Circuit breaker phase partition plate device and circuit breaker

Abstract

The utility model relates to the technical field of low-voltage electric appliances, in particular to a circuit breaker phase partition plate device and a circuit breaker. The circuit breaker phase partition plate device comprises a plurality of partition plates. Bulges are arranged at the first ends of the partition plates, and second slots are formed in the second ends of the partition plates; the protrusions are used for being connected with the first inserting grooves of the circuit breaker shell in an inserted mode, or the protrusions of one partition plate are connected with the second inserting grooves of another partition plate in an inserted mode, and the multiple partition plates are sequentially arranged in the extension direction of the busbar of the circuit breaker. An operator can flexibly determine the number of the partition plates according to the actual size of the busbar in the circuit breaker, so that busbars with different sizes can be adapted by increasing or decreasing the number of the partition plates, and the cost is saved. And the process of cutting the partition plate in the prior art is not needed, so that the extra processing cost and the labor hour loss are reduced. Meanwhile, the problem of burrs or cracks on the edge of the partition plate caused by cutting is avoided, and the insulating strength of the partition plate is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to low voltage apparatus technical field especially relates to a circuit breaker phase spacing plate device and circuit breaker. BACKGROUND

[0002] The circuit breaker phase spacing plate is a key insulation component of low voltage apparatus, and its role is to isolate adjacent conductors to prevent arc short circuit. The traditional phase spacing plate generally adopts an integrated structure and is fixedly connected with the circuit breaker shell through a top buckle.

[0003] However, the existing design has significant limitations: in order to adapt to different current specifications, the current circuit breaker product is configured with busbars of different lengths in the same shell, which is usually divided into long, medium and short specifications. However, the phase spacing plate only provides a single size model matched with the longest busbar. When the user selects a short specification busbar, the phase spacing plate with redundant length is still forced to be installed. Due to the strict limitation of the internal space layout of the power distribution cabinet (for example, the compact distance between adjacent circuit breakers or the presence of a transverse support structure), the excessively long phase spacing plate is prone to mechanical interference with the cabinet components or adjacent equipment, resulting in installation obstruction. To solve this contradiction, the existing technical solution can only cut off the redundant part of the phase spacing plate by manual cutting. This operation not only increases additional processing cost and time loss, but also causes burrs or cracks on the edge of the phase spacing plate due to the difficulty in standardizing the cutting precision, thereby reducing the insulation strength of the phase spacing plate.

[0004] Therefore, there is an urgent need to design a circuit breaker phase spacing plate device and circuit breaker to solve the above technical problems. SUMMARY

[0005] The first purpose of the utility model is to provide a circuit breaker phase spacing plate device that can be flexibly adapted to busbars of different sizes, saving cost and improving the insulation strength of the spacing plate.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a circuit breaker phase spacing plate device, which comprises a plurality of spacing plates, a protrusion is arranged at the first end of the spacing plate, and a second slot is arranged at the second end of the spacing plate; the protrusion is used for being inserted into the first slot of the circuit breaker shell, or the protrusion of one spacing plate is inserted into the second slot of another spacing plate, and the plurality of spacing plates are arranged in sequence along the direction in which the busbar of the circuit breaker extends.

[0008] As an optional technical solution of the circuit breaker phase spacing plate device, the spacing plate comprises a panel and two baffles, the first end of the panel is provided with the protrusion, both the baffles are connected with the second end of the panel, both the baffles are oppositely and spacedly arranged and form the second slot, and the first end of the panel is accommodated between both the baffles.

[0009] As an optional technical solution for a phase partition device of a circuit breaker, one of the baffles is provided with a first groove A and a second groove A, and the other baffle is provided with a first groove B and a second groove B;

[0010] The first groove A and the first groove B are interconnected and form a first groove; the second groove A and the second groove B are interconnected and form a second groove; the first groove and the second groove are interconnected and form a second slot.

