Moving contact structure and isolating switch

Abstract

The utility model discloses a moving contact structure and an isolation switch, and the structure comprises a first contact assembly, a second contact assembly, and a tensioning part. The first contact assembly and the second contact assembly form a clamping gap for clamping a static contact in the first direction; the first contact assembly comprises a first moving contact piece and a first spring piece. The first spring piece is located on the face, away from the second contact assembly, of the first moving contact piece and at least used for providing spring force needed for clamping the static contact. One end of the tensioning piece is connected with the first spring piece, the other end of the tensioning piece is connected with the second contact assembly, and the first contact assembly and the second contact assembly are connected under the combined action of the tensioning piece and the first spring piece; the deviation rectifying device has the advantage of being good in deviation rectifying capacity.

Description

TECHNICAL FIELD

[0001] The present application relates to a disconnecting switch applied in a power supply system. BACKGROUND

[0002] The moving contact is a component used in the disconnecting switch, which is used to contact and conduct with the preset static contact through its own movement, so as to

[0003] The closing action of the disconnecting switch is realized.

[0004] The existing moving contact, as disclosed in CN220121679U, comprises a contact shell, two moving contact pieces, and two abutting pieces. The two abutting pieces are spring pieces, which are respectively arranged on the two sides of the two moving contact pieces, and provide spring force for clamping the static contact.

[0005] The two moving contact pieces in such structure are seemingly fixed in a contact shell, but in fact, the two moving contact pieces are lack of association. In actual use, when one moving contact piece contacts the static contact, it is easy to deflect, and the other moving contact piece may not deflect accordingly, which is not conducive to the performance of the moving contact.

[0006] Therefore, the correction ability of such moving contact is relatively weak. SUMMARY

[0007] Therefore, the correction ability of such moving contact is relatively weak.

[0008] The present application provides a moving contact structure, which comprises a first contact assembly, a second contact assembly, and a tensioning piece. The first contact assembly and the second contact assembly form a clamping gap for clamping a static contact in a first direction. The first contact assembly comprises a first moving contact piece and a first spring piece. The first spring piece is located on the side of the first moving contact piece away from the second contact assembly, and is used to provide at least the spring force required for clamping the static contact. One end of the tensioning piece is connected to the first spring piece, and the other end is connected to the second contact assembly. Under the joint action of the tensioning piece and the first spring piece, the first contact assembly and the second contact assembly are connected.

[0009] In some embodiments of the present application, the second contact assembly comprises a second moving contact piece. One end of the tensioning piece abuts against the surface of the first spring piece away from the first moving contact piece, and the other end abuts against the surface of the second moving contact piece away from the first moving contact piece.

[0010] In some embodiments of the present application, the number of tensioning pieces is two, and the two tensioning pieces are arranged on the two sides of the second contact assembly in a second direction.

[0011] In some embodiments of the present application, the tensioning member is a U-shaped component; the hollow portions of the two U-shaped components are opposite in opening direction, and the first moving contact piece, the first spring member and a part of the second contact assembly are located in the hollow portion of the U-shaped component.

[0012] In some embodiments of the present application, the second contact assembly comprises a second moving contact piece, and the first moving contact piece and the second moving contact piece are both provided with a clearance opening, and a part of the U-shaped component passes through the clearance opening, so that the first moving contact piece and the second moving contact piece both have an overlapping part with the U-shaped component in the second direction.

[0013] In some embodiments of the present application, the first spring member is recessed in the direction of the first moving contact piece to form a first limiting groove, and one end of the U-shaped component is located in the first limiting groove.

[0014] In some embodiments of the present application, the second contact assembly further comprises a second spring member, and the second spring member is located on the side of the second moving contact piece away from the first contact assembly; the second spring member is recessed in the direction of the second moving contact piece to form a second limiting groove, and the other end of the U-shaped component is located in the second limiting groove.

