Network fault detection device

Abstract

This application provides a network fault detection device, including a first tester, a second tester, and a connection structure. The connection structure includes: a first limiting unit having a first limiting state and a first limiting release state; in the first limiting state, the first limiting unit is configured to lock the relative positions of the first tester and the second tester in mutually perpendicular first and second directions; in the first limiting release state, the first limiting unit is configured to release the locking of the relative positions of the first tester and the second tester; and a second limiting unit having a second limiting state and a second limiting release state; in the second limiting state, the second limiting unit locks the relative positions of the first tester and the second tester in a third direction perpendicular to the first and second directions; in the second limiting release state, the second limiting unit releases the locking of the relative positions of the first tester and the second tester.

Description

Technical Field

[0001] This application relates to the field of network fault detection technology, and in particular to a network fault detection device. Background Technology

[0002] Network fault detection equipment typically consists of a main unit and a secondary unit. Both the main unit and the secondary unit are equipped with test ports for connecting network signal cables to test the network signal cables.

[0003] Existing network fault testing equipment uses a sliding connection between the main and secondary units. Over time, the friction between the slider and the groove decreases, potentially causing the main and secondary units to separate during subsequent network signal testing. Furthermore, the test ports on the main and secondary units typically lack dust protection, and dust accumulation inside these ports can affect the accuracy of the test results.

[0004] The above statements are for the purpose of providing background information in relation to this application only, and do not necessarily constitute prior art. Utility Model Content

[0005] The purpose of this application is to provide a network fault detection device that aims to solve the problem of separation between the main unit and the secondary unit that may occur during network signal testing using the network fault detection device.

[0006] This application provides a network fault detection device, including:

[0007] First test machine;

[0008] Second test machine; and

[0009] The connection structure allows the first test machine and the second test machine to be detachably connected.

[0010] The connection structure includes:

[0011] A first limiting unit has a first limiting state and a first limiting release state. In the first limiting state, the first limiting unit is configured to lock the relative positions of the first testing machine and the second testing machine in mutually perpendicular first and second directions. In the first limiting release state, the first limiting unit is configured to release the locking of the relative positions of the first testing machine and the second testing machine.

[0012] The second limiting unit has a second limiting state and a second limiting release state. In the second limiting state, the second limiting unit is configured to lock the relative positions of the first testing machine and the second testing machine in a third direction when the first limiting unit is in the first limiting state. The third direction is perpendicular to the first direction and the second direction. In the second limiting release state, the second limiting unit is configured to release the locking of the relative positions of the first testing machine and the second testing machine.

[0013] In some embodiments of the network fault detection device, the first limiting unit includes:

[0014] A slot is provided on one of the first test machine and the second test machine; and

[0015] An insert, disposed on the other of the first test machine and the second test machine, is configured in the first limiting state to slidably engage with the slot along the third direction and limit the relative positions of the first test machine and the second test machine along the first and second directions. In the first limiting release state, the insert is configured to disengage from the slot to release the locking of the relative positions of the first test machine and the second test machine along the first and second directions.

[0016] In some embodiments of the network fault detection device, the second limiting unit includes:

[0017] The first connecting seat is fixedly mounted on the first testing machine;

[0018] The second connector is fixedly mounted on the second testing machine; and

[0019] The limiting member, in the second limiting state, is configured to simultaneously cooperate with the first connecting seat and the second connecting seat to lock the relative positions of the first connecting seat and the second connecting seat at least in the third direction; in the second limiting release state, the limiting member is configured to disengage from at least one of the first connecting seat and the second connecting seat to release the locking of the relative positions of the first connecting seat and the second connecting seat.

[0020] In some embodiments of the network fault detection device, the limiting member is movably disposed on the first connecting seat or the second connecting seat along the first direction so that the second limiting unit switches between the second limiting state and the second limiting release state.

[0021] In some embodiments of the network fault detection device,

[0022] The first connecting seat is disposed on the edge of the first testing machine and extends along the first direction;

[0023] The second connecting seat is disposed on the edge of the second testing machine and extends along the first direction. In the second limiting state, the ends of the first connecting seat and the second connecting seat that are close to each other are opposite each other.

