Relay assembly and power distribution equipment

Abstract

The utility model provides a relay assembly and power distribution equipment, and the relay assembly comprises a relay which is disposed in an accommodation cavity, and is provided with a conductive sheet, and the conductive sheet is located at one surface, facing a window, of the relay; and the gripper structure is arranged on the conducting strip. When the relay is fixed in the insulation box, the gripper structure can be exposed out of the insulation box from the window. When the relay needs to be pulled out, a worker can directly apply a force to the gripper structure from the outside of the insulation box to pull out the relay, thereby reducing the constraint of a narrow space to the plugging operation, being easier to apply a force to pull out the relay, being simpler in operation, and improving the dismounting efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of relays, and in particular to a relay assembly and a power distribution device. BACKGROUND

[0002] At present, power systems such as photovoltaic energy storage systems are configured with power distribution devices to realize power control, protection, conversion and distribution. In the related art, the power distribution device usually includes a box body, a conductive bar and a relay. The conductive bar is fixed in the box body, and the conductive bar corresponds to a power distribution branch of the power distribution device. The relay is detachably fixed in the box body, and the conductive sheet of the relay is fixed and electrically connected to the conductive bar by a screw. With the increase of working time, some relays may need to be repaired and replaced. At this time, the worker needs to unscrew the screw on the conductive sheet of the relay, and pull out the relay from the box body. Then, the replaced relay is inserted into the box body and the screw is reinstalled.

[0003] However, due to the large number of electronic devices inside the box body and the narrow space, the relay is prone to tight fit with the structure inside the box body, which makes it difficult for the worker to pull out the relay, and the operation is difficult, which is not conducive to the later maintenance of the device. CONTENT OF THE UTILITY MODEL

[0004] In view of the above, it is necessary to provide a relay assembly and a power distribution device to solve the above technical problems.

[0005] The first aspect of the present application provides a relay assembly for an insulating box of a power distribution device, the insulating box is provided with a receiving cavity, one side of the insulating box is provided with a window, the relay assembly comprises: a relay, which is arranged in the receiving cavity, the relay has a conductive sheet, the conductive sheet is used for connecting a conductive bar, and the conductive sheet is located on the side of the relay facing the window; a gripper structure is arranged on the conductive sheet and located on the side of the conductive sheet away from the conductive bar, and the gripper structure is exposed to the receiving cavity through the window.

[0006] In some embodiments, the gripper structure comprises: a base arranged on the conductive sheet, and the base is located on the side of the conductive sheet away from the conductive bar; a gripper piece arranged on the base, and the gripper piece is exposed to the receiving cavity through the window.

[0007] In some embodiments, the gripper piece is movably arranged on the base, the conductive sheet is provided with a through hole, and the gripper piece has a conductive end; when the gripper piece moves close to the conductive sheet to a first position along a first direction, the conductive end of the gripper piece penetrates the through hole and is connected to the conductive bar, so that the conductive sheet is electrically connected to the conductive bar.

[0008] In some embodiments, the gripper is provided with a first limiting part which moves synchronously with the gripper; the base is provided with a through hole, and a moving space is arranged between the base and the conductive sheet; the gripper is arranged in the through hole, and the first limiting part is arranged in the moving space, and the moving space is used to limit the moving distance of the first limiting part.

[0009] In some embodiments, the first limiting part is annularly arranged on the gripper, and the outer ring diameter of the first limiting part is greater than the hole diameter of the through hole; when the gripper moves away from the conductive sheet to the second position along the second direction, the first limiting part abuts against the base along the second direction; the first direction is opposite to the second direction.

[0010] In some embodiments, the outer ring diameter of the first limiting part is greater than the hole diameter of the through hole; when the gripper moves to the first position, the first limiting part abuts against the conductive sheet away from the conductive row along the first direction.

[0011] In some embodiments, the conductive end of the gripper is provided with a second limiting part, the second limiting part is annularly arranged on the gripper, the outer ring diameter of the second limiting part is greater than the hole diameter of the through hole, and the outer ring diameter of the second limiting part is smaller than the outer ring diameter of the first limiting part, and the circumferential side of the second limiting part is provided with a threaded surface.

