CN220041736U - Electromagnetic starter - Google Patents

Abstract

The utility model belongs to the technical field of piezoelectric devices, and discloses an electromagnetic starter. The electromagnetic starter comprises a shell, a contactor, a thermal relay and a stop reset assembly, wherein the shell is provided with a containing cavity, the contactor is arranged in the containing cavity, the thermal relay is arranged in the containing cavity and is electrically connected with the contactor, and a stop key for stopping the electromagnetic starter and a reset key for resetting the thermal relay are arranged on the thermal relay; the first end of the stop reset component is used for being pressed so that the second end of the stop reset component triggers the stop key and the reset key, and the first end of the stop reset component can automatically reset when external pressing force is lost. The electromagnetic starter provided by the utility model does not need to disassemble the shell and then reset, so that inconvenience brought by disassembling the shell is avoided, and the operation convenience is improved.

Description

Electromagnetic starter

Technical Field

The utility model relates to the technical field of piezoelectric devices, in particular to an electromagnetic starter.

Background

The electromagnetic starter is a starter formed by combining an electromagnetic contactor, an overload protection element and the like, and is also called a magnetic starter, and because the electromagnetic starter directly applies the voltage of a power grid to a stator winding of a motor, the motor is started under the full voltage, the electromagnetic starter is also called a direct starter.

When the motor is overloaded or out of phase, the normally closed switch of the thermal relay inside the electromagnetic starter is opened to cut off the main circuit by opening the control circuit, so that the motor stops working. When the electromagnetic starter is reused after the normally closed switch of the thermal relay is disconnected, the electromagnetic starter can be reused after a reset key on the thermal relay is pressed.

The existing electromagnetic starter needs to realize the reset function of the thermal relay, and usually needs to open an external shell cover, reset by manually pressing an internal thermal relay reset button, and frequently disassemble and assemble the external shell cover of the electromagnetic starter, so that the operation is inconvenient.

Therefore, an electromagnetic starter is needed to solve the above technical problems.

Disclosure of Invention

The utility model aims to provide an electromagnetic starter, which aims to improve the convenience of resetting the electromagnetic starter.

To achieve the purpose, the utility model adopts the following technical scheme:

an electromagnetic starter comprising:

a housing having a receiving cavity;

the contactor is arranged in the accommodating cavity;

the thermal relay is arranged in the accommodating cavity and is electrically connected with the contactor, and a stop key for stopping the electromagnetic starter and a reset key for resetting the thermal relay are arranged on the thermal relay;

the stop reset assembly is arranged on the shell, the first end of the stop reset assembly is exposed out of the shell, the second end of the stop reset assembly is arranged in the accommodating cavity, the first end of the stop reset assembly is used for being pressed to enable the second end of the stop reset assembly to trigger the stop key and the reset key, and the first end of the stop reset assembly can be automatically reset when external pressing force is lost.

Optionally, the electromagnetic starter further includes:

the button contact system is arranged in the accommodating cavity and is electrically connected with the contactor;

the starting button assembly is arranged on the shell, the first end of the starting button assembly is exposed out of the shell, the second end of the starting button assembly is arranged in the accommodating cavity, the first end of the starting button assembly is used for being pressed to enable the second end of the starting button assembly to trigger the button contact system so as to start the electromagnetic starter, and the first end of the starting button assembly can be automatically reset when external pressing force is lost.

Optionally, the start button assembly and the stop reset assembly each include:

the pressing structure is arranged on the shell, and a first end of the pressing structure is exposed out of the shell;

the pressing plate is arranged in the accommodating cavity, the pressing plate is connected with the second end of the pressing structure, and the first end of the pressing structure is used for being pressed, so that the pressing plate triggers the button contact system or triggers the stop key and the reset key.

Optionally, the pressing structure includes a button, a guide rod and a first elastic element sleeved outside the guide rod, the button is clamped at one end of the guide rod, the pressing plate is arranged at the other end of the guide rod, one end of the first elastic element is abutted to the guide rod, and the other end of the first elastic element is abutted to the shell.

Optionally, the electromagnetic starter further comprises an indicator lamp and an observation window, wherein the indicator lamp is arranged in the accommodating cavity, the observation window is arranged on the shell, and the indicator lamp is arranged close to the observation window.

Optionally, a support is arranged in the shell, one end of the support is connected with the shell, a first boss close to the observation window is arranged at the other end of the support, and the indicator lamp is arranged on the first boss.

Optionally, be equipped with first mounting groove on the casing, the tank bottom of first mounting groove is equipped with the viewing aperture, the viewing aperture include transparent shroud and two parallel set up in the connecting rod of transparent shroud one side, transparent shroud is arranged in the tank bottom of first mounting groove, the connecting rod wears to locate the viewing aperture, just the tip hook joint of connecting rod in on the casing.

Optionally, one end of support is equipped with the grafting end, the grafting end includes along the grafting board that support length direction extends and protruding locates the grafting arch of grafting board, be provided with on the casing with the grafting groove that the grafting board corresponds, be equipped with two guide bars that are parallel to each other and extend along the groove depth direction on the cell wall of grafting groove, the grafting is protruding can accept two between the guide bar and with guide bar butt.