[0011] The first groove extends along a first direction, and the second groove extends along a second direction, with the first direction and the second direction being perpendicular to each other; the protrusion can pass through the first groove and be inserted into the second groove.

[0012] As an optional technical solution for a circuit breaker phase partition device, a limiting part is provided at the first end of the panel, the limiting part is provided on the side of the panel, and the limiting part is spaced apart from the protrusion in a first direction.

[0013] As an optional technical solution for a circuit breaker phase partition device, the limiting part is provided on both sides of the panel;

[0014] The limiting part is strip-shaped and extends along the second direction; or, the limiting part is block-shaped, and a plurality of the limiting parts are equally spaced along the second direction.

[0015] As an optional technical solution for a circuit breaker phase partition device, a support plate is provided between the two baffles, one end of the support plate is connected to one of the baffles, and the other end of the support plate is connected to the other baffle; when two adjacent partitions are inserted, the length of the support plate along the first direction is not greater than the distance between the first end of one partition and the second end of the other partition.

[0016] As an optional technical solution for a circuit breaker phase partition device, the support plate is configured as a plurality of plates, and the plurality of support plates are equally spaced along the second direction.

[0017] As an optional technical solution for a circuit breaker phase partition device, the panel is provided with multiple reinforcing ribs at equal intervals along the second direction.

[0018] As an optional technical solution for a circuit breaker phase partition device, the partition is made of engineering plastic.

[0019] The second objective of this invention is to provide a circuit breaker that is low in cost, can be flexibly adapted to busbars of different sizes, and improves the insulation strength of the baffle.

[0020] To achieve this objective, the present invention adopts the following technical solution:

[0021] This utility model provides a circuit breaker, which includes a housing and a circuit breaker phase partition device as described in any of the above optional technical solutions. The housing is provided with a first slot, which includes a third slot and a fourth slot that are interconnected. The third slot extends along a first direction, and the fourth slot extends along a second direction. The first direction and the second direction are perpendicular to each other. The protrusion can pass through the third slot and be inserted into the fourth slot.

[0022] The beneficial effects of this utility model include at least the following:

[0023] This utility model provides a circuit breaker phase partition device, which includes multiple partitions. A protrusion is provided at the first end of the partition, and a second slot is provided at the second end of the partition; the protrusion is used to insert into the first slot of the circuit breaker housing, or the protrusion of one partition is inserted into the second slot of another partition, and the multiple partitions are arranged sequentially along the direction of extension of the busbar of the circuit breaker.

[0024] The above describes a method where protrusions and second slots are provided on the partitions. Each subsequent partition inserts into the second slot of the preceding partition via its protrusion, thus completing the splicing of two adjacent partitions. This process can be repeated to splice multiple partitions. The protrusion on the partition at the first end of this splicing structure is used to insert into the first slot on the circuit breaker housing, thereby completing the assembly of the phase partition device with the housing. Operators can flexibly determine the number of partitions based on the actual dimensions of the busbars in the circuit breaker. This allows the use of only a single specification of partitions, and different sizes of busbars can be accommodated by increasing or decreasing the number of partitions, saving costs. This eliminates the need for the partition cutting process found in existing technologies, reducing additional processing costs and labor time, improving work efficiency, and saving costs. It also avoids the problem of burrs or cracks on the partition edges caused by cutting, improving the insulation strength of the partitions.

[0025] This utility model also provides a circuit breaker with low cost, which can be flexibly adapted to busbars of different sizes and improve the insulation strength of the partition. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0027] Figure 1 This is an exploded view of the circuit breaker provided in this embodiment of the utility model;

[0028] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0029] Figure 3 This is a schematic diagram of the structure of the partition provided in this embodiment of the utility model;

[0030] Figure 4 This is a cross-sectional view of the partition provided in an embodiment of the present utility model;

[0031] Figure 5 This is a schematic diagram of the structure after the two partitions are spliced ​​together, as provided in this embodiment of the utility model;

[0032] Figure 6 This is a cross-sectional view of the two partitions spliced ​​together according to an embodiment of the present invention.

