Electromagnetic starter

Abstract

The present disclosure relates to an electromagnetic starter, comprising a housing, a contactor, a relay and a limiting component. The housing has a containing cavity, the contactor is arranged in the containing cavity, the relay is arranged in the containing cavity and detachably connected with the contactor, and the limiting component is arranged in the containing cavity, the limiting component comprising a support connected to the housing and a positioning member connected with the support, the support being used for limiting the relay in a first direction, and the positioning member being used for limiting the contactor in the first direction, wherein the positioning member is located between the contactor and the relay in the first direction, or the positioning member is located on one side of the contactor in the first direction, and the positioning member is clamped between the support and the relay. In this way, by configuring different specifications of the positioning member and replacing only the positioning member, the electromagnetic starter can be adapted to different specifications of the relay, effectively improving the assembly speed and the universality of the housing, reducing the manufacturing types and spare parts types of the electromagnetic starter, and reducing the warehouse management cost.

Description

Technical Field

[0001] This disclosure relates to the field of electrical technology, and more specifically, to an electromagnetic starter. Background Technology

[0002] An electromagnetic starter is a type of starter composed of an electromagnetic contactor and overload protection components. It directly applies the mains voltage to the stator windings of the motor, enabling the motor to start at full voltage. In related technologies, the contactor and relay in the electromagnetic starter need to be stably installed within the starter housing to ensure the reliability of the electrical connection. However, existing electromagnetic starters often have complex structures and limited mounting methods, only compatible with relays of a single size, lacking selectivity. Utility Model Content

[0003] The purpose of this disclosure is to provide an electromagnetic starter that can be adapted to relays of different sizes.

[0004] To achieve the above objectives, this disclosure provides an electromagnetic starter, comprising:

[0005] The shell has a receiving cavity;

[0006] The contactor is disposed within the receiving cavity;

[0007] A relay, disposed within the receiving cavity and detachably connected to the contactor; and

[0008] A limiting assembly, disposed within the receiving cavity, includes a support member connected to the housing and a positioning member connected to the support member. The support member is used to limit the relay in a first direction, and the positioning member is used to limit the contactor in the first direction.

[0009] The positioning element is located between the contactor and the relay in the first direction; or

[0010] The positioning element is located on one side of the contactor in the first direction, and the positioning element is sandwiched between the support and the relay.

[0011] Optionally, the support member is sandwiched between the housing and the relay, and in the first direction, a limiting boss is formed on the side of the support member away from the contactor for abutting against the relay.

[0012] Optionally, the limiting assembly includes a plurality of limiting steps connected to the housing for limiting the contactor in a second direction, wherein a first mounting portion is provided on the limiting step; the limiting assembly further includes a second mounting portion connected to the housing, wherein the contactor is selectively mounted on either the first mounting portion or the second mounting portion.

[0013] Optionally, the limiting step is an L-shaped structure with a horizontal segment and a vertical segment, the first mounting portion including a threaded hole formed in the horizontal segment, and the vertical segment used to limit the contactor in a second direction.

[0014] Optionally, the second mounting portion includes a mounting base connected to the housing and a mounting rail detachably mounted to the mounting base, the contactor being configured to connect to the mounting base via the mounting rail.

[0015] The mounting base has at least two positioning bosses, and the mounting rail has positioning grooves that mate with the positioning bosses.

[0016] Optionally, the housing includes a first housing and a second housing that interlock with each other, the first housing and the second housing being connected by fasteners extending along their interlocking direction, and a sealing ring being provided between the first housing and the second housing, the fasteners being located outside the sealing ring.

[0017] Optionally, one of the first housing and the second housing is provided with a sealing groove for placing a sealing ring, and the other housing is formed with a sealing protrusion that mates with the sealing groove. When the first housing and the second housing are engaged, the sealing protrusion is used to abut against the sealing ring.

[0018] Optionally, a foolproof protrusion is formed on one side edge of the first housing, and a foolproof groove that mates with the foolproof protrusion is formed on the second housing.

