Patent Grant
10490380
The present application is based on International Application No. PCT/CN2016/097353, filed on Aug. 30, 2016, which claims priority to and benefits of Chinese Patent Application No. 201510546556.5, filed with the State Intellectual Property Office (SIPO) of the People's Republic of China on Aug. 31, 2015, and Chinese Patent Application No. 201520671874.X, filed with the State Intellectual Property Office (SIPO) of the People's Republic of China on Aug. 31, 2015, the entire contents of which are hereby incorporated by reference.
The present disclosure relates to a technology field of relay, and more specifically, to a relay.
Electrical connection between two connecting contacts of a relay in the related art is implemented by using a copper plate having a specific thickness, and when a current in an external circuit is excessively high, since the relay does not has an overload protection function, a component of a load circuit is easy to be damaged and has extremely low security. Further, the relay in the related art does not have an arc-extinguishing function and has a poor internal insulating capability, and a damage or breakdown phenomenon may easily occur in an element at a low-voltage end of the relay, which greatly shortens a service life of a device.
In addition, in a use process of the relay in the related art, it is necessary to additionally apply a protection apparatus, for example, an individual fuse apparatus, in a peripheral circuit where the relay is located, and the individually assembled fuse apparatus not only increases an amount of usage of electrical components in the circuit, but also needs a large installation space at the same time.
The present disclosure aims at solving one of the technical problems in the related art to some extent. Therefore, the present disclosure provides a relay, which has a simple structure, and high reliability and security.
A relay according to embodiments of the present disclosure includes an insulating housing, two binding posts, an insulating plate, a fuse, a mounting base, and a push rod. The insulating housing defines an accommodating cavity therein, the accommodating cavity is open at one end thereof, the two binding posts is spaced apart from each other and disposed to the insulating housing, and an end of each of the two binding posts extends into the accommodating cavity. The insulating plate is disposed within the accommodating cavity, movable between a first position and a second position, and has two connecting contacts spaced apart from each other and disposed on a first side of the insulating plate facing the binding posts, and the two connecting contacts are corresponding to the two binding posts in terms of position respectively. The fuse is disposed between the two connecting contacts, and two ends of the fuse are electrically connected to the two connecting contacts respectively. The mounting base is connected to the insulating housing, and the push rod is movably disposed to the mounting base and connected to the insulating plate to push the insulating plate to move between the first position and the second position. When the insulating plate is located at the first position, the two connecting contacts abut against the two binding posts respectively, and when the insulating plate is located at the second position, the two connecting contacts detach from the two binding posts respectively.
With the relay according to the embodiments of the present disclosure, the fuse is disposed between two connecting contacts of the insulating plate, not only an electrical connection between the two connecting contacts can be implemented, so as to ensure that an external circuit implements an electrical connection thereof (i.e., the external circuit is switched on) when the connecting contacts are connected to the binding posts, but also can an overload protection function on the external circuit be realized, so as to prevent an electrical device of the external circuit form being burnt and damaged when a current therein is extremely high or the external circuit short-circuits, thus improving reliability and security of a system and effectively prolonging a service life of the electrical device. In addition, in the relay of the present disclosure, the fuse is combined with the relay, which not only reduces the number of electrical elements in the circuit, but also saves an installation space.
Some of the additional aspects and advantages of the present disclosure are provided in the description below, and some become obvious in the description below or are learned by means of practices of the present disclosure.
Embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in accompanying drawings. The following embodiments described by referring to the accompanying drawings are illustrative, aim at explaining the present disclosure, and should not be interpreted as limitations to the present disclosure.
