Soft starter

Abstract

The utility model belongs to the technical field of low-voltage electric appliances, and discloses a soft starter, which comprises a bottom shell, a wiring module, a supporting plate and a mainboard, and is characterized in that the bottom shell is provided with a first accommodating groove along a first direction; the wiring module is arranged in the first accommodating groove; the two supporting plates are arranged in the second direction at intervals, and the supporting plates are arranged at the ends of the first containing grooves; the mainboard is arranged on the supporting plate, and the mainboard and the wiring module are arranged at an interval. According to the soft starter provided by the utility model, the mainboard is integrated on the bottom shell, a wire between the wiring module and the mainboard is prevented from obstructing disassembly and assembly of the soft starter, the supporting plates are arranged at the end part of the first accommodating groove, and the mainboard is erected through the two supporting plates, so that the mainboard is convenient to install, the mainboard is stably fixed, and the mainboard and the wiring module are ensured to be spaced; and installation interference is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliances, in particular to a soft starter. Background Art

[0002] A soft starter is a motor control device that integrates motor soft start, soft stop, light load energy saving and multiple protection functions. Existing soft starters usually install a wiring module with a conductive bar in the bottom shell and fix the main board in the top shell. The wires connecting the wiring module and the main board will hinder the disassembly and assembly of the soft starter, affecting the disassembly and assembly efficiency of the soft starter, and may squeeze or break the wires when disassembling the soft starter. Utility Model Content

[0003] The utility model aims to provide a soft starter, which can effectively improve the efficiency of disassembly and assembly and prevent the wire from being damaged.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] A soft starter is provided, comprising:

[0006] The bottom shell is provided with a first receiving groove along a first direction;

[0007] A wiring module is arranged in the first receiving groove;

[0008] Two support plates are provided at intervals along the second direction, and the support plates are provided at the ends of the first containing groove;

[0009] The mainboard is arranged on the supporting plate, and the mainboard and the wiring module are arranged at a distance.

[0010] Optionally, at least one limiting groove is provided on one side of the support plate along the first direction toward the bottom of the first accommodating groove;

[0011] The bottom shell is provided with supporting columns corresponding to the limiting grooves in a one-to-one manner in the first accommodating groove, and the supporting columns are inserted into the corresponding limiting grooves.

[0012] Optionally, a positioning groove is provided on the support plate, and the corresponding side edge of the main board is arranged in the positioning groove.

[0013] Optionally, the wiring module includes a thyristor, the support plate is provided with a wire harness slot, and a pulse line connecting the main board and the thyristor is passed through the wire harness slot.

[0014] Optionally, two outer side surfaces of the bottom shell along the second direction are respectively provided with terminal blocks, and terminal covers are clamped on the terminal blocks;

[0015] The wiring module includes an input conductive bar and an output conductive bar that are arranged opposite to each other along the second direction. The input conductive bar and the output conductive bar are respectively passed through the bottom shell along the second direction and extend to between the terminal block and the terminal cover on the corresponding side.

[0016] Optionally, the terminal block is provided with first clamping parts on both sides along the third direction, and a positioning plate is provided on one side of the terminal block along the first direction toward the terminal cover;

[0017] The terminal cover comprises a main cover plate extending along a third direction, a clamping plate is respectively provided at both ends of the main cover plate, a second clamping portion is respectively provided on one side of the two clamping plates facing each other, and a first stopper and a second stopper are provided on one side of the main cover plate facing the terminal block along the first direction, and the first stopper and the second stopper are spaced apart along the second direction; wherein,

[0018] The terminal block is located between the two clamping plates, and the first clamping portion is clamped with the corresponding second clamping portion. The positioning plate is located between the first stopper and the second stopper, and the first stopper and the second stopper are respectively abutted against corresponding sides of the positioning plate along the second direction.

[0019] Optionally, the wiring module includes a heat sink;

[0020] The soft starter also includes a grounding plate, which includes a first bending portion and a second bending portion that are perpendicular to each other, the first bending portion extends along a first direction and is connected to one side of the heat sink along a third direction, and the second bending portion extends along a second direction and is inserted outside the first accommodating groove.

[0021] Optionally, it also includes a top shell arranged opposite to the bottom shell along the first direction, the top shell is provided with a second accommodating groove along the first direction, the top shell is snap-connected with the bottom shell, and an accommodating cavity is formed between the first accommodating groove and the second accommodating groove, the wiring module, the support plate and the main board are all arranged in the accommodating cavity.