[0012] In some embodiments, the base comprises a support block and a connecting block, the connecting block is arranged on the side edge of the support block, and the support block and the connecting block have an included angle therebetween; the side of the connecting block away from the support block is connected to the conductive sheet, so that the moving space is formed between the support block, the connecting block and the conductive sheet.

[0013] In some embodiments, the gripper comprises a rod part and a cap part, the rod part is connected to the base, and the cap part is arranged on the end of the rod part away from the base, and the diameter of the cap part is greater than the diameter of the rod part.

[0014] In some embodiments, the conductive sheet comprises a first conductive sheet and a second conductive sheet, the first conductive sheet and the second conductive sheet are arranged at intervals, and the direction of the interval arrangement has an included angle with the plug-in direction of the relay; the gripper structure comprises a first gripper structure and a second gripper structure, the first gripper structure is arranged on the first conductive sheet, and the second gripper structure is arranged on the second conductive sheet.

[0015] The second aspect of the present application provides a power distribution equipment, comprising a box body, an insulating box and a relay assembly, wherein the insulating box is arranged in the box body, the insulating box is provided with a receiving cavity, the insulating box is provided with a box cover, the box cover covers the cavity opening of the receiving cavity, and the box cover is provided with a window; the relay assembly comprises: a relay arranged in the receiving cavity, the relay has a conductive sheet, the conductive sheet is used to connect a conductive row, and the conductive sheet is located on the side of the relay facing the window; a gripper structure arranged on the conductive sheet and located on the side of the conductive sheet away from the conductive row, and the gripper structure is exposed to the receiving cavity through the window.

[0016] Through the relay assembly and power distribution equipment provided by the present application, when the relay is fixed in the insulation box, the gripper structure can be exposed outside the insulation box from the window. When the relay needs to be pulled out, the worker can directly apply force to the gripper structure from the outside of the insulation box to pull out the relay, reducing the constraints of narrow space on plugging operation, making it easier to apply force to the relay to pull it out, and the operation is simpler, improving the disassembly efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 An exploded view of the power distribution equipment provided by the present application.

[0018] Figure 2 A structural schematic view of the relay assembly and the insulation box provided by the present application.

[0019] Figure 3 An exploded view of the relay assembly and the insulation box provided by the present application.

[0020] Figure 4 A first structural schematic view of the relay assembly provided by the present application.

[0021] Figure 5 A second structural schematic view of the relay assembly provided by the present application.

[0022] Figure 6 A structural schematic view of the gripper provided by the present application.

[0023] Figure 7 A structural schematic view of the gripper structure and the conductive sheet provided by the present application.

[0024] Figure 8 A state schematic view of the gripper in the first position provided by the present application.

[0025] Figure 9 A state schematic view of the gripper in the second position provided by the present application.

[0026] MAIN ELEMENT SYMBOL EXPLANATION

[0027] 10, relay; 11, conducting piece; 11A, first conducting piece; 11B, second conducting piece; 111, via; 20, base; 20A, first base; 20B, second base; 21, support block; 211, through hole; 22, connecting block; 23, movement space; 30, gripper; 30A, first gripper; 30B, second gripper; 31, rod part; 311, conducting end; 312, threaded surface; 32, cap part; 33, first limiting part; 34, second limiting part; 40, gripper structure; 40A, first gripper structure; 40B, second gripper structure; 100, relay assembly; 200, box body; 201, accommodating cavity; 202, box cover; 300, insulating box; 301, accommodating cavity; 302, window; 303, box cover; 400, conducting row; 400A, first conducting row; 400B, second conducting row. DETAILED DESCRIPTION

[0028] In the description of the embodiments of the present application, the technical terms "first", "second" and the like are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0029] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be an element disposed in the middle. When an element is considered to be "disposed on" another element, it can be directly disposed on the other element or there can be an element disposed in the middle. In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, and it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The specification and claims of the present application and the above description of the drawings, the terms "include" and "have" and any variations thereof, are intended to cover non-exclusive inclusion.

[0031] Reference to“an embodiment” herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase“in one embodiment” in various places in the specification are not necessarily referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. As will be apparent to those of ordinary skill in the art, embodiments described herein can be combined with other embodiments.

[0032] The embodiment of the application provides a relay assembly, which is applied to a power distribution device. The power distribution device is electrically connected with an external power source, and the external power source can be a commercial power, an energy storage power source, a generator, a photovoltaic assembly, etc. The power distribution device is used for distributing electric energy of the external power source to a load, and the load can be a household power grid or an electrical equipment.