[0033] Figure Labels

[0034] 100. Housing; 110. First slot;

[0035] 10. Partition; 11. Protrusion; 12. Second slot; 121. First groove; 122. Second groove; 13. Panel; 131. Reinforcing rib; 14. Baffle; 15. First end; 16. Limiting part; 17. Support plate. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0038] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0039] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0040] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0042] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0043] This embodiment provides a circuit breaker phase partition device that can be flexibly adapted to busbars of different sizes, saving costs and improving the insulation strength of the partition.

[0044] like Figures 1-6As shown, the circuit breaker phase partition assembly is detachably inserted into the first slot 110 of the circuit breaker housing 100. The circuit breaker phase partition assembly mainly includes multiple partitions 10. The first end 15 of the partition 10 is provided with a protrusion 11, and the second end of the partition 10 is provided with a second slot 12. The protrusion 11 is used to insert into the first slot 110 of the circuit breaker housing 100, or the protrusion 11 of one partition 10 is inserted into the second slot 12 of another partition 10, and the multiple partitions 10 are arranged sequentially along the direction of extension of the circuit breaker busbar.

[0045] Based on the above design, by providing a protrusion 11 and a second slot 12 on the partition 10, the subsequent partition 10 is inserted into the second slot 12 of the preceding partition 10 through the protrusion 11, thus completing the splicing of two adjacent partitions 10. This process can be repeated to splice multiple partitions 10. The protrusion 11 on the partition 10 at the first end of this splicing structure is used to insert into the first slot 110 on the circuit breaker housing 100, thus completing the assembly of the circuit breaker's phase partition assembly with the housing 100. Operators can flexibly determine the number of partitions 10 according to the actual dimensions of the busbars in the circuit breaker. This way, only a single specification of partition 10 is needed, and different sizes of busbars can be accommodated by increasing or decreasing the number of partitions 10, saving costs. The cutting process of the partitions 10, as in existing technologies, is eliminated, reducing additional processing costs and labor time, improving work efficiency, and saving costs. At the same time, it also avoids the problem of burrs or cracks on the edge of the partition 10 caused by cutting, and improves the insulation strength of the partition 10.

[0046] Optionally, the partition 10 in this embodiment can be configured to be in multiple rows according to actual needs.

[0047] like Figures 3-6 As shown, in this embodiment, the partition 10 includes a panel 13 and two baffles 14. The first end of the panel 13 is provided with a protrusion 11. The two baffles 14 are connected to the second end of the panel 13. The two baffles 14 are opposite to each other and spaced apart to form a second slot 12. The space between the two baffles 14 is used to accommodate the first end of the panel 13.

[0048] Because the spliced ​​partition 10 is prone to exposed gaps at the joints, it increases the risk of arc breakdown. This embodiment addresses this by using two baffles 14 to accommodate the first end of the panel 13, thus physically shielding the exposed gap, extending the arc path, and reducing the risk of arc breakdown. It also reduces or prevents dust or metal debris from entering the gap, improving the insulation reliability of the partition 10.

[0049] like Figures 3-6As shown, one baffle 14 is provided with a first groove A and a second groove B, and the other baffle 14 is provided with a first groove B and a second groove B. The first groove A and the first groove B are interconnected and form a first groove 121, the second groove A and the second groove B are interconnected and form a second groove 122, and the first groove 121 and the second groove 122 are interconnected and form a second slot 12. The first groove 121 extends along a first direction, and the second groove 122 extends along a second direction, the first direction and the second direction being perpendicular to each other; the protrusion 11 can pass through the first groove 121 and be inserted into the second groove 122.

[0050] In this embodiment, the second slot 12 is a composite slot consisting of an orthogonally distributed first slot 121 (first direction guide) and a second slot 122 (second direction lock). This avoids the splicing structure from loosening due to vibration or thermal expansion caused by a slot in only one direction. In this embodiment, the protrusion 11 forms a mechanical interlock through two directional switches, improving the stability of the partition 10 splicing. The first direction is... Figure 3 The X-axis direction in the diagram, the second direction is... Figure 3 The Y-axis direction in the diagram.