[0024] In some embodiments of the network fault detection device,

[0025] The first connector includes a first insertion hole extending along the first direction, and the end of the first insertion hole near the second connector has a first opening;

[0026] The second connector includes a second insertion hole extending along the first direction, and the end of the second insertion hole near the first connector is provided with a second opening opposite to the first opening;

[0027] The limiting member includes a plug rod. In the second limiting state, the plug rod engages with the first socket and the second socket. In the second limiting release state, the plug rod disengages from at least one of the first socket and the second socket.

[0028] In some embodiments of the network fault detection device,

[0029] The first orifice is a flared opening with a gradually increasing cross-sectional area toward the second orifice; and / or

[0030] The second opening is a funnel-shaped opening with a cross-sectional area that gradually increases towards the first opening.

[0031] In some embodiments of the network fault detection device, the limiting member includes an operating part protruding from the side wall of the plug, and the first connecting seat and / or the second connecting seat includes a sliding groove extending along the first direction and communicating with the first plug hole and / or the second plug hole, wherein the operating part is disposed in the sliding groove and has a movable state that slidably engages with the sliding groove along the first direction.

[0032] In some embodiments of the network fault detection device, the first connector and / or the second connector includes a limiting groove communicating with the slide, and the operating part also has a positioning state engaged with the limiting groove.

[0033] In some embodiments of the network fault detection device, a first elastic element is provided between the plug and the closed end of the first socket or between the plug and the closed end of the second socket.

[0034] In some embodiments of the network fault detection device,

[0035] The first test machine and the second test machine each include at least one test interface;

[0036] The network fault detection device also includes a dust cover, which is installed on the first test machine or the second test machine and is configured to cover or expose the test interface.

[0037] In some embodiments of the network fault detection device, the dust cover includes:

[0038] Mounting bracket, which is installed on the first test machine or the second test machine;

[0039] A rotating shaft is rotatably mounted on the mounting base; and

[0040] A cover plate is rotatably connected to the pivot about the axis of rotation to cover or expose the test interface.

[0041] In some embodiments of the network fault detection device,

[0042] The second limiting unit includes a first connecting seat, which is fixedly mounted on the first testing machine, and at least a portion of the mounting seat is disposed on the first connecting seat; and / or

[0043] The second limiting unit includes a second connecting seat, which is fixedly mounted on the second testing machine, and the mounting seat is mounted on the second connecting seat.

[0044] In some embodiments of the network fault detection device, the dust cover further includes a second elastic element configured to apply a force to the cover plate that tends to cover the test interface.

[0045] In some embodiments of the network fault detection device, the second elastic element includes a torsion spring sleeved outside the rotating shaft, the first end of the torsion spring acting on the first test machine or the second test machine, and the second end of the torsion spring acting on the cover plate.

[0046] The network fault detection device provided in this application provides relative limits for the first tester and the second tester in three directions—the first direction, the second direction, and the third direction—by setting a first limit unit and a second limit unit, so that the first tester and the second tester of the network fault detection device will not accidentally separate.

[0047] Other features and advantages of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0048] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0049] Figure 1 This is a schematic diagram of the structure of a network fault detection device according to some embodiments of this application;

[0050] Figure 2 for Figure 1 A schematic diagram of the internal structure of the first and second connecting seats in the illustrated embodiment;

[0051] Figure 3 This is a schematic diagram of the structure of a network fault detection device according to another embodiment of this application;

[0052] Figure 4 for Figure 3 A schematic diagram of the network fault detection device from another perspective;

[0053] Figure 5 for Figure 3 Enlarged structural diagram of section A in the middle. Detailed Implementation

[0054] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0055] It should be understood that, for ease of description, the dimensions of the various parts shown in the accompanying drawings are not drawn to actual scale. Techniques, methods, and apparatus known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0056] In the description of this application, it should be understood that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application.

[0057] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0058] In the description of this application, the first direction X corresponds to the length direction of the network fault detection device and its first test machine 1 and second test machine 2; the second direction Y is perpendicular to the first direction X and also corresponds to the width direction of the network fault detection device and its first test machine 1 and second test machine 2; the third direction Z is perpendicular to the first direction X and the second direction Y, and the third direction Z corresponds to the height direction of the network fault detection device and its first test machine 1 and second test machine 2.

