Side expansion connector for electric power combined cabinet
By designing a power-on-cage side expansion connector including multiple copper plates and spring rings, the problem of abnormalities in the existing connectors during the connection process is solved, and higher electrical performance and mechanical strength are achieved.
Patent Information
- Application Number
- CN202421676861.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-16
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-07-16
AI Technical Summary
The existing side expansion connectors for power cabinets are prone to abnormalities during the connection process, and their structures are prone to problems during the connection process, resulting in insufficient electrical performance and mechanical strength.
A side expansion connector for power cabinets is designed, including a plurality of copper sheets ring-shapedly abutting the outer periphery of the mandrel, forming a columnar inner cavity, and locking the copper sheet by a spring ring to improve the stability of the connection and contact area.
By improving the contact area and structural stability between the connector and the copper sheet, abnormal problems during the connection process are solved, and electrical performance and mechanical strength are improved.
Smart Images
Figure CN223007083U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of connectors, and particularly relates to a side-expanding connector for power cabinet parallel connection. Background Art
[0002] Power cabinet parallel connection refers to the parallel combination of power equipment or systems. In the power system, in order to increase the power supply capacity or achieve redundant power supply, multiple devices or systems are often paralleled, and such a combination method is called "cabinet parallel connection". The side-expanding connector is used for expansion or connection on the side of the device. In the scenario of power cabinet parallel connection, the function of the side-expanding connector is to enable lateral expansion connection between different devices or systems to achieve the overall function of the power system. The side-expanding connector for power cabinet parallel connection, as an important part of the power system, its quality and performance are directly related to the stable operation of the power grid.
[0003] The connector needs to have high electrical performance and mechanical strength. At present, the combination between the side-expanding connector and the connector head is prone to abnormalities, and the structure of the side-expanding connector itself is also prone to abnormalities during the connection process. Summary of the Utility Model
[0004] The main purpose of the utility model is to provide a side-expanding connector for power cabinet parallel connection, aiming to solve the problems that the connector needs to have high electrical performance and mechanical strength, the combination between the current side-expanding connector and the connector head is prone to abnormalities, and the structure of the side-expanding connector itself is also prone to abnormalities during the connection process.
[0005] To achieve the above purpose, the utility model provides a side-expanding connector for power cabinet parallel connection, including:
[0006] A mandrel;
[0007] A plurality of copper sheets, annularly embracing the outer periphery of the mandrel to form a columnar inner cavity in the middle. The copper sheets are integrally in an arc plate shape. In the length direction, the copper sheets include a main body plate in the middle and fastening plates connected to both ends of the main body plate. The fastening plates are located in the middle of the width direction of the main body plate. At both ends of the width direction of the main body plate, there are protruding edges arranged along the length direction of the main body plate. On the outer side of the free end of the fastening plate away from the main body plate, there is an outward-expanding edge, and on the inner side, there is a circular chamfer. The outer surface of the copper sheet is provided with a silver plating layer. Among them, the mandrel is arranged in the middle of the length direction of the inner cavity;
[0008] Two snap ring, corresponding to the fastening plates and locking a plurality of the copper sheets. The snap ring has a notch in the circumferential direction. Among them, when the snap ring is fixed to a plurality of the copper sheets, both ends in the height direction of the snap ring respectively abut against the protruding edge and the outward-expanding edge.
[0009] Further, the distance between the snap ring and the mandrel in the length direction of the copper sheet is 1.0 to 1.3 times the radius of the inner cavity.
[0010] Further, the radius of curvature of the inner side surface of the snap ring is between 0.985 and 0.995 times the radius of curvature of the outer side surface of the copper sheet.
[0011] Further, the number of the copper sheets is three and they are evenly arranged circumferentially.
[0012] Further, the circumferential interval angle between two adjacent copper sheets in the circumferential direction is 5 to 10 degrees.
[0013] Further, fixing protrusions are arranged on the copper sheet corresponding to the notch of the snap ring.
[0014] Further, the thickness of the silver plating layer is between 1 and 3 micrometers.
