A power distribution switch

Abstract

The utility model provides a kind of distribution switch, including body and the terminal and connecting piece extended from body, recess structure for increasing creeping distance is provided between terminal and connecting piece, the distribution switch can effectively increase the creeping distance between terminal and other metal parts without changing the size of shell.

Description

Technical Field

[0001] This utility model relates to the field of power distribution switch technology, and specifically to a power distribution switch. Background Technology

[0002] Distribution switches are used to ensure the safe operation of power distribution systems by controlling the switching on and off of circuits and interrupting fault currents. If the distance between the terminals inside the distribution switch and other metal bodies is too short, it can easily lead to arcing short circuits or insulation breakdown, thereby causing equipment damage. In the existing technology, the casing of distribution switches is mostly smooth. For some distribution switches with relatively high voltage, if the casing shape remains unchanged, the creepage distance is too short, which can lead to the risk of disconnecting switch breakdown and short circuit. Utility Model Content

[0003] Therefore, the technical problem to be solved by this utility model is to overcome the defect that the outer shell of most power distribution switches in the prior art is smooth. For some power distribution switches with relatively large voltage, the creepage distance is too short when the outer shell shape remains unchanged, which may lead to the risk of breakdown and short circuit of the isolating switch. Thus, a power distribution switch that can effectively increase the creepage distance between the wiring terminals and other metal parts without changing the size of the shell is provided.

[0004] Therefore, this utility model provides a power distribution switch, including a body and a wiring terminal and a connecting piece extending from the body, wherein a groove structure for increasing the creepage distance is provided between the wiring terminal and the connecting piece.

[0005] Furthermore: the body is encased in a housing, which includes a bottom shell and a cover disposed opposite to each other, and the bottom shell and / or the cover are provided with recessed grooves for increasing the creepage distance between two adjacent contact terminals.

[0006] Furthermore: the connection between the bottom shell and the cover forms a receiving side of a receiving groove structure. The groove structure includes several transverse grooves disposed between the terminal block and the connecting piece. The transverse grooves are disposed on the receiving side and are evenly arranged in an array between the bottom shell and the cover.

[0007] Furthermore, a vertical groove is provided on the side of the bottom shell and the cover opposite to the contact terminal, and the vertical groove is located on the side of the terminal.

[0008] Furthermore: a first partition is provided on the bottom shell, and a second partition is provided on the shell cover. A first groove is provided on the first partition, and a second groove is provided on the second partition.

[0009] Furthermore: the first partition is integrally formed with the bottom shell, and the second partition is integrally formed with the shell cover.

[0010] The technical solution of this utility model has the following advantages:

[0011] 1. The present invention provides a power distribution switch, which, without changing the size of the main body, has a groove structure between the connecting terminal and the connecting piece. By setting the groove structure, compared with the prior art, the shortest distance between the terminal and the connecting piece can be effectively increased, and the path length of current leakage along the insulation surface can be extended.

[0012] 2. The present invention provides a power distribution switch that, when assembled with at least two disconnecting switches, can effectively increase the creepage distance between the terminals of two adjacent power distribution switches. A recessed groove is provided between the bottom shell and the cover. By providing this recessed groove, the path length of the current leakage along the insulating surface between the two contact terminals can be effectively extended, thereby significantly improving the insulation performance. On a flat surface, the creepage distance is a straight-line distance. After providing the recessed groove, the current or contaminants must bypass the recessed groove, thereby significantly increasing the path length. Attached Figure Description

[0013] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of the power distribution switch;

[0015] Figure 2 A schematic diagram of the overall structure of the power distribution switch from another angle;

[0016] Figure 3 for Figure 2 Enlarged view of section A;

[0017] Figure 4 This is a schematic diagram of the shell structure;

[0018] Figure 5 This is a schematic diagram of the shell cover.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Body; 2. Terminal block; 3. Connecting piece; 4. Groove structure; 41. Horizontal groove; 5. Housing; 51. Bottom shell; 52. Shell cover; 53. First partition; 54. Second partition; 6. Recessed groove; 60. Groove bottom; 61. First groove; 62. Second groove; 7. Accommodating side; 8. Vertical groove. Detailed Implementation

[0021] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0025] Example

[0026] This embodiment provides a power distribution switch, including a body 1, a terminal block 2 extending from the body 1, and a connecting piece 3. A groove structure 4 for increasing the creepage distance is provided between the terminal block 2 and the connecting piece 3.

[0027] The specific improvements mentioned above are as follows: Figures 1-3 As shown, without changing the size of the main body 1, a groove structure 4 is provided between the connecting terminal and the connecting piece 3. By providing the groove structure 4, compared with the prior art, the shortest distance between the terminal 2 and the connecting piece 3 can be effectively increased, and the path length of current leakage along the insulating surface can be extended.

[0028] Based on the above embodiments: the body 1 is wrapped with a housing 5, the housing 5 includes a bottom shell 51 and a cover 52 disposed opposite to each other, and the bottom shell 51 and / or the cover 52 are provided with recessed grooves 6 for increasing the creepage distance between two adjacent contact terminals.

