Quick turn-off device

Abstract

The utility model discloses a quick turn-off device, which comprises a shell, a plugging block and a cover plate, the shell is provided with a through hole and a first accommodating semi-groove, the through hole penetrates through the thickness of the shell, the first accommodating semi-groove is communicated with the through hole, the plugging block is used for being matched with the through hole, and the cover plate is used for covering the first accommodating semi-groove. The plugging block is detachably connected with the shell through a fastener, a second accommodating half groove is formed in the plugging block, after the plugging block is matched with the through hole, the second accommodating half groove and the first accommodating half groove are matched to form an accommodating groove for accommodating an electric wire, and the cover plate is detachably assembled with the shell. A plurality of protrusions are arranged on the bottom face of the cover plate in a protruding mode, and the bottom face is the face, facing the shell, of the cover plate. The installation stability between the cover plate and the shell and the installation stability between the plugging block and the shell are improved, and the risk that the cover plate is damaged by ejection force of glue is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaic assembly technology, and specifically relates to a fast switch. Background Art

[0002] A fast disconnector is a device that can quickly cut off the circuit in an emergency. It is widely used in photovoltaic systems to ensure safety in emergency situations such as fire. With the advancement of photovoltaic technology, the system voltage level has increased, and the risk of fire has also increased. The fast disconnection function can quickly cut off the connection between components, reducing the risk of electric shock and rescue. The shell and the blocking block of the existing fast disconnector are directly assembled by ultrasonic means, which has low assembly stability, and after the shell is injected with glue, the cover plate is easily pushed out by the glue. Utility Model Content

[0003] In view of the deficiencies of the prior art, the purpose of the utility model is to provide a quick shut-off device, which solves the problems in the prior art of low assembly stability between the cover plate and the housing and between the blocking block and the housing, and the cover plate being easily damaged by the ejection force of the glue.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] The present application discloses a quick disconnect device, comprising a shell, a blocking block and a cover plate, wherein the shell is provided with a through hole and a first accommodating half groove, wherein the through hole penetrates the thickness of the shell, and the first accommodating half groove is communicated with the through hole, and the blocking block is used to cooperate with the through hole, and the blocking block is detachably connected to the shell through a fastener, and a second accommodating half groove is provided on the blocking block, and after the blocking block cooperates with the through hole, the second accommodating half groove cooperates with the first accommodating half groove to form an accommodating groove for accommodating electric wires, and the cover plate is detachably assembled with the shell, and a plurality of protrusions are protruded on the bottom surface of the cover plate, and the bottom surface is a side of the cover plate facing the shell.

[0006] In some embodiments, the cover plate is provided with a glue injection hole and an exhaust hole, the glue injection hole is used to complete the glue injection inside the shell after the cover plate and the shell are assembled, after the glue is injected into the shell, the protrusion contacts the glue, and a gap is set between the bottom surface of the cover plate and the glue.

[0007] In some embodiments, the protrusions are arranged in a rectangular array, a circular array, or scattered on the cover plate.

[0008] In some embodiments, there are at least two first accommodating half-grooves, the number of the second accommodating half-grooves matches the number of the first accommodating half-grooves, a first partitioning platform is provided between two adjacent first accommodating half-grooves, and a second partitioning platform is provided between two adjacent second accommodating half-grooves, a locking hole is provided on the first partitioning platform, and a hollow stud is built into the second partitioning platform, and the fastener passes through the locking hole and is fastened with the hollow stud to realize a detachable connection between the outer shell and the blocking block.

[0009] In some embodiments, a top surface of the hollow stud is not higher than a second dividing surface of the second dividing platform.

[0010] In some embodiments, the first partition platform includes a first partition surface, the first partition surface is a surface opposite to the second partition surface, a sealing ring protrudes from either the first partition surface or the second partition surface, and the hollow stud is surrounded by the sealing ring.

[0011] In some embodiments, the first accommodating half groove includes a first half groove surface, the second accommodating half groove includes a second half groove surface, and a sealing strip protrudes from any one of the first half groove surface and the second half groove surface.

[0012] In some embodiments, the housing includes a side plate and a bottom plate, the side plate is arranged around the periphery of the bottom plate, and the through hole is opened on the side plate.