[0015] In some embodiments of the present application, the tensioning member is a ring-shaped component, the first spring member has a first abutting portion, the second contact assembly has a second abutting portion, and the first abutting portion and the second abutting portion extend into the through hole of the ring-shaped component and abut against the wall of the through hole.

[0016] In some embodiments of the present application, the first moving contact piece comprises two clamping portions and an intermediate portion, the two clamping portions are connected through the intermediate portion, the clamping portions are used for clamping the stationary contact, and the intermediate portion is provided with a through hole.

[0017] In some embodiments of the present application, the first spring member comprises two abutting portions and a main body portion, the two abutting portions are connected through the main body portion, and the tensioning member is connected to the main body portion.

[0018] A disconnector comprises an operating unit layer and a switch unit layer; at least one switch unit layer is provided with the above-mentioned moving contact structure.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] By using the above structure, the first contact assembly and the second contact assembly are connected through the cooperation of the tensioning member and the first spring member, so that the two contact assemblies are connected, and when one of the contact assemblies is deflected by touching the stationary contact, the other contact assembly can also be adaptively deflected, thereby having good deviation correction performance compared with the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be regarded as a limitation to the scope, and for those of ordinary skill in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0022] Figure 1 A schematic diagram of the disconnector according to an embodiment of the present application is shown;

[0023] Figure 2 A schematic diagram of the switch unit layer of the disconnector according to an embodiment of the present application is shown;

[0024] Figure 3 A schematic diagram of the movable contact structure of the first embodiment and the fixed contact according to an embodiment of the present application is shown;

[0025] Figure 4 A schematic diagram of the movable contact structure of the first embodiment according to an embodiment of the present application is shown;

[0026] Figure 5 A schematic diagram of the first and second movable contact pieces of the first embodiment of the movable contact structure according to an embodiment of the present application is shown;

[0027] Figure 6 A schematic diagram of the tensioning member of the first embodiment of the movable contact structure according to an embodiment of the present application is shown;

[0028] Figure 7 A schematic diagram of the movable contact structure of the second embodiment and the fixed contact according to an embodiment of the present application is shown;

[0029] Figure 8 A schematic diagram of the first and second movable contact pieces of the second embodiment of the movable contact structure according to an embodiment of the present application is shown;

[0030] Figure 9 A schematic diagram of the first spring member of the second embodiment of the movable contact structure according to an embodiment of the present application is shown;

[0031] Figure 10 A schematic diagram of the first and second spring members and the tensioning member of the second embodiment of the movable contact structure according to an embodiment of the present application is shown;

[0032] Figure 11 A schematic diagram of the movable contact structure of the third embodiment and the fixed contact according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0033] Embodiments of the present application are described below in the description, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout the drawings. The embodiments described below by referring to the drawings are exemplary only, for the purpose of explaining the present application, and are not to be understood as limiting the present application.

[0034] In the description of the present application, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and is not to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0035] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0036] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature. Embodiments

[0038] As Figures 1-11As shown, the embodiment of the present application is a disconnecting switch.

[0039] The disconnecting switch comprises an operating unit layer 100 and a switch unit layer 200.

[0040] The operating unit layer 100 is internally provided with an operating mechanism, the input end of which is connected with the knob, and the output end of which is connected with the movable contact structure in the switch unit layer 200. Through the user's operation of the knob, the movable contact structure in the switch unit layer 200 can be rotated, so as to realize the closing and breaking of the disconnecting switch. Here, the operating mechanism belongs to the common knowledge in the art, and will not be described here.

[0041] The switch unit layer 200 is sequentially stacked below the operating unit layer 100 along the height direction. The movable contact structures of each switch unit layer 200 are inserted with each other, and the movable contact structure of the first switch unit layer 200 is connected with the output end of the operating mechanism, so that the multiple switch unit layers 200 can be simultaneously moved under the control of the operating mechanism.

[0042] Each switch unit layer 200 has two static contacts 300 and a movable contact structure. Through the rotation of the movable contact structure, the two static contacts 300 are simultaneously contacted to realize the closing, and the two static contacts 300 are simultaneously separated to realize the breaking.