[0022] Optionally, it further comprises a power supply module electrically connected to the mainboard, wherein the power supply module is used to be electrically connected to an external power supply;

[0023] The top shell is provided with a connecting column in the second receiving groove, and the power supply module is arranged on the connecting column.

[0024] Optionally, a mounting groove is provided on the top shell, and a top shell clamping hole is provided on one of two sides of the mounting groove along the second direction, and a limiting protrusion is provided on the other side;

[0025] The soft starter also includes a display box, one of the two sides of the display box along the second direction is provided with a display box buckle, and the other side is provided with a limiting groove, and the display box buckle is engaged with the top shell clamping hole, and the limiting protrusion is arranged in the limiting groove.

[0026] Beneficial effects:

[0027] The soft starter provided by the utility model integrates the mainboard on the bottom shell to prevent the wires between the wiring module and the mainboard from interfering with the disassembly and assembly of the soft starter. The support plate is arranged at the end of the first receiving groove, and the mainboard is supported by two support plates to facilitate the installation of the mainboard, so that the mainboard is fixed and stable, and the mainboard is ensured to be spaced from the wiring module to avoid installation interference. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of a part of the soft starter provided by the utility model;

[0029] Figure 2 It is a structural schematic diagram of the bottom shell provided by the utility model;

[0030] Figure 3 This is a structural schematic diagram of a support plate provided by the utility model from one perspective;

[0031] Figure 4 This is a structural schematic diagram of another viewing angle of the support plate provided by the utility model;

[0032] Figure 5 It is a structural schematic diagram of the soft starter provided by the utility model;

[0033] Figure 6 It is a structural schematic diagram of another part of the soft starter provided by the utility model;

[0034] Figure 7 It is a structural schematic diagram of the top shell provided by the utility model;

[0035] Figure 8 This is a structural schematic diagram of a display box provided by the utility model from one viewing angle;

[0036] Fig. 9 This is a schematic structural diagram of another viewing angle of the display box provided by the utility model;

[0037] Fig.10 It is a schematic diagram of the structure inside the bottom shell provided by the utility model;

[0038] Fig.11 It is a structural schematic diagram of another part of the soft starter provided by the utility model;

[0039] Fig.12 It is a structural schematic diagram of the terminal cover provided by the utility model;

[0040] Fig.13 The utility model provides Figure 2 A magnified view of the structure in FIG.

[0041] In the figure:

[0042] 100, bottom shell; 101, first accommodating groove; 102, supporting column; 103, bottom shell clamping hole; 104, first through hole; 105, second through hole; 106, recess; 107, second opening groove; 108, fan groove; 109, positioning column; 110, shell body; 120, bottom plate; 130, terminal block; 131, terminal groove; 132, first clamping part; 1321, first inclined side; 133, positioning plate; 134, groove;

[0043] 200, wiring module; 210, heat sink; 220, thyristor; 230, input conductive bar; 240, output conductive bar; 250, mutual inductor; 260, filter board;

[0044] 300, support plate; 301, limit slot; 302, positioning slot; 303, cable duct;

[0045] 400, motherboard;

[0046] 500, top shell; 501, second receiving groove; 502, top shell inverted; 503, mounting groove; 504, top shell clamping hole; 505, limiting protrusion; 510, connecting column;

[0047] 600, power supply module;

[0048] 700, display box; 701, display box inverted; 702, limiting groove; 703, raised part; 710, display screen; 720, operation button; 730, indicator light;

[0049] 800, terminal cover; 810, main cover plate; 820, clamping plate; 821, second clamping portion; 8211, second inclined side surface; 831, first stopper; 832, second stopper;

[0050] 900, grounding plate; 910, first bending portion; 920, second bending portion; 930, first opening slot;

[0051] 1001. Fan; 1002. Baffle. DETAILED DESCRIPTION

[0052] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0053] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0055] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0056] Reference Figures 1 to 4 As shown, this embodiment provides a soft starter, which includes a bottom shell 100 , a wiring module 200 , a support plate 300 and a main board 400 .