Optionally, a positioning component for positioning the contactor and a supporting component for supporting the thermal relay are arranged in the shell.

Optionally, the positioning assembly includes a guide rail, the guide rail is fixed in the casing, be provided with on the contactor with guide rail complex guide rail groove, the support assembly including slide set up in support slider in the casing, support slider is used for supporting thermal relay.

Optionally, the locating component including set up in spacing boss and a plurality of spacing muscle in the casing, spacing boss with the contactor passes through the screw connection, a plurality of spacing muscle distribute in the week side of contactor is with spacing the contactor, the supporting component is including being used for supporting the backup pad of thermal relay, just the backup pad with one of them spacing muscle is connected in order to support thermal relay.

Optionally, the positioning assembly further comprises a mounting table, the mounting table is arranged on the shell, a positioning boss is arranged on one side, away from the shell, of the mounting table, the guide rail comprises a bottom plate, and a positioning groove matched with the positioning boss is formed in the bottom plate.

Optionally, the support assembly further includes a guide protrusion disposed on the housing, the support slider includes a first support portion and a second support portion that are vertically disposed, the first support portion is slidably connected with the guide protrusion, the first support portion is configured to support the thermal relay, and the second support portion is capable of being matched with a side surface of the thermal relay.

The utility model has the beneficial effects that: the electromagnetic starter provided by the utility model comprises the stop reset component, wherein the stop reset component is arranged on the shell, the first end of the stop reset component is exposed out of the shell, the operation by an operator is facilitated, the second end of the stop reset component is arranged in the accommodating cavity of the shell, and the first end of the stop reset component is pressed, so that the second end of the stop reset component triggers the stop key of the electromagnetic starter and the reset key of the thermal relay, the electromagnetic starter stops working and the thermal relay synchronously resets.

Drawings

FIG. 1 is a schematic view of an electromagnetic starter according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram showing an internal structure of an electromagnetic starter according to an embodiment of the present utility model;

FIG. 3 is a schematic view showing an internal structure of an electromagnetic starter at another view angle according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a structure in which an observation window, a start button assembly and a stop reset assembly according to an embodiment of the present utility model are respectively mounted on a housing;

fig. 5 is a schematic structural view of a pressing structure according to an embodiment of the present utility model;

fig. 6 is an exploded view of a pressing structure provided by an embodiment of the present utility model;

FIG. 7 is a schematic view of the structure of the guide bar and button provided by the embodiment of the present utility model;

FIG. 8 is a schematic view of a seal provided by an embodiment of the present utility model;

FIG. 9 is a schematic view of a guide bar, guide post and platen according to an embodiment of the present utility model;

fig. 10 is a schematic structural view of a first top plate and a second top plate according to an embodiment of the present utility model;

FIG. 11 is a schematic view of a positioning boss and button housing provided by an embodiment of the present utility model;

FIG. 12 is a schematic view of an assembly of a start button assembly, a button contact system, and a bracket provided by an embodiment of the present utility model;

FIG. 13 is a schematic diagram of a stop reset assembly acting on a stop key and a reset key provided in an embodiment of the present utility model;

FIG. 14 is a schematic view showing the structure of the first top plate acting on the stop key and the reset key according to the embodiment of the present utility model;

FIG. 15 is a schematic view of a support frame according to an embodiment of the present utility model;

FIG. 16 is a schematic view of a bracket at another view angle according to an embodiment of the present utility model;

FIG. 17 is a schematic view of a button contact system mounted to a rack according to an embodiment of the present utility model;

FIG. 18 is a schematic view of a structure of a socket and a guide rib according to an embodiment of the present utility model;

FIG. 19 is a schematic view of a structure of a guide rib according to an embodiment of the present utility model;

FIG. 20 is a schematic view of a bracket according to an embodiment of the present utility model mounted on a housing;

FIG. 21 is a diagram showing the positional relationship between a positioning boss and a bracket provided by an embodiment of the present utility model;

fig. 22 is a schematic structural view of a first mounting groove, a second mounting groove and a third mounting groove on a housing according to an embodiment of the present utility model;

FIG. 23 is a schematic view of a structure of a viewing window according to an embodiment of the present utility model;

fig. 24 is a schematic structural view of a thermal relay according to an embodiment of the present utility model;

fig. 25 is a schematic structural view of a contactor according to an embodiment of the present utility model;

fig. 26 is a schematic structural diagram of the thermal relay and the contactor according to the embodiment of the present utility model after being assembled;

FIG. 27 is a schematic view of a positioning assembly and a support assembly provided by an embodiment of the present utility model;

FIG. 28 is a schematic view of the structure of a guide rail and mounting table provided by an embodiment of the present utility model;

FIG. 29 is a schematic view of a mounting table and positioning boss provided by an embodiment of the present utility model;

FIG. 30 is a schematic view of a guide rail according to an embodiment of the present utility model;

FIG. 31 is a schematic view of a supporting slider according to an embodiment of the present utility model;

FIG. 32 is a schematic view of a sliding tray according to an embodiment of the present utility model;

FIG. 33 is a schematic view of a slider assembly hole according to an embodiment of the present utility model;

FIG. 34 is a schematic view of a clamping assembly according to an embodiment of the present utility model;

fig. 35 is a schematic structural view of an installation mode of the contactor, the thermal relay and the housing according to the embodiment of the present utility model;

fig. 36 is a schematic view of another installation mode of the contactor, the thermal relay and the housing according to the embodiment of the present utility model;

FIG. 37 is a schematic view of a structure of a connection hole according to an embodiment of the present utility model;

fig. 38 is a schematic structural view of a support plate, a limiting boss and a limiting rib according to an embodiment of the present utility model.