[0015] Further, a chromium plating layer is arranged on the surface of the snap ring.
[0016] Further, the angle occupied by the notch in the circumferential direction of the snap ring is 25 to 35 degrees.
[0017] Further, the thickness dimension of the snap ring is greater than 2 millimeters.
[0018] The side expansion connector for power cabinet connection provided by the present utility model has a plurality of copper sheets annularly embracing the outer periphery of the mandrel to form a columnar inner cavity in the middle, and the contact area between the connector head and the copper sheet is improved after installation; protruding edges are arranged at both ends in the width direction of the main body plate, an outer expansion edge is arranged on the outer side of the free end of the fastening plate away from the main body plate, and a round chamfer is arranged on the inner side. The installation process of the connector head is guided and made smoother by the round chamfer on the copper sheet. Both ends in the height direction of the snap ring respectively abut against the protruding edge and the outer expansion edge, thereby reducing the possibility of abnormal displacement of the snap ring in the length direction of the expansion connector. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 is an installation schematic diagram (not connected) of the side expansion connector for power cabinet connection according to an embodiment of the present utility model;
[0020] Figure 2 is Figure 1 a partial enlarged view of
[0021] Figure 3 is an installation schematic diagram (connected) of the side expansion connector for power cabinet connection according to an embodiment of the present utility model;
[0022] Figure 4 is a schematic diagram of the copper sheet in the side expansion connector for power cabinet connection according to an embodiment of the present utility model;
[0023] Figure 5 is Figure 4 an enlarged view of part A in
[0024] Figure 6 is Figure 4 an enlarged view of part B in
[0025] Figure 7 is a layout schematic diagram of copper sheets in a side - expansion connector for power cabinet connection in an embodiment of the present utility model;
[0026] Figure 8 is a schematic diagram of a core rod in a side - expansion connector for power cabinet connection in an embodiment of the present utility model.
[0027] The realization of the purpose, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments
[0028] It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0029] Those skilled in the art of the present technology can understand that unless specifically stated, the singular forms "a", "an", "the", "above" and "this" used herein may also include the plural forms. It should be further understood that the term "including" used in the description of the present utility model means the presence of the described features, integers, steps, operations, elements, units, modules and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, units, modules, components and / or their groups. It should be understood that when we say that an element is "connected" or "coupled" to another element, it can be directly connected or coupled to other elements, or there may also be intermediate elements. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The phrase "and / or" used herein includes all or any unit and all combinations of one or more of the associated listed items.
[0030] Those skilled in the art of the present technology can understand that unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of those of ordinary skill in the field to which the present utility model belongs. It should also be understood that terms such as those defined in a general dictionary should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted with an idealized or overly formal meaning unless specifically defined as here.
[0031] Referring to Figures 1 to 8 , in an embodiment of the present utility model, a side - expansion connector for power cabinet connection includes:
[0032] a core rod 100;
[0033] A plurality of copper sheets 200 are annularly held around the outer periphery of the mandrel 100, and a columnar inner cavity 010 is formed in the middle. The copper sheets 200 are integrally in the shape of an arc plate. The copper sheets 200 include a main body plate 210 in the middle in the length direction and fastening plates 220 connected to both ends of the main body plate 210. The fastening plates 220 are located in the middle in the width direction of the main body plate 210. Protruding edges 211 are provided at both ends in the width direction of the main body plate 210, and the protruding edges 211 are arranged along the length direction of the main body plate 210. An outwardly expanding edge 221 is provided on the outer side of the free end of the fastening plate 220 away from the main body plate 210, and a rounded chamfer 222 is provided on the inner side. A silver plating layer is provided on the outer surface of the copper sheet 200. Among them, the mandrel 100 is arranged in the middle in the length direction of the inner cavity 010;
[0034] Two snap rings 300 are provided corresponding to the fastening plates 220 to lock the plurality of copper sheets 200. The snap rings 300 are provided with notches in the circumferential direction. Among them, when the snap rings 300 are fixed to the plurality of copper sheets 200, both ends in the height direction of the snap rings 300 respectively abut against the protruding edges 211 and the outwardly expanding edges 221.