[0057] Specifically, the bottom case 100 is provided with a first receiving groove 101 along the first direction; the wiring module 200 is provided in the first receiving groove 101; two support plates 300 are provided at intervals along the second direction, and the support plates 300 are provided at the end of the first receiving groove 101; the main board 400 is provided on the support plate 300, and the main board 400 is provided at intervals from the wiring module 200. Figure 1The a direction in the figure may be a first direction, which may be a height direction of the soft starter; the b direction may be a second direction, which may be a length direction of the soft starter; and the c direction may be a third direction, which may be a width direction of the soft starter.

[0058] In this embodiment, the mainboard 400 is integrated on the bottom shell 100 to prevent the wires between the wiring module 200 and the mainboard 400 from interfering with the disassembly and assembly of the soft starter. The support plate 300 is arranged at the end of the first receiving groove 101, and the mainboard 400 is supported by two support plates 300 to facilitate the installation of the mainboard 400, so that the mainboard 400 is fixed and stable, and the mainboard 400 is ensured to be spaced from the wiring module 200 to avoid installation interference.

[0059] Exemplarily, the two support plates 300 are respectively located at corresponding sides of the first receiving groove 101 along the second direction to prevent interference between the support plates 300 and the wiring module 200 and the main board 400 .

[0060] Exemplarily, the support plate 300 is provided with at least one limiting groove 301 along the first direction toward the bottom of the first receiving groove 101; the bottom shell 100 is provided with a support column 102 corresponding to the limiting groove 301 in the first receiving groove 101, and the support column 102 is inserted into the corresponding limiting groove 301 to achieve the positioning and installation of the support plate 300, which is stable and reliable. Exemplarily, the projection of the first receiving groove 101 along the first direction can be a rectangle, and the support plate 300 is provided with a limiting groove 301 on both sides along the third direction, that is, the support column 102 is provided with four and respectively arranged at the corners corresponding to the first receiving groove 101, so as to further prevent installation interference and improve the compactness of the soft starter. Exemplarily, the support plate 300 can be fixed by passing the limiting groove 301 through the first screw connection and threading it with the corresponding support column 102, which is convenient and reliable.

[0061] Exemplarily, a positioning groove 302 is provided on the support plate 300 , and the corresponding side edge of the main board 400 is arranged in the positioning groove 302 . The support plate 300 positions the installation of the main board 400 through the positioning groove 302 , which effectively improves the assembly efficiency of the soft starter.

[0062] For example, the main board 400 can be fixed by passing the second screw member through the main board 400 and threadedly connected to the support plate 300, which is convenient and reliable.

[0063] In this embodiment, refer to Figure 2 and Figure 5As shown, the soft starter further includes a top shell 500 arranged opposite to the bottom shell 100 along the first direction, the top shell 500 is provided with a second receiving groove 501 along the first direction, the top shell 500 is snap-fitted with the bottom shell 100, and an receiving cavity is formed between the first receiving groove 101 and the second receiving groove 501, and the wiring module 200, the support plate 300 and the main board 400 are all arranged in the receiving cavity. In this embodiment, the top shell 500 is snap-fitted with the bottom shell 100, which facilitates the disassembly and assembly of the soft starter.

[0064] For example, at least two bottom shell clamping holes 103 are respectively provided on both sides of the bottom shell 100 along the third direction, and the top shell 500 is provided with top shell undercuts 502 corresponding to the bottom shell clamping holes 103, so as to facilitate the disassembly and assembly between the bottom shell 100 and the top shell 500, and effectively ensure the sealing between the bottom shell 100 and the top shell 500. Of course, the bottom shell clamping holes 103 and the top shell undercuts 502 can also be set to other numbers, which is not limited in this application.

[0065] In this embodiment, refer to Figure 6 As shown, the soft starter also includes a power supply module 600 electrically connected to the mainboard 400, and the power supply module 600 is used to be electrically connected to an external power supply. In this embodiment, when the wiring module 200 is electrically connected to a 220V voltage, the mainboard 400 can be powered by the wiring module 200; when the wiring module 200 is electrically connected to a 690V voltage, the mainboard 400 can be powered by the power supply module 600, which is suitable for domestic and foreign use environments and improves applicability.

[0066] Specifically, the top shell 500 is provided with a connecting column 510 in the second receiving groove 501, and the power supply module 600 is provided on the connecting column 510. Exemplarily, the power supply module 600 can be fixed in the second receiving groove 501 by a fastener passing through the power supply module 600 and being threadedly connected with the connecting column 510. Among them, the top shell 500 is provided with more than two connecting columns 510 in the second receiving groove 501 to ensure that the power supply module 600 is fixed reliably.

