Test fixture of 1U circuit breaker

Abstract

The utility model belongs to the technical field of 1U circuit breaker testing, and particularly relates to a testing clamp of a 1U circuit breaker. The utility model provides a test fixture of a 1U circuit breaker. The test fixture comprises a base, a cover body and a conducting bar, wherein the base is provided with a socket. The cover bodies are of an annular structure, the number of the cover bodies is at least two, and different cover bodies have different lengths. According to the test fixture of the 1U circuit breaker, the application environment of the 1U circuit breaker is simulated, and the test result is more accurate. Besides, the 1U circuit breaker comprises a plurality of cover bodies which are matched with the base and have different lengths, so that the 1U circuit breaker can be suitable for installation of 1U circuit breakers with multiple lengths. Besides, according to the test fixture of the 1U circuit breaker, the same base and different cover bodies can be assembled, the test fixture is used for testing circuit breakers with different lengths, and the effect of saving cost is achieved.

Description

Technical Field

[0001] The present application belongs to the technical field of 1U circuit breaker testing, and in particular relates to a test fixture for a 1U circuit breaker. Background Art

[0002] 1U circuit breakers usually refer to circuit breakers used in rack-mounted environments. "1U" refers to the height unit of the circuit breaker, which is measured according to the standard rack unit. "1U" represents a height of approximately 1.75 inches (44.45 mm). 1U circuit breakers are designed for environments such as server rooms and data centers to protect and control electrical equipment in these environments.

[0003] In order to ensure the safety and reliability of 1U circuit breakers, type tests need to be performed on 1U circuit breakers. Utility Model Content

[0004] The present application provides a test fixture for a 1U circuit breaker, which can be used to install the 1U circuit breaker during a type test, so as to facilitate the smooth progress of the type test.

[0005] The test fixture of the 1U circuit breaker provided in the present application includes a base, a cover and a conductive bar, and the base is provided with a socket. The cover is a ring-shaped structure, and the number of the cover is at least two, and different cover bodies have different lengths. Any cover body can be detachably connected to the base to form a accommodating cavity with an opening. The depth of the accommodating cavity is adapted to the length of the 1U circuit breaker to be tested, and the opening is opposite to the base. The conductive bar is inserted into the accommodating cavity through the socket to provide an electrical signal to the 1U circuit breaker to be tested.

[0006] Based on the above description, the test fixture of the 1U circuit breaker provided by the present application simulates the application environment of the 1U circuit breaker, and the test results are more accurate. In addition, the 1U circuit breaker of the present application includes a plurality of covers of different lengths adapted to the base, so that it can be suitable for the installation of 1U circuit breakers of multiple lengths. In addition, the present application can assemble the same base with different covers for testing circuit breakers of different lengths, which has the effect of saving costs.

[0007] In a possible design, the depth of the accommodating cavity is 70-80% of the length of the 1U circuit breaker to be tested.

[0008] Based on the test fixture of the 1U circuit breaker provided in this embodiment, the depth of the accommodating cavity is 70-80% of the length of the 1U circuit breaker to be tested. In this way, the control of the 1U circuit breaker to be tested by external force can be satisfied, and because the 1U circuit breaker to be tested has a sufficient installation depth, the test fixture can better support and fix the circuit breaker to be tested. Therefore, the test fixture of the present application can also reduce the overall shaking of the 1U circuit breaker during the test, which is conducive to the smooth progress of the operating life test.

[0009] In a possible design, a positioning structure is provided between the cover body and the base. The positioning structure includes a positioning hole and a positioning post that are inserted into each other. One of the positioning hole and the positioning post is provided on the cover body, and the other is provided on the base.

[0010] Based on the test fixture for a 1U circuit breaker provided by this embodiment, by providing a positioning structure between the cover body and the base, it is not only convenient for fixing between the cover body and the base, but also helps to improve the installation accuracy between the cover body and the base.

[0011] In a possible design, a positioning groove is further provided on the side of the base facing the cover body, and the positioning groove is used to limit the 1U circuit breaker to be tested.

