CN115132524A - Relay with series and parallel contacts controlled by double electromagnetic loops - Google Patents
Relay with series and parallel contacts controlled by double electromagnetic loops Download PDFInfo
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- CN115132524A CN115132524A CN202210884091.4A CN202210884091A CN115132524A CN 115132524 A CN115132524 A CN 115132524A CN 202210884091 A CN202210884091 A CN 202210884091A CN 115132524 A CN115132524 A CN 115132524A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/18—Movable parts of magnetic circuits, e.g. armature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/44—Magnetic coils or windings
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Relay Circuits (AREA)
Abstract
The invention discloses a relay controlled by double electromagnetic loops and provided with series and parallel contacts, which comprises a contact group A, a contact group B, a contact group C, a contact group D, a first coil driving component and a second coil driving component, wherein the contact group A and the contact group B are connected in parallel to form a first contact group, the contact group C and the contact group D are connected in parallel to form a second contact group, and the first contact group and the second contact group are connected in series; the first coil driving assembly is used for driving the first contact group to be switched on and switched off, and the second coil driving assembly is used for driving the second contact group to be switched on and switched off. According to the invention, four groups of contact groups are arranged, every two contact groups are connected in parallel and then connected in series, and the two contact groups connected in series are driven by the independent coil driving mechanism, so that the fracture of each contact group needs to bear the total loop voltage, which is reduced from original 1/2 to 1/4, and the opening and closing time sequence of each group of hoe groups can be controlled more flexibly through independent control, and the device has higher flexibility and controllability.
Description
Technical Field
The invention relates to a relay, in particular to a relay with series and parallel contacts controlled by double electromagnetic loops.
Background
A relay is an electric control device that generates a predetermined step change in a controlled amount in an electric output circuit when a change in an input amount (excitation amount) meets a predetermined requirement. It has an interactive relationship between a control system (also called an input loop) and a controlled system (also called an output loop). It is commonly used in automated control circuits, which are actually a "recloser" that uses low current to control high current operation. Therefore, the circuit has the functions of automatic regulation, safety protection, circuit conversion and the like.
The existing electromagnetic relay generally adopts a coil driving component to carry out suction and release control, when the relay works, the suction of an armature iron and a yoke iron is realized by supplying power to the coil component, and on the basis, the suction or release action of a movable contact and a fixed contact is realized by arranging the movable contact and the fixed contact in the directions.
With the development of new energy industry, the demand on system voltage is higher and higher, but the traditional contactor only has a group of moving contact and static contact loops, the current is cut off or switched on through two fractures, and according to the voltage division principle of a series loop, each fracture needs to bear 1/2 about the total loop voltage, which causes great difficulty in arc extinguishing during releasing. Meanwhile, as one contact resistor exists between every two fractures, the two fractures form 2 times of contact resistance value according to a resistance calculation formula of a series circuit, and the power consumption and the temperature rise effect of a product are seriously influenced.
Disclosure of Invention
To overcome the above-mentioned drawbacks, the present invention provides a relay with series and parallel contacts controlled by a dual electromagnetic circuit.
The technical scheme adopted by the invention for solving the technical problem is as follows: a relay controlled by double electromagnetic loops and provided with series and parallel contacts comprises a contact group A, a contact group B, a contact group C, a contact group D, a first coil driving assembly and a second coil driving assembly, wherein the contact group A and the contact group B are connected in parallel to form a first contact group, the contact group C and the contact group D are connected in parallel to form a second contact group, and the first contact group and the second contact group are connected in series; the first coil driving assembly is used for driving the contact group A and the contact group B in the first contact group to be switched on and switched off, and the second coil driving assembly is used for driving the contact group C and the contact group D in the second contact group to be switched on and switched off.
As a further improvement of the invention, the contact group A, the contact group B, the contact group C and the contact group D respectively consist of two movable contacts which are electrically connected into a whole and a fixed contact which is correspondingly arranged below the two movable contacts.
As a further improvement of the present invention, the contact group a and the contact group B are symmetrically arranged, and the contact group C and the contact group D are symmetrically arranged.
As a further improvement of the present invention, two moving contacts of the contact group a are respectively disposed at two ends of the moving contact a, two moving contacts of the contact group B are respectively disposed at two ends of the moving contact B, one of the stationary contacts of the contact group a and one of the stationary contacts of the contact group B are respectively disposed on the first stationary terminal, and the other of the stationary contacts of the contact group a and the other of the stationary contacts of the contact group B are respectively disposed on one end of the second stationary terminal; the two moving contacts of the contact group C are respectively arranged at two ends of the moving contact piece C, the two moving contacts of the contact group D are respectively arranged at two ends of the moving contact piece D, one of the fixed contacts of the contact group C and one of the fixed contacts of the contact group D are respectively arranged at the other end of the second fixed terminal, and the other fixed contact of the contact group C and the other fixed contact of the contact group D are respectively arranged at one end of the third fixed terminal.
