Over-line protection device and inverter

Abstract

The utility model provides a wire passing protection device, which is used for protection of wire passing of a cable relative to a shell, and comprises a wire protection sleeve, the wire protection sleeve is arranged on the shell, the wire protection sleeve comprises a wire passing channel, the wire passing channel is communicated with the inner space and the outer space of the shell, the wire passing channel is used for penetration of the cable, and the wire passing channel is communicated with the first end and the second end of the wire passing channel; the aperture of the wire passing channel is gradually reduced; and the wire protecting sleeve can be cut off at at least one position between the first end and the second end of the wire passing channel so as to adjust the minimum caliber of the remaining part of the wire passing channel, so that the minimum caliber of the remaining part of the wire passing channel is matched with the wire diameter of the cable. The wire passing protection device provided by the embodiment of the utility model can adapt to cables with different wire diameter specifications.

Description

Technical Field

[0001] The present application relates to the field of inverter installation, and in particular to a line crossing protection device and an inverter. Background Art

[0002] The current inverter line structure mostly uses a cable gland to fix the opening position at the board end. Usually, the cable diameter needs to be determined, and a cable waterproof connector that is consistent with the cable diameter needs to be selected. The board end opening diameter also needs to be determined. Once the cable diameter changes, it cannot be changed. This results in the current inverter line passing being relatively simple, and cables of different thicknesses cannot be used flexibly. Once the cable diameter is determined, the board end opening diameter is already determined, and it is difficult to replace connectors of different specifications. Utility Model Content

[0003] The purpose of the present application is to provide a technical solution to solve the problem in the related art that the inverter incoming line structure cannot be flexibly applied to cables of different diameters.

[0004] Based on the above objectives, the present application provides a wire-passing protection device for protecting a cable from passing through a housing, the device comprising:

[0005] A wire protection sleeve is arranged on the housing, and the wire protection sleeve includes a wire passage, the wire passage connects the inner and outer spaces of the housing, and the wire passage is used for the cable to pass through, and the diameter of the wire passage gradually decreases from the first end to the second end of the wire passage;

[0006] The cable sheath can be cut off at least at one position between the first end and the second end of the cable passage to adjust the minimum diameter of the remaining portion of the cable passage so that the minimum diameter of the remaining portion of the cable passage matches the cable diameter.

[0007] Furthermore, the cable sheath is provided with at least one cut-off portion. After the cable sheath is cut off at any cut-off portion, the minimum diameter of the remaining portion of the cable passage matches a cable of a certain wire diameter specification.

[0008] Furthermore, the outer surface of the wire protection sleeve includes annular structures stacked along the axial direction of the wire passage, and the connecting portion between any two adjacent annular structures is a truncation portion.

[0009] Furthermore, the outer diameter of the annular structure decreases successively from the first end to the second end.

[0010] Furthermore, a slot is provided at a portion of the wire protection sleeve close to the first end, the slot matches a hole on the shell, and the wire protection sleeve is connected to the shell via the slot.

[0011] Furthermore, the device also includes:

[0012] An isolating member, which is disposed inside the housing and is used to isolate at least a portion of the internal space of the housing from the wire sheath;

[0013] A plurality of circular hole marks are provided on the isolating piece. According to any of the circular hole marks, at least two through holes with different apertures can be processed on the isolating piece. The through holes are used for passing cables, and the wire diameter of the cables passing through the through holes matches the aperture of the through holes.

[0014] Furthermore, at least two circular hole marks are concentrically arranged.

[0015] Furthermore, the isolating member includes a first isolating portion and a second isolating portion that can be separated, and any circular hole mark is formed by splicing the first isolating portion and the second isolating portion.

[0016] Furthermore, the wire protection sleeve and the isolating piece are both made of flame-retardant and anti-aging rubber materials.

[0017] The present application also provides an inverter, which includes the over-line protection device as described above.

[0018] According to the above description, the over-the-line protection device and the inverter provided in the embodiments of the present application can adapt to cables with different wire diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of a line crossing protection device provided in an embodiment of the present application installed on a housing;

[0020] Figure 2 A schematic diagram of a wire protection sleeve provided in an embodiment of the present application;

[0021] Figure 3 A schematic diagram of an isolation element provided in an embodiment of the present application;

[0022] Figure 4 A schematic diagram of an explosion of an isolation member provided in an embodiment of the present application;

[0023] Figure 5 A schematic diagram of a housing of an inverter provided in an embodiment of the present application.

[0024] Reference numerals: wire protection device 100 ; wire protection sleeve 11 ; wire passage 111 ; cut-off portion 112 ; slot 113 ; spacer 12 ; circular hole mark 121 ; first spacer portion 122 ; second spacer portion 123 ; housing 21 ; first partition plate 211 ; second partition plate 212 . DETAILED DESCRIPTION

[0025] The present application will be described in detail below in conjunction with the specific implementation modes shown in the accompanying drawings, but these implementation modes do not limit the present application. Structural, methodological, or functional changes made by ordinary technicians in the field based on these implementation modes are included in the protection scope of the present application.