[0012] Based on the test fixture for a 1U circuit breaker provided by this embodiment, a positioning groove is further provided on the side of the base facing the cover body. In this way, when the 1U circuit breaker to be tested is installed, the operating end of the 1U circuit breaker to be tested is positioned by the installation opening of the mounting plate, and the socket end of the 1U circuit breaker to be tested is supported and positioned by the positioning groove, which helps to improve the installation accuracy of the 1U circuit breaker to be tested. In addition, during the life test, when the operating life of the 1U circuit breaker to be tested is tested, due to the existence of the positioning groove, the 1U circuit breaker to be tested is not easy to shake.

[0013] In a possible design, the base is further provided with an arc ejection opening, and the arc ejection opening is integrally provided with the socket.

[0014] Based on the test fixture for a 1U circuit breaker provided by this embodiment, when a type test is performed on the 1U circuit breaker to be tested, an arc will be generated inside the 1U circuit breaker to be tested. The arc ejection opening provided on the base of this application facilitates the ejection of the arc. Integrally providing the arc ejection opening and the socket can save processes and is convenient for processing.

[0015] In a possible design, the accommodation cavity can accommodate multiple 1U circuit breakers. Corresponding multiple groups of sockets are provided on the base corresponding to the multiple 1U circuit breakers.

[0016] Based on the test fixture for a 1U circuit breaker provided by this embodiment, during the type test, multiple 1U circuit breakers can be tested simultaneously, improving the test efficiency. And installing multiple 1U circuit breakers in the same accommodation cavity is also closer to the application environment of the 1U circuit breaker. In this way, the test accuracy can also be improved.

[0017] In a possible design, the bus bar is detachably connected to the base. The bus bar belongs to a consumable item, and the detachable connection between the bus bar and the base facilitates the replacement of the bus bar.

[0018] In a possible design, the busbar includes a conductive part and a connecting part. The conductive part includes opposite first and second ends. The first end is used to be inserted into the accommodation cavity through the socket and is plugged into the socket end of the 1U circuit breaker. The second end is provided with a wiring port for connecting a load or a power source. The connecting part is connected to one side of the conductive part and is located between the first end and the second end. The connecting part is provided with a connecting hole, and the busbar is detachably connected to the base through the connecting hole.

[0019] Based on the test fixture of the 1U circuit breaker provided by this embodiment, the busbar includes a conductive part and a connecting part. The connecting part is connected to one side of the conductive part and is located between the first end and the second end. The connecting part is also provided with a connecting hole, and the busbar is detachably connected to the base through the connecting hole. In this way, the overall structure of the busbar is relatively simple, and it is convenient to install the busbar.

[0020] In a possible design, a limiting groove is further provided on the side of the base away from the cover body. The limiting groove is used to limit the connecting part. A fixing hole is further provided at the bottom of the limiting groove. The fixing hole is adapted to the connecting hole for fixing the busbar.

[0021] Based on the test fixture of the 1U circuit breaker provided by this embodiment, a limiting groove is further provided on the side of the base away from the cover body. The limiting groove has an obvious indication effect on the installation position of the busbar. In this way, when installing the busbar, the installation position of the busbar can be quickly determined, and the connecting hole on the busbar can be accurately aligned with the fixing hole on the base, realizing the quick installation of the busbar and the base. In addition, through the positioning of the positioning groove, the installation accuracy of the busbar can be improved. Description of the Drawings

[0022] Figure 1 It is a schematic structural diagram of a 1U circuit breaker.

[0023] Figure 2 Shown is a schematic structural diagram of the test fixture of the 1U circuit breaker provided by the embodiment of the present application.

[0024] Figure 3 It is Figure 2 an exploded view of

[0025] Figure 4 Shown is the installation structure block diagram during the type test of the 1U circuit breaker.

[0026] Figure 5 Shown is a schematic structural diagram of a cover body in the test fixture provided by the embodiment of the present application.

[0027] Figure 6 Shown is a schematic structural diagram of a base in the test fixture provided by the embodiment of the present application.