In the figure:

100. a housing; 110. an upper cover; 111. a clamping groove; 112. wedge-shaped grooves; 113. a first mounting groove; 1131. an observation port; 1132. a limit protrusion; 114. a second mounting groove; 115. a third mounting groove; 116. a button housing; 117. a limiting ring; 118. positioning the bulge; 120. a base; 121. the clamping bulge; 122. a mounting column; 123. a plug-in groove; 124. a guide rib; 1241. an inclined portion;

200. a contactor; 210. a connection terminal; 220. a limit groove; 230. a guide rail groove; 231. a clamping protrusion; 240. a connection hole;

300. a thermal relay; 310. a stop key; 320. a reset key; 330. binding posts; 340. limiting hooks;

400. stopping the reset assembly; 410. a pressing structure; 411. a button; 4111. a clamping groove; 412. a guide rod; 4121. the boss is clamped; 4122. a first guide groove; 4123. a second guide groove; 413. a first elastic member; 420. a guide post; 421. a first guide boss; 422. a second guide boss; 430. a pressing plate; 431. reinforcing ribs; 440. a first top plate;

500. a start button assembly; 510. a second top plate;

600. a button contact system;

700. a seal; 710. a first branching portion; 720. a second branch part;

800. an indicator light;

900. an observation window; 910. a transparent cover; 920. a connecting rod;

1000. a bracket; 1010. a first boss; 1011. a first fitting hole; 1012. a first positioning hole; 1020. a plug end; 1021. a plug board; 1022. inserting the bulge; 1030. a second boss;

1100. a seal ring;

1200. a positioning assembly; 1210. a guide rail; 1211. a bottom plate; 12111. a positioning groove; 1212. a side plate; 1213. a clamping plate; 1214. a limit foot; 1220. a mounting table; 1221. positioning the boss; 1230. a limit boss; 1240. a limit rib;

1300. a support assembly; 1310. a support slider; 1311. a first support portion; 13111. a sliding groove; 13112. a slider assembly hole; 1312. a second supporting part; 1320. a guide projection; 1330. a support plate;

1400. a clamping assembly; 1410. a second elastic member; 1420. clamping the sliding block;

1500. and (3) a sealing ring.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

The present embodiment provides an electromagnetic starter, as shown in fig. 1 to 3, the electromagnetic starter includes a housing 100, a contactor 200, a thermal relay 300, and a stop reset assembly 400, the housing 100 has a receiving chamber, the contactor 200 and the thermal relay 300 are disposed in the receiving chamber, and the thermal relay 300 is electrically connected with the contactor 200, and a stop key 310 for stopping the electromagnetic starter and a reset key 320 for resetting the thermal relay 300 are disposed on the thermal relay 300; the stop reset assembly 400 is disposed on the housing 100, and a first end of the stop reset assembly 400 is exposed to the housing 100, a second end of the stop reset assembly 400 is disposed in the accommodating cavity, the first end of the stop reset assembly 400 is used for being pressed to trigger the stop key 310 and the reset key 320 by the second end of the stop reset assembly 400, and the first end of the stop reset assembly 400 can be automatically reset when the external pressing force is lost.

The electromagnetic starter provided by the utility model comprises the stop reset assembly 400, wherein the stop reset assembly 400 is arranged on the shell 100, the first end of the stop reset assembly 400 is exposed out of the shell 100, the operation of an operator is facilitated, the second end of the stop reset assembly is arranged in the accommodating cavity of the shell 100, the first end of the stop reset assembly 400 is pressed, so that the second end of the stop reset assembly 400 triggers the stop key 310 of the electromagnetic starter and the reset key 320 of the thermal relay 300, the electromagnetic starter stops working and the thermal relay 300 synchronously resets, and compared with the prior art, the electromagnetic starter does not need to detach the shell 100 and then reset the thermal relay 300, thereby avoiding inconvenience caused by disassembling and assembling the shell 100 and improving the operation convenience.

As shown in fig. 4, the electromagnetic starter further includes a start button assembly 500 and a button contact system 600, the button contact system 600 is disposed in the receiving chamber, the button contact system 600 is electrically connected with the contactor 200, the start button assembly 500 is disposed on the housing 100, a first end of the start button assembly is exposed to the housing 100, a second end of the start button assembly 500 is disposed in the receiving chamber, the first end of the start button assembly 500 is used for being pressed to trigger the button contact system 600 at the second end of the start button assembly 500 to turn on the electromagnetic starter, and the first end of the start button assembly 500 can be automatically reset when the external pressing force is lost. When the electromagnetic starter is activated, the first end of the start button assembly 500 is pressed, causing the second end of the start button assembly 500 to trigger the button contact system 600 to turn on the electromagnetic starter for convenient operation.