[0019] Optionally, the outer periphery of the housing is formed with mounting ears, and the mounting ears have first mounting holes for connection with the outside; and / or

[0020] A second mounting hole for connection to the outside is provided on one side wall of the housing.

[0021] Optionally, the housing is further provided with a plurality of contact plate mounting slots at intervals, and the electromagnetic starter also includes contact plates that correspond one-to-one with the contact plate mounting slots. The edges of the contact plates are formed with serrated structures, and the serrated structures abut against the contact plate mounting slots for interference fit with the contact plate mounting slots.

[0022] Through the above technical solution, when the relay size is large, the positioning element can be located between the contactor and the relay in the first direction, in which case the positioning element only limits the contactor. When the relay size is small, only the positioning element can be replaced so that it can not only limit the contactor but also support the relay, facilitating the connection between the contactor and the relay. Thus, by configuring positioning elements of different specifications and simply replacing the positioning elements, the electromagnetic starter can be adapted to relays of different specifications without requiring processing of other components in the housing. This effectively improves assembly speed and housing versatility, reduces the types of electromagnetic starters and spare parts required, and lowers warehousing and management costs.

[0023] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0024] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0025] Figure 1 This is a schematic diagram of an electromagnetic starter according to one embodiment of the present disclosure.

[0026] Figure 2 This is a schematic diagram of an electromagnetic starter (with the first housing removed) according to one embodiment of the present disclosure.

[0027] Figure 3 This is a schematic diagram of a second housing and a limiting assembly in an electromagnetic starter according to one embodiment of the present disclosure.

[0028] Figure 4 This is a schematic diagram from another perspective of the second housing and the limiting assembly in an electromagnetic starter according to one embodiment of the present disclosure.

[0029] Figure 5 This is a schematic diagram of the housing connection of an electromagnetic starter according to one embodiment of the present disclosure.

[0030] Figure 6 This is a schematic diagram of the guide rail body in an electromagnetic starter according to one embodiment of the present disclosure.

[0031] Figure 7 This is a schematic diagram of a contactor in an electromagnetic starter according to one embodiment of the present disclosure.

[0032] Figure 8 This is a schematic diagram of the contactor in an electromagnetic starter according to one embodiment of the present disclosure from another perspective.

[0033] Figure 9This is a schematic diagram of a relay in an electromagnetic starter according to one embodiment of the present disclosure.

[0034] Figure 10 This is a schematic diagram from another perspective of an electromagnetic starter (with the first housing removed) according to one embodiment of the present disclosure.

[0035] Figure 11 This is a schematic diagram of a positioning element mounted on a housing in an electromagnetic starter according to one embodiment of the present disclosure.

[0036] Figure 12 This is a schematic diagram of a positioning element in an electromagnetic starter according to one embodiment of the present disclosure.

[0037] Figure 13 This is a schematic diagram of a positioning element mounted on a housing in an electromagnetic starter according to another embodiment of the present disclosure.

[0038] Figure 14 This is a schematic diagram of a positioning element in an electromagnetic starter according to another embodiment of the present disclosure.

[0039] Figure 15 yes Figure 5 An enlarged view of part A based on the basic structure.

[0040] Figure 16 This is a schematic diagram of the first housing in an electromagnetic starter according to one embodiment of the present disclosure.

[0041] Figure 17 This is a schematic diagram of the second housing in an electromagnetic starter according to one embodiment of the present disclosure.

[0042] Figure 18 This is a schematic diagram of a contact plate in an electromagnetic starter according to one embodiment of the present disclosure.