[0028] Figure 7A structural schematic diagram of the base provided by an embodiment of the present application.

[0029] Figure 8 A structural schematic diagram of the four-stage 1U circuit breaker provided by an embodiment of the present application is shown.

[0030] Figure 9 A structural schematic diagram of a busbar provided by an embodiment of the present application is shown.

[0031] Figure 10 A structural schematic diagram of the base in the test fixture provided by an embodiment of the present application is shown.

[0032] Wherein the reference numerals are: A, 1U circuit breaker; A1, socket end; A2, operating end; A11, load signal input port; A12, power signal input port; A21, operating handle; B, mounting plate; C, test fixture; C1, base; C11, positioning post; C12, positioning groove; C13, socket; C14, limiting groove; C15, fixing hole; C2, cover body; C21, positioning hole; C3, busbar; C31, conducting part; C311, wiring port; C32, connecting part; C321, connecting hole; Q, accommodating cavity. Detailed implementation manners

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the description of the present application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application. The terms "including" and "having" and any variations thereof in the description and claims of this application and the accompanying drawings are intended to cover non-exclusive inclusion.

[0035] Referring to "embodiment" herein means that a specific feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The phrase "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0036] In addition, the terms "first", "second", etc. in the description and claims of this application or in the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order, and may explicitly or implicitly include one or more of such features.

[0037] In the description of this application, unless otherwise specified, the meaning of "a plurality" refers to two or more (including two). Similarly, "a plurality of groups" refers to two or more groups (including two groups).

[0038] In the description of this application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, the "connection" or "coupling" of a mechanical structure may refer to a physical connection. For example, a physical connection may be a fixed connection, such as a fixed connection through a spacer, such as a fixed connection through screws, bolts, or other spacers. A physical connection may also be a detachable connection, such as a snap connection or a snap-fit connection. A physical connection may also be an integral connection, such as a connection formed by welding, bonding, or integrally molding. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] The following provides a detailed description of this application with reference to the drawings.

[0040] Figure 1 For a schematic structural diagram of a 1U circuit breaker, please refer to Figure 1 , the 1U circuit breaker A includes a socket end A1 and an operating end A2. The socket end A1 is provided with a load signal input port A11 and a power signal input port A12. The operating end A2 is provided with an operating handle A21.

[0041] Figure 2 The following shows a schematic structural diagram of the test fixture for the 1U circuit breaker provided by the embodiment of this application. Figure 3 For Figure 2 is an exploded view. Please refer to Figure 2 and Figure 3 , the test fixture C for the 1U circuit breaker provided by this application includes a base C1, a cover C2, and a busbar C3. The base C1 is provided with a socket C13. The cover C2 is a ring structure, and the number of covers C2 is at least two, and different covers C2 have different lengths. Any cover C2 can be detachably connected to the base C1 to form a receiving cavity with an opening. The depth of the receiving cavity is adapted to the length of the 1U circuit breaker A to be tested, and the opening is opposite to the base C1. The busbar C3 is inserted into the receiving cavity through the socket C13 for providing an electrical signal to the 1U circuit breaker A to be tested.

[0042] Figure 4 The following shows a block diagram of the installation structure during the type test of the 1U circuit breaker. Please refer to Figure 2 andFigure 4 When the 1U circuit breaker A is undergoing type tests, the test fixture C is fixed to one side of the mounting plate B through fasteners. The mounting plate B has a mounting opening that communicates with the receiving cavity of the test fixture C. The mounting plate B is a fixed plate that serves to fixedly support the test fixture C.

[0043] Please continue to refer to Figure 2 and Figure 4 During testing, the 1U circuit breaker A to be tested is inserted into the receiving cavity through the mounting opening. The operating handle A21 of the 1U circuit breaker A to be tested extends outside the mounting plate B. The socket end A1 of the 1U circuit breaker A to be tested is close to the base C1 of the test fixture C, and the socket end A1 of the 1U circuit breaker A is plugged into the corresponding busbar C3. In this way, the installation of the 1U circuit breaker A by the test fixture C in the type test is completed.

