Contactor group

Abstract

The utility model discloses a contactor group, which comprises a first contactor, a second contactor and three hard busbars, wherein the connecting parts of the three hard busbars are sequentially arranged in the height direction of the first contactor and the second contactor, and are respectively a first connecting part, a second connecting part and a third connecting part from bottom to top; the insulating support comprises a first partition plate, a second partition plate and two side plates, and the two ends of the first partition plate and the two ends of the second partition plate are connected through the two side plates respectively; in the height direction of the connecting parts, the first connecting part and the second connecting part are separated by the first partition plate, and the second connecting part and the third connecting part are separated by the second partition plate; in the length direction of the connecting part, the two side plates separate the two sides of the second connecting part from the first connecting part and the second connecting part; the cable has the advantage of being good in insulation performance.

Description

Technical Field

[0001] The present application relates to the electrical field of low-voltage switches, and is a contactor group used for emergency starting. Background Art

[0002] Contactors are widely used in the field of industrial control. In some specific environments, such as star-delta starting circuits, it is often necessary to connect the three-phase terminals of two contactors one by one through soft wires. The soft wires themselves have an insulating layer, so the insulation performance of this connection method can be guaranteed to a certain extent.

[0003] However, the distribution of contactors in this structure, coupled with the use of soft wires for connection, will occupy a large amount of space in the control cabinet, making it impossible to miniaturize the control cabinet. Therefore, there is a method on the market that sets two contactors next to each other and then connects the three-phase terminals of the two contactors one by one through a hard busbar, which can greatly reduce the occupation of external space. However, this structure also brings another problem. Although phase partitions are often set at the three-phase terminals of the contactor to ensure the insulation performance between the three-phase terminals, for the three hard busbars, the distance between the three is still relatively close, and the electrical insulation performance is poor.

[0004] Therefore, how to improve the electrical insulation performance between the three rigid busbars is a direction worthy of research. Summary of the invention

[0005] In view of this, the purpose of the present application is to overcome the deficiencies in the prior art and to provide a contactor assembly.

[0006] The present application provides: a contactor group, which includes a first contactor, a second contactor and three hard busbars; the three hard busbars each include two terminal parts and a connecting part connecting the two terminal parts, the terminal part is used to connect to the terminals of the first contactor and the second contactor, the three terminals on the first side of the first contactor and the second contactor correspond to each other one by one and are respectively connected through the three hard busbars; wherein the connecting parts of the three hard busbars are arranged in sequence in the height direction of the first contactor and the second contactor, and from bottom to top are respectively the first connecting part, the second connecting part and the third connecting part; further comprising an insulating bracket, the insulating bracket includes a first partition, a second partition and two side plates, the two ends of the first partition and the second partition are respectively connected through two side plates; in the height direction of the connecting part, the first partition separates the first connecting part from the second connecting part, and the second partition separates the second connecting part from the third connecting part; in the length direction of the connecting part, the two side plates separate the two sides of the second connecting part from the first connecting part and the second connecting part.

[0007] With this structure, since the first connection part, the second connection part and the third connection part are arranged in sequence in the height direction of the first contactor and the second contactor, through the setting of the insulating bracket, the first partition separates the first connection part from the second connection part, the second partition separates the second connection part from the third connection part, and the two side plates separate the two sides of the second connection part from the first connection part and the second connection part. In this way, the insulation performance between the hard busbars of each phase can be guaranteed, and the stability of the product can be improved.

[0008] In some embodiments of the present application, the first partition plate, the second partition plate, and the two side plates together form a slot whose size matches that of the second connecting portion, and the second connecting portion is located in the slot.

[0009] With this structure and design of the insulating bracket, a plug-in fit is formed between the second connecting portion and the insulating bracket, which facilitates installation of the insulating bracket and improves the stability of the insulating bracket after installation.

[0010] In some embodiments of the present application, hollow holes are provided on the first partition plate and / or the second partition plate.

[0011] By adopting this structure and utilizing the hollow hole design, the cost can be reduced as much as possible while ensuring the normal performance of the product; at the same time, the hollow hole design can also allow the insulating bracket to undergo a certain deformation, which will be beneficial to the installation of the insulating bracket.

[0012] In some embodiments of the present application, the three terminals of the first contactor are separated by two phase partitions or / and the three terminals of the second contactor are separated by two phase partitions; the insulating bracket also includes a first insulating portion extending between the two phase partitions and alternately arranged with the two phase partitions.