[0035] In the prior art, connectors need to have high electrical performance and mechanical strength. At present, the combination between the side-expanding connector and the connector head is prone to abnormalities, and the structure of the side-expanding connector itself is also prone to abnormalities during the connection process.
[0036] In the present utility model, the side-expanding connector for power cabinet connection includes a mandrel 100, a plurality of copper sheets 200 and two snap rings 300.
[0037] A plurality of copper sheets 200 are annularly held around the outer periphery of the mandrel 100, and a columnar inner cavity 010 is formed in the middle. The copper sheets 200 are integrally in the shape of an arc plate. The inner cavity 010 is cylindrical, so that the contact area between the connector head 020 and the copper sheets 200 is increased after installation. The copper sheets 200 include a main body plate 210 in the middle in the length direction and fastening plates 220 connected to both ends of the main body plate 210. The fastening plates 220 are located in the middle in the width direction of the main body plate 210, and vacancies are formed at both ends in the width direction of the fastening plates 220. Protruding edges 211 are provided at both ends in the width direction of the main body plate 210, and the protruding edges 211 are arranged along the length direction of the main body plate 210. An outwardly expanding edge 221 is provided on the outer side of the free end of the fastening plate 220 away from the main body plate 210, and a rounded chamfer 222 is provided on the inner side. Through the setting of the rounded chamfer 222 on the copper sheets 200, the installation process of the connector head 020 is guided and made smoother. A silver plating layer is provided on the outer surface of the copper sheets 200, providing electrical performance. The mandrel 100 is arranged in the middle in the length direction of the inner cavity 010.
[0038] Two snap rings 300 are provided corresponding to the fastening plates 220 to lock the plurality of copper sheets 200. The snap ring 300 is provided with a notch in the circumferential direction, which provides a basis for the installation of the snap ring 300, especially in the presence of the outward expansion edge 221. When the snap ring 300 is fixed to the plurality of copper sheets 200, both ends of the snap ring 300 in the height direction respectively abut against the protruding edge 211 and the outward expansion edge 221, thereby reducing the possibility of abnormal displacement of the snap ring 300 in the length direction of the expansion connector.
[0039] In summary, the plurality of copper sheets 200 are annularly held around the outer periphery of the mandrel 100 and a columnar inner cavity 010 is formed in the middle, and the contact area between the connector 020 and the copper sheet 200 is increased after installation; protruding edges 211 are provided at both ends of the main body plate 210 in the width direction, and an outward expansion edge 221 is provided on the outer side of the free end of the fastening plate 220 away from the main body plate 210, and a round chamfer 222 is provided on the inner side. The setting of the round chamfer 222 on the copper sheet 200 guides the installation process of the connector 020 to be smoother. Both ends of the snap ring 300 in the height direction respectively abut against the protruding edge 211 and the outward expansion edge 221, thereby reducing the possibility of abnormal displacement of the snap ring 300 in the length direction of the expansion connector.
[0040] In one embodiment, the distance between the snap ring 300 and the mandrel 100 in the length direction of the copper sheet 200 is 1.0 to 1.3 times the radius of the inner cavity 010.
[0041] In this embodiment, in order to improve the fixing effect of the side expansion connector on the connector 020, the distance between the snap ring 300 and the mandrel 100 in the length direction of the copper sheet 200 is limited. Since the diameter of the connector 020 is basically the same as the diameter of the inner cavity 010, the above-mentioned distance is limited to 1.0 to 1.3 times the radius of the inner cavity 010. When the copper sheet 200 is pressed down by the snap ring 300, the connector 020 is enclosed in the inner cavity 010.
[0042] In one embodiment, the radius of curvature of the inner side surface of the snap ring 300 is between 0.985 and 0.995 times the radius of curvature of the outer side surface of the copper sheet 200.