[0051] Please continue to refer to this. Figure 3 Along the third direction, the width of the first end 15 of the partition 10 is no greater than the distance between the two baffles 14, so that after two adjacent partitions 10 are spliced, the first end 15 of the partition 10 is accommodated between the two baffles 14. This avoids uneven splicing caused by interference between the first end of the partition 10 and the baffle 14. The third direction is... Figure 3 The Z-axis direction in the equation.

[0052] In this embodiment, a limiting part 16 is provided at the first end of the panel 13. The limiting part 16 is disposed on the side of the panel 13 and is spaced apart from the protrusion 11 in the first direction. The limiting part 16 can prevent the first end of the partition 10 from being over-inserted, which would cause the insertion depth to become uncontrolled. The limiting part 16 can limit the end face of the baffle 14 to form a physical barrier, prevent stress concentration caused by over-insertion, and extend the service life of the phase partition device of the circuit breaker.

[0053] Furthermore, in this embodiment, limiting portions 16 are provided on both sides of the panel 13. That is, each partition 10 is provided with two limiting portions 16, and the two limiting portions 16 and the two baffles 14 are respectively provided one-to-one.

[0054] For example, the limiting portion 16 is strip-shaped and extends along the second direction; or, the limiting portion 16 is block-shaped, and multiple limiting portions 16 are equally spaced along the second direction. This improves the reliability of the limiting portion 16 in limiting the end face of the baffle 14, while avoiding local stress concentration in the partition 10. Of course, the limiting portion 16 can also be configured in other shapes according to actual needs, which will not be elaborated here.

[0055] like Figures 3-4 As shown, a support plate 17 is provided between the two baffles 14. One end of the support plate 17 is connected to one of the baffles 14, and the other end of the support plate 17 is connected to the other baffle 14. In other words, the addition of a transverse support plate 17 between the two baffles 14 forms a truss structure, thereby reducing or avoiding the bending deformation of the partition 10 under short-circuit electrodynamics and improving the strength and stiffness of the partition 10.

[0056] Furthermore, when two adjacent partitions 10 are inserted, the length of the support plate 17 along the first direction is not greater than the distance between the first end 15 of one partition 10 and the second end of the other partition 10. This allows for convenient insertion and connection of two adjacent partitions 10, improving insertion efficiency and avoiding interference from the support plate 17 during the insertion of two adjacent partitions 10.

[0057] For example, multiple support plates 17 can be provided, and the multiple support plates 17 are equally spaced along the second direction to improve the stress distribution of the partition 10 and reduce the risk of fatigue fracture of the partition 10. For example, the number of support plates 17 can be five, eight, ten, etc.

[0058] like Figure 3 and Figure 5 As shown, multiple reinforcing ribs 131 are provided at equal intervals along the second direction on the panel 13 to reduce the thermal expansion and deformation of the panel 13, ensure the strength and flatness of the panel 13, and extend its service life.

[0059] Optionally, the partition 10 in this embodiment is an engineering plastic part. For example, the partition 10 can be made of thermoplastic engineering plastics such as nylon, polycarbonate, and epoxy resin.

[0060] like Figures 1-2As shown, this embodiment also provides a circuit breaker, which includes a housing 100 and the aforementioned circuit breaker partition device. A first slot 110 is provided on the housing 100. The first slot 110 includes a third groove and a fourth groove that are interconnected. The third groove extends along a first direction, and the fourth groove extends along a second direction, with the first and second directions perpendicular to each other. A protrusion 11 can pass through the third groove and be inserted into the fourth groove. In this embodiment, the first slot 110 adopts a composite slot with orthogonally distributed third grooves (guided in the first direction) and fourth grooves (locked in the second direction). The protrusion 11 first inserts into the third groove along the first direction and then slides down along the second direction to embed into the fourth groove, forming a bidirectional mechanical constraint. No assembly tools are required, and operators can install it by hand, improving work efficiency. Simultaneously, it can prevent the splicing structure from loosening due to vibration or thermal expansion caused by a single-direction slot. In this embodiment, the protrusion 11 forms a mechanical interlock through two directional switchings, improving the stability of the connection between the partition 10 and the circuit breaker housing 100.