[0033] Figure 1 The power distribution device provided by the embodiment of the application is shown in the exploded view. Figure 2 The structure of the relay assembly and the insulation box provided by the embodiment of the application is shown in the schematic view. Figure 3 The relay assembly and the insulation box provided by the embodiment of the application are shown in the exploded view.

[0034] As shown in Figure 1 , Figure 2 and Figure 3 , the power distribution device comprises a box body 200, an insulation box 300, a conductive bar 400 and a relay assembly 100. The insulation box 300 is arranged in the box body 200, the insulation box 300 is provided with a receiving cavity 301, and one side of the insulation box 300 is provided with a window 302. The conductive bar 400 is arranged in the receiving cavity 301. The relay assembly 100 is arranged and fixed in the receiving cavity 301, the relay assembly 100 is electrically connected with the conductive bar 400, and the relay assembly 100 is partially exposed outside the receiving cavity 301 through the window 302.

[0035] For example, the box body 200 is made of metal, the box body 200 has a containing cavity 201, and the insulation box 300 is received and fixed in the containing cavity 201. The box body 200 is further provided with a box cover 202, and the box cover 202 is used for being fixed to the box body 200 and closing the containing cavity 201.

[0036] The insulation box 300 is made of insulation material, and the insulation box 300 is further provided with a box cover 303 arranged at the cavity opening of the accommodation cavity 301 to shield the accommodation cavity 301. The box cover 303 is provided with a window 302 penetrating through the box cover 303, so that part of the structure in the insulation box 300 can be exposed to the window 302. Among them, the relay assembly 100 can be inserted into or pulled out of the insulation box 300 through the window 302. In the example of the present application, the box cover 303 can also be provided with a plurality of circuit breakers, which partially shield the relay assembly 100, and the relay assembly 100 can be removed after the circuit breakers are removed from the box cover 303.

[0037] The conductive row 400 corresponds to the power distribution branch of the power distribution equipment, and the conductive row 400 is used to establish electrical connection between the relay assembly 100 and the power distribution branch. The conductive row 400 is arranged in the accommodation cavity 301, and one end of the conductive row 400 is provided with a connecting hole for cooperating and fixing with the relay assembly 100.

[0038] The conductive row 400 is arranged in pairs, and each pair of conductive rows 400 includes a first conductive row 400A and a second conductive row 400B. The first conductive row 400A is used to connect with the power distribution branch, and the second conductive row 400B is used to connect with the busbar. The relay assembly 100 can be connected between the first conductive row 400A and the second conductive row 400B, so that when the current on the busbar flows through the corresponding power distribution branch, it needs to pass through the relay assembly 100, and the intelligent control of the power distribution branch is realized by the relay assembly 100.

[0039] For example, the first conductive row 400A and the second conductive row 400B are made of metal materials such as copper. The first conductive row 400A and the second conductive row 400B are fixed in the insulation box 300, and the height of the first conductive row 400A is lower than the height of the second conductive row 400B. Among them, the height direction of the conductive row 400 is the Z-axis direction in the figure.

[0040] The first conductive row 400A and the second conductive row 400B have a spacing to accommodate the relay assembly 100. One end of the first conductive row 400A facing the second conductive row 400B is exposed to the insulation box 300 through the window 302 and is provided with a first connecting hole. One end of the second conductive row 400B facing the first conductive row 400A is exposed to the insulation box 300 through the window 302 and is provided with a second connecting hole. The first connecting hole and the second connecting hole are used to cooperate and fix with the relay assembly 100 through contact type conductive structures such as screws, bolts, pins, etc.

[0041] In the example of the present application, the conductive row 400 includes 12 pairs, and the 12 pairs of conductive rows 400 are arranged in two rows. In other embodiments, the number of conductive rows 400 and relay assemblies 100 can be adaptively adjusted according to the number of power distribution branches.

[0042] Figure 4 A first structural schematic diagram of a relay assembly provided in the present application. Figure 5 A second structural schematic diagram of a relay assembly provided in the present application.

