A casual dress lead type electromagnetic relay

Abstract

The present invention relates to the field of electronic control technology, and particularly to a convenient-to-install lead type electromagnetic relay, which includes a housing, an arc extinguishing unit, a closing unit, and two static contacts. The arc extinguishing unit and the closing unit are both arranged inside the housing. The two static contacts are installed inside the arc extinguishing unit and protrude out of the top of the housing through the arc extinguishing unit. The closing unit is used to conduct the two static contacts. The static contact is detachably provided with an extension piece, and an external thread for connecting with an external power connection piece is arranged on the outer side wall of the extension piece. The housing is provided with a lead groove, and a wire is arranged inside the lead groove. By providing the lead groove, the present invention enables the connection between the wire and the closing unit to be realized inside the housing, avoiding premature oxidation due to being exposed to the outside. In addition, the present invention also provides an extension piece on the static contact, which can be connected to the outside by means of welding or threaded connection, thereby making the assembly more convenient.

Description

Technical Field

[0001] The present invention relates to the field of electronic control technology, and particularly to a convenient-to-install lead type electromagnetic relay. Background Art

[0002] At present, the technology of relays has become mature, so the development direction of the relay field has changed to the stability of products and easy assembly. Existing relays have the following deficiencies: First, the lead is directly connected to the coil, resulting in the connection between the two being exposed and prone to oxidation. Second, the static contacts are generally externally connected by welding or winding, resulting in a single connection method and inconvenience in assembly. Summary of the Invention

[0003] The present invention provides a convenient-to-install lead type electromagnetic relay for the problems of the prior art, which can protect the connection between the lead and the connection unit and make the connection method of the static contacts more diverse.

[0004] To solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A convenient-to-install lead type electromagnetic relay provided by the present invention includes a housing, an electromagnetic unit, an arc extinguishing unit, a connection unit, and two static contacts. The arc extinguishing unit and the connection unit are both arranged in the housing. The two static contacts are installed in the arc extinguishing unit and protrude out of the top of the housing through the arc extinguishing unit. The electromagnetic unit is used to drive the connection unit to conduct the two static contacts. The static contact is detachably provided with an extension piece, and the outer side wall of the extension piece is provided with an external thread for connecting with an external power connection member. The housing is provided with a lead groove, and a wire is arranged in the lead groove. The wire is used to supply power to the electromagnetic unit.

[0006] Further, the top of the static contact is recessed inward to form an extension hole, and the inner side wall of the extension hole is provided with an internal thread for cooperating with the external thread.

[0007] Further, two connection holes are provided at the top of the housing, and the two static contacts are assembled in one-to-one correspondence with the two connection holes. A gasket is arranged between the static contact and the connection hole.

[0008] Further, the arc extinguishing unit includes a mounting frame, a ceramic shell, and two magnets. The mounting frame and the ceramic shell are both installed in the housing. The two magnets are both installed on the mounting frame. The ceramic shell is located between the two magnets, and the polarities of the ends of the two magnets close to each other are opposite. The bottoms of the two static contacts are both located in the ceramic shell, and the connection unit is used to connect the two static contacts in the ceramic shell.

[0009] Further, a plurality of baffles are arranged on the inner wall of the ceramic shell in a rectangular array, and the plurality of baffles cooperate to limit the connection unit so that the connection unit will not shift during the lifting process.

[0010] Preferably, a guiding inclined surface is arranged at the bottom of the side of the baffle close to the connection unit.

[0011] Further, the mounting bracket is provided with two mounting positions. The mounting positions include support blocks, top limit blocks and two side limit blocks. The magnet is located between the support blocks, the top limit blocks and the two side limit blocks, and the support blocks are used to support the magnet.

[0012] Further, a plurality of positioning grooves are arranged at the top of the mounting bracket, and a plurality of positioning bumps are arranged on the inner top wall of the housing. The positioning bumps and the positioning grooves are assembled in one-to-one correspondence;

[0013] The mounting bracket includes a mounting part and two arc extinguishing parts. The two arc extinguishing parts are respectively arranged at both ends of the mounting part. The mounting positions are arranged on the arc extinguishing parts, and the ceramic shell is located between the two arc extinguishing parts; the mounting part is provided with a plurality of mounting holes, and the mounting holes are used to cooperate with the housing to realize the suspended assembly of the mounting bracket.