[0059] like Figures 1 to 5 As shown, this application provides a network fault detection device. The network fault detection device includes: a first tester 1, a second tester 2, and a connection structure. The first tester 1 and the second tester 2 are detachably connected via the connection structure. The connection structure includes a first limiting unit and a second limiting unit. The first limiting unit has a first limiting state and a first limiting release state. In the first limiting state, the first limiting unit is configured to lock the relative positions of the first tester 1 and the second tester 2 in a mutually perpendicular first direction X and a second direction Y. In the first limiting release state, the first limiting unit is configured to release the locking of the relative positions of the first tester 1 and the second tester 2. The second limiting unit has a second limiting state and a second limiting release state. In the second limiting state, the second limiting unit is configured to lock the relative positions of the first tester 1 and the second tester 2 in a third direction Z when the first limiting unit is in the first limiting state. In the second limiting release state, the second limiting unit is configured to release the locking of the relative positions of the first tester 1 and the second tester 2.

[0060] According to the network fault detection device of this application embodiment, by setting a first limiting unit and a second limiting unit, relative limiting is provided for the first test machine 1 and the second test machine 2 in three directions: the first direction X, the second direction Y and the third direction Z, so that the first test machine 1 and the second test machine 2 of the network fault detection device will not be accidentally separated.

[0061] In some embodiments, such as Figure 1 and Figure 3As shown, the first limiting unit includes a slot 3 and a insert 4. The slot 3 is disposed on one of the first test machine 1 and the second test machine 2. The insert 4 is disposed on the other of the first test machine 1 and the second test machine 2. In the first limiting state, the insert 4 is configured to slidably engage with the slot 3 along a third direction Z and limit the relative positions of the first test machine 1 and the second test machine 2 along a first direction X and a second direction Y. In the first limiting release state, the insert 4 is configured to disengage from the slot 3 to release the locking of the relative positions of the first test machine 1 and the second test machine 2 along the first direction X and the second direction Y.

[0062] The sidewalls of the slot limit the range of motion of the insert, ensuring that the first tester 1 and the second tester 2 move only in the third direction Z when in the limited position. The engagement of the slot and the insert does not require complex fastening and is easy to disassemble.

[0063] In some embodiments, such as Figure 1 and Figure 3 As shown, the second limiting unit includes a first connecting seat 5, a second connecting seat 6, and a limiting member 7. The first connecting seat 5 is fixedly mounted on the first testing machine 1. The second connecting seat 6 is fixedly mounted on the second testing machine 2. In the second limiting state, the limiting member 7 is configured to simultaneously cooperate with the first connecting seat 5 and the second connecting seat 6 to lock the relative positions of the first connecting seat 5 and the second connecting seat 6 at least in the third direction Z. In the second limiting release state, the limiting member 7 is configured to disengage from at least one of the first connecting seat 5 and the second connecting seat 6 to release the locking of the relative positions of the first connecting seat 5 and the second connecting seat 6.

[0064] The limiting state of the second limiting unit is configured by manipulating the limiting component 7, which is simple and reliable.

[0065] In some embodiments, such as Figure 2 As shown, the limiting member 7 is movably disposed on the first connecting seat 5 or the second connecting seat 6 along the first direction X so that the second limiting unit switches between the second limiting state and the second limiting release state.

[0066] The limiting member 7 moves in the first direction X to adjust its position to achieve the second limiting state or the second limiting release state. This facilitates the realization of the movement relationship between the limiting member 7 and the first connecting seat 5 or the second connecting seat 6 through a simple structure and simple operation, which simplifies the structure and operation of the second limiting unit.

[0067] In some embodiments, such as Figure 2 and Figure 4As shown, the first connecting seat 5 is disposed on the edge of the first testing machine 1 and extends along the first direction X. The second connecting seat 6 is disposed on the edge of the second testing machine 2 and extends along the first direction X. In the second limiting state, the ends of the first connecting seat 5 and the second connecting seat 6 that are close to each other are facing each other.