[0043] As shown in Figure 3 , Figure 4 and Figure 5 , the relay assembly 100 comprises a relay 10 and a gripper structure 40. The relay 10 is arranged in a receiving cavity 301. The gripper structure 40 is arranged on the relay 10.

[0044] The relay 10 has a conductive sheet 11 made of metal material such as copper. The conductive sheet 11 is arranged on a side of the relay 10 facing the window 302, and is used to connect the conductive row 400. Specifically, the conductive sheet 11 is provided with a through hole 111, and the conductive sheet 11 is lapped on the conductive row 400, and the conductive sheet 11 and the conductive row 400 are fixed by a contact type conductive structure, and an electrical connection between the conductive sheet 11 and the conductive row 400 is established.

[0045] In the example of the present application, each relay 10 has two conductive sheets 11, which are spaced apart and have an included angle with the insertion direction of the relay 10. The two conductive sheets 11 include a first conductive sheet 11A and a second conductive sheet 11B, the first conductive sheet 11A is used to connect the first conductive row 400A, and the second conductive sheet 11B is used to connect the second conductive row 400B. For example, the first conductive sheet 11A and the second conductive sheet 11B are spaced apart along the X-axis direction in the drawing, and the insertion direction of the relay 10 is parallel to the Z-axis direction in the drawing.

[0046] The first conductive sheet 11A and the second conductive sheet 11B are both provided with a through hole 111. The first conductive sheet 11A can be lapped on one side of the first conductive row 400A and fixed by the through hole 111 and the first connecting hole of the first conductive row 400A. The second conductive sheet 11B can be lapped on one side of the second conductive row 400B and fixed by the through hole 111 and the second connecting hole of the second conductive row 400B.

[0047] The gripper structure 40 is arranged on the conductive sheet 11, and the gripper structure 40 is located on the side of the conductive sheet 11 away from the conductive row 400. The gripper structure 40 is exposed to the receiving cavity 301 through the window 302.

[0048] Thus, when the relay 10 is fixed in the insulation box 300, the gripper structure 40 can be exposed outside the insulation box 300 from the window 302. When the relay 10 needs to be pulled out, the staff can directly apply force to the gripper structure 40 from the outside of the insulation box 300 to pull out the relay 10, which reduces the constraints of narrow space on plugging and unplugging operation, makes it easier to apply force to the relay 10 to pull it out, and makes the operation simpler and improves the disassembly efficiency.

[0049] In the examples of the present application, the gripper structure 40 has at least two, and the at least two gripper structures 40 include a first gripper structure 40A and a second gripper structure 40B, the first gripper structure 40A is arranged on the first base 20A, and the second gripper structure 40B is arranged on the second base 20B, so that the first gripper structure 40A and the second gripper structure 40B are distributed at intervals.

[0050] When the relay 10 needs to be pulled out, force can be applied to the first gripper structure 40A and the second gripper structure 40B respectively to simultaneously pull out the first conductive sheet 11A and the second conductive sheet 11B of the relay 10, which improves the force effect of the relay 10, makes the relay 10 easier to pull out, and can make the first conductive sheet 11A and the second conductive sheet 11B more balanced in force when pulled out, reducing damage to the relay 10.

[0051] In some embodiments, the gripper structure 40 includes a base 20 and a gripper 30. The base 20 is arranged on the relay 10, and the gripper 30 is arranged on the base 20.

[0052] For example, the base 20 is arranged on the conductive sheet 11, and the base 20 is located on the side of the conductive sheet 11 away from the conductive row 400. The gripper 30 is arranged on the base 20, and the gripper 30 is exposed outside the receiving cavity 301 through the window 302. In this way, the base 20 can support the gripper 30, so that the gripper 30 can be relatively fixed with the conductive sheet 11 of the relay 10.

[0053] Specifically, the first gripper structure 40A includes a first base 20A and a first gripper 30A, the first base 20A is arranged on the first conductive sheet 11A, and the first gripper 30A is arranged on the first base 20A. The second gripper structure 40B includes a second base 20B and a second gripper 30B, the second base 20B is arranged on the second conductive sheet 11B, and the second gripper 30B is arranged on the second base 20B.

[0054] Figure 6 The structure diagram of the gripper provided in the present application is provided. Figure 7 The structure diagram of the gripper structure and the conductive sheet provided in the present application is provided.