Further, as shown in fig. 5 to 14, the start button assembly 500 and the stop reset assembly 400 each include a pressing structure 410 and a pressing plate 430, the pressing structure 410 is disposed on the housing 100, a first end of the pressing structure 410 is exposed out of the housing 100, the pressing plate 430 is disposed in the accommodating cavity, and the pressing plate 430 is connected to a second end disposed on the pressing structure 410, and the first end of the pressing structure 410 is configured to be pressed so that the pressing plate 430 triggers the button contact system 600 or triggers the stop key 310 and the reset key 320. Specifically, the end of the pressing structure 410 away from the pressing plate 430 forms the first end of the start button assembly 500 or the stop reset assembly 400, and the pressing structure 410 is pressed to trigger the stop key 310 and the reset key 320 or the trigger button to contact the system 600 by the pressing plate 430, so that the reliability of triggering is ensured.

Specifically, referring to fig. 5 and 6, the pressing structure 410 includes a button 411, a guide rod 412, and a first elastic member 413 sleeved outside the guide rod 412, the button 411 is clamped to one end of the guide rod 412, the pressing plate 430 is disposed at the other end of the guide rod 412, one end of the first elastic member 413 is abutted to the guide rod 412, and the other end of the first elastic member 413 is abutted to the housing 100. When the button 411 is pressed during the pressing operation, the button 411 pushes the guide rod 412 and the pressing plate 430 to move towards the stop key 310 and the reset key 320 or towards the direction of approaching the button contact system 600, the first elastic member 413 is compressed, and two ends of the first elastic member 413 are respectively abutted against the guide rod 412 and the housing 100; after the pressing operation is completed, the first elastic member 413 is restored, the first elastic member 413 pushes the button 411 and the guide rod 412 to reset, and the guide rod 412 drives the pressing plate 430 to reset, so that the reliability of the pressing operation is improved.

Alternatively, referring to fig. 7, a plurality of uniformly distributed clamping grooves 4111 are provided on the peripheral side of the button 411, a plurality of uniformly distributed clamping bosses 4121 are provided on the peripheral side of the guide rod 412, the clamping grooves 4111 and the clamping bosses 4121 are matched with each other, and the clamping grooves 4111 and the clamping bosses 4121 are uniformly distributed to improve the connection reliability of the button 411 and the guide rod 412.

In this embodiment, referring to fig. 5, 6 and 9, a guide post 420 is disposed on the pressing plate 430, one end of the guide post 420 is connected to the pressing plate 430, and the other end of the guide post 420 is inserted into the guide rod 412 and is clamped with the guide rod 412. When the guide rod 412 moves, it drives the guide post 420 and the pressing plate 430 to move, and the height of the guide post 420 matches the stroke of the button 411, so that the pressing plate 430 effectively triggers the stop key 310 and the reset key 320 or effectively triggers the button contact system 600.

Specifically, the side wall of the guide rod 412 is provided with a first guide groove 4122 and a second guide groove 4123, the outer side of the guide post 420 is convexly provided with a first guide boss 421 and a second guide boss 422, the first guide boss 421 is matched with the first guide groove 4122, the second guide boss 422 is matched with the second guide groove 4123, the first guide groove 4122 can guide the first guide boss 421, and the second guide groove 4123 can guide the second guide boss 422, so that the convenience of plugging is improved.

Further, the first guiding boss 421 is arrow-shaped, the first guiding groove 4122 is arrow-shaped, and the first guiding boss 421 is locked into the first guiding groove 4122, so as not to be easy to release. The second guide boss 422 is square structure, and second guide slot 4123 is loudspeaker form, and the big end of second guide slot 4123 sets up outwards, and when guide arm 412 drove the guide and connect post 420 motion, first guide boss 421 joint was in first guide slot 4122, and second guide boss 422 joint is in second guide slot 4123, and when guide arm 412 pressed the guide and connect post 420, second guide boss 422 can make its expansion to second guide slot 4123 extrusion, and then makes first guide slot 4122 and first guide boss 421 reach the close-fitting effect, and difficult pine takes off has improved the connection reliability of guide and connect post 420 and guide arm 412.

Alternatively, as shown in fig. 5 and 8, the housing 100 is integrally formed with a button housing 116, the second end of the pressing structure 410 passes through the button housing 116 to be connected with the pressing plate 430, and the first elastic member 413 abuts against the button housing 116. A sealing member 700 is arranged between the guide rod 412 and the button housing 116, the sealing member 700 is sleeved on the guide rod 412, and the sealing member 700 is in interference fit with the button housing 116. After the installation, the sealing element 700 is in a pressed close-fitting state, and when the starting button assembly 500 moves, the sealing element 700 can move along with the guide rod 412, so that good waterproof and dustproof effects are achieved. The longitudinal section of the sealing member 700 is in a V-shaped structure, and includes a first branch portion 710 and a second branch portion 720 disposed at an included angle, the first branch portion 710 is sleeved on the guide rod 412, and the second branch portion 720 is tightly attached to the housing 100, so as to ensure a good waterproof and dustproof effect.