[0043] The movable contact structure is specifically as follows:

[0044] It comprises a movable contact disc 400, a first contact assembly 401, a second contact assembly 402 and a tensioning member 403.

[0045] The movable contact disc 400, the first contact assembly 401, the second contact assembly 402 and the tensioning member 403 are all arranged in the movable contact disc 400.

[0046] The first contact assembly 401 and the second contact assembly 402 form a clamping gap S100 for clamping the static contact 300 in the first direction F1. The first contact assembly 401 comprises a first movable contact piece 401a and a first spring member 401b, the first spring member 401b is arranged on the side of the first movable contact piece 401a away from the second contact assembly 402, and is used at least for providing the spring force required for clamping the static contact 300. Here, the first direction F1 is the height direction, when the movable contact structure is rotated to the static contact 300 entering the clamping gap S100, the first spring member 401b is deformed so that the static contact 300 is clamped.

[0047] One end of the tensioning member 403 is connected to the first spring member 401b, and the other end is connected to the second contact assembly 402. Thus, under the combined action of the tensioning member 403 and the first spring member 401b, the first contact assembly 401 and the second contact assembly 402 are connected. Essentially, when the tensioning member 403 connects the first spring member 401b to the second contact assembly 402, the spring force of the first spring member 401b can act on the second contact assembly 402 through the tensioning member 403, thereby establishing a connection between the two.

[0048] With this configuration, when one contact assembly deflects upon contacting the stationary contact 300, the other contact assembly can also deflect accordingly, resulting in better correction performance compared to existing technologies.

[0049] There are many options for the first spring component 401b (such as spring sheet, spring wire, etc.), but a spring sheet is used here as a preferred option.

[0050] There are many ways to select the second contact assembly 402. It can be a structure with only one moving contact or a structure that includes another spring.

[0051] by Figures 3-6 For example, in this configuration, the second contact assembly 402 only includes the second moving contact piece 402a and does not include other spring components. In this configuration, one end of the tensioning member 403 abuts against the surface of the first spring component 401b away from the first moving contact piece 401a, and the other end abuts against the surface of the second moving contact piece 402a away from the first moving contact piece 401a.

[0052] In this configuration, the force clamping the stationary contact 300 comes from the first spring 401b, while the first moving contact piece 401a and the second moving contact piece 402a primarily carry current. This configuration has unique advantages compared to multi-spring configurations (where the second moving contact assembly also has a spring): for example, its structure is simpler, reducing the driving force required by the operating mechanism. This is particularly noticeable when the number of switch unit layers 200 is higher, making it more suitable for structures with more than one layer. Furthermore, when clamping the stationary contact 300, the main offset occurs in the first moving contact piece 401a and the first spring 401b, which facilitates the entry of the stationary contact 300 into the clamping gap S100.

[0053] In this configuration, there can be two tensioning members 403. The two tensioning members 403 are respectively located on both sides of the first contact assembly 401 and the second contact assembly 402 in the second direction (width direction) F2, that is, on both sides in the second direction F2. This arrangement makes the force on the first contact assembly 401 and the second contact assembly 402 more even, which is more conducive to improving the stability of the entire moving contact structure.

[0054] As a preferred embodiment, the tensioning member 403 adopts a U-shaped component, which includes a first actuating part 4031, a connecting part 4032, and a second actuating part 4033. The first actuating part 4031 and the second actuating part 4033 are connected by the connecting part 4032. The first actuating part 4031 abuts against the first spring member 401b, and the second actuating part 4033 abuts against the second moving contact piece 402a. The opening directions of the hollow portions S200 of the two U-shaped components are opposite. After assembly, the first moving contact piece 401a, the first spring member 401b, and a portion of the second contact assembly 402 are located in the hollow portions S200 of the U-shaped components. This structural arrangement allows the tensioning member 403 to be more compact with the first contact assembly 401 and the second contact assembly 402, which helps to reduce the space occupied by the entire moving contact structure.