[0055] As Figure 6 and Figure 7As shown, in some embodiments, the gripper 30 includes a rod 31 and a cap 32. The rod 31 is connected to the base 20, and the cap 32 is disposed at the end of the rod 31 away from the base 20. The diameter of the cap 32 is larger than the diameter of the rod 31. Exemplarily, the rod 31 and the cap 32 are integrally formed from a metal material such as copper. The cross-section of the rod 31 is circular, and the side of the cap 32 away from the rod 31 is provided with a slot.

[0056] Understandably, the cap 32 increases the contact area for the worker's grip, improves the overall force-bearing effect of the gripper 30, and facilitates the removal of the relay 10. The slot in the cap 32 can be used to connect other tools such as screwdrivers.

[0057] In some embodiments, the gripper 30 is movably disposed on the base 20, and the gripper 30 has a conductive end 311. Exemplarily, the end of the rod 31 away from the cap 32 forms the conductive end 311. The rod 31 passes through the base 20 and is movable relative to the base 20 and the conductive sheet 11 in a first direction.

[0058] Figure 8 A schematic diagram showing the gripper provided in this application in the first position. Figure 9 A schematic diagram showing the gripper provided in this application in the second position.

[0059] like Figure 8 and Figure 9 As shown, when the gripper 30 moves along the first direction and approaches the conductive sheet 11 to the first position, the conductive end 311 of the gripper 30 passes through the through hole 111 and is connected to the conductive busbar 400, so that the conductive sheet 11 is electrically connected to the conductive busbar 400.

[0060] When the gripper 30 moves away from the conductive sheet 11 to the second position along the second direction, the conductive end 311 of the gripper 30 can disengage from the conductive busbar 400. The first direction is opposite to the second direction.

[0061] In the examples of this application, the first direction and the second direction correspond to the insertion and removal directions of the relay 10, respectively. The first direction is consistent with the insertion direction of the relay 10 during installation, and is exemplified by the negative direction of the Z-axis in the illustration. The second direction is consistent with the removal direction of the relay 10 during disassembly, and is exemplified by the positive direction of the Z-axis in the illustration.

[0062] Specifically, when the gripper 30 is in the first position, the conductive end 311 passes through the through hole 111 of the conductive sheet 11 and is inserted into the connection hole of the conductive busbar 400, so that an electrical connection is established between the conductive sheet 11, the conductive end 311 and the conductive busbar 400. When the gripper 30 is in the second position, the conductive end 311 is disengaged from the connection hole of the conductive busbar 400.

[0063] When installing the relay 10, the gripper 30 can be moved to the first position along the first direction, so that the gripper 30 establishes the electrical connection between the conductive sheet 11 and the conductive strip 400 through the conductive end 311. In this way, the gripper 30 can be used as a gripping structure when the relay 10 needs to be pulled out, and can be used as a contact type conductive structure when the relay 10 does not need to be pulled out, having multiple functions.

[0064] In some embodiments, the conductive end 311 of the gripper 30 is provided with a threaded surface 312 on the peripheral side. When the gripper 30 is in the first position, the conductive end 311 is inserted into the via hole 111 of the conductive sheet 11, and is screwed to the conductive strip 400, so as to establish the electrical connection between the conductive sheet 11, the conductive end 311 and the conductive strip 400.

[0065] In this way, when installing the relay 10, the gripper 30 can be first moved along the first direction through the conductive sheet 11, and then the gripper 30 is screwed forward, so that the conductive end 311 of the gripper 30 is screwed to the conductive strip 400. When disassembling the relay 10, the gripper 30 is first screwed in the reverse direction, so that the conductive end 311 of the gripper 30 is separated from the conductive strip 400 and moves along the second direction, and then the gripper 30 is forced to pull out the relay 10.

[0066] It is worth noting that the conductive end 311 and the conductive strip 400 in the embodiment are connected in a threaded manner, and in other embodiments, the conductive end 311 and the conductive strip 400 can also be connected in a manner such as a clamping fit, an interference fit, a clearance fit, etc., as long as the electrical connection between the conductive end 311, the conductive sheet 11 and the conductive strip 400 can be established, and the present application does not limit this.

[0067] As shown in FIGS. Figure 7 , Figure 8 and Figure 9 , in some embodiments, the gripper 30 is provided with a first limiting portion 33, and the first limiting portion 33 moves synchronously with the gripper 30.

