High-safety soft starter

Abstract

The utility model provides a soft starter with high safety, comprising a housing and a panel, the housing is provided with an input pin and an output pin, the housing is internally provided with a heat radiation assembly, a circuit board and a silicon controlled rectifier, the input pin and the output pin are connected with the silicon controlled rectifier, the heat radiation assembly comprises two side heat radiation members clamping the silicon controlled rectifier, and the circuit board is connected with the circuit board. Positioning bosses are arranged between the other sides, opposite to the panel, of the heat dissipation assemblies and the inner wall of the shell, mounting holes are formed in the positions, corresponding to the positioning bosses, of the shell, the heat dissipation assemblies are detachably connected with the positioning bosses and the shell through fastening assemblies, and an insulating plate is inserted between the heat dissipation assemblies. By the adoption of the technical scheme, the overall structure is more compact, the size is reduced, meanwhile, due to the fact that the distance is small, fixing of the insulating plates is facilitated, installation is convenient, the application range is wider, standardized batch production of shells is facilitated, production cost is reduced, rapid assembling is convenient, assembling efficiency is improved, frequent starting can be achieved, overheating cannot be caused, and safety is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of circuit equipment, concretely relates to a high safety soft starter. BACKGROUND

[0002] The soft starter is a novel motor control device integrating motor soft start, soft parking, light load energy saving and various protection functions, and is called Soft Starter abroad, and the main composition thereof is three-phase anti-parallel thyristor and its electronic control circuit connected in series between the power supply and the controlled motor. The soft starter controls the conduction angle of the silicon controlled rectifier inside, so that the motor input voltage gradually rises from zero in a preset function relationship until the start ends, and the motor is given full voltage, that is, soft start. During the soft start process, the motor starting torque gradually increases, and the rotating speed also gradually increases. The existing soft starter comprises a shell, input pins and output pins are arranged on the shell, and a heat dissipation assembly, a circuit board, a current detection mutual inductor, a silicon controlled rectifier and a transformer electrically connected with the circuit board are arranged in the shell. The input pins and the output pins are connected with the silicon controlled rectifier.

[0003] For example, the built-in bypass soft starter applied by the applicant on December 27, 2019 changes the distribution of part positions, and the upper heat dissipation member and the lower heat dissipation member sandwich the silicon controlled rectifier, which is convenient for heat dissipation. However, since three groups of heat dissipation assemblies need to be accommodated in the shell, and different safety isolation spaces (generally about 15 mm) are required between the heat dissipation assemblies according to different power specifications of the soft starter, the high-power soft starter has the problem of excessively large volume, and the shells of soft starters of different specifications cannot be used universally. Meanwhile, the existing soft starter adopts an energy storage type heat dissipation member, and frequent start-up can cause overheating failure. UTILITY MODEL CONTENTS

[0004] Based on the above problems, the utility model aims to provide a high safety soft starter.

[0005] In view of the above problems, the following technical scheme is provided: a high safety soft starter, comprising a shell and a panel, input pins and output pins are arranged on the shell, and the shell comprises multiple groups of heat dissipation assemblies, a circuit board and a silicon controlled rectifier. The input pins and the output pins are connected with the silicon controlled rectifier, the heat dissipation assemblies comprise two side heat dissipation members sandwiching the silicon controlled rectifier, a positioning boss is arranged between the heat dissipation assemblies and the inner wall of the shell on the other side of the panel, an installation hole is arranged on the shell corresponding to the position of the positioning boss, the heat dissipation assemblies are detachably connected with the positioning boss and the shell through fastening assemblies, and an insulating plate is arranged between the heat dissipation assemblies.

[0006] By adopting the technical scheme, the spacing between the heat dissipation assemblies is fixed by the positioning bosses, the spacing is greatly reduced by inserting the insulating plates, the overall structure is more compact, the volume is reduced, the insulating plates are fixed conveniently due to the small spacing, no positioning mechanism for fixing the insulating plates is needed, installation is convenient, and the soft starters with different powers only need to replace the insulating plates with different thicknesses (2-3 mm, not limited to the size of the interval, only to make the difference from the existing soft starters more intuitive under the same specification) to realize safety insulation, so that the use range of the soft starter is wider, the shell is standardized for batch production, the production cost is greatly reduced, the spacing is fixed, the positioning bosses and the mounting holes are matched and positioned, assembly is convenient and fast, assembly efficiency is improved, no additional adjustment space is needed, and no re-punching is needed; meanwhile, the spacing is reduced, the heat dissipation part can be larger, the heat dissipation function is greatly improved, frequent starting can be realized without causing overheating, and safety is higher.