[0026] The purpose of the present application is to provide a technical solution to solve the problem in the related art that the inverter incoming line structure cannot be flexibly applied to cables of different diameters.

[0027] Based on the above problems, combined with Figure 1 and Figure 2 The embodiment of the present application provides a wire protection device 100 for protecting a cable from passing through a housing 21. The device includes a wire protection sleeve 11.

[0028] The cable sheath 11 is used to be arranged on the housing 21. The cable sheath 11 includes a cable passage 111. The cable passage 111 communicates with the inner and outer spaces of the housing 21. The cable passage 111 is used for the cable to pass through. From the first end to the second end of the cable passage 111, the diameter of the cable passage 111 is gradually reduced. The cable sheath 11 can be cut off at least one position between the first end and the second end of the cable passage 111 to adjust the minimum diameter of the remaining part of the cable passage 111 so that the minimum diameter of the remaining part of the cable passage 111 matches the cable diameter.

[0029] It should be noted that the over-the-line protection device 100 provided in the embodiment of the present application can be applied to most scenarios where the cable needs to pass through the housing 21. For example, the over-the-line protection device 100 provided in the embodiment of the present application can be applied to the incoming line structure of the inverter. In the application scenario of the incoming line of the inverter, the inverter is arranged in the housing 21, and the cable needs to pass through the housing 21 to connect to the inverter. The over-the-line protection device 100 provided in the embodiment of the present application can be applied to this scenario to provide waterproof protection for the housing 21.

[0030] In the wire protection device 100 provided in the embodiment of the present application, the wire protection sleeve 11 includes a wire passage 111 whose diameter gradually decreases from the first end to the second end. For the convenience of explanation, in the embodiment of the present application, the port of the wire passage 111 close to the first end is defined as the first port, and the port of the wire passage 111 close to the second end is defined as the second port, and the portion of the wire protection sleeve 11 close to the first end is connected to the housing 21.

[0031] The wire sheath 11 can be cut off at least at one position between the first end and the second end of the wire passage 111. After the wire sheath 11 is cut off, a new port will be formed away from the first port for the remaining portion of the wire sheath 11 connected to the housing 21 (i.e., the portion retaining the first port). For ease of explanation, the new port is defined as a third port in the embodiment of the present application. It is easy to understand that since the caliber of the wire passage 111 of the wire sheath 11 gradually decreases from the first end to the second end, the caliber of the third port is larger than that of the second port. By selecting the cut-off position of the wire sheath 11, third ports of different calibers can be obtained, thereby being able to accommodate cables with different wire diameter specifications.

[0032] It should be noted that the second end of the wire sleeve 11 can be an open design or a closed design. It only needs to be ensured that after the wire sleeve 11 is cut off at a position between the first end and the second end, the wire passage 111 on the portion of the wire sleeve 11 where the first port is retained is connected.

[0033] As an optional implementation, after the wire passage 111 is cut off at any point between the first end and the second end, the cross section of the formed third port can be circular or approximately circular, so as to adapt to the shape of the cable, thereby providing better waterproof protection for the housing 21. Preferably, in the embodiment of the present application, the cross section of the third port formed after the wire passage 111 is cut off is circular.

[0034] As an optional implementation, for the wire-passing channel 111, the shape of the wire-passing channel 111 can be a cone, a truncated cone, a hemispherical shape, etc., or other deformations, and it is only necessary to ensure that the caliber of the wire-passing channel 111 is gradually reduced from the first end to the second end as a whole. For example, the wire-passing channel 111 can be provided with a transition portion close to the first end and a constricted portion connected to the transition portion. The caliber of the wire-passing channel 111 of the transition portion can be no significantly different from that of the first end, and the wire-passing channel 111 of the constricted portion gradually shrinks in the direction from the first end to the second end, thereby ensuring that the caliber of the wire-passing channel 111 is gradually reduced from the first end to the second end as a whole.

[0035] As an optional implementation method, in the wire protection device 100 provided in the embodiment of the present application, the wire sleeve 11 is provided with at least one cutting portion 112. After the wire sleeve 11 is cut off at any cutting portion 112, the minimum diameter of the remaining part of the wire passage 111 matches a cable of a wire diameter specification.

