Isolation switch contact knife

Abstract

The utility model belongs to the technical field of isolating switches, and discloses an isolating switch contact knife, which comprises a contact knife body for an isolating switch, grooves are formed on two side walls of the contact knife body, a plurality of cylindrical bumps positioned in the grooves are integrally formed on the side walls of the contact knife body side by side, and the bumps are arranged on the side walls of the contact knife body. A plurality of through open holes are formed between the other two side walls of the contact knife body side by side, a connecting piece is integrally formed at the top of the contact knife body, the top of the connecting piece is sleeved with an insulating handle, and the diameter values of the connecting holes are sequentially increased. The connecting part and the contact knife body, the protruding block and the contact knife body, and the connecting piece and the contact knife body are all of a casting integrally-formed structure. According to the scheme, the defect that heat dissipation of the contact knife body is relatively slow due to the fact that the structure of the contact knife body is not optimized is overcome.

Description

Technical Field

[0001] This utility model belongs to the field of disconnecting switch technology, specifically a disconnecting switch contact blade. Background Technology

[0002] The contact blade is an important structure in a disconnecting switch. As the moving part of the disconnecting switch, it works with the stationary contact to connect or disconnect the circuit through mechanical movement. In order to ensure the smooth operation of the disconnecting switch, the contact blade body needs to reduce heat generation.

[0003] Meanwhile, a disconnecting switch contact knife and a disconnecting switch with application number CN202420408039.6 are disclosed. The contact knife body includes a contact knife body, which sequentially comprises a transition portion, a connecting portion, and a plug-in portion. The transition portion and the plug-in portion are arranged parallel to each other. The two ends of the connecting portion are obliquely connected to the transition portion and the plug-in portion, respectively. The transition portion is used to connect to an external busbar and has at least two first positioning holes. The plug-in portion is used to connect to the disconnecting switch body and has at least two second positioning holes. The end of the plug-in portion away from the connecting portion gradually narrows to form an oblique blade portion. In practical applications, this utility model's disconnecting switch contact knife utilizes the oblique blade portion to connect to the disconnecting switch body and the transition portion to connect to an external busbar, facilitating installation, reducing circuit connection costs, avoiding repeated overlaps, and significantly reducing temperature rise at electrical connections.

[0004] However, the following problems were found in the implementation of the relevant technology: Although the existing structure can reduce the heat generation at the electrical connection by avoiding repeated overlaps, the contact blade itself has not been structurally optimized, resulting in relatively slow heat dissipation of the contact blade itself. Utility Model Content

[0005] To address the problems mentioned in the background art, this utility model provides a disconnecting switch contact blade with optimized structure. The thickness of the contact blade body is reduced by grooves to increase the heat dissipation rate. In addition, multiple protrusions in the grooves and through-holes in the sidewalls increase the contact area with air, ensuring that the contact blade body dissipates heat relatively faster.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a disconnecting switch contact knife, including a contact knife body for disconnecting switches, wherein grooves are formed on both side walls of the contact knife body, and multiple cylindrical protrusions located in the grooves are integrally formed side by side on the side walls of the contact knife body, and multiple through holes are provided side by side between the other two side walls of the contact knife body, and a connector is integrally formed on the top of the contact knife body, and an insulating handle is sleeved on the top of the connector.

[0007] Preferably, the diameter of the connecting holes increases sequentially.

[0008] Preferably, the connection part and the contact blade body, the protrusion and the contact blade body, and the connector and the contact blade body are all integrally cast structures.

[0009] Preferably, the sidewalls of the connector and the insulating handle are provided with corresponding fixing holes, and a hand screw is connected between the corresponding fixing holes.

[0010] Preferably, the side wall of the hand-tightening screw is fitted with a washer, and the washer is supported between the head of the hand-tightening screw and the corresponding side of the insulated handle.

[0011] Preferably, the top edges of the insulating handle are all obtuse angles.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model reduces its thickness by creating grooves on both side walls, thereby increasing the speed at which heat dissipates. At the same time, multiple protrusions are added in the grooves to increase the contact area with air, thereby improving passive heat dissipation. In addition, multiple through-holes further increase the contact area with air, making the heat dissipation effect of the contact blade body stronger and increasing the stability of the isolating switch.

[0014] 2. This utility model fixes the insulating handle to the top of the contact knife body by means of a sleeve and reinforces it with a hand-tightening screw. When the insulating handle ages and needs to be replaced, you only need to unscrew the hand-tightening screw and lift the insulating handle upward to remove it, making it easy to replace the insulating handle. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the blade body of this utility model;

[0017] Figure 3 This is an exploded view of the structure of the insulating handle of this utility model.

[0018] In the diagram: 1. Contact blade body; 2. Connecting part; 3. Connecting hole; 4. Opening; 5. Groove; 6. Protrusion; 7. Connector; 8. Insulating handle; 9. Fixing hole; 10. Tightening screw; 11. Washer. Detailed Implementation

[0019] 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.