[0013] In some embodiments, a plurality of heat dissipation ribs are disposed on the bottom surface of the base plate.

[0014] In some embodiments, the quick disconnector also includes a circuit board and an input line and an output line. The circuit board is supported above the base plate. After passing through the receiving groove, one end of the input line is electrically connected to the input end of the circuit board, and the other end of the input line is connected to an input plug connector. After passing through the receiving groove, one end of the output line is electrically connected to the output end of the circuit board, and the other end of the output line is connected to an output plug connector.

[0015] The present invention includes but is not limited to the following beneficial effects: (1) The present application realizes a detachable connection between the blocking block and the shell by fasteners, which improves the installation stability between the blocking block and the shell compared to the prior art in which the blocking block is only installed by ultrasonic waves; (2) In the present application, by providing a plurality of protrusions on the cover plate, the protrusions are in contact with the glue after the glue is injected, and the bottom surface of the cover plate is separated from the glue, which can avoid the problem of low fit between the cover plate and the shell due to insufficient glue injection, affecting the installation stability, and can also reduce the risk of the cover plate being damaged by the ejection force of the glue due to excessive glue injection. (3) by providing a half-groove to accommodate the wires, a flexible wire accommodation space is provided to accommodate wires of different diameters or shapes; (4) by embedding a hollow stud in the second partition table, the assembly of the fastener and the hollow stud is achieved, thereby improving the fastening stability; (5) by protruding a sealing ring on the partition surface and a sealing strip on the half-groove surface, the sealing effect of the accommodating groove can be improved and the risk of glue flowing out of the accommodating groove can be reduced; (6) by providing multiple heat dissipation barriers on the bottom plate, the overall heat dissipation effect of the quick disconnector is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0017] Figure 1 It is a schematic diagram of the overall structure of the fast shut-off device of the embodiment of the utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the housing of an embodiment of the utility model;

[0019] Figure 3 It is an exploded view of the housing of an embodiment of the utility model;

[0020] Figure 4 This is a schematic structural diagram of a cover plate of an embodiment of the utility model at an angle;

[0021] Figure 5 This is a schematic structural diagram of a housing of an embodiment of the utility model at one angle;

[0022] Figure 6 This is a schematic structural diagram of a blocking block according to an embodiment of the utility model;

[0023] In the figure, 1-housing, 11-first accommodating half groove, 12-first dividing platform, 13-through hole, 14-side plate, 15-bottom plate, 151-heat dissipation rib, 16-buckle, 2-cover plate, 21-protrusion, 22-glue injection hole, 23-exhaust hole, 24-slot, 3-blocking block, 31-second accommodating half groove, 311-second half groove surface, 32-second dividing platform, 321-second dividing surface, 4-fastener, 5-hollow stud, 6-sealing ring, 7-sealing strip, 8-accommodating groove, 9-circuit board, 10-input line, 20-output line, 30-input plug connector, 40-output plug connector. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The present application discloses a fast shut-off device, specifically, Figure 2 , Figure 3 and Figure 5 As shown, the quick disconnector includes a shell 1, a blocking block 3 and a cover plate 2. A through hole 13 and a first accommodating half groove 11 are provided on the shell 1. The through hole 13 runs through the thickness of the shell 1. The first accommodating half groove 11 is communicated with the through hole 13. The blocking block 3 is used to cooperate with the through hole 13. The blocking block 3 is detachably connected to the shell 1 through a fastener 4. A second accommodating half groove 31 is provided on the blocking block 3. After the blocking block 3 cooperates with the through hole 13, the second accommodating half groove 31 cooperates with the first accommodating half groove 11 to form an accommodating groove 8 for accommodating the wire. The cover plate 2 is detachably assembled with the shell 1. A plurality of protrusions 21 protrude from the bottom surface of the cover plate 2, and the bottom surface is the side of the cover plate 2 facing the shell 1.

[0026] In some embodiments, the cover plate 2 is provided with a glue injection hole 22 and an exhaust hole 23. The glue injection hole 22 is used to complete the glue injection inside the shell 1 after the cover plate 2 and the shell 1 are assembled. After the glue is injected into the shell 1, the protrusion 21 contacts the glue, and a gap is set between the bottom surface of the cover plate 2 and the glue. The exhaust hole 23 is used to exhaust the air in the shell 1 during the glue injection process. Furthermore, the glue injection hole 22 and the exhaust hole 23 can also be used as a peephole in actual operation to facilitate observation of the glue injection situation.