[0044] It can be understood that in different applications, the 1U circuit breaker A can have different lengths. For example, the ordinary 1U circuit breaker A and the intelligent 1U circuit breaker A have significant differences in actual length due to differences in functions.

[0045] To accommodate 1U circuit breakers A of different lengths, in the test fixture C of the 1U circuit breaker of the present application, the number of the cover bodies C2 is multiple, and different cover bodies C2 have different lengths. Any cover body C2 can be detachably connected to the base C1 to form a receiving cavity with an opening. In this way, during the type test, different lengths of cover bodies C2 can be selected to be assembled with the base C1 according to the length of the 1U circuit breaker A to be tested, thereby forming receiving cavities of different depths to facilitate the installation of the 1U circuit breaker A to be tested.

[0046] In addition, due to the particularity of the application scenario of the 1U circuit breaker A, in some cases, it needs to be installed in a 1U communication cabinet for electrical power distribution and protection. The cover body C2 in the present application adopts an annular structure, and the base C1 and the cover body C2 are combined to form a receiving cavity with an opening, thereby simulating the real application environment of the 1U circuit breaker A and improving the accuracy of the test results.

[0047] Based on the above description, the test fixture C of the 1U circuit breaker provided by the present application simulates the application environment of the 1U circuit breaker A, and the test results are more accurate. In addition, the 1U circuit breaker A of the present application includes multiple cover bodies C2 of different lengths that are adapted to the base C1, so that it can be applicable to the installation of 1U circuit breakers A of multiple lengths. In addition, the present application can assemble the same base C1 with different cover bodies C2 for testing circuit breakers of different lengths, achieving the effect of cost savings.

[0048] It should also be noted that the cover body C2 and the base C1 can be detachably connected by means of threaded fasteners, or other detachable connection methods can also be used. In this regard, the present application does not make any restrictions.

[0049] Please continue to refer to Figure 2 and Figure 4 , in some embodiments of the present application, the depth of the accommodation cavity is 70-80% of the length of the 1U circuit breaker A to be tested.

[0050] Specifically, the type test of the 1U circuit breaker A includes an operating life test. When conducting the operating life test, it is necessary to simulate multiple opening and closing operations of the 1U circuit breaker A to verify the durability of its operating mechanism.

[0051] Please continue to refer to Figure 2 and Figure 4 , based on the requirements of the type test, when the 1U circuit breaker A to be tested is installed, one end of the operating handle A21 needs to be exposed outside the accommodation cavity to facilitate external force to manipulate the operating handle A21.

[0052] Please continue to refer to Figure 2 and Figure 4 , in the present application, an important function of the cover C2 is to surround the 1U circuit breaker A to be tested to simulate the real environment in which the 1U circuit breaker A is installed in the electric cabinet. In addition, the cover C2 also has the function of fixedly supporting the 1U circuit breaker A to be tested. Specifically, as described above, the test fixture C is fixed to one side of the mounting plate B through fasteners. Since the mounting plate B is fixed, the test fixture C fixedly connected to the mounting plate B is also fixed.

[0053] Please continue to refer to Figure 2 and Figure 4 , when conducting an operating life test on the 1U circuit breaker A to be tested, it is necessary to repeatedly pull the operating handle A21 of the 1U circuit breaker A to be tested. If the part of the 1U circuit breaker A exposed outside the accommodation cavity is too long, when repeatedly pulling the operating handle A21 of the 1U circuit breaker A to be tested, the whole 1U circuit breaker A will shake, which is not conducive to the progress of the operating life test. If the part of the 1U circuit breaker A exposed outside the accommodation cavity is too short, it is not convenient for external force to manipulate the 1U circuit breaker A to be tested.

[0054] The depth of the accommodation cavity in the present application is 70-80% of the length of the 1U circuit breaker A to be tested. In this way, it can not only meet the manipulation of the 1U circuit breaker A by external force, but also because the 1U circuit breaker A has sufficient installation depth, the test fixture C can better support and fix the 1U circuit breaker A to be tested. Therefore, the test fixture C in the present application can also reduce the shaking of the 1U circuit breaker A during the test, which is conducive to the smooth progress of the operating life test.