[0043] Explanation of reference numerals in the attached figures

[0044] 1-Housing; 10-Receiving cavity; 11-First housing; 111-Sealing protrusion; 112-Fake-proof protrusion; 12-Second housing; 121-Sealing groove; 122-Fake-proof groove; 123-First mounting hole; 124-Second mounting hole; 125-Wiring hole; 13-Contact plate mounting groove; 2-Contactor; 21-Guide rail groove; 211-Bottom wall; 212-Mounting side wall; 213-Protrusion; 22-Elastic element; 23-Slider; 24-Hook groove; 25-Terminal; 3-Relay Device; 31-Hook; 32-Terminal; 4-Limit assembly; 41-Limit step; 410-First mounting part; 411-Horizontal section; 4110-Threaded hole; 412-Longitudinal section; 42-Second mounting part; 420-Side plate; 421-Mounting base; 422-Mounting rail; 423-Positioning boss; 424-Positioning groove; 43-Support; 431-Limiting boss; 44-Positioning component; 5-Fastener; 6-Sealing ring; 7-Contact plate; 71-Serrated structure; 72-Anti-slip indentation. Detailed Implementation

[0045] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0046] In this disclosure, unless otherwise stated, directional terms such as "inner" and "outer" are defined in relation to the outline of the corresponding components. The terms "first," "second," etc., are used to distinguish different components and are not sequential or significant. Furthermore, in the following description, when referring to the accompanying drawings, unless otherwise explained, the same reference numerals in different drawings denote the same or similar elements.

[0047] According to one embodiment of this disclosure, such as Figures 1 to 18 As shown, an electromagnetic starter is provided, including a housing 1, a contactor 2, a relay 3, and a limiting assembly 4. The housing 1 has a receiving cavity 10, and the contactor 2 is disposed within the receiving cavity 10. The relay 3 is disposed within the receiving cavity 10 and detachably connected to the contactor 2. The limiting assembly 4 can be disposed within the receiving cavity 10 and includes a support member 43 connected to the housing 1 and a positioning member 44 connected to the support member 43. The support member 43 is used to limit the relay 3 in a first direction, and the positioning member 44 is used to limit the contactor 2 in the first direction. The positioning member 44 can be located between the contactor 2 and the relay 3 in the first direction. Alternatively, the positioning member 44 can be located on one side of the contactor 2 in the first direction, and the positioning member 44 is sandwiched between the support member 43 and the relay 3. Here, the positioning member 44 can be connected to the support member 43 by bolts, and this disclosure does not limit this.

[0048] Through the above technical solution, when the relay 3 is large, the positioning member 44 can be positioned between the contactor 2 and the relay 3 in the first direction, in which case the positioning member 44 only limits the contactor 2. When the relay 3 is small, only the positioning member 44 can be replaced so that the positioning member 44 can not only limit the contactor 2, but also support the relay 3, facilitating the connection between the contactor 2 and the relay 3. In this way, by configuring positioning members 44 of different specifications and only replacing the positioning members 44, the electromagnetic starter can be adapted to relays of different specifications without processing other components in the housing 1. This can effectively improve the assembly speed and the versatility of the housing 1, reduce the types of electromagnetic starters to be manufactured and the types of spare parts, and reduce warehousing and management costs.

[0049] It should be noted that when the size of relay 3 is large, the first structure can be selected, such as... Figure 11 and Figure 12 As shown, the positioning element 44 only limits the contactor 2. When the relay 3 is smaller, a second type of positioning element 44 can be used, such as... Figure 13 and Figure 14 As shown, the positioning member 44 is sandwiched between the support member 43 and the relay 3. Thus, while the positioning member 44 limits the contactor 2 in the first direction, it can also support the relay 3, facilitating the connection between the contactor 2 and the relay 3. When using this type of positioning member 44, a strip-shaped protrusion can be formed on the surface of the positioning member 44 near the relay 3, and a groove can be formed on the relay 3 for mating, facilitating positioning and installation. This disclosure does not limit this aspect.

[0050] Furthermore, the support member 43 is sandwiched between the housing 1 and the relay 3. In the first direction, a limiting boss 431 for abutting against the relay 3 is formed on the side of the support member 43 away from the contactor 2. When the electromagnetic starter is installed vertically (i.e., Figure 4 (In the first direction, which is the height direction), the limiting boss 431 can abut against the bottom of the relay 3 to support and limit the relay 3. When the electromagnetic starter is installed horizontally (i.e., Figure 4 In the first direction (horizontal direction), the relay 3 can be placed above the support 43, and the limiting boss 431 can abut against the relay 3 in the horizontal direction and limit it. Alternatively, the support 43 can be structured as two parts, located on both sides of the relay 3 in the first direction to limit the relay 3. In the above-described scheme where the relay 3 is larger, the positioning member 44 can be connected only to the part of the support 43 near the contactor 2. This disclosure does not limit this aspect.