[0014] Further, assembly parts are respectively arranged on both sides of the housing. The assembly parts are provided with assembly holes, and mounting rings are arranged in the assembly holes;

[0015] The mounting ring is made of metal, and a notch is arranged on the side of the mounting ring. The notch is used to be closed so that the outer diameter of the mounting ring is reduced and then placed into the assembly hole.

[0016] Further, a partition plate is arranged at the top of the housing. The partition plate is located between the two static contacts. The partition plate is used to separate the two static contacts and facilitate grasping.

[0017] Advantages of the present invention: By providing a lead wire groove, the connection between the wire and the connection unit is realized inside the housing, avoiding premature oxidation caused by being exposed to the outside; in addition, the present invention also provides an extension on the static contact, which can be connected to the outside by welding or threaded connection, thereby making the assembly more convenient. Description of the Drawings

[0018] Figure 1 is a schematic diagram of the present invention.

[0019] Figure 2 is a cross-sectional view of the present invention.

[0020] Figure 3 is Figure 2 the enlarged view of part A of

[0021] Figure 4 Schematic diagram of the bottom of the ceramic shell of the present invention.

[0022] Figure 5 Front view of the mounting bracket and the magnet of the present invention.

[0023] Figure 6 is Figure 5 top view of.

[0024] Reference numerals: 1 - housing, 2 - arc extinguishing unit, 3 - switching-on unit, 4 - static contact, 5 - extension piece, 6 - wire, 7 - electromagnetic unit, 11 - lead wire groove, 12 - connection hole, 13 - rubber pad, 14 - assembly part, 15 - assembly hole, 16 - mounting ring, 17 - notch, 18 - partition plate, 21 - mounting bracket, 22 - ceramic shell, 23 - magnet, 24 - mounting position, 41 - extension hole, 42 - internal thread, 51 - external thread, 211 - mounting part, 212 - arc extinguishing part, 213 - mounting hole, 214 - positioning groove, 221 - baffle plate, 222 - guiding inclined surface, 223 - arc drawing groove, 241 - support block, 242 - top limiting block, 243 - side limiting block, 244 - positioning mechanism, 245 - plug post, 246 - elastic member, 247 - extension part, 248 - gripping part. Detailed implementation manners

[0025] For the convenience of understanding by those skilled in the art, the present invention will be further described below in conjunction with embodiments and the accompanying drawings. The content mentioned in the implementation manners does not limit the present invention. The present invention will be described in detail below with reference to the accompanying drawings.

[0026] As Figures 1 to 6 shown, a convenient - mounting lead - type electromagnetic relay provided by the present invention includes a housing 1, an electromagnetic unit 7, an arc extinguishing unit 2, a switching - on unit 3 and two static contacts 4. The arc extinguishing unit 2 and the switching - on unit 3 are both arranged in the housing 1. The two static contacts 4 are installed in the arc extinguishing unit 2 and protrude out of the top of the housing 1 through the arc extinguishing unit 2. The electromagnetic unit 7 is used to drive the switching - on unit 3 to conduct the two static contacts 4. The static contact 4 is detachably provided with an extension piece 5, and an external thread 51 for connecting with an external power - connecting member is arranged on the outer side wall of the extension piece 5. The housing 1 is provided with a lead wire groove 11, and a wire 6 is arranged in the lead wire groove 11. The wire 6 is used to supply power to the electromagnetic unit 7.

[0027] By providing the lead wire groove 11, the present invention enables the connection between the wire 6 and the switching - on unit 3 to be realized inside the housing 1, avoiding premature oxidation caused by being exposed to the outside. In addition, the present invention also provides an extension piece 5 on the static contact 4, which can be connected with the outside by welding or thread - connecting methods, thus making the assembly more convenient.

[0028] In this embodiment, the top of the static contact 4 is recessed inward to form an extension hole 41, and the inner side wall of the extension hole 41 is provided with an internal thread 42 for mating with the external thread 51. That is, the static contact 4 and the extension member 5 are also connected by threads, enabling the staff to decide whether to remove the extension member 5 according to actual connection needs, and the threaded connection can also reduce the components connecting the extension member 5 and the static contact 4, making the structure of the present invention simpler.