[0068] The first connecting seat 5 and the second connecting seat 6 are respectively positioned on the edges of the first testing machine 1 and the second testing machine 2. This reduces interference with the main structure of the first testing machine 1 and the second testing machine 2, as well as the components connected to them, when setting up and operating the second limiting unit. This helps prevent the normal operation of the network fault detection equipment from being affected by the setting of the second limiting unit, and also facilitates the operator's viewing and adjustment of the position of the limiting component 7. In the second limiting state, the relatively close ends of the first connecting seat 5 and the second connecting seat 6 facilitate rapid switching of the state of the second limiting unit.

[0069] In some embodiments, such as Figure 3 As shown, the first connecting seat 5 includes a first insertion hole 501 extending along a first direction X, and the end of the first insertion hole 501 near the second connecting seat 6 has a first opening 502. The second connecting seat 6 includes a second insertion hole 601 extending along the first direction X, and the end of the second insertion hole 601 near the first connecting seat 5 has a second opening 602 opposite to the first opening 502. The limiting member 7 includes a plug rod 701. In a second limiting state, the plug rod 701 engages with the first insertion hole 501 and the second insertion hole 601. In a second limiting release state, the plug rod 701 disengages from at least one of the first insertion hole 501 and the second insertion hole 601.

[0070] The insertion rod 701 cooperates with the insertion hole, making the structure of the second limit unit simple and compact, without significantly increasing the size of the network fault detection device. The state switching operation is simple and the state is stable after the state switch.

[0071] In some embodiments, such as Figure 2 As shown, the first opening 502 is a flared opening with a gradually increasing cross-sectional area toward the second opening 602; and / or the second opening 602 is a flared opening with a gradually increasing cross-sectional area toward the first opening 502.

[0072] The first opening 502 and / or the second opening 602 are flared openings to facilitate the insertion and removal of the insertion rod 701, reduce jamming or collision caused by slight deviation of the insertion rod 701, and reduce local wear.

[0073] In some embodiments, such as Figure 2As shown, the limiting member 7 includes an operating portion 702 protruding from the side wall of the insertion rod 701, and the first connecting seat 5 and / or the second connecting seat 6 includes a groove 8 extending along the first direction X and communicating with the first insertion hole 501 and / or the second insertion hole 601. The operating portion 702 is disposed in the groove 8 and has a movable state that slidably engages with the groove 8 along the first direction X.

[0074] The operator can push the operating unit 702 to adjust the position of the insertion rod 701, reducing the difficulty for the operator to directly manipulate the insertion rod 701.

[0075] In some embodiments, such as Figure 2 As shown, the first connecting seat 5 and / or the second connecting seat 6 include a limiting groove 9 communicating with the slide groove 8, and the operating part 702 also has a positioning state that engages with the limiting groove 9.

[0076] The operating unit 702 achieves mechanical locking by engaging with the limiting groove 9, ensuring that the component remains in the preset position and preventing accidental displacement due to vibration or external force.

[0077] In some embodiments, such as Figure 2 As shown, a first elastic element 10 is provided between the plug 701 and the closed end of the first socket 501 or between the plug 701 and the closed end of the second socket 601.

[0078] When the operating unit 702 is engaged in the limiting groove 9, it compresses the first elastic element 10. The first elastic element 10 is released while under compression, which allows the insertion rod 701 to be easily pushed to the bottom of the first insertion hole 501 or the second insertion hole 601, and makes it easy to hold the insertion rod 701 in the corresponding position, reducing the difficulty of adjusting the operating unit 702.

[0079] In some embodiments, such as Figure 1 , Figure 3 and Figure 4 As shown, the first test machine 1 and the second test machine 2 include at least one test interface 101. The network fault detection device also includes a dust cover 11, which is installed on the first test machine 1 or the second test machine 2 and is configured to cover or expose the test interface 101.

[0080] The dust cover 11 can reduce the entry of contaminants such as dust, liquid, and metal shavings into the test interface 101, thereby reducing the impact of contaminants on the test results and extending the life of the network fault detection equipment.