[0013] With this structure, the design of the phase partition can improve the insulation performance between the three-phase terminals, and the design of the first insulating part can further improve the insulation performance of the hard busbar at the connection with the terminal.

[0014] In some embodiments of the present application, a third partition is further provided on the lower surface of the first partition, and the third partition is distributed on both sides of the width direction of the first connecting part. In the width direction of the connecting part, the third partition separates at least a portion of the first connecting part from the second connecting part.

[0015] The design of the third partition once again improves the insulation performance between the hard busbars.

[0016] In some embodiments of the present application, a fourth partition is further provided on the upper surface of the second partition, and the fourth partition is distributed on both sides of the width direction of the third connecting part. In the width direction of the connecting part, the fourth partition separates at least a portion of the third connecting part from the second connecting part.

[0017] The design of the fourth partition once again improves the insulation performance between the hard busbars.

[0018] In some embodiments of the present application, a protective cover is further included, which covers the insulating bracket and the three terminals on the first side of the first contactor and the second contactor; the protective cover is detachably matched with the first contactor, or / and the protective cover is detachably matched with the second contactor, and / or the protective cover is detachably matched with the insulating bracket.

[0019] The design of the shield can protect the first contactor, the three terminals on the first side of the second contactor, and the insulating bracket.

[0020] In some embodiments of the present application, a controller is further included, and the controller is located below the insulating bracket and the connecting part.

[0021] The design of the controller provides a possibility for realizing an intelligent contactor group. At the same time, the controller is set here to fully utilize the overall space of the contactor group, making the entire product more compact.

[0022] In some embodiments of the present application, the three terminals on the first side of the first contactor are exposed on the outside of the first contactor, and further include a nut seat, which is located below the three terminals on the first side of the first contactor, and the nut seat is provided with nuts corresponding to the three terminals on the first side of the first contactor.

[0023] The design of the nut seat will facilitate the placement of the nut and the wiring of the three terminals on the first side of the first contactor.

[0024] In some embodiments of the present application, the three terminals on the first side of the second contactor are exposed on the outside of the second contactor, and also include a nut seat, which is located below the three terminals on the first side of the second contactor, and the nut seat is provided with nuts corresponding to the three terminals on the first side of the second contactor.

[0025] The design of the nut seat will facilitate the placement of the nut and the wiring of the three terminals on the first side of the second contactor.

[0026] In some embodiments of the present application, two phase partitions are further included between the three terminals of the first contactor, a partition groove is provided on the nut seat, the lower end of the phase partition is inserted into the partition groove, and the phase partitions and the nut seat are staggered.

[0027] The interphase insulation performance can be further improved by staggered arrangement of phase partitions and nut seats.

[0028] In some embodiments of the present application, two phase partitions are further included between the three terminals of the second contactor, a partition groove is provided on the nut seat, the lower end of the phase partition is inserted into the partition groove, and the phase partitions and the nut seat are staggered.

[0029] The interphase insulation performance can be further improved by staggered arrangement of phase partitions and nut seats.

[0030] In some embodiments of the present application, a protective cover is further included, which is located above the insulating bracket. An insert nut is provided in the insulating bracket, and the protective cover and the insert nut are fastened by bolts.

[0031] The design of the insert nut will facilitate the assembly between the shield and the insulating bracket.

[0032] In some embodiments of the present application, a base plate and a controller are further included. The first contactor, the second contactor and the controller are all fixed on the base plate, and the controller is located on a first side of the first contactor and the second contactor.

[0033] The design of the base plate will be conducive to the fixation of the first contactor, the second contactor and the controller, and will help the product to be more integrated, compact and miniaturized. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 A three-dimensional diagram of a contactor assembly according to Embodiment 1 of the present application is shown;

[0036] Figure 2 A schematic diagram of the contactor group after removing the protective cover and the controller of Example 1 of the present application is shown;

[0037] Figure 3 An axial view and a partial enlarged view of the contactor group after removing the protective cover and the controller of Example 1 of the present application are shown;

[0038] Figure 4 A position relationship diagram of two contactors in a contactor group of Example 1 of the present application is shown;

[0039] Figure 5 A schematic diagram showing two contactors in a contactor group of Example 1 of the present application connected via a hard busbar is shown;

[0040] Figure 6A schematic diagram of the structure of an insulating bracket in a contactor group according to Embodiment 1 of the present application is shown;

[0041] Figure 7 A schematic structural diagram of a hard busbar in a contactor group of Example 1 of the present application is shown. DETAILED DESCRIPTION

[0042] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0043] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" 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 application and simplifying the description, and do not indicate or imply that the referred device or element 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 application.