[0068] The base 20 is provided with a through hole 211, and the base 20 and the conductive sheet 11 are provided with an activity space 23. The gripper 30 is inserted into the through hole 211, and the first limiting portion 33 is arranged in the activity space 23, and the activity space 23 is used to limit the movement distance of the first limiting portion 33.

[0069] When the gripper 30 moves along the first direction or the second direction, the first limiting portion 33 moves synchronously along the first direction or the second direction in the activity space 23. The activity space 23 limits the movement stroke range of the gripper 30 as a whole by limiting the movement distance of the first limiting portion 33, preventing the gripper 30 from moving too much or not moving enough, etc.

[0070] Thus, the handle 30 forms a loose structure, and the handle 30 will not be separated from the base 20 even if it is separated from the conductive row 400. The staff can take the relay 10 by holding the handle 30.

[0071] In some embodiments, the first limiting part 33 is annularly sleeved on the handle 30, and the outer ring diameter of the first limiting part 33 is greater than the hole diameter of the through hole 211.

[0072] Thus, the first limiting part 33 forms a limiting structure protruding in the radial direction on the side of the handle 30. When the handle 30 moves away from the conductive sheet 11 to the second position in the second direction, the first limiting part 33 abuts against the base 20 in the second direction.

[0073] For example, the first limiting part 33 is a snap ring structure, which can be sleeved and fixed on the middle part of the rod part 31, or the first limiting part 33 can be integrally formed with the rod part 31. When the handle 30 is in the second position, the first limiting part 33 abuts against the base 20 in the second direction to prevent the handle 30 from continuing to move in the second direction relative to the base 20, achieving the limiting effect.

[0074] Thus, when the handle 30 moves in the second direction under the action of the pulling-out action, the handle 30 can drive the base 20 to move in the second direction synchronously through the first limiting part 33, and further drive the relay 10 to move in the second direction.

[0075] In some embodiments, the outer ring diameter of the first limiting part 33 is greater than the hole diameter of the via hole 111. When the handle 30 moves to the first position, the first limiting part 33 abuts against the conductive sheet 11 away from the conductive row 400 in the first direction. Thus, under the abutting action of the first limiting part 33, the conductive sheet 11 can be in close contact with the conductive row 400, maintaining the stability of the electrical connection between the conductive sheet 11 and the conductive row 400.

[0076] In some embodiments, the conductive end 311 of the handle 30 is provided with a second limiting part 34, the second limiting part 34 is annularly sleeved on the handle 30, the outer ring diameter of the second limiting part 34 is greater than the hole diameter of the through hole 211, and the outer ring diameter of the second limiting part 34 is smaller than the outer ring diameter of the first limiting part 33. The side of the second limiting part 34 is provided with a threaded surface 312.

[0077] For example, the second limiting part 34 is located on the side of the first limiting part 33 away from the cap part 32. The second limiting part 34 is an annular protruding structure, and the second limiting part 34 is integrally formed with the rod part 31. The second limiting part 34 protrudes from the side of the conductive end 311 to form an annular distribution around the conductive end 311.

[0078] Thus, the second limiting portion 34 forms a protruding limiting structure along the radial direction of the conductive end 311. When the gripper 30 is in the first position, the second limiting portion 34 is arranged in the through hole 111 of the conductive sheet 11 and is screwed to the conductive row 400.

[0079] Thus, when the relay 10 is installed, the gripper 30 can be screwed in the forward direction, so that the second limiting portion 34 of the gripper 30 is screwed to the conductive row 400, and the gripper 30 moves in the first direction under the action of the screwing. When the relay 10 is disassembled, the gripper 30 can be screwed in the reverse direction, so that the second limiting portion 34 of the gripper 30 is separated from the conductive row 400, and the gripper 30 moves in the second direction under the action of the screwing.

[0080] It can be understood that, by arranging the second limiting portion 34 at the end of the rod portion 31, the contact area between the conductive end 311 and the conductive row 400 can be increased, and the electrical connection stability can be improved.