[0081] In some embodiments, such as Figure 1 , Figure 3 and Figure 4As shown, the dust cover 11 includes a mounting base 111, a rotating shaft 112, and a cover plate 113. The mounting base 111 is mounted on a first testing machine 1 or a second testing machine 2. The rotating shaft 112 is rotatably mounted on the mounting base 111. The cover plate 113 is rotatably connected to the rotating shaft 112 about its axis to cover or expose the test interface 101.

[0082] The pivot 112 allows the cover 113 to be easily rotated open or closed without disassembly or additional tools, improving testing efficiency. If the cover 113 or the pivot 112 is damaged, it can be replaced individually without overall disassembly, reducing maintenance difficulty.

[0083] In some embodiments, such as Figure 4 and Figure 5 As shown, the second limiting unit includes a first connecting seat 5, which is fixedly mounted on the first testing machine 1, and a mounting seat 111 is mounted on the first connecting seat 5; and / or the second limiting unit includes a second connecting seat 6, which is fixedly mounted on the second testing machine 2, and at least part of the mounting seat 111 is mounted on the second connecting seat 6.

[0084] The mounting base 111, when placed on the first connector 5 and / or the second connector 6, can improve the integration of the network fault detection device and reduce the impact of setting the mounting base 111 on the first test machine 1 or the second test machine 2.

[0085] In some embodiments, such as Figure 5 As shown, the dust cover 11 also includes a second elastic element 114, which is configured to apply a force to the cover plate 113 that tends to cover the test interface 101.

[0086] The second elastic element 114 applies an automatic closing force to the cover plate 113, improving the sealing and reliability of the dust cover and preventing dust and liquid from entering due to forgetting to close it.

[0087] In some embodiments, such as Figure 5 As shown, the second elastic element 114 includes a torsion spring sleeved outside the rotating shaft 112. The first end of the torsion spring acts on the first testing machine 1 or the second testing machine 2, and the second end of the torsion spring acts on the cover plate 113.

[0088] The rotational force of the torsion spring acts directly on the rotating shaft 112, which helps the cover plate 113 maintain its position after closing, ensuring that the test interface 101 is always covered. The torsion spring is directly sleeved on the rotating shaft 112, requiring no additional installation space and improving the integration of the dust cover 11.

[0089] The following is combined Figures 1 to 5 The structure of the network fault detection device according to some embodiments of this application will be described in more detail.

[0090] like Figure 1 and Figure 5 In the illustrated embodiment, the network fault detection device includes a first test machine 1, a second test machine 2, and a connection structure. In this embodiment, the first test machine 1 is the host, and the second test machine 2 is the slave. Both the first test machine 1 and the second test machine 2 are provided with a test interface 101. The test interface 101 is disposed on the surface formed by the first test machine 1 and the second test machine 2 along a first direction X and a third direction Z. Figures 3 to 5 In the embodiment shown, the network fault detection device also includes a dust cover 11 that can be used to cover or open the test interface 101.

[0091] The connection structure of the network fault detection device includes a first limiting unit and a second limiting unit.

[0092] The first limiting unit includes a slot 3 disposed on the first testing machine 1 and an insert 4 disposed on the second testing machine 2. In this embodiment, the cross-sectional shape of the slot 3 and the insert 4 perpendicular to the third direction Z is trapezoidal. The opening of the slot 3 is smaller than its bottom wall. Therefore, after the slot 3 and the insert 4 are inserted and engaged, the relative positions of the first testing machine 1 and the second testing machine 2 can be limited simultaneously.

[0093] The second limiting unit includes a first connecting seat 5, a second connecting seat 6, a limiting member 7, and a first elastic element 10. The first connecting seat 5 is disposed on the edge of the first testing machine 1 and extends along the first direction X, and the second connecting seat 6 is disposed on the edge of the second testing machine 2 and extends along the first direction X. When the slot 3 and the insert 4 are engaged, the ends of the first connecting seat 5 and the second connecting seat 6 are opposite each other along the first direction X.