[0029] In this embodiment, two connection holes 12 are provided at the top of the housing 1. The two static contacts 4 are assembled in one-to-one correspondence with the two connection holes 12, and a gasket 13 is provided between the static contact 4 and the connection hole 12. The inner diameter of the connection hole 12 is larger than the main diameter of the static contact 4 and smaller than the outer diameter of the head of the static contact 4, enabling the static contact 4 to be more conveniently installed into the housing 1 and protrude into the arc extinguishing unit 2; while the gasket 13 plays a sealing role, blocking the gap between the static contact 4 and the connection hole 12, ensuring that there is no gas flow between the inside of the arc extinguishing unit 2 and the outside, and ensuring that the static contact 4 is not oxidized too quickly due to the presence of oxygen inside the ceramic shell 22.

[0030] In this embodiment, the arc extinguishing unit 2 includes a mounting frame 21, a ceramic shell 22, and two magnets 23. The mounting frame 21 and the ceramic shell 22 are both installed in the housing 1, the two magnets 23 are both installed on the mounting frame 21, the ceramic shell 22 is located between the two magnets 23, and the ends of the two magnets 23 close to each other have opposite polarities; the bottoms of the two static contacts 4 are both located inside the ceramic shell 22, and the connection unit 3 is used to connect the two static contacts 4 inside the ceramic shell 22. By cooperating the ceramic shell 22 and the housing 1 to form a sealed space, the static contact 4 and the connection unit 3 are conducted or disconnected in this sealed space, so that when an arc is generated, the static contact 4 and the connection unit 3 will not be oxidized too quickly, achieving a protection effect; and the setting of the magnet 23 is used to stretch the arc through the magnetic field when the arc is generated, achieving the purpose of quickly extinguishing the arc.

[0031] Specifically, a plurality of baffles 221 are arranged in a rectangular array on the inner wall of the ceramic shell 22. The plurality of baffles 221 cooperate to limit the connection unit 3 so that the connection unit 3 will not shift during the lifting process. Preferably, a guiding inclined surface 222 is provided at the bottom of the side of the baffle 221 close to the connection unit 3.

[0032] That is, if the connection unit 3 shifts when rising, the connection unit 3 will contact the guiding inclined surface 222 on one of the baffles 221. At this time, as the connection unit 3 continues to rise, the connection unit 3 will gradually translate along the guiding inclined surface 222 to the correct path, ensuring that the connection unit 3 generally moves along the vertical direction, making the contact with the static contact 4 more reliable.

[0033] Specifically, the mounting frame 21 is provided with two mounting positions 24, the mounting position 24 includes a support block 241, a top stop block 242 and two side stop blocks 243, the magnet 23 is located between the support block 241, the top stop block 242 and the two side stop blocks 243, and the support block 241 is used to hold the magnet 23. The mounting frame 21 is made of metal, and the magnet 23 is not only mounted on the mounting frame 21 by magnetic connection, but also limited by the mounting position 24, so as to avoid the magnet 23 from being offset when the present invention is shaken or vibrated to a large extent, thereby affecting the arc extinguishing effect.

[0034] Specifically, the top limit block 242 is respectively provided with a positioning mechanism 244, and the top and bottom of the magnet 23 are respectively provided with sockets; the positioning mechanism 244 includes a plug post 245 and an elastic member 246, the plug post 245 is movably arranged in the top limit block 242, and the elastic member 246 is used to drive the plug post 245 to protrude out of the bottom of the top limit block 242 so that the plug post 245 is inserted into the socket; a yielding inclined surface is provided on the side of the plug post 245 away from the support frame.

[0035] The elastic member 246 is preferably a spring, and the elastic member 246 wraps around the periphery of the plug post 245. The side of the plug post 245 is provided with a resistance portion, and the two ends of the elastic member 246 are respectively connected to the resistance portion and the support block 241 or the top limit block 242, so that when the magnet 23 slides into the installation position 24, the plug post 245 is first forced to retreat to make way, and when the magnet 23 moves to its socket aligned with the plug post 245, the plug post 245 moves forward and is inserted into the socket under the action of the elastic member 246, thereby achieving the positioning effect of the magnet 23. The positioning on the upper and lower sides ensures that the magnet 23 will not be offset or detached from the mounting frame 21, so that the anti-interference performance is better and the automated assembly of the mounting frame 21 and the magnet 23 is more convenient.