[0055] Figure 5 The figure shows a schematic structural diagram of the cover in the test fixture provided by the embodiment of the present application. Figure 6 The figure shows a schematic structural diagram of the base in the test fixture provided by the embodiment of the present application.

[0056] Please refer to Figure 3 , Figure 4 , Figure 5 and Figure 6 , in some embodiments of the present application, a positioning structure is provided between the cover C2 and the base C1. The positioning structure includes a positioning hole C21 and a positioning post C11 that are inserted into each other. One of the positioning hole C21 and the positioning post C11 is provided on the cover C2, and the other is provided on the base C1.

[0057] Specifically, the base C1 and the cover C2 of the present application are detachably connected. Before the detachable connection, alignment can be performed through the positioning structure between the base C1 and the cover C2, so that the base C1 and the cover C2 can be fitted at the correct positions. After that, the cover C2 and the base C1 can be connected by fasteners such as screws.

[0058] Based on the test fixture C of the 1U circuit breaker of the present application, by providing a positioning structure between the cover C2 and the base C1, it is not only convenient for fixing between the cover C2 and the base C1, but also helps to improve the installation accuracy of the cover C2 and the base C1.

[0059] As Figure 5 and Figure 6 shown, in an embodiment of the present application, the positioning hole C21 is provided at one end of the cover C2 facing the base C1. The positioning post C11 is provided at one end of the base C1 facing the cover C2.

[0060] In some other embodiments of the present application, the positioning hole C21 can also be provided at one end of the base C1 facing the cover C2. The positioning post C11 is provided at one end of the cover C2 facing the base C1.

[0061] Please continue to refer to Figure 6 , a positioning groove C12 is further provided on the side of the base C1 facing the cover C2. The positioning groove C12 is used to limit the 1U circuit breaker A to be tested.

[0062] Please refer to Figure 2 , Figure 4 and Figure 6 , in some embodiments of the present application, a positioning groove C12 is further provided on the side of the base C1 facing the cover C2. In this way, when the 1U circuit breaker A to be tested is installed, the operating end A2 of the 1U circuit breaker A to be tested is positioned by the installation opening of the mounting plate B, and the socket end A1 of the 1U circuit breaker A to be tested is supported and positioned by the positioning groove C12, which helps to improve the installation accuracy of the 1U circuit breaker A to be tested. In addition, during the life test, when the operating life test of the 1U circuit breaker A to be tested is performed, due to the existence of the limiting effect of the positioning groove C12, the 1U circuit breaker A to be tested is not likely to shake.

[0063] Please continue to refer to Figure 6 , in some embodiments of the present application, the base C1 is further provided with an arc ejection port, and the arc ejection port is integrally provided with the socket C13.

[0064] Specifically, when performing a type test on the to-be-tested 1U circuit breaker A, an arc will be generated inside the to-be-tested 1U circuit breaker A. The arc ejection port provided on the base C1 of the present application facilitates the ejection of the arc. Integrally providing the arc ejection port with the socket C13 can save processes and facilitate the machining of the base C1.

[0065] Please continue to refer to Figure 1 With Figure 6 , in some embodiments of the present application, for each stage of the 1U circuit breaker A, two sockets C13 are provided on the base C1. One socket C13 is used to insert the busbar C3 for transmitting power signals and also serves as an arc ejection port. The other socket C13 is used to insert the busbar C3 for transmitting load signals and also serves as an arc ejection port.

[0066] Please refer to Figure 2 , Figure 4 , Figure 5 and Figure 6 , in some embodiments of the present application, the accommodation cavity can accommodate multiple stages of 1U circuit breakers A. Corresponding to the multiple stages of 1U circuit breakers A, multiple groups of sockets C13 are provided on the base C1.