[0094] like Figure 2 As shown, the first connecting seat 5 includes a first insertion hole 501 extending along the first direction X, and the end of the first insertion hole 501 near the second connecting seat 6 has a first opening 502. The second connecting seat 6 includes a second insertion hole 601 extending along the first direction X, and the end of the second insertion hole 601 near the first connecting seat 5 has a second opening 602 opposite to the first opening 502. The second opening 602 is a flared opening with a gradually increasing cross-sectional area towards the first opening 502. The limiting member 7 includes a insertion rod 701 and an operating part 702. In the second limiting state, the insertion rod 701 engages with the first insertion hole 501 and the second insertion hole 601. The operating part 702 protrudes from the side wall of the insertion rod 701. The first connecting seat 5 includes a sliding groove 8 extending along the first direction X and communicating with the first insertion hole 501 and a limiting groove 9 communicating with the sliding groove 8. The operating part 702 is disposed within the slide groove 8 and has a movable state in which it slidably engages with the slide groove 8 along the first direction X, and a positioning state in which it engages with the limiting groove 9. The first elastic element 10 is disposed between the plug rod 701 and the closed end of the first insertion hole 501.

[0095] like Figure 3 and Figure 4 As shown, each test interface 101 on the first test machine 1 and the second test machine 2 is provided with a dust cover 11. Each dust cover 11 is independently installed on the first test machine 1 and the second test machine 2.

[0096] like Figure 5 As shown, each dust cover 11 includes a mounting base 111, a rotating shaft 112, a cover plate 113, and a second elastic element 114. Each mounting base 111 mounted on the first testing machine 1 is connected to a first connecting base 5. Each mounting base 111 mounted on the second testing machine 2 is connected to a second connecting base 6. The rotating shaft 112 is rotatably mounted on the mounting base 111. The cover plate 113 is rotatably connected to the rotating shaft 112 about its axis to cover or expose the test interface 101. The second elastic element 114 is configured to apply a force to the cover plate 113 that tends to cover the test interface 101. The second elastic element 114 includes a torsion spring sleeved outside the rotating shaft 112, with a first end acting on the corresponding first testing machine 1 or second testing machine 2, and a second end acting on the corresponding cover plate 113.

[0097] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and not to limit them; although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this application or equivalent substitutions can be made to some technical features, all of which should be covered within the scope of the technical solutions claimed in this application.

Claims

1. A network fault detection device, characterized in that, include: First test machine (1); Second test machine (2); and The first test machine (1) and the second test machine (2) are detachably connected through the connection structure. The connection structure includes: The first limiting unit has a first limiting state and a first limiting release state. In the first limiting state, the first limiting unit is configured to lock the relative positions of the first testing machine (1) and the second testing machine (2) in mutually perpendicular first directions (X) and second directions (Y). In the first limiting release state, the first limiting unit is configured to release the locking of the relative positions of the first testing machine (1) and the second testing machine (2). The second limiting unit has a second limiting state and a second limiting release state. In the second limiting state, the second limiting unit is configured to lock the relative positions of the first test machine (1) and the second test machine (2) in a third direction (Z) when the first limiting unit is in the first limiting state. The third direction (Z) is perpendicular to the first direction (X) and the second direction (Y). In the second limiting release state, the second limiting unit is configured to release the locking of the relative positions of the first test machine (1) and the second test machine (2).

2. The network fault detection device according to claim 1, characterized in that, The first limiting unit includes: Slot (3) is provided on one of the first test machine (1) and the second test machine (2); and A plug (4) is disposed on the other of the first test machine (1) and the second test machine (2). In the first limiting state, the plug (4) is configured to be slidably inserted into the slot (3) along the third direction (Z) and to limit the relative positions of the first test machine (1) and the second test machine (2) along the first direction (X) and the second direction (Y). In the first limiting release state, the plug (4) is configured to disengage from the slot (3) to release the locking of the relative positions of the first test machine (1) and the second test machine (2) along the first direction (X) and the second direction (Y).

3. The network fault detection device according to claim 1, characterized in that, The second limiting unit includes: The first connecting seat (5) is fixedly mounted on the first testing machine (1); The second connecting seat (6) is fixedly mounted on the second testing machine (2); and In the second limiting state, the limiting member (7) is configured to cooperate with both the first connecting seat (5) and the second connecting seat (6) to lock the relative positions of the first connecting seat (5) and the second connecting seat (6) at least in the third direction (Z). In the second limiting release state, the limiting member (7) is configured to disengage from at least one of the first connecting seat (5) and the second connecting seat (6) to release the locking of the relative positions of the first connecting seat (5) and the second connecting seat (6).