As a further improvement of the present invention, the first coil driving component and the second coil driving component have the same structure.
As a further improvement of the present invention, the first coil driving assembly includes a bracket, a coil assembly fixed on one side surface of the bracket, an armature having one end disposed outside one end surface of the coil assembly and the other end bent in an L shape toward the other side surface of the bracket, and a connecting member for connecting the other end of the armature to a movable contact a and a movable contact B to be driven, and a return spring disposed between the armature and the bracket to make the armature have a force opposite to a force of attraction of the coil assembly; wherein, the armature is connected with the bracket in a rotating way and forms a rotating fulcrum at the joint.
As a further improvement of the invention, the coil component comprises a coil framework, a coil bundle wound on the coil framework and a magnetizer positioned at the axis of the coil framework.
As a further improvement of the invention, the two side positions of the armature iron between the rotating fulcrum and the L-shaped bent part thereof are respectively provided with a first spring hook, meanwhile, the two sides of the middle part of the bracket are respectively provided with a corresponding second spring hook, and the two ends of the return spring are respectively fixed on the first spring hook and the second spring hook.
As a further improvement of the present invention, one end of the bracket away from the armature extends perpendicularly to the direction of the other end face of the coil assembly, and the coil assembly is fixed on the bracket through the coil bracket.
The invention has the beneficial effects that: according to the invention, four groups of contact groups are arranged, every two contact groups are connected in parallel and then connected in series, and the two contact groups connected in series are driven by the independent coil driving mechanism, so that the fracture of each contact group needs to bear the total loop voltage, which is reduced from original 1/2 to 1/4, and the opening and closing time sequence of each group of hoe groups can be controlled more flexibly through independent control, and the device has higher flexibility and controllability.
Drawings
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1 from another view angle;
FIG. 3 is a schematic view of a portion of a contact set according to the present invention;
fig. 4 is a partial structural schematic diagram of fig. 3.
The following description is made with reference to the accompanying drawings:
11. a contact group A; 12. a contact group B; 13. a contact group C; 14. a contact group D; 21. a first coil drive assembly; 22. a second coil drive assembly; 31. a first stationary terminal; 32. a second stationary terminal; 33. a third stationary terminal; 41. a movable contact spring A; 42. a movable contact piece B; 43. a movable contact spring C; 44. a movable contact spring D; 211. a support; 222. a coil assembly; 213. an armature; 214. a connecting member; 2131. a first spring hook; 2111. and a second spring hook.
Detailed Description
A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1 to 4, the relay with series and parallel contacts controlled by a dual electromagnetic circuit according to the present invention includes a contact group a11, a contact group B12, a contact group C13, a contact group D14, a first coil driving module 21, and a second coil driving module 22. The contact group A11 and the contact group B12 are connected in parallel to form a first contact group, the contact group C13 and the contact group D14 are connected in parallel to form a second contact group, and the first contact group and the second contact group are connected in series. The first coil driving assembly 21 is used for driving the contact group a11 and the contact group B12 in the first contact group to be switched on and switched off simultaneously, and the second coil driving assembly 22 is used for driving the contact group C13 and the contact group D14 in the second contact group to be switched on and switched off simultaneously.
That is, the present invention provides four contact sets, the contact set a and the contact set B are connected in parallel to form a first contact set, the contact set C and the contact set D are connected in parallel to form a second contact set, the first contact and the second contact set are connected in series, and the first contact set and the second contact set are driven by different coil driving mechanisms respectively. In such a configuration, assuming that there is one contact resistance R for each disconnection, it can be found by calculation from the formula that the contact resistance of the contact group a is 2R and the contact resistance of the contact group B is 2R, and after parallel connection, the contact resistance of the first contact group is 2R × 2R/(2R +2R) ═ R.
The contact resistance of the second contact set is also R as above. The first contact set and the second contact set are arranged in series, and the total contact resistance is 2R.
From the above calculation, the total contact resistance of such parallel + series mode is 2R, which is equal to the contact resistance of a single contact group (2 fractures). Meanwhile, as 4 fractures in series are arranged in the loop, each fracture only needs to bear 1/4 of the total loop voltage according to the voltage division principle of the series circuit.
Compared with the existing structure, the loop voltage born by each fracture can be reduced by half, so that the electric arc can be extinguished easily, the total contact resistance is not increased, the power consumption of the product is reduced under the same condition, and the temperature rise effect is improved.