[0044] In addition, the terms "primary" and "secondary" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "primary" and "secondary" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0045] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral 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. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] In the present application, unless otherwise clearly specified and limited, the main feature being "above" or "below" the second feature may mean that the main feature is in direct contact with the second feature, or that the main feature is in indirect contact with the second feature through an intermediate medium. Moreover, the main feature being "above", "above" and "above" the second feature may mean that the main feature is directly above or obliquely above the second feature, or simply means that the main feature is higher in level than the second feature. The main feature being "below", "below" and "below" the second feature may mean that the main feature is directly below or obliquely below the second feature, or simply means that the main feature is higher in level and has a lower electrical connection with the three-phase power supply than the second feature. Example

[0047] like Figure 1-Figure 7 As shown, an embodiment of the present application provides a contactor group.

[0048] The contactor assembly includes a first contactor 100 , a second contactor 200 and a base plate 300 .

[0049] In this embodiment, the first contactor 100 and the second contactor 200 are contactors with the same current specifications, which include an electromagnetic system, a contact system, a terminal 1001 and other components. Since the contactor is a conventional technology for those skilled in the art, the specific structure of the contactor will not be introduced here.

[0050] The first contactor 100 and the second contactor 200 are both fixed on the base plate 300 , and are fixed on the base plate 300 by bolt fastening.

[0051] The first contactor 100 and the second contactor 200 have three terminals 1001 on both sides in the width direction thereof. The two sides in the width direction here refer to the first side S1 and the second side.

[0052] The three terminals 1001 of the first contactor 100 and the second contactor 200 on the first side S1 are connected in a one-to-one correspondence through three hard busbars 400 .

[0053] The three hard busbars 400 here have certain differences in structure, but each hard busbar 400 includes two terminal parts 4002 and a connecting part 4001. The two terminal parts 4002 are connected by a connecting part 4001, and the three connecting parts 4001 are arranged in sequence in the height direction of the first contactor 100 and the second contactor 200, so there is a certain order, that is, from bottom to top, they are the first connecting part 4001a, the second connecting part 4001b, and the third connecting part 4001c. This arrangement from bottom to top is formed by bending the hard busbar 400.

[0054] In this embodiment, the hard busbar 400 having the first connecting portion 4001a is connected as follows: Figure 5 The two leftmost terminals 1001 of the first contactor 100 and the second contactor 200 are connected; the hard busbar 400 having the second connecting portion 4001b is connected as shown in FIG. Figure 5 The first contactor 100 and the second contactor 200 are connected between the two terminals 1001; the hard busbar 400 having the first connecting portion 4001a is connected as shown in FIG. Figure 5 The two rightmost terminals 1001 of the first contactor 100 and the second contactor 200 are connected. Of course, this does not mean that only this connection method can be used. For example, the leftmost terminal 1001 of the first contactor 100 can be connected to the terminal 1001 in the middle of the second contactor 200, or the leftmost terminal 1001 of the first contactor 100 can be connected to the rightmost terminal 1001 of the second contactor 200. As long as it can be ensured that there is a one-to-one correspondence between the terminals 1001 of the two contactors, they can be connected through the hard busbar 400, and after this connection, in the height direction of the first contactor 100 and the second contactor 200, the first connecting part 4001a, the second connecting part 4001b, and the third connecting part 4001c of the hard busbar 400 will be arranged in sequence from bottom to top.

[0055] The insulating support 500 includes a first partition 501, a second partition 502 and two side plates 503. The two ends of the first partition 501 and the second partition 502 are connected by two side plates 503, respectively. The connected insulating support 500 is roughly a frame-shaped structure, and the frame-shaped structure can cover the second connecting part 4001b. That is to say, from the height direction of the connecting part 4001, the first partition 501 will be located between the first connecting part 4001a and the second connecting part 4001b, separating the two; the second partition 502 will be located between the second connecting part 4001b and the third connecting part 4001c, separating the two. From the length direction of the connecting part 4001, the two side plates 503 are respectively located on both sides of the second connecting part 4001b, so that the second connecting part 4001b can be separated from the first connecting part 4001a and the second connecting part 4001b from both sides.

