groove.

[0010] By adopting the above technical solution, the locking bolt is threadedly connected to the locking screw hole, thereby driving the locking bolt to move towards the clamping part, thus realizing the locking operation of the clamping part. The setting of the limiting structure improves the installation stability of the clamping part installed on the mounting bracket, thereby ensuring the reliability of the setting structure, and by setting the limiting structure to be detachable, it ensures the convenience of disassembly and assembly.

[0011] The limiting structure is further configured as follows: the limiting protrusion is provided at one end of the locking bolt opposite to the clamping member, and the limiting groove is provided on the side of the main slide corresponding to the limiting protrusion and for the limiting protrusion to be embedded.

[0012] By adopting the above technical solution, during the process of the clamping claw moving towards the arc-extinguishing grid plate to press against the arc-extinguishing grid plate, the limiting protrusion is embedded into the limiting groove, thereby limiting the clamping component and ensuring the stability of the assembly structure.

[0013] The clamping member is further configured such that a limiting groove for the insertion of the locking bolt is provided at the position where the clamping member abuts against the locking bolt.

[0014] By adopting the above technical solution, the limiting groove and the limiting structure are used to limit the clamping parts at both ends, thereby further improving the installation stability of the clamping parts.

[0015] The further configuration is as follows: the clamping member and the clamping claw are integrally formed and are made of elastic material, and the connection between the clamping member and each clamping claw is provided with an elastic notch.

[0016] By adopting the above technical solution, the setting of the elastic notch is conducive to the clamping claw to perform better elastic deformation, thereby increasing the elastic clamping force applied by the clamping claw to the arc extinguishing grid plate, so as to better compensate for the thermal expansion and contraction deformation formed during use and achieve better clamping purpose.

[0017] The elastic notch is further configured such that it is located on the side of the clamping claw facing the arc-extinguishing grid plate.

[0018] By adopting the above technical solution, it is more conducive to the elastic deformation of the clamping claw.

[0019] In summary, this utility model has the following advantages: it is easy to manufacture and has better reliability and durability. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of an embodiment; Figure 2 This is another structural schematic diagram of an embodiment; Figure 3 This is a partial exploded view of an embodiment; Figure 4 This is a partial structural diagram of an embodiment.

[0021] In the diagram: 1. Mounting bracket; 2. Slot; 3. Arc extinguishing grid plate; 4. Clamping component; 5. Clamping claw; 6. Main slide groove; 7. Connecting slide groove; 81. Locking screw hole; 82. Locking bolt; 91. Limiting protrusion; 92. Limiting groove; 10. Limiting slot; 11. Elastic notch. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings.

[0023] refer to Figures 1 to 4 An arc-extinguishing mechanism for a load switch includes a mounting frame 1, a plurality of slots 2 arranged in the mounting frame 1, and an arc-extinguishing grid plate 3 inserted into each slot 2. The width of the slot 2 is greater than the thickness of the arc-extinguishing grid plate 3, and the slots 2 are symmetrically arranged along the length of the mounting frame 1. A clamping member 4 is movably mounted on the mounting frame 1, and a clamping claw 5 is formed on the clamping member 4 extending into each slot 2 and located on one side of the arc-extinguishing grid plate 3 within the slot 2. The clamping claw 5 moves with the clamping member 4 and has a clamped state and a non-clamped state that cooperate with the slot 2 to clamp the arc-extinguishing grid plate 3. The mounting frame 1 is provided with a locking structure that drives the clamping member 4 to switch between the clamped state and the non-clamped state.

[0024] The mounting bracket 1 has a main slide groove 6 for the clamping member 4 to move in a direction perpendicular to the arc extinguishing grid plate 3 into the slot 2. The main slide groove 6 is connected to the side wall of each slot 2 by a connecting slide groove 7 for the clamping claw 5 to slide. The connecting slide groove 7 is provided on the mounting bracket 1.