[0029] The specific improvements mentioned above are as follows: Figures 3-5 As shown, when at least two disconnecting switches are assembled, the creepage distance between the terminals 2 of two adjacent distribution switches can be effectively increased. A recessed groove 6 is provided between the bottom shell 51 and the shell cover 52. By providing the recessed groove 6, the path length of the current leakage along the insulation surface between the two contact terminals can be effectively extended, and a high-resistance "drying zone" is formed in the groove to block the continuity of contaminants, thereby significantly improving the insulation performance. On a flat surface, the creepage distance is a straight-line distance. After the recessed groove 6 is provided, the current or contaminants must bypass the recessed groove 6, thereby significantly increasing the path length. Therefore, by providing the recessed groove 6, the increase in creepage distance is approximately equal to the groove depth × 2 (the current needs to enter the bottom 60 of the recessed groove 6 and then turn back).

[0030] Based on the above embodiments: the connection between the bottom shell 51 and the cover 52 forms a receiving side 7 of the receiving groove structure 4. The groove structure 4 includes a plurality of transverse grooves 41 disposed between the terminal block 2 and the connecting piece 3. The transverse grooves 41 are disposed at the receiving side 7 and are evenly arranged in an array between the bottom shell 51 and the cover 52.

[0031] The specific improvements mentioned above are as follows: Figure 1 and Figure 2 As shown, the connection between the bottom shell 51 and the cover 52 forms the receiving side 7 of the receiving groove structure 4. The groove structure 4 includes several transverse grooves 41. The number of transverse grooves 41 can be calculated based on the actual voltage to determine the required creepage distance. Thus, the number of transverse grooves 41 is set according to the distance. In this way, the creepage distance between the terminal block 2 and the connecting piece 3 is effectively increased without changing the size of the entire power distribution switch, preventing the risk of breakdown and short circuit of the disconnecting switch.

[0032] Based on the above embodiments: the bottom shell 51 and the shell cover 52 are further provided with a vertical groove 8 on the side opposite to the contact terminal, and the vertical groove 8 is located on the side of the wiring terminal 2.

[0033] The specific improvements mentioned above are as follows: Figure 3As shown, a vertical groove 8 is also provided on the side of the bottom shell 51 and the shell cover 52 opposite to the contact terminal. If one vertical groove 8 is added between two adjacent creepage distances, the increase in creepage distance is approximately equal to the groove depth of the vertical groove 8 × 2. If two vertical grooves 8 are added between two adjacent creepage distances, the increase in creepage distance is approximately equal to the groove depth of the vertical groove 8 × 4, and so on.

[0034] Based on the above embodiments: a first partition 53 is provided on the bottom shell 51, a second partition 54 is provided on the shell cover 52, a first groove 61 is provided on the first partition 53, and a second groove 62 is provided on the second partition 54.

[0035] Based on the above embodiments: the first partition 53 is integrally formed with the bottom shell 51, and the second partition 54 is integrally formed with the shell cover 52.

[0036] The specific improvements mentioned above are as follows: Figure 4 and Figure 5 As shown, the recessed groove 6 includes a first groove 61 and a second groove 62. By setting the first groove 61 on both sides of the first partition 53 and the second groove 62 on both sides of the second partition 54, the creepage distance between the two contact terminals can be effectively increased.

[0037] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A power distribution switch, characterized in that: It includes a body (1) and a terminal block (2) and a connecting piece (3) extending from the body (1), wherein a groove structure (4) for increasing the creepage distance is provided between the terminal block (2) and the connecting piece (3).

2. A power distribution switch according to claim 1, characterized in that: The main body (1) is wrapped with a housing (5), which includes a bottom shell (51) and a cover (52) disposed opposite to each other. The bottom shell (51) and / or the cover (52) are provided with recessed grooves (6) for increasing the creepage distance between two adjacent terminals (2).

3. A power distribution switch according to claim 2, characterized in that: The connection between the bottom shell (51) and the cover (52) forms a receiving side (7) of the receiving groove structure (4), the groove structure (4) including a plurality of transverse grooves (41) disposed between the terminal (2) and the connecting piece (3).

4. A power distribution switch according to claim 3, characterized in that: The transverse groove (41) is provided on the receiving side (7) and is evenly arranged in an array between the bottom shell (51) and the shell cover (52).

5. A power distribution switch according to claim 2, characterized in that: The bottom shell (51) and the cover (52) are also provided with a vertical groove (8) on the side opposite to the contact terminal.

6. A power distribution switch according to claim 5, characterized in that: The vertical groove (8) is located on the side of the terminal (2).

7. A power distribution switch according to claim 2, characterized in that: The bottom shell (51) is provided with a first partition (53), and the shell cover (52) is provided with a second partition (54).

8. A power distribution switch according to claim 7, characterized in that: The first partition (53) is provided with a first groove (61), and the second partition (54) is provided with a second groove (62).

9. A power distribution switch according to claim 8, characterized in that: The first partition (53) is integrally formed with the bottom shell (51), and the second partition (54) is integrally formed with the shell cover (52).

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