[0051] According to one embodiment of this disclosure, such as Figures 1 to 7As shown, the limiting component 4 is disposed within the receiving cavity 10. The limiting component 4 includes multiple limiting steps 41 connected to the housing 1 for limiting the contactor 2 in the second direction. A first mounting portion 410 is provided on each limiting step 41. The limiting component 4 also includes a second mounting portion 42 connected to the housing 1. The contactor 2 can be selectively mounted on either the first mounting portion 410 or the second mounting portion 42. Providing two mounting portions on the housing 1 allows for selection of the mounting method based on available space or maintenance requirements when installing the contactor 2, improving the versatility of the housing 1, reducing the types of electromagnetic starters and spare parts required, and lowering warehousing and management costs. Furthermore, the coordinated layout of the limiting steps 41 and the second mounting portion 42 also improves the utilization of the internal space of the housing 1, ensuring the limiting effect while avoiding interference problems caused by traditional single-fixation methods.

[0052] For the structure of limit step 41, such as Figure 2 and Figure 3 As shown, the limiting step 41 can be an L-shaped structure with a horizontal section 411 and a vertical section 412. The first mounting part 410 includes a threaded hole 4110 opened in the horizontal section 411, so that the contactor 2 can be fixed by bolts. At the same time, the vertical section 412 can be used to limit the contactor 2 in the second direction to limit the contactor 2. There can be multiple limiting steps 41, which are spaced apart, so that multiple bolts can be used to fix the contactor 2. The multiple limiting steps 41 can be located on both sides of the contactor 2 in the second direction, so that the vertical section 412 can also limit the contactor 2 on both sides in the second direction, thereby improving the limiting effect.

[0053] Regarding the structure of the second mounting section 42, such as Figures 2 to 7 As shown, the second mounting part 42 includes a mounting base 421 connected to the housing 1 and a mounting rail 422 detachably mounted to the mounting base 421. The contactor 2 is configured to be connected to the mounting base 421 via the mounting rail 422. The mounting base 421 has at least two positioning bosses 423, and the mounting rail 422 has positioning grooves 424 that mate with the positioning bosses 423 to position the mounting rail 422. After the mounting rail 422 is installed, the contactor 2 can be fastened onto the mounting rail 422 to complete the installation. Here, the mounting base 421 can have a structure with multiple cut-out areas to reduce the weight of the limiting component 4 while ensuring installation effectiveness.

[0054] Specifically, side plates 420 can be respectively provided at the opposite edges of the mounting rail 422. The contactor 2 can include a guide rail groove 21, an elastic element 22, and a slider 23. The guide rail groove 21 cooperates with the mounting rail 422 and includes a bottom wall 211 and two oppositely arranged mounting side walls 212. The mounting side walls 212 are provided with protrusions 213 opposite to the bottom wall 211. The side plates 420 are limited between the protrusions 213 and the bottom wall 211. The elastic element 22 is connected to one of the side walls 212, and the slider 23 is slidably connected to the mounting side wall 212 on the same side as the elastic element 22 and abuts against the elastic element 22. When the contactor 2 is engaged with the mounting rail 422, press down firmly on the slider 23 to move it and compress the elastic element 22. This engages one side plate 420 of the mounting rail 422 between the protrusion 213 and the bottom wall 211 on the side with the slider 23. Then, press the contactor 2 in, and the other side plate 420 will engage between the protrusion 213 and the bottom wall 211 on the other side. At this point, the slider 23 can be released, the elastic element 22 releases its elastic force, and the slider 23 moves, thus securing the mounting rail 422 for quick installation. It should be noted that the protrusion 213 on one side of the slider 23 can be larger in the first direction than the protrusion 213 on the other side, so that the side plate 420 can be engaged more easily when pressing the contactor 2. This disclosure does not limit this.