A relay 100 according to embodiments of the present disclosure will be described in detail below by referring to
The relay 100 according to the embodiments of the present disclosure includes an insulating housing 10, an insulating plate 20, a fuse 30, and a mounting base 40. Specifically, the insulating housing 10 defines an accommodating cavity 11 therein, the accommodating cavity 11 is open at one end thereof, the insulating housing 10 is provided with two binding posts 12 spaced apart from each other, and an end of each of the two binding posts 12 extends into the accommodating cavity 11. The insulating plate 20 is disposed within the accommodating cavity 11, movable between a first position (a position state as shown in
When the insulating plate 20 is located at the first position, the two connecting contacts 21 abut against the two binding posts 12 respectively, and when the insulating plate 20 is located at the second position, the two connecting contacts 21 detach from the two binding posts 12. The fuse 30 is disposed between the two connecting contacts 21, and two ends of the fuse 30 are electrically connected to the two connecting contacts 21 respectively. The mounting base 40 is connected to the insulating housing 10, a push rod 41 is movably disposed to the mounting base 40, and connected to the insulating plate 20 to push the insulating plate 20 to move between the first position and the second position.
In other words, the relay 100 is mainly constituted by the insulating housing 10, the insulating plate 20, the fuse 30, and the mounting base 40. Specifically, as shown in
In some embodiments, the mounting base 40 includes a connection platform 401, a sleeve 402, and a supporting plate 403. The supporting plate 403 is configured as a plate body extending along the horizontal direction, and the connection platform 401 is disposed on the supporting plate 403 and is connected to an upper surface of the supporting plate 403. The sleeve 402 is disposed under the supporting plate 403, and an upper end of the sleeve 402 is connected to a lower surface of the supporting plate 403. A rod body (i.e., the push rod 41) extending along a vertical direction (an up-down direction as shown in
When the relay 100 is in a normal working process, the two binding posts 12 of the relay 100 are connected to two ends of an external circuit respectively, and the two binding posts 12 on the insulating housing 10 and the two connecting contacts 21 of the insulating plate 20 switch between the pickup state and the detached state respectively, thereby switching on or off the external circuit. Specifically, as shown in
Hence, with the relay 100 according to embodiments of the present disclosure, the fuse 30 is disposed between the two connecting contacts 21 of the insulating plate 20, not only the electrical connection between the two connecting contacts 21 can be implemented, so as to ensure that the electrical connection of the external circuit is implemented (i.e., the external circuit is switched on) when the two connecting contacts 21 are connected to the two binding posts 12, but also can the overload protection function on the external circuit be realized, so as to prevent the electrical device of the external circuit from being burnt and damaged when a current therein is extremely high or the external circuit short-circuits, thus improving reliability and security of a system and effectively prolonging a service life of the electrical device. In addition, in the relay 100 of the present disclosure, the fuse 30 is combined within the relay 100, which not only reduces the number of electrical elements in the circuit, but also saves an installation space.
Further, the mounting base 40 is connected to the insulating housing 10 and seals the accommodating cavity 11, and the accommodating cavity 11 is filled with an arc-extinguishing gas (not shown). It should be understood that the accommodating cavity 11 is full of the arc-extinguishing gas, which coats components, such as the binding post 12, the connecting contact 21, and the fuse 30, within the accommodating cavity 11, thereby implementing an arc-extinguishing function and preventing the electrical device of the external circuit from being burnt and damaged.
As shown in
That is, an upper side of the insulating plate 20 is provided with multiple mounting grooves 221 spaced apart from each other along the length direction (a left-right direction as shown in
Optionally, as shown in
Further, the insulating plate 20 is provided with multiple through holes 23 that run through the insulating plate 20 along a thickness direction (an up-down direction as shown in
When the relay 100 is working, the fuse 30 generates an electrical arc in a normal working process, and in this case, by providing the arc-extinguishing grids 22 on the first side, facing the binding posts 12, of the insulating plate 20, the arc-extinguishing grid 22 and the through hole 23 can divide the electrical arc into multiple segments, and meanwhile, under the effect of the arc-extinguishing gas around, the electrical arc can be quickly extinguished, thereby effectively prolonging a service life of the relay 100.
In some embodiments of the present disclosure, the fuse 30 is configured as a sheet extending along the length direction of the insulating plate 20, the fuse 30 includes multiple bending portions 32 spaced apart from or adjacent to each other in a length direction thereof, and each bending portion 32 is configured to have a rectangle shape, a triangle shape, or a trapezoid shape.