[0043] In this embodiment, considering that the connection strength between the snap ring 300 and the copper sheet 200 is important for the structural stability of the side expansion connector, the radius of curvature of the inner side surface of the snap ring 300 is 0.985 to 0.995 times the radius of curvature of the outer side surface of the copper sheet 200. The difference in the radius of curvature between the two provides a space for elastic deformation. At this time, not only the elastic force of the snap ring 300 fixes the copper sheet 200, but also the deformation of the copper sheet 200 forms a more stable support for the snap ring 300. At this time, the structural strength of the entire side expansion connector is improved.
[0044] Refer toFigure 1 , in one embodiment, the number of the copper sheets 200 is three and they are evenly arranged circumferentially.
[0045] In this embodiment, a suitable number of copper sheets 200 is given, thus achieving a combination of convenient processing and excellent fixing effect. If the number of copper sheets 200 is too small, the volume of a single sheet is relatively large, which is not convenient for installation. At the same time, the difficulty of deformation increases, and the resulting fixing effect is weakened. If the number of copper sheets 200 is too large, the volume of a single sheet is relatively small, and the structural strength is prone to abnormality while the complexity of the installation process also increases.
[0046] , in one embodiment, the circumferential interval angle between two adjacent copper sheets 200 in the circumferential direction is 5 to 10 degrees.
[0047] In this embodiment, first of all, two adjacent copper sheets 200 cannot be in contact with each other in the circumferential direction, so an interval angle is required. Secondly, the interval angle cannot be too large, otherwise it is difficult to achieve the structural strength of the entire side expansion connector. Therefore, the circumferential interval angle between two adjacent copper sheets 200 in the circumferential direction is limited to 5 to 10 degrees.
[0048] , in one embodiment, fixing protrusions are provided on the copper sheet 200 corresponding to the notch of the snap ring 300.
[0049] In this embodiment, due to the large impact force during the use of the side expansion connector, there is a risk of abnormal rotation of the snap ring 300. When the spring ring rotates abnormally to a certain angle, its fastening force is likely to be partially lost, resulting in a certain degree of failure of the electrical conductivity and abnormal effect of the power cabinet connection. Therefore, fixing protrusions are provided on the copper sheet 200 corresponding to the notch of the snap ring 300 to limit the snap ring 300 through the fixing protrusions. At this time, the possibility of abnormal rotation of the snap ring 300 is greatly reduced. The processing process of the fixing protrusions can be post-processing or processed synchronously during the processing of the copper sheet 200.
[0050] , in one embodiment, the thickness of the silver plating layer is between 1 and 3 microns.
[0051] In this embodiment, the thickness of the silver plating layer is limited. When the silver plating layer is too thin, the electrical conductivity cannot meet the standard, while when the silver plating layer is too thick, the radial fastening force of the entire side expansion connector may not meet the standard. Specifically, a silver plating layer with a thickness of 1 to 3 microns can comprehensively optimize the above two properties.
[0052] , in one embodiment, a chromium plating layer is provided on the surface of the snap ring 300.
[0053] In this embodiment, considering that the fastening force provided by the snap ring 300 is crucial for the electrical conductivity of the entire side-expanding connector, in order to improve the weather resistance of the snap ring 300, a chromium plating layer is provided on its surface, and the risk of being eroded during storage, installation, and use of the snap ring 300 is increased through the chromium plating layer. Specifically, the thickness of the chromium plating layer is selected according to requirements, for example, greater than two micrometers.
[0054] In one embodiment, the angle occupied by the notch in the circumferential direction of the snap ring 300 is 25 to 35 degrees.
[0055] In this embodiment, considering the fastening force provided by the snap ring 300, the larger the notch, the simpler the installation process, but the lower the provided fastening force, and at the same time, loosening is likely to occur; when the notch is smaller, the installation difficulty increases, and elastic failure is likely to occur during the installation process; therefore, the angle occupied by the notch in the circumferential direction of the snap ring 300 is limited to 25 to 35 degrees, thereby achieving performance coordination.
[0056] In one embodiment, the thickness dimension of the snap ring 300 is greater than 2 mm.