[0056] There are many ways to fix the insulating bracket 500, for example, it can be fixed on the terminal 1001, or fastened to the housing of the first contactor 100 or the second contactor 200. In this embodiment, the method of fixing on the terminal 1001 is adopted. Specifically, the spacing between the first partition 501 and the second partition 502 is consistent with the thickness of the second connecting part 4001b, and the spacing between the side plates 503 on both sides is consistent with the length of the connecting part 4001, so that the first partition 501, the second partition 502 and the two side plates 503 together form a slot 5001 whose size is adapted to the second connecting part 4001b, and the second connecting part 4001b is inserted into the slot 5001.

[0057] Hollow holes 5003 are provided on the first partition plate 501 and the second partition plate 502. Here, there are four hollow holes 5003 on the two upper parts, which are arranged in sequence along the length direction of the connecting portion 4001. The hollow holes 5003 are rectangular in shape and have different shapes. Of course, other sizes, shapes, and numbers can also be used. The design of the hollow holes 5003 can make the insulating bracket 500 have a certain elasticity, which will be conducive to the assembly of the insulating bracket 500 and can also save materials.

[0058] A third partition plate 501a is disposed on the lower surface of the first partition plate 501. Here, there are two third partition plates 501a, which are respectively located on both sides of the width direction of the first connecting portion 4001a. Such a design of the third partition plate 501a can separate a portion of the first connecting portion 4001a from the second connecting portion 4001b in the width direction of the connecting portion 4001. At the same time, the design of the third partition plate 501a also has a certain limiting effect, which will also be conducive to improving the stability of the installation of the insulating bracket 500.

[0059] A fourth partition plate 502a is disposed on the upper surface of the second partition plate 502. Here, there are two fourth partition plates 502a, which are respectively located on both sides of the width direction of the third connecting portion 4001c. Such a design of the fourth partition plate 502a can separate a portion of the third connecting portion 4001c from the second connecting portion 4001b in the width direction of the connecting portion 4001. At the same time, the design of the fourth partition plate 502a also has a certain limiting effect, which will also be conducive to improving the stability of the installation of the insulating bracket 500.

[0060] The shield 600 is located above the insulating support 500 in the height direction of the circuit breaker, that is, the shield 600 shields the insulating support 500 and the three terminals 1001 on the first side S1 of the first contactor 100 and the second contactor 200. There are many ways to fix the shield 600, which can be detachably matched with the first contactor 100 (for example, plug-in matching, snap-on matching, screw fastening), or detachably matched with the second contactor 200 (for example, plug-in matching, snap-on matching, screw fastening), or detachably matched with the insulating support 500. In this embodiment, the shield 600 and the insulating support 500 are fastened by screws, that is, two insert nuts 504 are provided on the insulating support 500, and corresponding mounting holes are opened on the shield 600, and the screws pass through the mounting holes and are fastened with the insert nuts 504, thereby ensuring the stable installation of the shield 600.

[0061] The controller 700 is at least used to control the on and off of the electromagnetic system inside the first contactor 100 and the second contactor 200 to realize the connection and disconnection of the corresponding contactor. The contactor here is also located on the first side S1 of the first contactor 100 and the second contactor 200. The controller 700 here is located below the insulating bracket 500 and the connecting part 4001, and is fastened to the bottom plate 300 by screws.

[0062] The first contactor 100 is exposed outside the first contactor 100, that is, the three terminals 1001 on the first side S1 are all arranged beyond the shell of the first contactor 100, in order to ensure the phase insulation at the terminal 1001. The three terminals 1001 are separated by two phase partitions 1002, and the phase partitions 1002 and the first contactor 100 are plug-in arranged. There is also a nut seat 1003 below the three terminals 1001 on the first side S1 of the first contactor 100, and nuts are arranged inside the nut seat 1003, and the number and position of the nuts correspond to the three terminals 1001 one by one. The nut seat 1003 is provided with a partition groove 1003a, and the lower end of the phase partition 1002 is inserted into the partition groove, and the phase partition 1002 and the nut seat 1003 are arranged alternately. The insulating bracket 500 has a first insulating portion 505 extending toward the phase partition 1002 . The first insulating portion 505 here penetrates into the two phase partitions 1002 and is arranged alternately with the two phase partitions 1002 .