Specifically, as shown in
However, in the related art, two connecting contacts are electrically connected to each other by a copper plate having a specific thickness, which has low security. With the relay 100 according to embodiments of the present disclosure, the fuse 30 is disposed between the two connecting contacts 21 of the insulating plate 20, not only the electrical connection between the two connecting contacts 21 can be implemented, so as to ensure that electrical connection of the external circuit is implemented (i.e., the external circuit is switched on) when the two connecting contacts 21 are connected to the two binding posts 12, but also can an overload protection function on the external circuit be realized, so as to prevent an electrical device of the external circuit from being burnt and damaged when a current therein is extremely high or the external circuit short-circuits, thus improving reliability and security of a system and effectively prolonging a service life of the electrical device.
As shown in
Specifically, as shown in
A limiting post 421 is disposed within the mounting cavity 42, and the limiting post 421 is located between the core 50 and a top wall of the mounting base 40 and abuts against the top wall of the mounting base 40. Specifically, the limiting post 421 is located between the core 50 and the supporting plate 403 of the mounting base 40 and abuts against the supporting plate 403 of the mounting base 40. A reset spring 422 is disposed between the limiting post 421 and the core 50, and two ends of the reset spring 422 respectively abut against the core 50 and the limiting post 421.
In other words, the limiting post 421 is provided at a side, adjacent to the supporting plate 403, of the mounting cavity 42, the limiting post 421 is fixedly connected to the supporting plate 403, and the core 50 is also disposed within the mounting cavity 42 and is located below the limiting post 421. Specifically, the reset spring 422 is disposed between the limiting post 421 and the core 50, and when the coil is powered off, the core 50 moves downward (i.e., the core 50 moves from the position state in
Optionally, an upper end and a lower end of the reset spring 422 are connected to the limiting post 421 and the core 50 respectively. As shown in
Advantageously, according to an embodiment of the present disclosure, a buffering member 25 is disposed between the mounting frame 24 and the push rod 41, and two ends of the buffering member 25 abut against the mounting frame 24 and the push rod 41 respectively.
Specifically, as shown in
In an assembling process of the relay 100, the two connecting contacts 21 may be first welded to the upper surface of the insulating plate 20, then two ends of the fuse 30 are welded to and connected to the two connecting contacts 21 respectively, after that, the buffering member 25 is mounted on the abutting portion 411 of the push rod 41, and the upper end of the push rod 41 is enabled to penetrate through the mounting hole 241 of the mounting frame 24. Subsequently, the washer 413 and the circlip 414 are assembled to the push rod 41 in sequence, and the circlip 414 is disposed within the clamping slot 412 in the upper end of the push rod 41 in a clamping manner. Finally, the supporting plate 403, the reset spring 422, and the core 50 are mounted in sequence to complete assembling of the relay 100. The relay 100 has a simple structure and can be conveniently disassembled and assembled.
Optionally, according to an embodiment of the present disclosure, the insulating housing 10 and the insulating plate 20 are made of ceramic, that is, the insulating housing 10 and the insulating plate 20 both are ceramic members. The two binding posts 12, the connecting contacts 21 and the push rod 41 are respectively disposed at upper and lower sides of the insulating plate 20 made of ceramic materials, i.e., the two binding posts 12 and the connecting contacts 21 are disposed at the upper side of the insulating plate 20 made of ceramic materials, and the push rod 41 is disposed at the lower side of the insulating plate 20 made of ceramic materials, so as to isolate the push rod 41 from a high-voltage load, which implements a high-voltage insulating function and avoids an element at a low-voltage end from being damaged or broken down, thereby improving reliability and security of the relay 100.