[0061] Because the circuit breaker has the aforementioned circuit breaker phase partition device, the circuit breaker has a lower cost, can be flexibly adapted to busbars of different sizes, and improves the insulation strength of the partition 10.

[0062] Obviously, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

[0063] Note that in the description of this specification, the references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A circuit breaker phase partition assembly, characterized in that, The circuit breaker includes multiple partitions (10), each partition (10) having a protrusion (11) at its first end and a second slot (12) at its second end. The protrusion (11) is used to be inserted into a first slot (110) of the circuit breaker housing (100), or the protrusion (11) of one partition (10) is inserted into the second slot (12) of another partition (10), and the multiple partitions (10) are arranged sequentially along the direction of the circuit breaker busbar.

2. The circuit breaker phase spacer device according to claim 1, characterized in that, The partition (10) includes a panel (13) and two baffles (14). The first end of the panel (13) is provided with the protrusion (11). The two baffles (14) are connected to the second end of the panel (13). The two baffles (14) are opposite to each other and spaced apart to form the second slot (12). The space between the two baffles (14) is used to accommodate the first end of the panel (13).

3. The circuit breaker phase spacer device according to claim 2, characterized in that, One of the baffles (14) is provided with a first groove A and a second groove A, and the other baffle (14) is provided with a first groove B and a second groove B; The first groove A and the first groove B are interconnected and form the first groove (121), the second groove A and the second groove B are interconnected and form the second groove (122), and the first groove (121) and the second groove (122) are interconnected and form the second slot (12). The first groove (121) extends along a first direction, and the second groove (122) extends along a second direction, the first direction and the second direction being perpendicular to each other; the protrusion (11) can pass through the first groove (121) and be inserted into the second groove (122).

4. The circuit breaker phase spacer device according to claim 2, characterized in that, A limiting part (16) is provided at the first end of the panel (13). The limiting part (16) is provided on the side of the panel (13), and the limiting part (16) is spaced apart from the protrusion (11) in a first direction.

5. The circuit breaker phase spacer device according to claim 4, characterized in that, The limiting part (16) is provided on both sides of the panel (13); The limiting part (16) is strip-shaped and extends along the second direction; or, the limiting part (16) is block-shaped and a plurality of the limiting parts (16) are equally spaced along the second direction.

6. The circuit breaker phase spacer device according to claim 2, characterized in that, A support plate (17) is provided between the two baffles (14). One end of the support plate (17) is connected to one of the baffles (14), and the other end of the support plate (17) is connected to the other baffle (14). When two adjacent partitions (10) are inserted, the length of the support plate (17) along the first direction is not greater than the distance between the first end of one partition (10) and the second end of the other partition (10).

7. The circuit breaker phase spacer device according to claim 6, characterized in that, The support plate (17) is provided in multiple ways, and the multiple support plates (17) are arranged at equal intervals along the second direction.

8. The circuit breaker phase spacer device according to claim 2, characterized in that, The panel (13) is provided with a plurality of reinforcing ribs (131) at equal intervals along the second direction.

9. The circuit breaker phase spacer assembly according to any one of claims 1-8, characterized in that, The partition (10) is an engineering plastic component.

10. A circuit breaker, characterized in that, The circuit breaker includes a housing (100) and a circuit breaker phase spacer device according to any one of claims 1-9. A first slot (110) is provided on the housing (100). The first slot (110) includes a third groove and a fourth groove that are in communication with each other. The third groove extends along a first direction, and the fourth groove extends along a second direction. The first direction and the second direction are perpendicular to each other. The protrusion (11) can pass through the third groove and be inserted into the fourth groove.

Images