[0055] In this configuration, both the first moving contact piece 401a and the second moving contact piece 402a have clearance openings 4012, which allow a portion of the U-shaped component to pass through. This results in both the first moving contact piece 401a and the second moving contact piece 402a overlapping with the U-shaped component in the second direction F2. This structural arrangement makes the overall structure more compact, further reducing the space occupied by the entire moving contact structure.

[0056] by Figures 8-10 For example, in this configuration, the second contact assembly 402 includes both a second moving contact piece 402a and a second spring member 402b. The second spring member 402b is located on the surface of the second moving contact piece 402a away from the first contact assembly 401. One end of the tensioning member 403 abuts against the surface of the first spring member 401b away from the first moving contact piece 401a, and the other end abuts against the surface of the second spring member 402b away from the second moving contact piece 402a. In this configuration, the first moving contact piece 401a and the second moving contact piece 402a primarily perform the function of carrying current, while both the first spring member 401b and the second spring member 402b provide the spring force for clamping the stationary contact 300. In this configuration, the multi-spring structure provides a greater clamping force on the stationary contact 300, which is more conducive to clamping the stationary contact 300.

[0057] In this configuration, the number of tensioning members 403 can also be two, respectively located on both sides of the first contact assembly 401 and the second contact assembly 402 in the second direction F2. This arrangement makes the force on the first contact assembly 401 and the second contact assembly 402 more even, which is more conducive to improving the stability of the entire moving contact structure.

[0058] Similarly, in this case, the tensioning member 403 can also be a U-shaped component. The U-shaped component here is a pull rod, which includes a first actuating part 4031, a connecting part 4032, and a second actuating part 4033. The first actuating part 4031 and the second actuating part 4033 are connected by the connecting part 4032. The first actuating part 4031 abuts against the first spring member 401b, and the second actuating part 4033 abuts against the second spring member 402b. The opening directions of the hollow portions S200 of the two U-shaped components are opposite. After this structure is assembled, a portion of the first moving contact piece 401a, the first spring member 401b, the second moving contact piece 402a, and the second spring member 402b are located within the hollow portion S200 of the U-shaped component. This structural arrangement allows the tensioning member 403 to be more compact with the first contact assembly 401 and the second contact assembly 402, which helps to reduce the space occupied by the entire moving contact structure.

[0059] In this configuration, both the first moving contact piece 401a and the second moving contact piece 402a have clearance openings 4012, which allow a portion of the U-shaped component to pass through. This results in both the first moving contact piece 401a and the second moving contact piece 402a overlapping with the U-shaped component in the second direction F2. This structural arrangement makes the overall structure more compact, further reducing the space occupied by the entire moving contact structure.

[0060] The first spring member 401b is recessed towards the direction of the first moving contact piece 401a to form a first limiting groove 401b1, and one end of the U-shaped component is located within the first limiting groove 401b1. This structure facilitates the engagement between the tensioning member 403 and the first spring member 401b, improving the stability after assembly.

[0061] The second spring member 402b is recessed towards the direction of the second moving contact piece 402a to form a second limiting groove 402b1, and the other end of the U-shaped component is located within the second limiting groove 402b1. This structure facilitates the engagement between the tensioning member 403 and the second spring member 402b, improving the stability after assembly.

[0062] In addition to using a U-shaped component, the tensioning component 403 can also use a ring-shaped component.

[0063] by Figure 11For example, the tensioning member 403 is a ring-shaped component. The first spring member 401b has a first abutting portion 401b2, and the second spring member 402b has a second abutting portion 402b2. Both the first abutting portion 401b2 and the second abutting portion 402b2 extend into the through hole of the ring-shaped component and abut against the wall of the through hole. The tensioning member 403 with this structure is also very convenient to install.