[0067] Specifically, in some cases, multiple stages of 1U circuit breakers A can be used together. For example, in a communication cabinet, four stages of 1U circuit breakers A can be used simultaneously. In the present application, the accommodation cavity can accommodate multiple stages of 1U circuit breakers A, and multiple groups of sockets C13 corresponding to the multiple stages of 1U circuit breakers A are provided on the base C1. In this way, during a type test, multiple stages of 1U circuit breakers A can be tested simultaneously, improving the test efficiency. And installing multiple stages of 1U circuit breakers A in the same accommodation cavity is also closer to the application environment of the 1U circuit breaker A. In this way, the test accuracy can also be improved.

[0068] Figure 7 is a schematic structural diagram of the base provided by the embodiment of the present application, Figure 8 shown is the schematic structural diagram of the four-stage 1U circuit breaker provided by the embodiment of the present application. Please refer to Figure 2 , Figure 7 and Figure 8, in some embodiments of the present application, the accommodation cavity can accommodate a four - stage 1U circuit breaker A. Four groups of sockets C13 corresponding to the multi - stage 1U circuit breaker A are correspondingly arranged on the base C1. Each stage of the 1U circuit breaker A corresponds to a group of sockets C13, and each group of sockets C13 has two. One of the sockets C13 is used to insert the busbar C3 for transmitting power signals and also serves as an arc - spraying port. The other socket C13 is used to insert the busbar C3 for transmitting load signals and also serves as an arc - spraying port.

[0069] In addition, it should be noted that the test fixture C that can accommodate a multi - stage 1U circuit breaker can also test a single - stage 1U circuit breaker A. For example, the test fixture C that can accommodate a four - stage 1U circuit breaker can also test single - stage, two - stage, and three - stage 1U circuit breakers A. Specifically, when the test fixture C that can accommodate a four - stage 1U circuit breaker tests a single - stage 1U circuit breaker A, the housing of the 1U circuit breaker can be installed in the accommodation cavity to fill the installation space of the remaining three - stage 1U circuit breakers A, so as to position the single - stage 1U circuit breaker A to be tested, avoid the single - stage 1U circuit breaker A from shaking in the accommodation cavity, and improve the test accuracy.

[0070] Please refer to Figure 2 , in some embodiments of the present application, the busbar C3 is detachably connected to the base C1. The busbar C3 is a consumable item, and the detachable connection between the busbar C3 and the base C1 facilitates the replacement of the busbar C3.

[0071] Figure 9 The following is a schematic structural diagram of the busbar provided by the embodiment of the present application. Please refer to Figure 2 、 Figure 3 、 Figure 7 and Figure 9 , in some embodiments of the application, the busbar C3 includes a conductive part C31 and a connecting part C32. The conductive part C31 includes an opposite first end and second end. The first end is used to be inserted into the accommodation cavity through the socket C13 and is plugged into the socket end A1 of the 1U circuit breaker A. The second end is provided with a wiring port C311 for connecting a load or a power source. The connecting part C32 is connected to one side of the conductive part C31 and is located between the first end and the second end. The connecting part C32 is provided with a connecting hole C321, and the busbar C3 is detachably connected to the base C1 through the connecting hole C321.

[0072] Based on the test fixture C of the 1U circuit breaker of the present application, the busbar C3 includes a conductive part C31 and a connecting part C32. The connecting part C32 is connected to one side of the conductive part C31 and is located between the first end and the second end. The connecting part C32 is also provided with a connecting hole C321, and the busbar C3 is detachably connected to the base C1 through the connecting hole C321. In this way, the overall structure of the busbar C3 is relatively simple, and it is convenient for the installation of the busbar C3.

[0073] Please combine with Figure 3 and Figure 9 , in some embodiments of the present application, the structure of the busbar C3 is in a T shape. The horizontal part of the T shape is the conductive part C31, and the vertical part of the T shape is the connecting part C32. In this way, when the busbar C3 is inserted into the socket C13, the insertion depth of the busbar C3 can be determined through the vertical part, and at the same time, the busbar C3 can be detachably connected to the base C1 through the vertical part. Therefore, the busbar provided by the present application has the effects of simple structure and convenient installation.