Preferably, the inner end of the button housing 116 is provided with a limiting ring 117, and the other end of the first elastic member 413 abuts against the limiting ring 117 to prevent the button housing from falling off the guide rod 412.

In this embodiment, referring to fig. 10, the pressing plate 430 of the stop-reset assembly 400 is defined as a first top plate 440, the pressing plate 430 of the start button assembly 500 is defined as a second top plate 510, and the first top plate 440 has a long strip structure so that it has a sufficient length to contact the stop key 310 and the reset key 320 on the thermal relay 300.

Preferably, the pressing plate 430 is provided with reinforcing ribs 431 to increase the strength thereof and to enhance the pressing effect.

As shown in fig. 1, 2 and 15-23, the electromagnetic starter further includes an indicator lamp 800 and an observation window 900, the indicator lamp 800 is disposed in the accommodating cavity, the indicator lamp 800 is used for indicating the working state of the electromagnetic starter, the observation window 900 is disposed on the housing 100, the observation window 900 is used for observing the state of the indicator lamp 800, and the indicator lamp 800 is disposed close to the observation window 900. Illustratively, the indicator light 800 is on when the electromagnetic starter is in operation, and the indicator light 800 is off when the electromagnetic starter is out of operation. By arranging the indicator lamp 800 close to the observation window 900, the working state of the electromagnetic starter can be obtained in time, so that the worker can follow the next action in time according to the related information.

Specifically, in fig. 15 to 17, a bracket 1000 for supporting the indicator lamp 800 is disposed in the housing 100, one end of the bracket 1000 is connected with the housing 100, a first boss 1010 disposed near the observation window 900 is disposed at the other end of the bracket 1000, the indicator lamp 800 is disposed on the first boss 1010, and the bracket 1000 can raise the installation height of the indicator lamp 800, so that the first boss 1010 is disposed near the observation window 900, so that the state of the indicator lamp 800 can be observed from the observation window 900.

Optionally, the first boss 1010 is provided with a first assembly hole 1011, and the indicator lamp 800 is screwed into the first assembly hole 1011, so as to facilitate disassembly and assembly thereof.

Preferably, the first boss 1010 is further provided with a first positioning hole 1012, and the housing 100 is provided with a positioning protrusion 118. The first positioning hole 1012 is matched with the positioning protrusion 118 to position the support 1000, so that the support 1000 and the shell 100 are effectively prevented from being loosened, and the effect of effectively positioning two ends of the support 1000 is achieved.

Optionally, a second boss 1030 parallel to the first boss 1010 is further provided on the support 1000, where the second boss 1030 is staggered with respect to the first boss 1010, and the second boss 1030 is used to fix the button contact system 600. The first boss 1010 and the second boss 1030 are staggered, so that the indicator lamp 800 can avoid circuit wiring interference of the button contact system 600, and the first positioning hole 1012 is matched with the positioning protrusion 118, so that the starting function failure of the button contact system 600 caused by the left-right offset of the bracket 100 can be effectively avoided, and the starting button assembly 500 can effectively trigger the button contact system 600.

Further, referring to fig. 16 and 18, an insertion end 1020 is disposed at one end of the bracket 1000, the insertion end 1020 includes an insertion plate 1021 extending along a length direction of the bracket 1000 and an insertion protrusion 1022 protruding from the insertion plate 1021, an insertion groove 123 corresponding to the insertion plate 1021 is disposed on the housing 100, two parallel guide ribs 124 extending along a groove depth direction are disposed on a groove wall of the insertion groove 123, and the insertion protrusion 1022 can be accommodated between the two guide ribs 124 and is abutted against the guide ribs 124. When the bracket 1000 is installed, the plug board 1021 is inserted into the plug slot 123, and the plug protrusion 1022 on the plug board 1021 is limited between the two guide ribs 124, so as to improve the installation stability of the bracket 1000.

Alternatively, referring to fig. 19, the guide rib 124 is provided with an inclined portion 1241 near the notch of the insertion groove 123. By the arrangement, the width of the guide rib 124 from the notch of the inserting groove 123 to the groove bottom is gradually increased, so that the bracket 1000 is transversely tightly matched. The width between the two guide ribs 124 is preferably slightly smaller than the width of the mating protrusion 1022 so that the mating protrusion 1022 is a longitudinal tight fit.

Optionally, as shown in fig. 22 and 23, a first mounting groove 113 is formed on the housing 100, an observation opening 1131 is formed at the bottom of the first mounting groove 113, the observation window 900 includes a transparent cover 910 and two connecting rods 920 disposed parallel to one side of the transparent cover 910, the transparent cover 910 is disposed at the bottom of the first mounting groove 113, the connecting rods 920 penetrate through the observation opening 1131, and the ends of the connecting rods 920 are hooked on the housing 100, so as to improve the installation reliability of the observation window 900.