In addition, the relay 100 further includes an external arc-extinguishing cover 60 and a magnet 70. The external arc-extinguishing cover 60 is disposed on a peripheral wall of the insulating housing 10, and the magnet 70 is disposed between the external arc-extinguishing cover 60 and the insulating housing 10. When the relay 100 is working, the fuse 30 generates an electrical arc in a normal working process, and under a magnetic field of the magnet 70, the electrical arc may be lengthened. In this case, by disposing the arc-extinguishing grids 22 on the side, facing the binding posts 12, of the insulating plate 20, the electrical arc may be divided into multiple segments by the arc-extinguishing grid 22. Meanwhile, under the comprehensive effect of the arc-extinguishing gas around and the external arc-extinguishing cover 60, the electrical arc can be extinguished quickly, thereby effectively prolonging a service life of the relay 100 and greatly improving security and reliability of the relay 100.
Other components of and operations on the relay 100 according to embodiments of the present disclosure are obvious to those ordinary skilled in the art, and thus detailed description thereof will be omitted herein.
In the description of the present disclosure, it should be understood that, location or position relationships indicated by the terms, such as “center”, “longitude”, “transverse”, “length”, “width”, “thickness”, “up”, “down”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “within”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, and “circumferential” are location or position relationships based on illustration of the accompanying drawings, are merely used for describing the present disclosure and simplifying the description instead of indicating or implying the indicated apparatuses or elements should have specified locations or be constructed and operated according to specified locations, and therefore, should not be intercepted as limitations to the present disclosure.
In addition, the terms such as “first” and “second” are used merely for the purpose of description, but shall not be construed as indicating or implying relative importance or implicitly indicating a number of the indicated technical feature. Hence, the feature defined with “first” and “second” may explicitly or implicitly include at least one of the features. In the description of the present disclosure, unless otherwise explicitly specifically defined, “multiple” means at least two, for example, two or three.
In the present disclosure, unless otherwise explicitly specified or defined, the terms such as “mount”, “connect”, “connection”, and “fix” should be interpreted in a broad sense. For example, a connection may be a fixed connection, or may be a detachable connection or an integral connection; a connection may be a mechanical connection, or may be an electrical connection; a connection may be a mechanical connection, or may be an electrical connection, or may be used for intercommunication; a connection may be a direct connection, or may be an indirect connection via an intermediate medium, or may be communication between interiors of two elements or an interaction relationship between two elements, unless otherwise explicitly defined. It may be appreciated by those of ordinary skill in the art that the specific meanings of the aforementioned terms in the present disclosure can be understood depending on specific situations.
In the present disclosure, unless otherwise explicitly specified or defined, a first feature being “above” or “below” a second feature may be that the first and second features are in direct contact or that the first and second features in indirect contact by means of an intermediate medium. In addition, the first feature being “over”, “above” or “on the top of” a second feature may be that the first feature is over or above the second feature or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being “underneath”, “below” or “on the bottom of” a second feature may be that the first feature is underneath or below the second feature or merely indicates that the horizontal height of the first feature is lower than that of the second feature.
In the descriptions of this specification, a description of a reference term such as “an embodiment”, “some embodiments”, “examples”, “specific examples”, or “some examples” means that a specific feature, structure, material, or characteristic that is described with reference to the embodiment or the example is included in at least one embodiment or example of the present disclosure. In this specification, exemplary descriptions of the foregoing terms do not necessarily refer to a same embodiment or example. In addition, the described specific feature, structure, material, or characteristic may be combined in a proper manner in any one or more embodiments or examples. Moreover, if there is no contradiction, those skilled in the art can joint and combine different embodiments or examples described in the description and features of different embodiments or examples.
Although the embodiments of the present disclosure have been shown and described, those of ordinary skill in the art can understand that multiple changes, modifications, replacements, and variations may be made to these embodiments without departing from the principle and purpose of the present disclosure.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2015 1 0546556 | Aug 2015 | CN | national |
| 2015 2 0671874 U | Aug 2015 | CN | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2016/097353 | 8/30/2016 | WO | 00 |
| Publishing Document | Publishing Date | Country | Kind |
|---|---|---|---|
| WO2017/036380 | 3/9/2017 | WO | A |
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| 103117198 | May 2013 | CN |
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| International Search Report from PCT/CN2016/097353 dated Nov. 28, 2016 (2 pages). |
| Number | Date | Country | |
|---|---|---|---|
| 20180197710 A1 | Jul 2018 | US |