[0036] Specifically, the cable sheath 11 provided in the embodiment of the present application is provided with at least one cut-off portion 112. After the cable sheath 11 is cut off from any cut-off portion 112, the minimum diameter of the remaining portion (i.e., the portion retaining the first port) is the diameter of the third port, and the diameter of the third port matches a cable of a wire diameter specification. In this way, it is only necessary to select the corresponding cut-off portion 112 according to the wire diameter specification of the cable to ensure that the cut-off cable sheath 11 can match the cable of the wire diameter specification, thereby avoiding manual errors and ensuring the waterproof performance of the cable sheath 11.

[0037] As an optional implementation, in the embodiment of the present application, the outer surface of the wire sheath 11 includes an annular structure stacked axially along the wire passage 111 , and the connecting portion between any two adjacent annular structures is a truncation portion 112 .

[0038] Specifically, for the annular structure, the cross-section of the annular structure may be circular, square, rectangular, prismatic, etc. In the embodiment of the present application, the cross-section of the annular structure is preferably circular.

[0039] Taking the case where the cross section of the annular structure is a circle as an example, the outer diameters of the annular structures can be the same. In this embodiment, the outer side of the wire passage 111 can be simply understood as a column composed of a plurality of stacked annular structures. The connecting portion between each two adjacent annular structures can be used as the truncation portion 112.

[0040] As another optional implementation, the outer diameters of the annular structures may be different. Specifically, in the embodiment of the present application, the outer diameters of the annular structures decrease in sequence from the first end to the second end of the wire passage 111. In this way, the thickness of the portion of the cable sheath 11 close to the second end may be reduced, thereby facilitating the operator to cut and truncate the cable sheath 11.

[0041] As an optional implementation, the cable sheath 11 is made of flame-retardant and anti-aging rubber material, which can facilitate operators to cut the cable sheath 11 using a knife on site.

[0042] As an optional implementation, in the embodiment of the present application, a slot 113 is provided at a portion of the cable sheath 11 near the first end, the slot 113 matches a hole on the housing 21, and the cable sheath 11 is connected to the housing 21 via the slot 113. In this way, the cable sheath 11 can be easily replaced.

[0043] According to the above description, the wire protection device 100 provided in the embodiment of the present application can adapt to cables of different wire diameters. In one application scenario, it is necessary to replace a cable with a larger wire diameter. The wire sheath 11 can be cut to expand the minimum diameter of the remaining part of the wire sheath 11 so that the wire sheath 11 can adapt to cables with larger wire diameter specifications. In another application scenario, it is necessary to replace a cable with a smaller wire diameter. In this case, a new wire sheath 11 needs to be replaced and a smaller diameter of the wire passage 111 needs to be cut to meet the application of cables with small wire diameters.

[0044] As an optional implementation, Figure 3 As shown, the wire crossing protection device 100 provided in the embodiment of the present application further includes an isolating member 12. The isolating member 12 is disposed inside the housing 21, and is used to isolate at least part of the internal space of the housing 21 from the wire sheath 11.

[0045] As an optional implementation method, the isolating member 12 provided in the embodiment of the present application is provided with a plurality of circular hole marks 121. According to any circular hole mark 121, at least two through holes with aperture diameters can be processed on the isolating member 12. The through holes are used for the passage of cables, and the wire diameter specification of the cable passing through the through holes matches the aperture diameter of the through holes.

[0046] Specifically, by drilling a hole in the isolating member 12, the cable passes through the cable sheath 11 and the isolating member 12 in sequence and is connected to the electronic device inside the housing 21. The isolating member 12 can isolate the portion of the housing 21 internal space containing the electronic device from the cable sheath 11, thereby providing double protection. In addition, according to the size of the hole drilled in the isolating member 12, the isolating member 12 can be adapted to cables of different wire diameters.

[0047] It is easy to understand that the through hole of the isolation member 12 can limit the mobility of a part of the cable. As an optional implementation method, the isolation member 12 can be set close to the wire sheath 11, so as to maximize the local fixing effect of the isolation member 12 on the cable, prevent the cable from shaking and causing deformation of the wire sheath 11, and ensure the waterproof performance of the wire sheath 11.

[0048] As an optional implementation, the center of the circular hole mark 121 marked on the isolation member 12 may be concentric or non-concentric. In the embodiment of the present application, two groups of circular hole marks 121 are provided on the isolation member 12, and any group of circular hole marks 121 includes at least two concentrically arranged circular hole marks 121. Furthermore, the center of the circular hole mark 121 is directly opposite to the wire passage 111 of the cable sheath 11, and in this way, the cable can be easily installed.

[0049] like Figure 4As shown, as an optional implementation, the isolation member 12 includes a first isolation portion 122 and a second isolation portion 123 that can be separated, and any circular hole mark 121 is formed by splicing the first isolation portion 122 and the second isolation portion 123.