[0081] When the gripper 30 is in the second position, the second limiting portion 34 is located on the side of the first limiting portion 33 away from the base 20, which supports the first limiting portion 33 and improves the structural strength of the first limiting portion 33 to prevent damage to the first limiting portion 33. Moreover, by using the loose screw structure of the gripper 30, the gripper 30 can be prevented from falling off after being screwed out of the conductive row 400 when the relay 10 is disassembled, which facilitates the disassembly and assembly operations.

[0082] In some embodiments, the base 20 includes a support block 21 and a connecting block 22. The support block 21 has a through hole 211 arranged at the middle portion thereof, and the connecting block 22 is arranged at the side edge of the support block 21 and has an included angle with the support block 21. The connecting block 22 is connected to the conductive sheet 11 away from the support block 21, so that the support block 21, the connecting block 22 and the conductive sheet 11 form an activity space 23 therebetween. For example, the number of the connecting blocks 22 is two, and the two connecting blocks 22 are arranged at the two side edges of the support block 21, so that the base 20 has an overall arc shape and the arc opening of the base 20 faces the conductive sheet 11, so that the base 20 and the conductive sheet 11 form the activity space 23 therebetween. The base 20 is integrally formed by using a metal material such as copper, and the base 20 is fixedly welded to the conductive sheet 11.

[0083] Thus, the distance between the support block 21 and the conductive sheet 11 limits the movement distance of the gripper 30. When the gripper 30 moves in the first direction to the position where the first limiting portion 33 abuts against the conductive sheet 11, the gripper 30 is in the first position. When the gripper 30 moves in the second direction to the position where the first limiting portion 33 abuts against the support block 21 in the second direction, the gripper 30 is in the second position.

[0084] As Figure 3 , Figure 5 ,Figure 8 and Figure 9 For the convenience of understanding, the following describes the disassembly mode of the relay 10 with a specific example.

[0085] When installing the relay 10, first insert the relay 10 into the receiving cavity 301, so that the conductive sheet 11 is overlapped on the corresponding conductive strip 400. Then, push the gripper 30 to move in the first direction to the first position, so that the conductive end 311 of the gripper 30 penetrates through the conductive sheet 11 to contact the conductive strip 400. Then, screw the gripper 30 in the forward direction, the conductive end 311 of the gripper 30 continues to advance in the first direction under the action of the threaded cooperation, and is threadedly connected with the conductive strip 400, until the first limiting portion 33 abuts against the conductive sheet 11 in the first direction, so that the conductive sheet 11 is fixed and electrically connected with the conductive strip 400.

[0086] When disassembling the relay 10, first unscrew the gripper 30 in the reverse direction, the conductive end 311 of the gripper 30 gradually moves away from the conductive strip 400 in the second direction under the action of the threaded cooperation, until the conductive end 311 of the gripper 30 is separated from the conductive strip 400. Then, pull the gripper 30 to move in the second direction to the second position, so that the first limiting portion 33 abuts against the base 20 in the second direction. Then, continue to pull the gripper 30 to move in the second direction, and drive the relay 10 from the receiving cavity 301 by the gripper 30 and the base 20.

[0087] It can be understood that the conductive sheet 11, the base 20, the gripper 30, and the conductive strip 400 described in the above disassembly mode description can be the first conductive sheet 11A, the first base 20A, the first gripper 30A, and the first conductive strip 400A, or the second conductive sheet 11B, the second base 20B, the second gripper 30B, and the second conductive strip 400B, and the corresponding relationship can be seen from the related description in the foregoing embodiments, which will not be described herein again.

[0088] The embodiment of the present application also provides a power distribution device.

[0089] As shown in Figure 1 , Figure 2 and Figure 3 The power distribution device comprises a box body 200, an insulating box 300, and the relay assembly 100 in any one of the foregoing embodiments, wherein the insulating box 300 is arranged in the box body 200. The insulating box 300 is provided with a receiving cavity 301, the insulating box 300 is provided with a box cover 303, the box cover 303 is arranged on the cavity opening of the receiving cavity 301, and the box cover 303 is provided with a window 302.

[0090] The relay assembly 100 comprises a relay 10 and a gripper structure 40. The relay 10 is arranged in the accommodating cavity 301, and the relay 10 has a conductive sheet 11 for connecting the conductive row 400, the conductive sheet 11 being located on a side of the relay 10 facing the window 302. The gripper structure 40 is arranged on the conductive sheet 11, and the gripper structure 40 is located on a side of the conductive sheet 11 facing away from the conductive row 400. The gripper structure 40 is exposed to the accommodating cavity 301 through the window 302.