Preferably, the edge of the first mounting groove 113 is convexly provided with a limiting protrusion 1132, after the transparent cover 910 is placed in the first mounting groove 113, the end face of the transparent cover 910 is flush with the end face of the limiting protrusion 1132, and the limiting protrusion 1132 can effectively prevent the transparent cover 910 from shaking, so as to improve the mounting stability of the cover.

Optionally, a sealing ring 1100 is disposed between the transparent cover 910 and the bottom of the first mounting groove 113, and the sealing ring 1100 can seal the gap between the transparent cover 910 and the bottom of the first mounting groove 113, so as to play a role in water and dust prevention.

In this embodiment, as shown in fig. 24-26, when the contactor 200 and the thermal relay 300 are installed, the binding post 330 on the thermal relay 300 is inserted into the binding post 210 of the contactor 200, the thermal relay 300 is further provided with a limit hook 340, and the contactor 200 is provided with a limit groove 220 matched with the limit hook 340, so that the connection and fixation between the contactor 200 and the thermal relay 300 are facilitated.

Referring to fig. 27 to 35, the housing 100 is provided with a positioning assembly 1200 to position the contactor 200 and a support assembly 1300 to support the thermal relay 300. By providing the positioning assembly 1200 and the support assembly 1300, connection of the contactor 200 and the thermal relay 300 to the housing 100 is achieved.

Further, the positioning assembly 1200 includes a guide rail 1210, the guide rail 1210 is fixed on the housing 100, the contactor 200 is provided with a guide rail groove 230 matched with the guide rail 1210, and the support assembly 1300 includes a support slider 1310 slidably disposed in the housing 100, where the support slider 1310 is used for supporting the thermal relay 300. During specific assembly, two sides of the guide rail 1210 respectively abut against two oppositely arranged groove walls of the guide rail groove 230 to complete positioning of the contactor 200, and the supporting slider 1310 is used for supporting the thermal relay 300.

Specifically, the positioning assembly 1200 further includes a mounting table 1220, the mounting table 1220 is disposed on the housing 100, a positioning boss 1221 is disposed on a side of the mounting table 1220 away from the housing 100, the guide rail 1210 includes a bottom plate 1211, and the bottom plate 1211 is provided with a positioning groove 12111 that is matched with the positioning boss 1221. In the installation, the positioning groove 12111 of the guide rail 1210 is fixed to the positioning boss 1221 of the installation table 1220, so as to complete the positioning of the guide rail 1210. To improve the fixing reliability of the mounting table 1220 and the guide rail 1210, the guide rail 1210 may be prevented from shaking by connecting the two using a screw.

Further, the guide rail 1210 further includes two side plates 1212 disposed on two sides of the bottom plate 1211 and perpendicular to the bottom plate 1211, and the two side plates 1212 are respectively abutted against two parallel side walls of the guide rail groove 230, so as to improve the stability of fixing the guide rail 1210.

Preferably, referring to fig. 30 and 35, the end of the side plate 1212 remote from the bottom plate 1211 is provided with outwardly extending snap-in plates 1213, and both side walls of the guide rail groove 230 of the contactor 200 are provided with snap-in protrusions 231, and when assembled, the two snap-in plates 1213 are respectively snapped between the groove bottom of the guide rail groove 230 and the snap-in protrusions 231 of the bottom of the corresponding contactor 200 to improve the mounting stability.

Preferably, both ends of the side plate 1212 are provided with limiting feet 1214, and after the two clamping plates 1213 are respectively clamped between the bottoms of the corresponding guide rail grooves 230 at the bottom of the contactor 200 and the clamping protrusions 231, the limiting feet 1214 at both ends of the clamping plates 1213 are respectively positioned at both sides of the contactor 200, thereby limiting the contactor 200.

Referring to fig. 34, in order to improve the fastening stability between the guide rail 1210 and the guide rail groove 230, a fastening assembly 1400 is provided at the bottom of the contactor 200, and after the guide rail 1210 is fastened into the guide rail groove 230, the fastening assembly 1400 can fasten the guide rail 1210 to improve the reliability of the installation of the guide rail 1210.

Specifically, the first side wall of the guide rail groove 230 is provided with a receiving groove for receiving the clamping assembly 1400, the clamping assembly 1400 includes a second elastic member 1410 and a clamping slider 1420, the clamping slider 1420 is slidably connected to the contactor 200, one end of the second elastic member 1410 is fixedly connected to the contactor 200, and the other end of the second elastic member 1410 abuts against the clamping slider 1420. When the contactor 200 is fixed, one side of the guide rail 1210 is firstly abutted against the second side wall of the guide rail groove 230, when the other side of the guide rail 1210 is contacted with the first side wall of the guide rail groove 230, the clamping slide block 1420 slides to the side far away from the guide rail 1210, the second elastic piece 1410 is compressed, and after the guide rail 1210 is completely clamped into the guide rail groove 230, the second elastic piece 1410 releases the pressing force, so that the clamping slide block 1420 clamps the guide rail 1210, and quick installation is realized.

The clamping slider 1420 is illustratively configured as a square structure, the second elastic member 1410 is disposed at a middle position of the square structure, one end of the second elastic member 1410 away from the guide rail groove 230 is fixed on the bottom surface of the contactor 200, and the other end abuts against the clamping slider 1420.