[0036] Preferably, the positioning mechanism 244 also includes a positioning assembly, the positioning assembly includes an extension portion 247 and a gripping portion 248, the top limit block 242 is respectively provided with a slide groove, the extension portion 247 is connected to the plug post 245, the extension portion 247 is slidably arranged in the slide groove, and the gripping portion 248 is arranged in the extension portion. That is, when the present invention needs to recycle the magnet 23 due to scrapping, it is only necessary to grasp the gripping portion 248 to control the movement of the plug post 245, so that after the plug post 245 exits the socket, the magnet 23 can be separated from the mounting frame 21, achieving the effect of quick disassembly.

[0037] Specifically, a plurality of arc-drawing grooves 223 are respectively arranged on both sides of the ceramic shell 22, and the arc-drawing grooves 223 are located between the static contact 4 and the magnet 23. The arrangement of the plurality of arc-drawing grooves 223 is used to divide the arc into multiple segments and enter different arc-drawing grooves 223 when the magnet 23 elongates the arc, so as to make the arc extinguish faster and improve the arc extinguishing efficiency.

[0038] Specifically, a plurality of positioning grooves 214 are arranged on the top of the mounting frame 21, and a plurality of positioning bumps are arranged on the inner top wall of the housing 1. The positioning bumps and the positioning grooves 214 are assembled in one-to-one correspondence, so as to achieve the positioning and installation effect of the mounting frame 21 and ensure that the positions of the two magnets 23 correspond to the position of the static contact 4.

[0039] The mounting frame 21 includes a mounting portion 211 and two arc extinguishing portions 212. The two arc extinguishing portions 212 are respectively arranged at both ends of the mounting portion 211. The mounting position 24 is arranged on the arc extinguishing portion 212, and the ceramic shell 22 is located between the two arc extinguishing portions 212; a plurality of mounting holes 213 are arranged on the mounting portion 211, and the mounting holes 213 are used to cooperate with the housing 1 to realize the suspended assembly of the mounting frame 21. The mounting holes 213 are assembled with the housing 1 by screws or other means, so that the mounting frame 21 is suspended so that the magnets 23 are located outside the two static contacts 4, ensuring the arc extinguishing effect.

[0040] In this embodiment, assembly portions 14 are respectively arranged on both sides of the housing 1. The assembly portions 14 are provided with assembly holes 15, and mounting rings 16 are arranged in the assembly holes 15; the mounting rings 16 are made of metal, and a notch 17 is arranged on the side of the mounting ring 16. The notch 17 is used to be closed so that the outer diameter of the mounting ring 16 is reduced and then placed into the assembly hole 15. Since the housing 1 is mostly made of plastic, which is beneficial to cost savings, and the assembly holes 15 of the plastic are easily worn or damaged excessively during fixation, the present invention arranges the mounting rings 16 in the assembly holes 15 to avoid the direct contact between the assembly holes 15 and external components, thereby avoiding excessive wear or damage to the assembly holes 15 and making the fixation of the present invention by the staff more efficient.

[0041] The arrangement of the notch 17 is such that when the mounting ring 16 is assembled, the outer diameter of the mounting ring 16 can be reduced to be small enough to be placed into the assembly hole 15, and after being placed into the assembly hole 15, it contacts the inner side wall of the assembly hole 15 due to the self-recovery deformation characteristic of the mounting hole 213, ensuring that there is an interaction force between the assembly hole 15 and the mounting ring 16 and preventing the mounting ring 16 from falling out of the assembly hole 15.

[0042] In this embodiment, a partition plate 18 is provided at the top of the housing 1. The partition plate 18 is located between two stationary contacts 4. The partition plate 18 is used to separate the two stationary contacts 4 and facilitate grasping. This partition plate is used to separate the two stationary contacts 4 to prevent short circuit or connection due to arc between the two stationary contacts 4, thus ensuring safety. In addition, the partition plate 18 is also used to enable grasping of the partition plate 18 when it is necessary to pick up the present invention, making the grasping more stable and convenient.

[0043] The above are only preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention is disclosed above in preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art, without departing from the scope of the technical solution of the present invention, when making some changes or modifications using the disclosed technical content as equivalent embodiments of equivalent changes, but as long as they do not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical solution of the present invention shall fall within the scope of the technical solution of the present invention.