[0055] According to one embodiment of this disclosure, such as Figures 2 to 10 As shown, a hook 31 can be formed on the relay 3, and a hook groove 24 can be formed on the contactor 2. The connection between the two is achieved by the cooperation of the hook 31 and the hook groove 24. The contactor 2 has multiple terminals 25, and the relay 3 has terminals 32 that cooperate with the terminals 25 to achieve the electrical connection between the contactor 2 and the relay 3.

[0056] According to one embodiment of this disclosure, such as Figure 1 , Figure 5 and Figure 15 As shown, the housing 1 may include a first housing 11 and a second housing 12 that interlock with each other. The first housing 11 and the second housing 12 can be connected by fasteners 5 extending along their interlocking direction. The fasteners 5 can be bolts or screws. A sealing ring 6 is provided between the first housing 11 and the second housing 12, and the fasteners 5 are located outside the sealing ring 6. In this way, the mounting hole of the fastener 5 is not in communication with the receiving cavity 10. Even if water seeps in from the mounting hole of the fastener 5, it can be blocked by the sealing ring 6 and will not enter the receiving cavity 10, thereby giving the housing 1 a better waterproof effect.

[0057] Furthermore, such as Figure 15As shown, one of the first housing 11 and the second housing 12 may be provided with a sealing groove 121 for placing the sealing ring 6, and the other housing may have a sealing protrusion 111 that mates with the sealing groove 121. Specifically, the sealing groove 121 may be provided on the side of the second housing 12 closest to the first housing 11, and the sealing protrusion 111 may be formed on the first housing 11. When the first housing 11 and the second housing 12 are engaged, the sealing protrusion 111 abuts against the sealing ring 6, thereby improving the tightness of the engagement between the first housing 11 and the second housing 12, and providing better sealing protection for the components and structures within the receiving cavity 10.

[0058] It should be noted that, as Figure 3 and Figure 16 As shown, a mis-adjusting protrusion 112 is formed on one edge of the first housing 11, and a mis-adjusting groove 122 that mates with the mis-adjusting protrusion 112 is formed on the second housing 12. This asymmetrical structure prevents mis-assembly of the first housing 11 and the second housing 12. The mis-adjusting protrusion 112 can be formed adjacent to the mounting hole of the fastener 5, or it can be formed on the side where there is no mounting hole for the fastener 5; this disclosure does not limit this.

[0059] Regarding the mounting method between housing 1 and the outside, there are two possible methods, such as... Figure 3 and Figure 17 As shown, mounting ears can be formed on the outer periphery of the housing 1, and the mounting ears have first mounting holes 123 for connecting to the outside. A second mounting hole 124 for connecting to the outside can also be formed on one side wall of the housing 1. In this way, it can be installed from the inside or from the outside. Here, the second mounting hole 124 can be set as a knock-out structure. When not knocked out, it is in a blocked state. The housing 1 can be installed to the outside through the first mounting hole 123. When it is necessary to strengthen the installation structure or when it is impossible to install through the first mounting hole 123 due to space constraints, the second mounting hole 124 can be knocked out and installed to the outside through the second mounting hole 124. Taking the structure of the housing 1 being a structure in which the first housing 11 and the second housing 12 are fastened together as an example, the mounting ears and the second mounting hole 124 can be formed on the first housing or on the second housing 12. This disclosure does not limit this.

[0060] In the design where the mounting ear and the second mounting hole 124 are formed in the second housing 12, if the device is mounted externally via the first mounting hole 123 on the mounting ear, the contactor 2 and relay 3 can be assembled with the second housing 12 first, then the first housing 11 and the second housing 12 can be fastened together, and the electromagnetic starter can be fixed to the external device via the first mounting hole 123. If the device is mounted externally via the second mounting hole 124, after the contactor 2 and relay 3 are assembled with the second housing 12, the electromagnetic starter needs to be fixed to the external device via the second mounting hole 124 before the first housing 11 and the second housing 12 can be fastened together.