Optionally, the support assembly 1300 further includes a guide protrusion 1320 disposed on the housing 100, the support slider 1310 includes a first support portion 1311 and a second support portion 1312 disposed vertically, the first support portion 1311 is slidably connected to the guide protrusion 1320, and the first support portion 1311 is used for supporting the thermal relay 300, and the second support portion 1312 can be attached to a side surface of the thermal relay 300. After the positioning of the contactor 200 is completed, the supporting slider 1310 moves along the guiding protrusion 1320, so that the supporting slider 1310 approaches to the thermal relay 300, the first supporting portion 1311 slides along the bottom surface of the thermal relay 300 until the side surface of the first supporting portion 1311 abuts against the contactor 200, and at this time, the second supporting portion 1312 moves to abut against the side surface of the thermal relay 300, so as to limit the thermal relay 300, and prevent the thermal relay 300 from generating displacement deviation, so that the function of the electromagnetic thermal relay 300 is disabled.

The first support 1311 is provided with a slider assembly hole 13112 so that the support slider 1310 and the guide boss 1320 are connected by a screw. After the support block 1310 is slid into place, the support block 1310 and the guide boss 1320 are connected using screws to prevent the support block 1310 from sliding along the guide boss 1320. In this embodiment, the second support portion 1312 includes two parallel support plates, and the slider assembly hole 13112 is located on the first support portion 1311 between the two support plates.

In some embodiments, as shown in fig. 36-38, the mounting of the contactor 200 and the base 120 is not limited to a rail clip connection, but may be fastened by screws. Specifically, the positioning assembly 1200 includes a limiting boss 1230 and a plurality of limiting ribs 1240 disposed in the housing 100, the limiting boss 1230 is connected with the contactor 200 through a screw, and the limiting boss 1230 can also play a role in supporting the contactor 200. The plurality of limiting ribs 1240 are disposed on the housing 100 and distributed on a peripheral side of the contactor 200 to limit the thermal relay 300, the support assembly 1300 includes a support plate 1330 for supporting the thermal relay 300, and the support plate 1330 is connected with one of the limiting ribs 1240 to support the thermal relay 300. Specifically, the bottom of the contactor 200 is provided with a connection hole 240, and the limit boss 1230 is inserted into the connection hole 240 and fixed by a screw to improve connection stability.

Alternatively, as shown in fig. 1 to 3, 10, 11, 22, 36 and 38, the housing 100 includes an upper cover 110 and a base 120 that are covered with each other, an inner wall of the upper cover 110 and an inner wall of the base 120 surround to form a receiving cavity, a start button assembly 500, a stop reset assembly 400 and an observation window 900 are provided on the upper cover 110, and the contactor 200 and the thermal relay 300 are provided at the bottom of the base 120. The start button assembly 500 and the stop reset assembly 400 are provided on the upper cover 110, so that the operation of a worker is facilitated; the observation window 900 is arranged on the upper cover 110, so that the observation of staff is facilitated; the contactor 200 and the thermal relay 300 are provided at the bottom of the base 120 to improve the installation stability.

In this embodiment, the edge of the base 120 is provided with the clamping protrusion 121, the edge of the upper cover 110 is provided with the clamping groove 111 matching with the clamping protrusion 121, and the matching of the clamping protrusion 121 and the clamping groove 111 realizes the positioning of the upper cover 110 and the base 120, so as to facilitate the disassembly and assembly of the housing 100.

Optionally, a sealing ring 1500 is disposed between the clamping protrusion 121 and the clamping groove 111, and the sealing ring 1500 has waterproof and dustproof effects.

Further, two parallel outer side surfaces of the upper cover 110 are respectively provided with a wedge-shaped groove 112, an inner wall of the base 120 is provided with a mounting column 122, and a groove bottom of the wedge-shaped groove 112 is connected with the mounting column 122 through a screw, so that fixing reliability of the upper cover 110 and the base 120 is improved.

The outer surface of the upper cover 110 is further provided with a second mounting groove 114 and a third mounting groove 115, and the button 411 of the start button assembly 500 and the button 411 of the stop reset assembly 400 are respectively disposed in the second mounting groove 114 and the third mounting groove 115 to protect the button 411 of the start button assembly 500 and the button 411 of the stop reset assembly 400 from shaking.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (13)

1. An electromagnetic starter, comprising:

a housing (100) having a receiving cavity;

a contactor (200) provided in the accommodation chamber;

a thermal relay (300) disposed in the accommodating cavity, wherein the thermal relay (300) is electrically connected with the contactor (200), and a stop key (310) for stopping the electromagnetic starter and a reset key (320) for resetting the thermal relay (300) are disposed on the thermal relay (300);

the stop reset assembly (400) is arranged on the shell (100), the first end of the stop reset assembly (400) is exposed out of the shell (100), the second end of the stop reset assembly (400) is arranged in the accommodating cavity, the first end of the stop reset assembly (400) is used for being pressed to enable the second end of the stop reset assembly (400) to trigger the stop key (310) and the reset key (320), and the first end of the stop reset assembly (400) can be automatically reset when external pressing force is lost.