[0020] like Figures 1 to 3 As shown, this utility model provides a disconnecting switch contact knife, including a contact knife body 1 for disconnecting switches. Grooves 5 are formed on both side walls of the contact knife body 1. These grooves 5 significantly reduce the thickness of the contact knife body 1, thus improving its passive heat dissipation. Multiple cylindrical protrusions 6 are integrally formed side-by-side on the side walls of the contact knife body 1, located within the grooves 5. These protrusions 6 significantly increase the contact area between the contact knife body 1 and the air, accelerating the dissipation of heat from its surface. Multiple through-holes 4 are formed side-by-side between the other two side walls of the contact knife body 1. These through-holes 4 further increase the contact area between the contact knife body 1 and the air from another direction, further enhancing its passive heat dissipation. A connector 7 is integrally formed on the top of the contact knife body 1, and an insulating handle 8 is sleeved on the top of the connector 7. The insulating handle 8 is used to prevent direct contact between a person's fingers and the contact knife body 1, ensuring safe use. The insulating handle 8 is installed by sleeve connection.

[0021] Specifically, the bottom of the blade body 1 is integrally formed with a connecting part 2, and the side wall of the connecting part 2 is provided with multiple connecting holes 3 arranged side by side.

[0022] Furthermore, the diameter of the connection hole 3 increases sequentially, and multiple connection holes 3 of different diameters can adapt to the connection of different disconnecting switches, making the contact knife body 1 more versatile.

[0023] Furthermore, the connection between the connecting part 2 and the contact body 1, the connection between the protrusion 6 and the contact body 1, and the connection between the connector 7 and the contact body 1 are all integrally cast structures. The integrally cast structure has excellent structural strength, is not easily damaged, and is more durable.

[0024] It is worth noting that the side walls of the connector 7 and the insulating handle 8 are provided with corresponding fixing holes 9, and a hand screw 10 is connected between the corresponding fixing holes 9. The connector 7 and the insulating handle 8 are fixed by the hand screw 10, and the fixing can be canceled by simply turning the hand screw 10 in the opposite direction.

[0025] It is worth noting that the side wall of the hand screw 10 is fitted with a washer 11, and the washer 11 is supported between the head of the hand screw 10 and the corresponding side of the insulating handle 8. This can prevent the hand screw 10 from being tightened too much, which would make it inconvenient to replace the insulating handle 8.

[0026] It is worth mentioning that the top edges of the insulated handle 8 are all obtuse angles, which can improve the tactile feel of the fingers and prevent discomfort.

[0027] Working principle: The contact body 1 is installed on the corresponding disconnecting switch through the connection hole 3 of the connecting part 2. When it is necessary to connect or disconnect the circuit, the insulating handle 8 can be pulled by the finger. The disconnecting switch will generate heat during operation and conduct it to the surface of the contact body 1. Due to the structural optimization of the contact body 1, the grooves 5 on both sides can significantly reduce the thickness of the contact body 1 to improve its passive heat dissipation effect. At the same time, multiple protrusions 6 and through openings 4 significantly increase the contact area between the contact body 1 and the air, further accelerating the dissipation of heat from its surface. Therefore, the contact body 1 will not overheat, and the disconnecting switch will operate more stably.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A disconnector switch contact, comprising a contact body (1) for a disconnector switch, characterized in that: The two side walls of the contact blade body (1) are each provided with a groove (5). The side walls of the contact blade body (1) are integrally formed with a plurality of cylindrical protrusions (6) located in the grooves (5). The other two side walls of the contact blade body (1) are provided with a plurality of through holes (4). The top of the contact blade body (1) is integrally formed with a connector (7), and an insulating handle (8) is sleeved on the top of the connector (7).

2. The disconnector contact blade according to claim 1, characterized in that: The bottom of the blade body (1) is integrally formed with a connecting part (2), and the side wall of the connecting part (2) is provided with a plurality of connecting holes (3) arranged in parallel.

3. The disconnector contact blade according to claim 2, characterized in that: The diameter of the connecting hole (3) increases sequentially.

4. The disconnector contact blade according to claim 2, characterized in that: The connection part (2) and the contact body (1), the protrusion (6) and the contact body (1), and the connector (7) and the contact body (1) are all integrally cast structures.

5. The disconnector contact blade according to claim 1, characterized in that: The sidewalls of the connector (7) and the insulating handle (8) are provided with corresponding fixing holes (9), and a hand screw (10) is connected between the corresponding fixing holes (9).

6. The disconnector contact blade according to claim 5, characterized in that: The side wall of the hand-tightening screw (10) is fitted with a washer (11), and the washer (11) is supported between the head of the hand-tightening screw (10) and the corresponding side of the insulated handle (8).

7. The disconnector contact blade according to claim 1, characterized in that: The top edges of the insulating handle (8) are all obtuse angles.

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