[0050] Specifically, for the sake of convenience, the part where the first isolating part 122 and the second isolating part 123 meet is called a connecting surface, and a portion of the circular hole-digging mark 121 is marked near the connecting surface of the first isolating part 122, and the remaining portion of the circular hole-digging mark 121 is marked near the connecting surface of the second isolating part 123. By combining the first isolating part 122 and the second isolating part 123, a complete circular hole-digging mark 121 can be obtained. With this arrangement, when it is necessary to dig a hole in the isolating member 12, the isolating member 12 can be split into two parts for processing, and the exposed connecting surface is conducive to the execution of the digging operation.

[0051] As an optional implementation method, the isolation piece 12 provided in the embodiment of the present application is made of flame-retardant and anti-aging rubber material, which can facilitate operators to use a tool to dig holes in the isolation piece 12 on site.

[0052] like Figure 5 As shown, an embodiment of the present application further provides an inverter, and the inverter includes the over-line protection device 100 provided in an embodiment of the present application.

[0053] Specifically, the inverter includes a housing 21 , and a hole is provided on the housing 21 . The hole is used to cooperate with the slot 113 on the cable sheath 11 to clamp the cable sheath 11 on the housing 21 .

[0054] The cable sheath 11 provided in the embodiment of the present application includes a cable passage 111, which is connected to the inner and outer spaces of the housing 21. The cable passage 111 is used for the cable to pass through, and the diameter of the cable passage 111 gradually decreases from the first end to the second end of the cable passage 111. The cable sheath 11 can be cut off at least one position between the first end and the second end of the cable passage 111 to adjust the minimum diameter of the remaining part of the cable passage 111 so that the minimum diameter of the remaining part of the cable passage 111 matches the cable diameter.

[0055] As an optional implementation method, in the inverter provided in the embodiment of the present application, a first partition 211 and a second partition 212 are further provided inside the shell 21, near the bottom of the shell 21, and a accommodating space is provided between the first partition 211 and the second partition 212, and the accommodating space is used to install the isolation member 12 provided in the embodiment of the present application.

[0056] In summary, the over-the-line protection device 100 and the inverter provided in the embodiment of the present application can adapt to cables with different wire diameters.

[0057] The above disclosure is only the preferred embodiment of the present application, but it is not intended to limit the scope of rights of the present application. A person of ordinary skill in the art can understand that without departing from the spirit and scope of the present application and the appended claims, changes, modifications, substitutions, combinations, and simplifications should all be equivalent replacement methods and still fall within the scope covered by the present application.

Claims

1. A wire protection device for protecting a cable from passing through a housing, characterized in that: The device comprises: A wire protection sleeve, the wire protection sleeve is arranged on the housing, the wire protection sleeve comprises a wire passage, the wire passage communicates with the inner and outer spaces of the housing, the wire passage is used for the cable to pass through, and the diameter of the wire passage gradually decreases from the first end to the second end of the wire passage; The cable sheath can be cut off at least at one position between the first end and the second end of the cable passage to adjust the minimum diameter of the remaining portion of the cable passage so that the minimum diameter of the remaining portion of the cable passage matches the wire diameter of the cable.

2. The over-line protection device according to claim 1, characterized in that: The cable sheath is provided with at least one cut-off portion. After the cable sheath is cut off at any of the cut-off portions, the minimum diameter of the remaining portion of the cable passage matches a cable of a certain wire diameter specification.

3. The over-line protection device according to claim 2, characterized in that: The outer surface of the wire protection sleeve includes annular structures stacked along the axial direction of the wire passage, and the connecting portion between any two adjacent annular structures is the truncation portion.

4. The over-line protection device according to claim 3, characterized in that: The outer diameter of the annular structure decreases gradually from the first end to the second end.

5. The over-line protection device according to claim 1, characterized in that: A clamping slot is provided at a portion of the wire protection sleeve close to the first end, the clamping slot matches a hole on the shell, and the wire protection sleeve is clamped on the shell through the clamping slot.

6. The over-line protection device according to claim 1, characterized in that: The device also includes: An isolating member, the isolating member being arranged inside the housing and being used to isolate at least a portion of an inner space of the housing from the wire sheath; A plurality of circular hole marks are provided on the isolating member. According to any of the circular hole marks, at least two through holes with different apertures can be processed on the isolating member. The through holes are used for passing the cables, and the wire diameter of the cables passing through the through holes matches the aperture of the through holes.

7. The over-line protection device according to claim 6, characterized in that: At least two of the circular hole marks are concentrically arranged.

8. The over-line protection device according to claim 6, characterized in that: The isolating member includes a first isolating portion and a second isolating portion that can be separated, and any of the circular hole marks is formed by splicing the first isolating portion and the second isolating portion.

9. The over-line protection device according to claim 6, characterized in that: The wire protection sleeve and the isolating piece are both made of flame-retardant and anti-aging rubber materials.

10. An inverter, characterized in that: The inverter comprises the over-line protection device according to any one of claims 1 to 9.

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