In order to make the structure more compact, the contact group a11, the contact group B12, the contact group C13 and the contact group D14 of the present invention are respectively composed of two moving contacts electrically connected as a whole and a fixed contact correspondingly arranged below the two moving contacts, and refer to fig. 3-4. The contact group A11 and the contact group B12 are symmetrically arranged, and the contact group C13 and the contact group D14 are symmetrically arranged.
Further, referring to fig. 3, two moving contacts of the contact group a11 are respectively disposed at both ends of the moving contact piece a41, two moving contacts of the contact group B12 are respectively disposed at both ends of the moving contact piece B42, one of the stationary contacts of the contact group a11 and one of the stationary contacts of the contact group B12 are respectively disposed on the first stationary terminal 31, and the other of the stationary contacts of the contact group a11 and the other of the stationary contacts of the contact group B12 are respectively disposed on one end of the second stationary terminal 32; two movable contacts of a contact group C13 are respectively arranged at two ends of the movable contact piece C43, two movable contacts of the contact group D14 are respectively arranged at two ends of the movable contact piece D44, one of the fixed contacts of the contact group C13 and one of the fixed contacts of the contact group D44 are respectively arranged at the other end of the second fixed terminal 32, and the other fixed contact of the contact group C13 and the other fixed contact of the contact group D14 are respectively arranged at one end of the third fixed terminal 33. Thus, the contact group a11 and the contact group B12 are connected in parallel to form a first contact group, the contact group C13 and the contact group D14 are connected in parallel to form a second contact group, and the first contact group and the second contact group are connected in series.
In order to reduce the processing difficulty, the first coil driving assembly 21 and the second coil driving assembly 22 have the same structure. Taking the first coil driving assembly as an example, the first coil driving assembly 21 includes a bracket 211, a coil assembly 222 fixed on one side surface of the bracket 211, an armature 213 having one end disposed outside one end surface of the coil assembly and the other end bent in an L shape toward the other side surface of the bracket, and a connecting member 214 for connecting the other end of the armature to a movable contact a and a movable contact B to be driven, and a return spring disposed between the armature 213 and the bracket 211 to make the armature 213 have a suction force opposite to that of the coil assembly 212; wherein the armature 213 is rotatably connected to the bracket 211 and forms a rotation fulcrum at the connection.
Furthermore, the coil component comprises a coil framework, a coil bundle wound on the coil framework and a magnetizer positioned at the axis of the coil framework. The armature 213 is provided with a first spring hook 2131 at two side positions between the rotation fulcrum and the L-shaped bending portion, and the middle of the bracket 211 is provided with a second spring hook 2111 at two sides, and two ends of the return spring are fixed on the first spring hook 2131 and the second spring hook 2111 respectively. One end of the bracket far away from the armature extends vertically to the direction of the other end face of the coil assembly, and the coil assembly is fixed on the bracket 211 through the coil bracket.
The first coil driving module 21 and the second coil driving module 22 of the present invention have the same operation principle, and the first coil driving module 21 is taken as an example to explain: when the first contact group needs to be closed, firstly, the coil assembly 222 is electrified to generate a magnetic field, the magnetizer is magnetized to generate a magnetic force to act on the armature 213, and the middle part of the armature 213 is rotatably connected with the bracket 211, so that the magnetic force of the magnetizer on the coil drives the armature 213 to approach one end close to the armature 213, that is, the armature 213 is driven to rotate around a rotation fulcrum of the armature and the bracket 211, and thus, two groups of corresponding contacts of the contact group a and the contact group B of the corresponding first contact group are respectively attracted to realize closed conduction. When the contact group a and the contact group B of the first contact group need to be controlled to be disconnected and separated, the coil in the coil assembly is powered off, the magnetizer loses the magnetic force, and the armature 213 rotates counterclockwise under the action of the return spring, so that the two movable contacts and the two corresponding fixed contacts of the contact group a and the contact group B of the corresponding first contact group are separated and disconnected. Similarly, when the second contact group needs to be controlled to be attracted and separated, the action principle is the same as that of the first contact group, and the detailed description is omitted here.
Therefore, the four groups of contact groups are arranged, every two contact groups are connected in parallel and then connected in series, and the two contact groups connected in series are driven by the independent coil driving mechanism, so that the fracture of each contact group needs to bear the total loop voltage, which is reduced from original 1/2 to 1/4, the opening and closing time sequence of each group of hoe groups can be controlled more flexibly through independent control, and the hoe has higher flexibility and controllability.
In the above description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The foregoing description is only a preferred embodiment of the invention, which can be embodied in many different forms than described herein, and therefore the invention is not limited to the specific embodiments disclosed above. And that those skilled in the art may, using the methods and techniques disclosed above, make numerous possible variations and modifications to the disclosed embodiments, or modify equivalents thereof, without departing from the scope of the claimed embodiments. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the scope of the technical solution of the present invention.