[0067] In this embodiment, refer to Figure 5 , Figures 7 to 9 As shown, the soft starter further includes a display box 700 , on which a display screen 710 , operation buttons 720 and an indicator light 730 are provided.

[0068] Specifically, the top case 500 is provided with a mounting groove 503, one of the two sides of the mounting groove 503 along the second direction is provided with a top case clamping hole 504, and the other side is provided with a limiting protrusion 505; the display box 700 is provided with a display box buckle 701 on one of the two sides along the second direction, and a limiting groove 702 is provided on the other side, and the display box buckle 701 is clamped with the top case clamping hole 504, and the limiting protrusion 505 is arranged in the limiting groove 702, so as to realize the positioning of the display box 700 in the second direction. Among them, a plurality of limiting protrusions 505 and limiting grooves 702 can be provided in a one-to-one correspondence. During assembly, firstly, the display box 700 is tilted relative to the top shell 500 and obliquely inserted into the installation groove 503 so that the limiting protrusion 505 is placed in the limiting groove 702, and then the display box 700 is laid flat so that the display screen 710 is buckled and engaged in the top shell clamping hole 504 for easy assembly; during disassembly, the display box buckle 701 in the top shell clamping hole 504 is pressed in the second accommodating groove 501 to disengage the display box buckle 701 from the top shell clamping hole 504 for easy disassembly.

[0069] Specifically, the display box 700 is provided with protrusions 703 on both sides along the third direction, and the protrusions 703 are respectively abutted against the groove walls on the corresponding sides of the installation groove 503 to realize the positioning of the display box 700 along the third direction, so as to ensure the stable and reliable installation of the display box 700 and effectively prevent the display box 700 from shaking. Among them, the protrusions 703 are in an inverted shape to facilitate pressing the display box 700 into the installation groove 503. Exemplarily, the display box 700 is provided with more than two protrusions 703 on both sides along the third direction to further prevent shaking.

[0070] In a feasible implementation, the mainboard 400 extends into the second receiving groove 501 , effectively reducing the risk of the wires connecting the power supply module 600 and the display box 700 to the mainboard 400 being crushed by the top shell 500 and the bottom shell 100 .

[0071] In this embodiment, refer to Fig.10 and Fig.11 As shown, the wiring module 200 includes a heat sink 210 and a conductive component disposed on the heat sink 210 . The conductive component includes a thyristor 220 and an input conductive bar 230 and an output conductive bar 240 disposed opposite to each other along the second direction. The thyristor 220 is fixed on the heat sink 210 .

[0072] Specifically, the heat sink 210 can be fixed to the bottom shell 100 by fasteners. Exemplarily, the bottom shell 100 may include a shell body 110 and a bottom plate 120 disposed at the bottom of the shell body 110, the shell body 110 and the bottom plate 120 are snap-fitted, and the shell body 110 and the bottom plate 120 are enclosed to form a first receiving groove 101. In this embodiment, the heat sink 210 can be passed through and locked in the shell body 110 at the bottom of the shell body 110, and then the bottom plate 120 is snap-fitted to the bottom of the shell body 110 for easy assembly.

[0073] Specifically, the conductive component further includes a mutual inductor 250 sleeved on the output conductive bar 240. Exemplarily, a plurality of conductive components, for example, three, may be provided at intervals along the third direction.

[0074] Specifically, the conductive assembly further includes a filter plate 260 disposed on the input conductive bar 230 and the output conductive bar 240 to achieve the purpose of current filtering. The filter plate 260 spans across all the input conductive bars 230 and the output conductive bars 240.

[0075] In a possible implementation, Figure 4 and Fig.10 As shown, the support plate 300 is provided with a wire harness groove 303, and the pulse wire (not shown) connecting the main board 400 and the thyristor 220 is passed through the wire harness groove 303. The wire harness is well placed, and when the soft starter is assembled, the pulse wire will not extend outside the accommodating cavity, effectively reducing the risk of the pulse wire being crushed by the top shell 500 and the bottom shell 100. In this embodiment, since the opening of the wire harness groove 303 is small, it is difficult for the pulse wire to escape after entering the wire harness groove 303.