[0007] The utility model further sets up: the insulating plate is inserted between the both sides inner wall of shell and heat dissipation assembly.

[0008] By adopting the technical scheme, the spacing between the heat dissipation assemblies is fixed by the positioning bosses, the spacing is greatly reduced by inserting the insulating plates, the overall structure is more compact, the volume is reduced, the insulating plates are fixed conveniently due to the small spacing, no positioning mechanism for fixing the insulating plates is needed, installation is convenient, and the soft starters with different powers only need to replace the insulating plates with different thicknesses (2-3 mm, not limited to the size of the interval, only to make the difference from the existing soft starters more intuitive under the same specification) to realize safety insulation, so that the use range of the soft starter is wider, the shell is standardized for batch production, the production cost is greatly reduced, the spacing is fixed, the positioning bosses and the mounting holes are matched and positioned, assembly is convenient and fast, assembly efficiency is improved, no additional adjustment space is needed, and no re-punching is needed; meanwhile, the spacing is reduced, the heat dissipation part can be larger, the heat dissipation function is greatly improved, frequent starting can be realized without causing overheating, and safety is higher.

[0009] The utility model further sets up: the input pin, output pin same specification is set up, the position of shell corresponding input pin, output pin is provided with the jack, be provided with the sleeve in the jack, the sleeve includes main part, the main part is provided with the through -hole of being suitable for input pin, the main part is provided with the protection convex part for preventing water vapor, dust from entering in the outside corresponding shell, the protection convex part is greater than the size of the jack.

[0010] By adopting the technical scheme, compared with the existing jack that is mostly arranged in a plane, water vapor and dust are easy to enter the shell through the through hole, causing a short circuit of the conductive circuit, the protection convex part is arranged to block water vapor and dust from entering the shell, and the safety of the soft starter is improved.

[0011] The utility model further sets up: the main part is provided with the holding portion outside corresponding shell, the holding portion is arranged between the protection convex part and the shell outer wall in a ladder type, the main part is provided with the clamping portion inside corresponding shell, and the shell is clamped between the clamping portion and the holding portion.

[0012] By adopting the technical scheme, the protection function of the sleeve is further improved, water vapor and dust are prevented from entering the shell, and the safety of the soft starter is further improved.

[0013] The utility model further sets up: the heat dissipation spare left and right sandwich sets thyristor, the heat dissipation spare is corresponded to one side of positioning boss and is provided with the installation sliding slot, the fastening assembly includes the bolt of one end sliding setting in the installation sliding slot and the nut setting in the shell outside, the positioning boss is provided with the installation passageway for bolt to pass through.

[0014] Through adopting above technical scheme, the heat dissipation spare adopts left and right sandwich sets thyristor, and has assembled space on the upper and lower, and the nut end of bolt is placed in the installation sliding slot, and the screw rod is passed through the installation passageway and the mounting hole of shell, and the nut is tightened from the shell outside, thereby fixing the heat dissipation spare, installation boss, and the disassembly is simpler, more convenient and high in efficiency.

[0015] The utility model further sets up: the positioning boss adopts insulating material.

[0016] Through adopting above technical scheme, the positioning boss increases the distance between heat dissipation spare and shell, increases the heat dissipation space, further improves the heat dissipation performance, and strengthens its safety performance. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is the internal structure front view of the utility model.

[0018] Fig. 2 It is the internal structure partial perspective view of the utility model.

[0019] Fig. 3 It is the perspective view of the utility model.

[0020] The meaning of figure mark: 1. shell, 11. jack, 12. input pin, 13. output pin, 2. panel, 3. heat dissipation assembly, 31. heat dissipation spare, 311. installation sliding slot, 4. thyristor, 5. fastening assembly, 51. bolt, 52. nut, 6. positioning boss, 7. insulating plate, 8. sleeve, 81. main body, 82. through hole, 83. protection convex part, 84. holding part, 85. clamping part. DETAILED DESCRIPTION

[0021] The specific implementation of the utility model is described in further detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

[0022] Reference is made to the drawings Figs. 1-3The utility model provides a high security soft starter, including casing 1 and panel 2, be equipped with input pin 12, output pin 13 on casing 1, including multiple sets of heat dissipation components 3, circuit board and thyristor 4 in casing 1, input pin 12, output pin 13 are connected with thyristor 4, the heat dissipation component 3 includes two sides heat dissipation piece 31 of clamping thyristor 4, the other side of heat dissipation component 3 is provided with positioning boss 6 between casing 1 inner wall, the position of casing 1 is provided with mounting hole corresponding positioning boss 6, heat dissipation component 3 is detachably connected with positioning boss 6, casing 1 through fastening assembly 5, the heat dissipation component 3 is inserted with insulating plate 7 between.