[0027] Furthermore, a card slot 24 is provided on the cover plate 2 , and a card buckle 16 is provided on the housing 1 , so as to realize the card connection between the cover plate 2 and the housing 1 .

[0028] Furthermore, the protrusions 21 may be arranged on the cover plate 2 in a rectangular array, in a circular array, or in a scattered arrangement. Figure 4 As shown, the protrusions 21 are arranged in a rectangular array on the cover plate 2. Specifically, the shape of the protrusions 21 can be a cone shape, a convex point shape, or a prism shape. It can be understood that the arrangement mode, the number of protrusions 21, and the shape of the protrusions 21 can be set based on actual needs. The above examples are only exemplary and do not specifically limit them.

[0029] It is understandable that the present application realizes the detachable connection between the blocking block 3 and the housing 1 by fasteners 4, which improves the installation stability between the blocking block 3 and the housing 1 compared with the prior art that only installs the blocking block 3 by ultrasonic wave; by setting a plurality of protrusions 21 on the cover plate 2, the protrusions 21 are in contact with the glue after the glue is injected, and the bottom surface of the cover plate 2 is separated from the glue, which can avoid the problem of low fit between the cover plate 2 and the housing due to insufficient glue injection, affecting the installation stability, and can reduce the risk of the cover plate 2 being damaged by the ejection force of the glue due to excessive glue injection. Furthermore, in the embodiment of the present application, the accommodation of the wires is realized by setting a half-groove, which provides a flexible wire accommodation space that can accommodate wires of different diameters or shapes.

[0030] For example, see Figure 5 and Figure 6 , there are two through holes 13 arranged on the left and right, there are at least two first accommodating half grooves 11, and the number of second accommodating half grooves 31 matches the number of first accommodating half grooves 11. In this example, there are two first accommodating half grooves 11 and two second accommodating half grooves 31. A first partition 12 is arranged between two adjacent first accommodating half grooves 11, and a second partition 32 is arranged between two adjacent second accommodating half grooves 31. A locking hole is provided on the first partition 12, and a hollow stud 5 is built in the second partition 32. The fastener 4 passes through the locking hole and is fastened with the hollow stud 5 to achieve a detachable connection between the housing 1 and the blocking block 3. It can be understood that by building the hollow stud 5 in the second partition 32, the assembly of the fastener 4 and the hollow stud 5 is achieved, thereby improving the fastening stability.

[0031] In some embodiments, the top surface of the hollow stud 5 is not higher than the second dividing surface 321 of the second dividing platform 32 .

[0032] In some embodiments, the first partition platform 12 includes a first partition surface, which is a surface opposite to the second partition surface 321. A sealing ring 6 protrudes from either the first partition surface or the second partition surface 321, and the hollow stud 5 is surrounded by the sealing ring 6. Figure 5 As shown, the sealing ring 6 is arranged on the second partition surface 321. In some embodiments, the first accommodating half groove 11 includes a first half groove surface, and the second accommodating half groove 31 includes a second half groove surface 311, and a sealing strip 7 protrudes from either the first half groove surface or the second half groove surface 311. Figure 5 As shown, the sealing strip 7 is arranged on the second half groove surface 311. By protruding the sealing ring 6 on the partition surface and the sealing strip 7 on the half groove surface, the sealing effect of the accommodating groove 8 can be improved and the risk of glue flowing out of the accommodating groove 8 can be reduced.

[0033] In some embodiments, the housing 1 includes a side plate 14 and a bottom plate 15 , the side plate 14 is disposed around the bottom plate 15 , and the through hole 13 is opened on the side plate 14 .

[0034] In some embodiments, continue to refer to Figure 5 A plurality of heat dissipation ribs 151 are arranged on the bottom surface of the bottom plate 15. By arranging a plurality of heat dissipation ribs on the bottom plate 15, the overall heat dissipation effect of the fast disconnector is improved.