[0076] Exemplarily, the number of the wiring slots 303 on the support plate 300 is the same as the number of the thyristors 220 , and the wiring slots 303 are arranged at intervals along the third direction to facilitate wiring arrangement.

[0077] Exemplarily, the projection of the beam slot 303 along the first direction is triangular, and the beam slot 303 is provided with a chamfer or rounded corner at the opening to facilitate squeezing the pulse line into the beam slot 303 .

[0078] In this embodiment, refer to Figure 2 , Figures 10 to 13As shown, the two outer sides of the bottom shell 100 along the second direction are respectively provided with terminal blocks 130, and the terminal cover 800 is clamped on the terminal block 130. The input conductive bar 230 and the output conductive bar 240 are respectively passed through the bottom shell 100 along the second direction and extend to between the terminal block 130 and the terminal cover 800 on the corresponding side. Among them, the terminal block 130 and the bottom shell 100 are an integral structure. In this embodiment, the corresponding conductive bar is supported by the terminal block 130 to facilitate the connection between the conductive bar and the external wire; the conductive bar is shielded by the terminal cover 800 to improve the safety of electricity use. In addition, the terminal block 130 is clamped with the terminal cover 800, which facilitates the assembly of the terminal cover 800 and effectively improves the assembly efficiency of the soft starter.

[0079] Specifically, the bottom shell 100 is provided with first through holes 104 corresponding to the input conductive bars 230 and second through holes 105 corresponding to the output conductive bars 240 . The input conductive bars 230 pass through the corresponding first through holes 104 to the outside of the first receiving groove 101 , and the output conductive bars 240 pass through the corresponding second through holes 105 to the outside of the first receiving groove 101 .

[0080] Specifically, the terminal block 130 is provided with a terminal slot 131, and the input conductive bar 230 and the output conductive bar 240 are respectively placed in the corresponding terminal slots 131. Among them, the slot bottom of the terminal slot 131 is provided with a locking nut (not shown). It can be understood that the input conductive bar 230 and the output conductive bar 240 extending out of the first receiving slot 101 are respectively provided with wiring holes and form terminal bodies with the corresponding locking nuts.

[0081] Specifically, the terminal block 130 is respectively provided with a first clamping portion 132 on both sides along the third direction, and a positioning plate 133 is provided on the side of the terminal block 130 facing the terminal cover 800 along the first direction; the terminal cover 800 includes a main cover plate 810 extending along the third direction, and clamping plates 820 are respectively provided at both ends of the main cover plate 810, and second clamping portions 821 are respectively provided on the sides of the two clamping plates 820 facing each other, and a first stop block 831 and a second stop block 832 are provided on the side of the main cover plate 810 facing the terminal block 130 along the first direction, and the first stop block 831 and the second stop block 832 are spaced apart along the second direction. The terminal block 130 is located between the two clamping plates 820, and the first clamping portion 132 is clamped with the corresponding second clamping portion 821 to realize the positioning of the terminal block 130 along the first direction and the third direction; the positioning plate 133 is located between the first stopper 831 and the second stopper 832, and the first stopper 831 and the second stopper 832 are respectively abutted against the corresponding sides of the positioning plate 133 along the second direction to realize the positioning of the terminal block 130 along the second direction and effectively prevent the terminal cover 800 from shaking. In this embodiment, the terminal cover 800 is clamped into or out of the terminal block 130 along the first direction, which is convenient for installation.

[0082] Exemplarily, a groove 134 is provided on one side of the terminal block 130 along the first direction toward the terminal cover 800 , the first stopper 831 extends into the groove 134 , and the second stopper 832 is located outside the groove 134 to clamp the positioning plate 133 .

[0083] Specifically, at least one block group is provided on the main cover plate 810, each block group may include a first block 831 and two second blocks 832, the first block 831 is located between the two second blocks 832 along the third direction, and the second block 832 is located along the second direction on the side of the first block 831 facing away from the bottom case 100. The second block 832 may separate adjacent conductive bars to improve safety.