[0074] It should also be noted that Figure 9 the shown busbar C3 is only one embodiment of the busbar C3 in the present application. In actual applications, the connecting part C32 of the busbar C3 may not be perpendicular to the conductive part C31. For example, it may be an obtuse angle.

[0075] Figure 10 The following shows a schematic structural diagram of the base in the test fixture provided by the embodiment of the present application. Please combine with Figure 3 , Figure 9 and Figure 10 , in some embodiments of the present application, a limiting groove C14 is further provided on the side of the base C1 away from the cover C2. The limiting groove C14 is used to limit the connecting part C32. A fixing hole C15 is further provided at the bottom of the limiting groove C14. The fixing hole C15 is adapted to the connecting hole C321 for fixing the busbar C3.

[0076] Specifically, a limiting groove C14 is further provided on the side of the base C1 away from the cover C2. The limiting groove C14 has an obvious guiding effect on the installation position of the busbar C3. In this way, when installing the busbar C3, the installation position of the busbar C3 can be quickly determined, and the connecting hole C321 on the busbar C3 can be accurately aligned with the fixing hole C15 on the base C1, realizing the quick installation of the busbar C3 and the base C1. In addition, through the positioning of the limiting groove C14, the installation accuracy of the busbar C3 can be improved.

[0077] Those skilled in the art can understand that although some embodiments herein include certain features included in other embodiments rather than other features, the combination of the features of different embodiments means that it is within the scope of the present application and forms different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

[0078] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A test fixture for a 1U circuit breaker, characterized in that Comprising: A base provided with a socket. A cover body which is of an annular structure, and the number of the cover bodies is at least two, and different cover bodies have different lengths; any one of the cover bodies can be detachably connected to the base to form a receiving cavity with an opening; the depth of the receiving cavity is adapted to the length of the 1U circuit breaker to be measured, and the opening faces the base. A busbar which is inserted into the receiving cavity through the socket for providing an electrical signal to the 1U circuit breaker to be measured.

2. The test fixture for the 1U circuit breaker according to claim 1, characterized in that, The depth of the receiving cavity is 70-80% of the length of the 1U circuit breaker to be measured.

3. The test fixture for the 1U circuit breaker according to claim 1, characterized in that, A positioning structure is provided between the cover body and the base. The positioning structure includes a positioning hole and a positioning post which are inserted into each other; one of the positioning hole and the positioning post is provided on the cover body, and the other of the positioning hole and the positioning post is provided on the base.

4. The test fixture for the 1U circuit breaker according to claim 1, characterized in that, A positioning groove is further provided on the side of the base facing the cover body, and the positioning groove is used for limiting the 1U circuit breaker to be measured.

5. The test fixture for the 1U circuit breaker according to claim 1, characterized in that, The base is further provided with an arc ejection port which is integrally provided with the socket.

6. The test fixture for the 1U circuit breaker according to any one of claims 1 to 5, characterized in that, The receiving cavity can accommodate a multi-stage 1U circuit breaker; correspondingly, a plurality of groups of the sockets corresponding to the multi-stage 1U circuit breaker are provided on the base.

7. The test fixture for the 1U circuit breaker according to claim 1, characterized in that, The busbar is detachably connected to the base.

8. The test fixture for the 1U circuit breaker according to claim 1, wherein The busbar includes a conductive part and a connecting part. The conductive part includes an opposite first end and a second end. The first end is used for being inserted into the receiving cavity through the socket and being plugged with the socket end of the 1U circuit breaker to be measured; the second end is provided with a wiring port for connecting a load or a power supply. The connecting part is connected to one side of the conductive part and is located between the first end and the second end. The connecting part is provided with a connecting hole, and the busbar is detachably connected to the base through the connecting hole.

9. The test fixture for the 1U circuit breaker according to claim 8, characterized in that, A limiting groove is further provided on the side of the base away from the cover body, and the limiting groove is used for limiting the connecting part; a fixing hole is further provided at the bottom of the limiting groove, and the fixing hole is adapted to the connecting hole for fixing the busbar.

Images