2. The electromagnetic starter of claim 1 further comprising:

a button contact system (600) disposed within the receiving cavity, the button contact system (600) being electrically connected to the contactor (200);

the starting button assembly (500) is arranged on the shell (100), the first end of the starting button assembly (500) is exposed out of the shell (100), the second end of the starting button assembly (500) is arranged in the accommodating cavity, the first end of the starting button assembly (500) is used for being pressed to enable the second end of the starting button assembly (500) to trigger the button contact system (600) so as to start the electromagnetic starter, and the first end of the starting button assembly (500) can be automatically reset when external pressing force is lost.

3. The electromagnetic starter as set forth in claim 2, wherein the start button assembly (500) and the stop-reset assembly (400) each include:

a pressing structure (410) disposed on the housing (100), wherein a first end of the pressing structure (410) is exposed out of the housing (100);

and the pressing plate (430) is arranged in the accommodating cavity, the pressing plate (430) is connected with the second end of the pressing structure (410), and the first end of the pressing structure (410) is used for being pressed so that the pressing plate (430) triggers the button contact system (600) or triggers the stop key (310) and the reset key (320).

4. An electromagnetic starter according to claim 3, wherein the pressing structure (410) comprises a button (411), a guide rod (412) and a first elastic member (413) sleeved outside the guide rod (412), the button (411) is clamped at one end of the guide rod (412), the pressing plate (430) is arranged at the other end of the guide rod (412), one end of the first elastic member (413) is abutted to the guide rod (412), and the other end of the first elastic member (413) is abutted to the housing (100).

5. The electromagnetic starter of claim 1 further comprising an indicator light (800) and a viewing window (900), the indicator light (800) being disposed within the receiving cavity, the viewing window (900) being disposed on the housing (100), the indicator light (800) being disposed proximate the viewing window (900).

6. The electromagnetic starter according to claim 5, wherein a bracket (1000) is provided in the housing (100), one end of the bracket (1000) is connected with the housing (100), a first boss (1010) provided near the observation window (900) is provided at the other end of the bracket (1000), and the indicator lamp (800) is provided on the first boss (1010).

7. The electromagnetic starter according to claim 5, wherein the housing (100) is provided with a first mounting groove (113), a viewing port (1131) is formed in a groove bottom of the first mounting groove (113), the viewing window (900) comprises a transparent cover (910) and two connecting rods (920) arranged on one side of the transparent cover (910) in parallel, the transparent cover (910) is arranged at the groove bottom of the first mounting groove (113), the connecting rods (920) penetrate through the viewing port (1131), and the end parts of the connecting rods (920) are hooked on the housing (100).

8. The electromagnetic starter according to claim 6, wherein one end of the bracket (1000) is provided with a plugging end (1020), the plugging end (1020) comprises a plugging plate (1021) extending along the length direction of the bracket (1000) and a plugging protrusion (1022) protruding from the plugging plate (1021), the housing (100) is provided with a plugging groove (123) corresponding to the plugging plate (1021), the groove wall of the plugging groove (123) is provided with two guide ribs (124) parallel to each other and extending along the groove depth direction, and the plugging protrusion (1022) can be accommodated between the two guide ribs (124) and is abutted against the guide ribs (124).

9. The electromagnetic starter according to claim 1, characterized in that a positioning assembly (1200) for positioning the contactor (200) and a support assembly (1300) for supporting the thermal relay (300) are provided within the housing (100).

10. The electromagnetic starter of claim 9 wherein the positioning assembly (1200) includes a guide rail (1210), the guide rail (1210) is fixed within the housing (100), the contactor (200) is provided with a guide rail groove (230) that mates with the guide rail (1210), the support assembly (1300) includes a support slider (1310) slidably disposed within the housing (100), the support slider (1310) is configured to support the thermal relay (300).

11. The electromagnetic starter of claim 10 wherein the positioning assembly (1200) further includes a mounting table (1220), the mounting table (1220) being disposed on the housing (100), a positioning boss (1221) being disposed on a side of the mounting table (1220) remote from the housing (100), the guide rail (1210) including a base plate (1211), the base plate (1211) being provided with a positioning slot (12111) that mates with the positioning boss (1221).

12. The electromagnetic starter of claim 10 wherein the support assembly (1300) further includes a guide tab (1320) provided on the housing (100), the support slider (1310) includes a first support portion (1311) and a second support portion (1312) disposed vertically, the first support portion (1311) is slidably connected to the guide tab (1320), and the first support portion (1311) is configured to support the thermal relay (300), and the second support portion (1312) is configured to engage a side of the thermal relay (300).

13. The electromagnetic starter of claim 9 wherein the positioning assembly (1200) includes a limit boss (1230) and a plurality of limit ribs (1240) disposed in the housing (100), the limit boss (1230) being connected to the contactor (200) by screws, the plurality of limit ribs (1240) being distributed on a peripheral side of the contactor (200) to limit the contactor (200), the support assembly (1300) including a support plate (1330) for supporting the thermal relay (300), the support plate (1330) being connected to one of the limit ribs (1240) to support the thermal relay (300).