[0084] Exemplarily, the first clamping portion 132 is configured as a clamping slot, the clamping slot is provided with a first inclined side surface 1321, the first inclined side surface 1321 is inclined toward the top of the terminal block 130, wherein the top of the terminal block 130 refers to the side of the terminal block 130 along the first direction toward the bottom shell 100 provided with the first receiving groove 101; the second clamping portion 821 is configured as a clamping protrusion, the clamping protrusion is provided with a second inclined side surface 8211, the second inclined side surface 8211 is in contact with the first inclined side surface 1321, effectively preventing the terminal cover 800 from sliding up and down along the first direction, and facilitating the removal of the terminal cover 800. Exemplarily, the projections of the clamping slot and the clamping protrusion along the second direction can both be right-angled trapezoids.

[0085] Exemplarily, the terminal cover 800 is provided on one side of the second direction facing away from the bottom shell 100 and protrudes from the terminal block 130 to further improve the safety of electricity use. The clamping plate 820 is provided on one side of the second direction facing away from the bottom shell 100 and protrudes from the terminal block 130, so that the clamping plate 820 can be easily moved to disengage the clamping protrusion from the clamping slot, thereby facilitating the removal of the terminal cover 800.

[0086] Exemplarily, chamfers or rounded corners are provided on both sides of the top of the terminal block 130 along the third direction to make way for the snap-in protrusions on the corresponding sides, so as to facilitate the assembly of the terminal cover 800 .

[0087] Exemplarily, the terminal cover 800 may be made of a transparent material to facilitate observation.

[0088] Exemplarily, the terminal cover 800 may be made of an elastic material to facilitate assembly and disassembly.

[0089] In this embodiment, refer to Figure 1 , Figure 2 and Fig.10As shown, the soft starter also includes a grounding sheet 900, and the grounding sheet 900 includes a first bending portion 910 and a second bending portion 920 that are perpendicular to each other. The first bending portion 910 extends along the first direction and is connected to one side of the heat sink 210 along the third direction, and the second bending portion 920 extends along the second direction and is inserted outside the first receiving groove 101, so that the grounding sheet 900 occupies a very small space in the first receiving groove 101, and is easy to assemble. It can be understood that the first bending portion 910 can be arranged perpendicular to the third direction, and the second bending portion 920 can be arranged perpendicular to the first direction, so as to occupy a smaller installation space and make the structure in the bottom shell 100 compact.

[0090] Exemplarily, one end of the first bending portion 910 away from the second bending portion 920 may be fixed to the heat sink 210 by a fastener.

[0091] Exemplarily, a groove bottom of the first receiving groove 101 may be provided with a clearance groove 106 , and the second bent portion 920 is disposed in the clearance groove 106 , so as to further improve the compactness of the structure in the bottom shell 100 .

[0092] Exemplarily, the end of the second bending portion 920 extending outside the first receiving groove 101 is provided with a first opening groove 930. In this embodiment, the bottom shell 100 is provided with second opening grooves 107 at four corners outside the first receiving groove 101, and the first opening groove 930 is arranged corresponding to one of the second opening grooves 107, so that grounding is achieved while installing the soft starter. The first opening groove 930 and the second opening groove 107 can both be set to a U shape.

[0093] In this embodiment, a fan 1001 is disposed on one side of the bottom housing 100 along the second direction, and the fan 1001 blows air to the heat dissipation element 210 to achieve the purpose of heat dissipation.

[0094] Exemplarily, the fan 1001 may be disposed on a side where the output conductive bar 240 extends out of the bottom casing 100 .

[0095] For example, to ensure the compact structure of the soft starter, a fan slot 108 for accommodating the fan 1001 may be provided on the bottom shell 100, and the fan slot 108 is connected to the first accommodating slot 101. At least one fan 1001, for example, two fans, may be installed in the fan slot 108. Specifically, a positioning column 109 corresponding to the mounting hole of the fan 1001 is provided in the fan slot 108 to realize the positioning of the fan 1001 along the first direction and the third direction.

[0096] Furthermore, a baffle 1002 may be provided at the end of the fan slot 108, and the baffle 1002 may be used to limit the fan 1001 so as to realize the positioning of the fan 1001 along the second direction. The baffle 1002 may be connected to the bottom shell 100 by a snap-fitting manner, thereby effectively improving the assembly efficiency of the soft starter. The second bent portion 920 of the grounding sheet 900 passes under the fan 1001 and the baffle 1002.