4. The network fault detection device according to claim 3, characterized in that, The limiting member (7) is movably disposed on the first connecting seat (5) or the second connecting seat (6) along the first direction (X) so that the second limiting unit switches between the second limiting state and the second limiting release state.

5. The network fault detection device according to claim 3, characterized in that, The first connecting seat (5) is disposed on the edge of the first testing machine (1) and extends along the first direction (X); The second connecting seat (6) is disposed on the edge of the second testing machine (2) and extends along the first direction (X). In the second limiting state, the ends of the first connecting seat (5) and the second connecting seat (6) that are close to each other are opposite.

6. The network fault detection device according to claim 5, characterized in that, The first connector (5) includes a first socket (501) extending along the first direction (X), and the end of the first socket (501) near the second connector (6) has a first opening (502). The second connector (6) includes a second socket (601) extending along the first direction (X), and the end of the second socket (601) near the first connector (5) is provided with a second opening (602) opposite to the first opening (502). The limiting member (7) includes a plug rod (701). In the second limiting state, the plug rod (701) engages with the first socket (501) and the second socket (601). In the second limiting release state, the plug rod (701) disengages from at least one of the first socket (501) and the second socket (601).

7. The network fault detection device according to claim 6, characterized in that, The first orifice (502) is a flared opening with a gradually increasing cross-sectional area toward the second orifice (602); and / or The second opening (602) is a flared opening with a gradually increasing cross-sectional area toward the first opening (502).

8. The network fault detection device according to claim 6, characterized in that, The limiting member (7) includes an operating part (702) protruding from the side wall of the insertion rod (701), and the first connecting seat (5) and / or the second connecting seat (6) includes a groove (8) extending along the first direction (X) and communicating with the first insertion hole (501) and / or the second insertion hole (601), wherein the operating part (702) is disposed in the groove (8) and has a movable state that slidably engages with the groove (8) along the first direction (X).

9. The network fault detection device according to claim 8, characterized in that, The first connecting seat (5) and / or the second connecting seat (6) include a limiting groove (9) communicating with the slide (8), and the operating part (702) also has a positioning state that engages with the limiting groove (9).

10. The network fault detection device according to claim 6, characterized in that, A first elastic element (10) is provided between the insertion rod (701) and the closed end of the first insertion hole (501) or between the insertion rod (701) and the closed end of the second insertion hole (601).

11. The network fault detection device according to any one of claims 1 to 10, characterized in that, The first test machine (1) and the second test machine (2) include at least one test interface (101). The network fault detection device also includes a dust cover (11), which is installed on the first test machine (1) or the second test machine (2) and is configured to cover or expose the test interface (101).

12. The network fault detection device according to claim 11, characterized in that, The dust cover (11) includes: Mounting base (111) is installed on the first test machine (1) or the second test machine (2); A rotating shaft (112) is rotatably mounted on the mounting base (111); and A cover plate (113) is rotatably connected to the pivot (112) about the axis of the pivot (112) to cover or expose the test interface (101).

13. The network fault detection device according to claim 12, characterized in that, The second limiting unit includes a first connecting seat (5), which is fixedly mounted on the first testing machine (1), and at least a portion of the mounting seat (111) is mounted on the first connecting seat (5); and / or The second limiting unit includes a second connecting seat (6), which is fixedly mounted on the second testing machine (2), and the mounting seat (111) is mounted on the second connecting seat (6).

14. The network fault detection device according to claim 12, characterized in that, The dust cover (11) also includes a second elastic element (114) configured to apply a force to the cover plate (113) that tends to cover the test interface (101).

15. The network fault detection device according to claim 14, characterized in that, The second elastic element (114) includes a torsion spring sleeved outside the rotating shaft (112), the first end of the torsion spring acting on the first testing machine (1) or the second testing machine (2), and the second end of the torsion spring acting on the cover plate (113).

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