[0063] Since the features of the second contactor 200, such as the terminal 1001, the phase partition 1002, the nut seat 1003 and the first insulating part 505 corresponding to the insulating bracket 500, are similar to those of the first contactor 100, these features of the second contactor 200 will not be described in detail, and reference may be made to the first contactor 100.

[0064] Although the above embodiment exemplifies the first contactor 100 and the second contactor 200 having the same structure as the current specification, it is not limited to this case and can also be applied to contactors having different current specifications.

[0065] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without contradiction.

[0066] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A contactor group, comprising a first contactor, a second contactor and three hard busbars; the three hard busbars each comprise two terminal portions and a connecting portion connecting the two terminal portions, the terminal portion being used to connect with the terminals of the first contactor and the second contactor, the three terminals on the first side of the first contactor and the second contactor corresponding to each other and respectively connected through the three hard busbars; characterized in that: The connection parts of the three hard busbars are arranged in sequence in the height direction of the first contactor and the second contactor, and are the first connection part, the second connection part and the third connection part from bottom to top respectively; it also includes an insulating bracket, the insulating bracket includes a first partition, a second partition and two side plates, and the two ends of the first partition and the second partition are respectively connected by two side plates; in the height direction of the connection part, the first partition separates the first connection part from the second connection part, and the second partition separates the second connection part from the third connection part; in the length direction of the connection part, the two side plates separate the two sides of the second connection part from the first connection part and the second connection part.

2. A contactor assembly according to claim 1, characterized in that: The first partition plate, the second partition plate and the two side plates together form a slot whose size matches that of the second connecting part, and the second connecting part is located in the slot.

3. A contactor assembly according to claim 2, characterized in that: The first partition plate and / or the second partition plate are provided with hollow holes.

4. A contactor assembly according to claim 1, characterized in that: The three terminals of the first contactor are separated by two phase partitions or / and the three terminals of the second contactor are separated by two phase partitions; the insulating bracket also includes a first insulating part extending between the two phase partitions and staggered with the two phase partitions.

5. A contactor assembly according to claim 1, characterized in that: A third partition is also provided on the lower surface of the first partition, and the third partition is distributed on both sides of the first connecting portion in the width direction. In the width direction of the connecting portion, the third partition separates at least a portion of the first connecting portion from the second connecting portion; And / or, a fourth partition is further provided on the upper surface of the second partition, and the fourth partition is distributed on both sides of the width direction of the third connecting part. In the width direction of the connecting part, the fourth partition separates at least a part of the third connecting part from the second connecting part.

6. A contactor assembly according to any one of claims 1 to 5, characterized in that: It also includes a shield, which shields the insulating bracket and the three terminals on the first side of the first contactor and the second contactor; the shield is detachably matched with the first contactor, or / and the shield is detachably matched with the second contactor, and / or the shield is detachably matched with the insulating bracket.

7. A contactor assembly according to any one of claims 1 to 5, characterized in that: The utility model also comprises a controller, which is located below the insulating bracket and the connecting part.

8. A contactor assembly according to any one of claims 1, 2, 3 or 5, characterized in that: The three terminals on the first side of the first contactor are exposed outside the first contactor, and further include a nut seat, the nut seat is located below the three terminals on the first side of the first contactor, and nuts corresponding to the three terminals on the first side of the first contactor are arranged on the nut seat; And / or, the three terminals on the first side of the second contactor are exposed outside the second contactor, and further include a nut seat, which is located below the three terminals on the first side of the second contactor, and the nut seat is provided with nuts corresponding to the three terminals on the first side of the second contactor.

9. A contactor assembly according to claim 8, characterized in that: It also includes two phase partitions arranged between the three terminals of the first contactor, the nut seat is provided with a partition embedding groove, the lower end of the phase partition is inserted into the partition embedding groove, and the phase partition and the nut seat are arranged alternately; And / or, it also includes two phase partitions arranged between the three terminals of the second contactor, the nut seat is provided with a partition embedding groove, the lower end of the phase partition is inserted into the partition embedding groove, and the phase partition and the nut seat are staggered.

10. A contactor assembly according to claim 1, characterized in that: It also includes a protective cover, which is located above the insulating bracket. An insert nut is arranged in the insulating bracket, and the protective cover and the insert nut are fastened by bolts; Or / and, further comprising a base plate and a controller, the first contactor, the second contactor and the controller are all fixed on the base plate, and the controller is located on a first side of the first contactor and the second contactor.

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