[0061] In addition, such as Figure 1 and Figure 3 As shown, the housing 1 may also be provided with a wiring hole 125 that can be knocked off as needed to allow external wiring to enter the receiving cavity 10. It should be noted that when installing after knocking off the wiring hole 125 and the second mounting hole 124, waterproof gaskets can be placed near the wiring hole 125 and the second mounting hole 124 to prevent water from entering the receiving cavity 10.

[0062] According to one embodiment of this disclosure, such as Figure 3 , Figure 10 as well as Figure 18 As shown, the housing 1 is also provided with multiple contact plate mounting slots 13 at intervals. The electromagnetic starter also includes contact plates 7 corresponding to the contact plate mounting slots 13 one by one. Here, the function of the contact plates 7 is to connect the grounding wire or the neutral wire. The edge of the contact plate 7 is formed with a serrated structure 71, which abuts against the contact plate mounting slot 13 for interference fit. The surface of the contact plate 7 may also be provided with multiple anti-slip indentations 72 to increase the friction of the contact plate 7 surface and improve the connection effect with the grounding wire or the neutral wire.

[0063] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0064] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0065] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. An electromagnetic starter, characterized in that, include: The shell has a receiving cavity; The contactor is disposed within the receiving cavity; A relay is disposed within the receiving cavity and is detachably connected to the contactor; and A limiting assembly, disposed within the receiving cavity, includes a support member connected to the housing and a positioning member connected to the support member. The support member is used to limit the relay in a first direction, and the positioning member is used to limit the contactor in the first direction. The positioning element is located between the contactor and the relay in the first direction; or The positioning element is located on one side of the contactor in the first direction, and the positioning element is sandwiched between the support and the relay.

2. The electromagnetic starter according to claim 1, characterized in that, The support member is sandwiched between the housing and the relay. In the first direction, a limiting boss is formed on the side of the support member away from the contactor for abutting against the relay.

3. The electromagnetic starter according to claim 1, characterized in that, The limiting assembly includes a plurality of limiting steps connected to the housing for limiting the contactor in a second direction, and a first mounting portion is provided on the limiting steps; the limiting assembly also includes a second mounting portion connected to the housing, wherein the contactor is selectively mounted on either the first mounting portion or the second mounting portion.

4. The electromagnetic starter according to claim 3, characterized in that, The limiting step has an L-shaped structure with a horizontal segment and a vertical segment. The first mounting part includes a threaded hole formed in the horizontal segment, and the vertical segment is used to limit the contactor in a second direction.

5. The electromagnetic starter according to claim 3, characterized in that, The second mounting portion includes a mounting base connected to the housing and a mounting rail detachably mounted to the mounting base, the contactor being configured to connect to the mounting base via the mounting rail. The mounting base has at least two positioning bosses, and the mounting rail has positioning grooves that mate with the positioning bosses.

6. The electromagnetic starter according to claim 1, characterized in that, The housing includes a first housing and a second housing that interlock with each other. The first housing and the second housing are connected by fasteners extending along their interlocking direction. A sealing ring is provided between the first housing and the second housing, and the fasteners are located outside the sealing ring.

7. The electromagnetic starter according to claim 6, characterized in that, One of the first housing and the second housing is provided with a sealing groove for placing a sealing ring, and the other housing is formed with a sealing protrusion that mates with the sealing groove. When the first housing and the second housing are engaged, the sealing protrusion is used to abut against the sealing ring.

8. The electromagnetic starter according to claim 6, characterized in that, A foolproof protrusion is formed on one edge of the first housing, and a foolproof groove is formed on the second housing to cooperate with the foolproof protrusion.

9. The electromagnetic starter according to claim 1, characterized in that, The outer periphery of the housing is formed with mounting ears, and the mounting ears are provided with first mounting holes for connection with the outside; and / or A second mounting hole for connection to the outside is provided on one side wall of the housing.

10. The electromagnetic starter according to claim 1, characterized in that, The housing is also provided with a plurality of contact plate mounting slots at intervals. The electromagnetic starter also includes contact plates that correspond one-to-one with the contact plate mounting slots. The edges of the contact plates are formed with serrated structures, which abut against the contact plate mounting slots for interference fit.

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