[0097] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A soft starter, characterized in that: include: The bottom shell (100) is provided with a first receiving groove (101) along a first direction; A wiring module (200) is arranged in the first containing groove (101); Two support plates (300) are provided at intervals along the second direction, and the support plates (300) are provided at the end of the first containing groove (101); A main board (400) is arranged on the support board (300), and the main board (400) and the wiring module (200) are arranged at a distance.

2. The soft starter according to claim 1, characterized in that: The support plate (300) is provided with at least one limiting groove (301) on one side thereof along the first direction toward the bottom of the first containing groove (101); The bottom shell (100) is provided with support columns (102) in one-to-one correspondence with the limiting grooves (301) in the first receiving groove (101), and the support columns (102) are inserted into the corresponding limiting grooves (301).

3. The soft starter according to claim 1, characterized in that: The support plate (300) is provided with a positioning groove (302), and the corresponding side edge of the main plate (400) is arranged in the positioning groove (302).

4. The soft starter according to claim 1, characterized in that: The wiring module (200) comprises a thyristor (220), the support plate (300) is provided with a wire harness groove (303), and a pulse wire connecting the main board (400) and the thyristor (220) is passed through the wire harness groove (303).

5. The soft starter according to claim 1, characterized in that: The bottom shell (100) is provided with terminal blocks (130) on two outer side surfaces along the second direction, respectively, and a terminal cover (800) is clamped on the terminal block (130); The wiring module (200) comprises an input conductive bar (230) and an output conductive bar (240) arranged opposite to each other along a second direction; the input conductive bar (230) and the output conductive bar (240) respectively penetrate the bottom shell (100) along the second direction and extend to between the terminal block (130) and the terminal cover (800) on the corresponding side.

6. The soft starter according to claim 5, characterized in that: The terminal block (130) is provided with first clamping portions (132) on both sides along the third direction, and a positioning plate (133) is provided on one side of the terminal block (130) along the first direction facing the terminal cover (800); The terminal cover (800) comprises a main cover plate (810) extending along a third direction, a clamping plate (820) is respectively provided at both ends of the main cover plate (810), a second clamping portion (821) is respectively provided on the side of the two clamping plates (820) facing each other, and a first stopper (831) and a second stopper (832) are provided on the side of the main cover plate (810) facing the terminal block (130) along the first direction, and the first stopper (831) and the second stopper (832) are spaced apart along the second direction; wherein, The terminal block (130) is located between the two clamping plates (820), and the first clamping portion (132) is clamped with the corresponding second clamping portion (821), the positioning plate (133) is located between the first stop block (831) and the second stop block (832), and the first stop block (831) and the second stop block (832) are respectively abutted against corresponding sides of the positioning plate (133) along the second direction.

7. The soft starter according to claim 1, characterized in that: The wiring module (200) comprises a heat sink (210); The soft starter also includes a grounding plate (900), the grounding plate (900) including a first bent portion (910) and a second bent portion (920) which are perpendicular to each other, the first bent portion (910) extending along a first direction and connected to one side of the heat sink (210) along a third direction, and the second bent portion (920) extending along a second direction and passing through the outside of the first accommodating groove (101).

8. The soft starter according to claim 1, characterized in that: The invention also comprises a top shell (500) arranged opposite to the bottom shell (100) along a first direction, the top shell (500) being provided with a second receiving groove (501) along the first direction, the top shell (500) being snap-connected with the bottom shell (100), and a receiving cavity being formed between the first receiving groove (101) and the second receiving groove (501), and the wiring module (200), the support plate (300) and the main board (400) are all arranged in the receiving cavity.

9. The soft starter according to claim 8, characterized in that: It also includes a power supply module (600) electrically connected to the mainboard (400), and the power supply module (600) is used to be electrically connected to an external power source; The top shell (500) is provided with a connecting column (510) in the second receiving groove (501), and the power supply module (600) is arranged on the connecting column (510).

10. The soft starter according to claim 8, characterized in that: The top shell (500) is provided with a mounting groove (503), one of the two sides of the mounting groove (503) along the second direction is provided with a top shell clamping hole (504), and the other side is provided with a limiting protrusion (505); The soft starter also includes a display box (700), one of the two sides of the display box (700) along the second direction being provided with a display box buckle (701), and the other side being provided with a limiting groove (702), and the display box buckle (701) being engaged with the top shell clamping hole (504), and the limiting protrusion (505) being arranged in the limiting groove (702).

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