Claims

1. A casual lead type electromagnetic relay, characterized in that: The invention comprises a housing, an electromagnetic unit, an arc extinguishing unit, a connection unit and two static contacts, wherein the arc extinguishing unit and the connection unit are both arranged in the housing, the two static contacts are installed in the arc extinguishing unit and protrude from the top of the housing through the arc extinguishing unit, and the electromagnetic unit is used to drive the connection unit to conduct the two static contacts; the static contact is detachably provided with an extension piece, and the outer side wall of the extension piece is provided with an external thread for connecting with an external power connection piece; the housing is provided with a lead groove, and a wire is arranged in the lead groove, and the wire is used to supply power to the electromagnetic unit; The arc extinguishing unit comprises a mounting frame and a ceramic shell, and the mounting frame and the ceramic shell are both installed in the housing; The mounting frame is provided with two mounting positions, the mounting positions include a support block, a top limit block and two side limit blocks, the magnet is located between the support block, the top limit block and the two side limit blocks, and the support block is used to hold the magnet; The top limit blocks are respectively provided with positioning mechanisms, and the top and bottom of the magnets are respectively provided with insertion holes; the positioning mechanisms include a plug post and an elastic member, the plug post is movably arranged in the top limit block, and the elastic member is used to drive the plug post to protrude out of the bottom of the top limit block so that the plug post is inserted into the insertion hole; The elastic member is a spring, which wraps around the periphery of the plug column. A resistance portion is provided on the side of the plug column, and two ends of the elastic member are respectively connected to the resistance portion and the top limit block; The positioning mechanism also includes a positioning component, which includes an extension part and a grabbing part. The top limit blocks are respectively provided with sliding grooves, the extension part is connected to the plug column, the extension part is slidably arranged in the sliding groove, and the grabbing part is arranged on the extension part.

2. The casual lead type electromagnetic relay according to claim 1, wherein: The top of the stationary contact is recessed inward to form an extension hole, and the inner side wall of the extension hole is provided with an internal thread for matching with the external thread.

3. The casual lead type electromagnetic relay according to claim 1, characterized in that: The top of the shell is provided with two connection holes, and the two stationary contacts are assembled in one-to-one correspondence with the two connection holes, and a rubber pad is provided between the stationary contacts and the connection holes.

4. The informal-lead electromagnetic relay according to claim 1, wherein: The arc extinguishing unit includes two magnets, both of which are mounted on the mounting frame, the ceramic shell is located between the two magnets, and the polarities of the two magnets close to each other are opposite; the bottoms of the two static contacts are both located in the ceramic shell, and the connection unit is used to connect the two static contacts in the ceramic shell.

5. The casual lead type electromagnetic relay according to claim 4, characterized in that: The inner wall of the ceramic shell is provided with a plurality of baffles in a rectangular array, and the plurality of baffles cooperate to limit the connection unit so that the connection unit will not deviate during the lifting process.

6. The informal-lead electromagnetic relay according to claim 5, wherein: A guiding slope is arranged at the bottom of one side of the baffle plate close to the connection unit.

7. The informal-lead electromagnetic relay according to claim 4, characterized in that: The top of the mounting frame is provided with a plurality of positioning grooves, the inner top wall of the shell is provided with a plurality of positioning protrusions, and the positioning protrusions are assembled one by one with the positioning grooves; The mounting frame includes a mounting portion and two arc extinguishing portions, the two arc extinguishing portions are respectively arranged at two ends of the mounting portion, the mounting position is arranged at the arc extinguishing portion, and the ceramic shell is located between the two arc extinguishing portions; the mounting portion is provided with a plurality of mounting holes, and the mounting holes are used to cooperate with the shell to realize the suspended assembly of the mounting frame.

8. The informal-lead type electromagnetic relay according to claim 1, wherein: The two sides of the shell are respectively provided with assembly parts, the assembly parts are provided with assembly holes, and the assembly holes are provided with mounting rings; The mounting ring is made of metal, and a notch is provided on the side of the mounting ring. The notch is used to be closed so that the outer diameter of the mounting ring is reduced and then placed into the assembly hole.

9. The informal-lead type electromagnetic relay according to claim 1, wherein: A partition plate is provided at the top of the housing. The partition plate is located between two static contacts and is used to separate the two static contacts and facilitate grasping.

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