[0091] The implementation principle and beneficial effects of the power distribution device provided by the embodiments of the present application can be seen from the foregoing related descriptions of the embodiments, and the present application will not be described herein again.

[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application rather than limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A relay assembly characterized by, The utility model provides an insulating box for power distribution equipment, which is provided with a receiving cavity, and one side of the insulating box is provided with a window. A relay is arranged in the receiving cavity, and the relay has a conductive sheet for connecting a conductive row and located on a side of the relay facing the window. A gripping structure is arranged on the conductive sheet and located on a side of the conductive sheet away from the conductive row, and the gripping structure is exposed to the receiving cavity through the window.

2. The relay assembly of claim 1, wherein, The gripping structure comprises: a base arranged on the conductive sheet and located on a side of the conductive sheet away from the conductive row; a gripping member arranged on the base and exposed to the receiving cavity through the window.

3. The relay assembly of claim 2, wherein, The gripping member is movably arranged on the base, the conductive sheet is provided with a through hole, and the gripping member has a conductive end. When the gripping member moves towards the conductive sheet to a first position in a first direction, the conductive end of the gripping member penetrates through the through hole and is connected to the conductive row, so that the conductive sheet is electrically connected to the conductive row.

4. The relay assembly of claim 3, wherein, The gripping member is provided with a first limiting part which moves synchronously with the gripping member. The base is provided with a through hole, and an active space is arranged between the base and the conductive sheet; the gripping member penetrates through the through hole, and the first limiting part is arranged in the active space, and the active space is used for limiting the movement distance of the first limiting part.

5. The relay assembly of claim 4, wherein, The first limiting part is annularly arranged on the gripping member, and the outer ring diameter of the first limiting part is greater than the hole diameter of the through hole. When the gripping member moves away from the conductive sheet to a second position in a second direction, the first limiting part abuts against the base in the second direction; the first direction is opposite to the second direction.

6. The relay assembly of claim 5, wherein, The outer ring diameter of the first limiting part is greater than the hole diameter of the through hole. When the gripping member moves to the first position, the first limiting part abuts against a side of the conductive sheet away from the conductive row in the first direction.

7. The relay assembly of claim 6, wherein, The conductive end of the gripping member is provided with a second limiting part which is annularly arranged on the gripping member, the outer ring diameter of the second limiting part is greater than the hole diameter of the through hole, the outer ring diameter of the second limiting part is smaller than the outer ring diameter of the first limiting part, and the circumferential side of the second limiting part is provided with a threaded surface.

8. The relay assembly of claim 4, wherein, The base comprises a support block and a connecting block, the connecting block is arranged on a side of the support block, and the support block and the connecting block have an included angle therebetween; The connecting block is connected to the conductive sheet on a side away from the support block, so that an active space is formed between the support block, the connecting block and the conductive sheet.

9. The relay assembly of claim 2, wherein, The gripping member comprises a rod part and a cap part, the rod part is connected to the base, the cap part is arranged on an end of the rod part away from the base, and the diameter of the cap part is greater than the diameter of the rod part.

10. The relay assembly of any one of claims 1 to 9, wherein, The conductive sheet comprises a first conductive sheet and a second conductive sheet, the first conductive sheet and the second conductive sheet are arranged at intervals, and the direction of interval arrangement has an included angle with the plugging direction of the relay. The gripper structure comprises a first gripper structure and a second gripper structure, the first gripper structure is arranged on the first conductive sheet, and the second gripper structure is arranged on the second conductive sheet.

11. A power distribution apparatus, comprising: The relay assembly comprises a box body, an insulation box and a relay assembly, wherein the insulation box is arranged in the box body, the insulation box is provided with a receiving cavity, the insulation box is provided with a box cover, the box cover covers the cavity opening of the receiving cavity, and the box cover is provided with a window; The relay assembly comprises: A relay is arranged in the receiving cavity, the relay has a conductive sheet, the conductive sheet is used for connecting a conductive row, and the conductive sheet is located on one side of the relay facing the window; A gripper structure is arranged on the conductive sheet and located on the side of the conductive sheet away from the conductive row, and the gripper structure is exposed to the receiving cavity through the window.

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