Claims (9)
1. A relay with series and parallel contacts controlled by dual electromagnetic circuits, characterized in that: the circuit comprises a contact group A (11), a contact group B (12), a contact group C (13), a contact group D (14), a first coil driving component (21) and a second coil driving component (22), wherein the contact group A (11) and the contact group B (12) are connected in parallel to form a first contact group, the contact group C (13) and the contact group D (14) are connected in parallel to form a second contact group, and the first contact group and the second contact group are connected in series; the first coil driving assembly (21) is used for driving the contact group A (11) and the contact group B (12) in the first contact group to be switched on and switched off, and the second coil driving assembly (22) is used for driving the contact group C (13) and the contact group D (14) in the second contact group to be switched on and switched off.
2. The dual electromagnetic loop controlled relay of claim 1 having series and parallel contacts, wherein: the contact group A (11), the contact group B (12), the contact group C (13) and the contact group D (14) are respectively composed of two moving contacts which are electrically connected into a whole and a fixed contact which is correspondingly arranged below the two moving contacts.
3. The dual electromagnetic loop controlled relay having series and parallel contacts as claimed in claim 2, wherein: the contact group A (11) and the contact group B (12) are symmetrically arranged, and the contact group C (13) and the contact group D (14) are symmetrically arranged.
4. The dual electromagnetic loop controlled relay having series and parallel contacts as claimed in claim 2, wherein: two moving contacts of the contact group A (11) are respectively arranged at two ends of a moving contact piece A (41), two moving contacts of the contact group B (12) are respectively arranged at two ends of a moving contact piece B (42), one of the static contacts of the contact group A (11) and one of the static contacts of the contact group B (12) are respectively arranged on a first static terminal (31), and the other of the static contacts of the contact group A (11) and the other of the static contacts of the contact group B (12) are respectively arranged on one end of a second static terminal (32);
two moving contacts of the contact group C (13) are respectively arranged at two ends of a moving contact piece C (43), two moving contacts of the contact group D (14) are respectively arranged at two ends of a moving contact piece D (44), one of the static contacts of the contact group C (13) and one of the static contacts of the contact group D (44) are respectively arranged at the other end of the second static terminal (32), and the other of the static contacts of the contact group C (13) and the other of the static contacts of the contact group D (14) are respectively arranged at one end of the third static terminal (33).
5. The dual electromagnetic loop controlled relay having series and parallel contacts as claimed in claim 4, wherein: the first coil driving component (21) and the second coil driving component (22) are identical in structure.
6. The dual electromagnetic loop controlled relay having series and parallel contacts as recited in claim 5, wherein: the first coil driving assembly (21) comprises a bracket (211), a coil assembly (222) fixed on one side surface of the bracket (211), an armature (213) with one end arranged outside one end surface of the coil assembly and the other end bent to the other side surface of the bracket in an L shape, and a connecting piece (214) used for connecting the other end of the armature with a movable contact piece A and a movable contact piece B to be driven, wherein the first coil driving assembly (21) is arranged between the armature (213) and the bracket (211) to enable the armature (213) to be provided with a return spring opposite to the suction force of the coil assembly (212); wherein the armature (213) is rotatably connected with the bracket (211) and forms a rotary fulcrum at the connection.
7. The dual electromagnetic loop controlled relay having series and parallel contacts as recited in claim 6, wherein: the coil component comprises a coil framework, a coil bundle wound on the coil framework and a magnetizer positioned at the axis of the coil framework.
8. The dual electromagnetic loop controlled relay having series and parallel contacts as recited in claim 6, wherein: the armature iron (213) is provided with a first spring hook (2131) at two side positions between the rotating fulcrum and the L-shaped bending part thereof, the two sides of the middle part of the bracket (211) are provided with a corresponding second spring hook (2111), and two ends of the return spring are fixed on the first spring hook (2131) and the second spring hook (2111) respectively.
9. The dual electromagnetic loop controlled relay having series and parallel contacts as recited in claim 6, wherein: one end of the support, which is far away from the armature, extends vertically towards the other end face of the coil assembly, and the coil assembly is fixed on the support (211) through the coil support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210884091.4A CN115132524A (en) | 2022-07-26 | 2022-07-26 | Relay with series and parallel contacts controlled by double electromagnetic loops |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210884091.4A CN115132524A (en) | 2022-07-26 | 2022-07-26 | Relay with series and parallel contacts controlled by double electromagnetic loops |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115132524A true CN115132524A (en) | 2022-09-30 |
Family
ID=83385229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210884091.4A Pending CN115132524A (en) | 2022-07-26 | 2022-07-26 | Relay with series and parallel contacts controlled by double electromagnetic loops |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115132524A (en) |
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2022
- 2022-07-26 CN CN202210884091.4A patent/CN115132524A/en active Pending
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