[0023] The utility model further sets up: the heat dissipation component 3 is inserted with insulating plate 7 between the both sides inner wall of casing 1 respectively.

[0024] The utility model further sets up: input pin 12, output pin 13 are same in specification, the position of casing 1 is provided with jack 11 corresponding input pin 12, output pin 13, the jack 11 is provided with sleeve 8 in, sleeve 8 includes main body 81, main body 81 is provided with with hole 82 of adapting with input pin 12, main body 81 is provided with the protection convex part 83 for preventing water vapor, dust from entering corresponding the outside of casing 1, and the protection convex part 83 is greater than the size of jack 11.

[0025] The utility model further sets up: main body 81 is provided with holding portion 84 corresponding the outside of casing 1, and holding portion 84 is arranged between the protection convex part 83 and the outer wall of casing 1 in ladder type, and main body 81 is provided with clamping portion 85 corresponding the inside of casing 1, and casing 1 is clamped between clamping portion 85 and holding portion 84.

[0026] The utility model further sets up: the heat dissipation piece 31 is clamped to the left and right of thyristor 4, and the heat dissipation piece 31 is provided with mounting sliding slot 311 on one side corresponding positioning boss 6, and the fastening assembly 5 includes bolt 51 slidably arranged in mounting sliding slot 311 and nut 52 arranged outside casing 1, and positioning boss 6 is provided with installation passageway for bolt 51 to pass through.

[0027] The utility model further sets up: positioning boss 6 adopts insulating material.

[0028] In the description of the utility model, it is necessary to explain that the terms "intermediate", "left", "right", "inner", "outer" and the like indicate the position or location relationship based on the position or location relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the utility model. The above "between" does not only refer to the position or location between, but also includes the meaning between the interaction of different parts.

[0029] Although the terms such as shell 1, jack 11, input pin 12, output pin 13, panel 2, heat dissipation assembly 3, heat dissipation piece 31, mounting sliding groove 311, thyristor 4, fastening assembly 5, bolt 51, nut 52, positioning boss 6, insulating plate 7, clamping sleeve 8, main body 81, through hole 82, protection convex part 83, holding part 84, clamping part 85 are used more in the present application, but the possibility of using other terms is not excluded. Using these terms is only for the convenience of describing and explaining the essence of the utility model; any kind of additional limitation is contrary to the spirit of the utility model.

Claims

1. A high-safety soft starter, comprising a housing and a panel, wherein the housing is provided with input pins and output pins, wherein the housing contains multiple heat dissipation components, a circuit board, and a thyristor, wherein the input pins and output pins are connected to the thyristor, and wherein: The heat dissipation assembly includes heat dissipation parts on both sides of which a thyristor is clamped. A positioning boss is provided between the other side of the heat dissipation assembly opposite to the panel and the inner wall of the shell. The shell is provided with a mounting hole at a position corresponding to the positioning boss. The heat dissipation assembly is detachably connected to the positioning boss and the shell through a fastening assembly, and an insulating plate is inserted between the heat dissipation assemblies.

2. A high-safety soft starter according to claim 1, characterized in that: Insulation plates are respectively inserted between the inner walls on both sides of the shell and the heat dissipation components.

3. A high-safety soft starter according to claim 1, characterized in that: The input pins and output pins have the same specifications. The shell is provided with jacks at positions corresponding to the input pins and the output pins. A ferrule is provided in the jack. The ferrule includes a main body. The main body is provided with a through hole adapted to the input pin. A protective protrusion is provided on the outside of the main body corresponding to the shell to prevent the entry of water vapor and dust. The protective protrusion is larger than the size of the jack.

4. A high-safety soft starter according to claim 3, characterized in that: The main body is provided with a gripping portion on the outer side of the shell, and the gripping portion is arranged in a stepped manner between the protective protrusion and the outer wall of the shell. The main body is provided with a clamping portion on the inner side of the shell, and the shell is clamped between the clamping portion and the gripping portion.

5. A high-safety soft starter according to claim 1, characterized in that: The heat sink is provided with thyristors on the left and right sides, and a mounting groove is provided on one side of the heat sink corresponding to the positioning boss. The fastening assembly includes a bolt with one end slidingly set in the mounting groove and a nut set outside the shell, and the positioning boss is provided with a mounting channel for the bolt to pass through.

6. A high-safety soft starter according to claim 1, characterized in that: The positioning boss is made of insulating material.

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