[0035] In some embodiments, Figure 1 As shown, the rapid disconnector also includes a circuit board 9 and an input line 10 and an output line 20. The circuit board 9 is supported above the bottom plate 15. After the input line 10 passes through the accommodating groove 8, one end is electrically connected to the input end of the circuit board 9, and the other end of the input line 10 is connected to the input plug connector 30. After the output line 20 passes through the accommodating groove 8, one end is electrically connected to the output end of the circuit board 9, and the other end of the output line 20 is connected to the output plug connector 40.

[0036] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A fast shut-off device, characterized in that: The invention comprises a shell (1), a blocking block (3) and a cover plate (2); the shell (1) is provided with a through hole (13) and a first accommodating half groove (11); the through hole (13) runs through the thickness of the shell (1); the first accommodating half groove (11) is communicated with the through hole (13); the blocking block (3) is used to match the through hole (13); the blocking block (3) is detachably connected to the shell (1) via a fastener (4); a second accommodating half groove (31) is provided on the blocking block (3); after the blocking block (3) is matched with the through hole (13), the second accommodating half groove (31) and the first accommodating half groove (11) cooperate to form an accommodating groove (8) for accommodating electric wires; the cover plate (2) is detachably assembled with the shell (1); a plurality of protrusions (21) are protruded on the bottom surface of the cover plate (2); the bottom surface is the side of the cover plate (2) facing the shell (1).

2. The fast shut-off device according to claim 1, characterized in that: The cover plate (2) is provided with a glue injection hole (22) and an exhaust hole (23); the glue injection hole (22) is used to complete the glue injection inside the shell (1) after the cover plate (2) and the shell (1) are assembled; after the glue is injected into the shell (1), the protrusion (21) contacts the glue, and a gap is provided between the bottom surface of the cover plate (2) and the glue.

3. The fast shut-off device according to claim 1, characterized in that: The protrusions (21) are arranged on the cover plate (2) in a rectangular array, an annular array, or scattered.

4. The fast shut-off device according to claim 1, characterized in that: There are at least two first accommodating half grooves (11), the number of the second accommodating half grooves (31) matches the number of the first accommodating half grooves (11), a first partitioning platform (12) is provided between two adjacent first accommodating half grooves (11), and a second partitioning platform (32) is provided between two adjacent second accommodating half grooves (31), a locking hole is provided on the first partitioning platform (12), and a hollow stud (5) is built into the second partitioning platform (32), and the fastener (4) passes through the locking hole and is fastened with the hollow stud (5) to achieve a detachable connection between the shell (1) and the blocking block (3).

5. The fast shut-off device according to claim 4, characterized in that: The top surface of the hollow stud (5) is not higher than the second dividing surface (321) of the second dividing platform (32).

6. The fast shut-off device according to claim 5, characterized in that: The first partition platform (12) comprises a first partition surface, the first partition surface being a surface opposite to the second partition surface (321), a sealing ring (6) protruding from either the first partition surface or the second partition surface (321), and the hollow stud (5) being enclosed within the sealing ring (6).

7. The fast shut-off device according to claim 4, characterized in that: The first accommodating half groove (11) comprises a first half groove surface, and the second accommodating half groove (31) comprises a second half groove surface (311), and a sealing strip (7) protrudes from either the first half groove surface or the second half groove surface (311).

8. The fast shut-off device according to claim 1, characterized in that: The housing (1) comprises a side plate (14) and a bottom plate (15); the side plate (14) is arranged around the periphery of the bottom plate (15); and the through hole (13) is provided on the side plate (14).

9. The fast shut-off device according to claim 8, characterized in that: A plurality of heat dissipation ribs (151) are arranged on the bottom surface of the bottom plate (15).

10. The fast shut-off device according to claim 8, characterized in that: The rapid disconnector further comprises a circuit board (9) and an input line (10) and an output line (20); the circuit board (9) is supported above the bottom plate (15); one end of the input line (10) is electrically connected to the input end of the circuit board (9) after passing through the receiving groove (8); the other end of the input line (10) is connected to an input plug connector (30); the other end of the output line (20) is electrically connected to the output end of the circuit board (9) after passing through the receiving groove (8); and the other end of the output line (20) is connected to an output plug connector (40).

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