[0064] Regardless of the method described above, its first moving contact piece 401a includes two clamping portions 4010 and a middle portion 4011, and the second moving contact piece 402a also includes clamping portions 4010 and a middle portion 4011. The clamping portions 4010 are used to clamp the stationary contact 300, and the middle portion 4011 is used to connect the two clamping portions 4010. The middle portion 4011 has a through hole 4013. The design of the through hole 4013 can make room for the structure of the moving contact plate 400, such as the linkage structure between the moving contact plates 400.

[0065] Regardless of the method described above, the first spring member 401b includes two pressing portions 4014 and a main body 4015, with the two pressing portions 4014 connected by the main body 4015. The pressing portions 4014 press against the first moving contact piece 401a, and there is a gap between the main body 4015 and the first moving contact piece 401a. The tensioning member 403 is connected to the main body 4015. When the stationary contact 300 enters the clamping gap S100, the gap between the main body 4015 and the first moving contact piece 401a decreases, thus the first spring member 401b can generate a spring force that makes the first moving contact piece 401a and the stationary contact 300 fit more tightly together.

[0066] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," 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 application. 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0067] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A moving contact structure, characterized in that: The device includes a first contact assembly, a second contact assembly, and a tensioning member. The first contact assembly and the second contact assembly form a clamping gap for clamping a stationary contact in a first direction. The first contact assembly includes a first moving contact piece and a first spring member. The first spring member is located on the side of the first moving contact piece away from the second contact assembly and is used to provide at least the spring force required to clamp the stationary contact. One end of the tensioning member is connected to the first spring member, and the other end is connected to the second contact assembly. Under the combined action of the tensioning member and the first spring member, the first contact assembly and the second contact assembly are connected.

2. The moving contact structure according to claim 1, characterized in that: The second contact assembly includes a second moving contact piece, with one end of the tensioning member abutting against the surface of the first spring member away from the first moving contact piece, and the other end abutting against the surface of the second moving contact piece away from the first moving contact piece.

3. The moving contact structure according to claim 1, characterized in that: There are two tensioning components, which are respectively located on both sides of the first contact assembly and the second contact assembly in the second direction.

4. The moving contact structure according to claim 3, characterized in that: The tensioning component is a U-shaped part; the opening directions of the hollow parts of the two U-shaped parts are opposite, and the first moving contact piece, the first spring piece, and a part of the second contact assembly are located in the hollow part of the U-shaped part.

5. The moving contact structure according to claim 4, characterized in that: The second contact assembly includes a second moving contact piece. Both the first and second moving contact pieces have clearance openings. A portion of the U-shaped component passes through the clearance openings, so that in the second direction, both the first and second moving contact pieces overlap with the U-shaped component.

6. The moving contact structure according to claim 4, characterized in that: The first spring member is recessed in the direction of the first moving contact piece to form a first limiting groove, and one end of the U-shaped member is located in the first limiting groove.

7. A moving contact structure according to claim 6, characterized in that: The second contact assembly further includes a second spring member, which is located on the side of the second moving contact piece away from the first contact assembly; the second spring member is recessed in the direction of the second moving contact piece to form a second limiting groove, and the other end of the U-shaped component is located in the second limiting groove.

8. A moving contact structure according to claim 3, characterized in that: The tensioning member is a ring-shaped component. The first spring component has a first abutting portion, and the second contact assembly has a second abutting portion. The first abutting portion and the second abutting portion extend into the through hole of the ring-shaped component and abut against the wall of the through hole.

9. A moving contact structure according to claim 1, characterized in that: The first moving contact piece includes two clamping parts and a middle part. The two clamping parts are connected through the middle part. The clamping parts are used to clamp the stationary contact. A through hole is provided on the middle part. And / or, the first spring member includes two pressing parts and a main body, the two pressing parts are connected through the main body, and the tensioning member is connected to the main body.

10. A disconnecting switch, comprising an operating unit layer and a switching unit layer; characterized in that: At least one switching unit layer has a moving contact structure as described in any one of claims 1-9.

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