[0057] In this embodiment, considering that the strength of the snap ring 300 is relatively important for the structural strength of the side-expanding connector, the thickness dimension of the snap ring 300 is limited to be greater than 2 mm, so as to ensure the structural strength of both the snap ring 300 and the side-expanding connector.
[0058] In summary, for the side-expanding connector for power cabinet connection provided by the present utility model, a plurality of copper sheets 200 are annularly held around the outer periphery of the core rod 100 to form a columnar inner cavity 010 in the middle, and the contact area between the connector head 020 and the copper sheet 200 is increased after installation; protruding edges 211 are provided at both ends in the width direction of the main body plate 210, an outward-expanding edge 221 is provided on the outer side of the free end of the fastening plate 220 away from the main body plate 210, and a circular chamfer 222 is provided on the inner side. The installation process of the connector head 020 is guided and made smoother through the setting of the circular chamfer 222 on the copper sheet 200. The two ends in the height direction of the snap ring 300 respectively abut against the protruding edge 211 and the outward-expanding edge 221, thereby reducing the possibility of abnormal displacement of the snap ring 300 in the length direction of the expansion connector.
[0059] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present utility model.
Claims
1. A side expansion connector for power cabinet connection, characterized in that: include: A mandrel (100); A plurality of copper sheets (200) are annularly embraced on the outer periphery of the core rod (100) and a columnar inner cavity (010) is formed in the middle. The copper sheet (200) is in the shape of an arc plate as a whole. The copper sheet (200) includes a main body plate (210) in the middle and buckle plates (220) connected to both ends of the main body plate (210) in the length direction. The buckle plates (220) are located in the middle of the main body plate (210) in the width direction. The main body plate (210) ) are provided with protruding edges (211) at both ends in the width direction, the protruding edges (211) are arranged along the length direction of the main body plate (210), the outer side of the free end of the buckle plate (220) away from the main body plate (210) is provided with an outer expansion edge (221) and the inner side is provided with a round chamfer (222), the outer surface of the copper sheet (200) is provided with a silver coating, wherein the core rod (100) is arranged in the middle of the length direction of the inner cavity (010); Two circlip rings (300) are arranged corresponding to the buckle plates (220) to lock the plurality of copper sheets (200), and the circlip rings (300) are provided with notches in the circumferential direction. When the circlip rings (300) are fixed to the plurality of copper sheets (200), the two ends of the circlip rings (300) in the height direction respectively abut against the protruding edge (211) and the outwardly expanded edge (221).
2. The side expansion connector for power cabinet connection according to claim 1, characterized in that: The distance between the circlip ring (300) and the core rod (100) in the length direction of the copper sheet (200) is 1.0 to 1.3 times the radius of the inner cavity (010).
3. The side expansion connector for power cabinet connection according to claim 1, characterized in that: The radius of curvature of the inner side surface of the circlip ring (300) is between 0.985 and 0.995 of the radius of curvature of the outer side surface of the copper sheet (200).
4. The side expansion connector for power cabinet connection according to claim 1, characterized in that: The number of the copper sheets (200) is three and they are evenly arranged around the periphery.
5. The side expansion connector for power cabinet connection according to claim 4, characterized in that: The circumferentially adjacent two copper sheets (200) are spaced apart at an angle of 5 to 10 degrees.
6. The side expansion connector for connecting power cabinets according to any one of claims 1 to 5, characterized in that: A fixing protrusion is provided on the copper sheet (200) corresponding to the notch of the circlip ring (300).
7. The side expansion connector for connecting power cabinets according to any one of claims 1 to 5, characterized in that: The thickness of the silver coating is between 1 and 3 microns.
8. The side expansion connector for connecting power cabinets according to any one of claims 1 to 5, characterized in that: The surface of the circlip ring (300) is provided with a chrome plating layer.
9. The side expansion connector for connecting power cabinets according to any one of claims 1 to 5, characterized in that: The angle occupied by the notch in the circumferential direction of the circlip ring (300) is 25 to 35 degrees.
10. The side expansion connector for connecting power cabinets according to any one of claims 1 to 5, characterized in that: The thickness of the circlip ring (300) is greater than 2 mm.