[0025] The locking structure consists of a locking screw hole 81 located on the mounting bracket 1 and connected to one end of the main slide groove 6, and a locking bolt 82 threadedly connected to the locking screw hole 81. A separable limiting structure is formed between the clamping member 4 and the main slide groove 6. When the clamping claw 5 clamps the arc-extinguishing grid plate 3 located in the slot 2, the limiting structure prevents the clamping member 4 from disengaging from the main slide groove 6.

[0026] The limiting structure includes a limiting protrusion 91 integrally disposed at one end of the locking bolt 82 of the clamping member 4 and a limiting groove 92 opened on one side of the main slide groove 6 corresponding to the limiting protrusion 91 and for the limiting protrusion 91 to be inserted.

[0027] The clamping member 4 has a limiting groove 10 for inserting the locking bolt 82 at the position where it abuts against the locking bolt 82. The clamping member 4, the limiting protrusion 91, and the clamping claw 5 are integrally formed and made of elastic material, preferably engineering plastic. An elastic notch 11 is provided at the connection between the clamping member 4 and each clamping claw 5. The elastic notch 11 is located on the side of the clamping claw 5 facing the arc-extinguishing grid plate 3. The locking bolt 82 is made of engineering plastic.

[0028] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A load switch arc extinguishing mechanism, comprising a mounting frame (1), a plurality of slots (2) arranged in a plurality of slots (2) on the mounting frame (1), and an arc extinguishing grid plate (3) inserted into each slot (2), characterized in that: The width of the slot (2) is greater than the thickness of the arc-extinguishing grid plate (3). A clamping member (4) is movably disposed on the mounting bracket (1). A clamping claw (5) is formed on the clamping member (4) extending into each slot (2) and located on one side of the arc-extinguishing grid plate (3) inside the slot (2). The clamping claw (5) moves with the clamping member (4) and has a clamping state and a non-clamping state that cooperate with the slot (2) to clamp the arc-extinguishing grid plate (3). The mounting bracket (1) is provided with a locking structure that drives the clamping member (4) to switch between the clamping state and the non-clamping state.

2. The load switch arc extinguishing mechanism according to claim 1, characterized in that: The mounting bracket (1) is provided with a main slide groove (6) for the clamping member (4) to move in a direction perpendicular to the arc extinguishing grid plate (3) into the slot (2). The main slide groove (6) and the side wall of each slot (2) are connected by a connecting slide groove (7) for the clamping claw (5) to slide.

3. The load switch arc extinguishing mechanism according to claim 2, characterized in that: The locking structure consists of a locking screw hole (81) located on the mounting bracket (1) and connected to one end of the main slide groove (6) and a locking bolt (82) threadedly connected to the locking screw hole (81). A separable limiting structure is formed between the clamping member (4) and the main slide groove (6). When the clamping claw (5) clamps the arc extinguishing grid plate (3) located in the slot (2), the limiting structure restricts the clamping member (4) from disengaging from the main slide groove (6).

4. The load switch arc extinguishing mechanism according to claim 3, characterized in that: The limiting structure includes a limiting protrusion (91) disposed at one end of the locking bolt (82) opposite to the clamping member (4) and a limiting groove (92) disposed on the side of the main slide groove (6) corresponding to the limiting protrusion (91) and for the limiting protrusion (91) to be inserted.

5. The load switch arc extinguishing mechanism according to claim 1, characterized in that: The clamping member (4) has a limiting groove (10) for inserting the locking bolt (82) at the position where it abuts against the locking bolt (82).

6. The load switch arc extinguishing mechanism according to claim 2, characterized in that: The clamping member (4) and the clamping claw (5) are integrally formed and are made of elastic material. Each clamping member (4) and each clamping claw (5) is provided with an elastic notch (11).

7. The load switch arc extinguishing mechanism according to claim 6, characterized in that: The elastic notch (11) is located on the side of the clamping claw (5) facing the arc-extinguishing grid plate (3).

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