CN114141581A - Strong-magnetism-preventing latching relay - Google Patents
Strong-magnetism-preventing latching relay Download PDFInfo
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- CN114141581A CN114141581A CN202111501634.1A CN202111501634A CN114141581A CN 114141581 A CN114141581 A CN 114141581A CN 202111501634 A CN202111501634 A CN 202111501634A CN 114141581 A CN114141581 A CN 114141581A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/10—Electromagnetic or electrostatic shielding
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
- H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
- H01H50/047—Details concerning mounting a relays
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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
- H01H50/54—Contact arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H51/00—Electromagnetic relays
- H01H51/01—Relays in which the armature is maintained in one position by a permanent magnet and freed by energisation of a coil producing an opposing magnetic field
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- Electromagnets (AREA)
Abstract
The invention discloses a strong magnetism prevention latching relay, which comprises a shell, a main coil, a main contact assembly and a locking piece, wherein the main coil, the main contact assembly and the locking piece are arranged in the shell; the main contact component comprises a main contact static arm and a main contact movable arm, the main contact movable arm is connected with a magnet with a preset polarity, and the main contact movable arm and the main contact static arm are attracted or separated when a magnetic force effect is generated between the magnet and the main wire packet; the locking piece is used for locking the main contact movable arm, and the locking piece has a self-unlocking function. No matter in a closing state or a pulling state, when an external interference magnetic field appears, the magnet has the tendency of driving the main contact movable arm to act so as to destroy the original state of the main contact movable arm. However, the main contact boom cannot be operated because of the locking action of the lock member. The magnetic latching relay has the function of preventing strong magnetic interference, and meanwhile, the thickness size of the shell is not changed due to the fact that the locking piece is integrated in the shell, so that the magnetic latching relay is favorably installed.
Description
Technical Field
The invention relates to the field of magnetic latching relays, in particular to a strong magnetism prevention magnetic latching relay.
Background
In the prior art, the relay is prevented from being interfered by an external magnetic field by arranging an anti-magnetic shell outside the relay. Along with the improvement of antimagnetic requirement, the thickness of antimagnetic shell is thicker and thicker, so not only improved product cost, brought inconvenience to the installation of relay in addition.
Therefore, how to design a strong magnetism prevention latching relay, the relay not only can prevent the interference of external magnetic field, but also is convenient to install and fix, is the key problem that the skilled person needs to solve urgently.
Disclosure of Invention
The invention aims to provide a strong magnetism prevention holding relay which can prevent the interference of an external magnetic field and is convenient to install and fix. In order to achieve the purpose, the invention provides the following technical scheme:
a strong magnetism prevention latching relay comprises a shell, a main coil, a main contact assembly and a locking piece, wherein the main coil, the main contact assembly and the locking piece are arranged in the shell;
the main contact component comprises a main contact static arm and a main contact movable arm, the main contact movable arm is connected with a magnet with a preset polarity, and the main contact movable arm and the main contact static arm are attracted or separated when a magnetic force action is generated between the magnet and the main wire packet;
the locking piece is used for locking the main contact movable arm, and the locking piece has a self-unlocking function.
Preferably, the magnetic latching device further comprises a secondary coil and an armature, wherein the latching piece is connected with the armature, and the armature is arranged close to the end of the iron core of the secondary coil;
when the auxiliary wire package is magnetic, under the attraction action of the armature and the auxiliary wire package, the locking piece moves along with the armature to unlock the main contact movable arm, and after the auxiliary wire package loses magnetism, the locking piece resets to lock the main contact movable arm; the magnetic path direction of the main coil is perpendicular to the magnetic path direction of the auxiliary coil.
Preferably, the electromagnetic contactor further comprises a secondary contact assembly, the secondary contact assembly comprises a secondary contact static arm and a secondary contact movable arm, and the lock piece and the armature are arranged on the secondary contact movable arm;
when the auxiliary wire package is magnetic, under the attraction effect of the armature and the auxiliary wire package, the action of the movable arm of the auxiliary contact is contacted with the fixed arm of the auxiliary contact, and after the auxiliary wire package loses magnetism, the movable arm of the auxiliary contact is reset and separated from the fixed arm of the auxiliary contact;
the movable arm of the auxiliary contact is connected with the first line end of the main solenoid, the fixed arm of the auxiliary contact is connected with the first line end of the auxiliary solenoid, the second line end of the main solenoid is connected to the second line end of the auxiliary solenoid, and the first line end and the second line end of the auxiliary solenoid extend out of the shell.
Preferably, the auxiliary contact actuator arm is located between the main contact actuator arm and the auxiliary line package, and the end of the auxiliary contact actuator arm is hinged to the housing; when vice solenoid has magnetism, armature with under the actuation effect of vice solenoid, vice contact movable arm rotate with vice contact quiet arm contacts vice solenoid loses behind the magnetism, vice contact movable arm restore to the throne with vice contact quiet arm separation.
Preferably, a sliding rail is arranged in the housing, and the locking piece is matched with the sliding rail;
after the main contact movable arm is separated from the main contact static arm, the locking piece blocks the main contact movable arm so as to prevent the main contact movable arm from contacting with the main contact static arm;
after the main contact movable arm is contacted with the main contact static arm, the locking piece blocks the main contact movable arm so as to prevent the main contact movable arm from being separated from the main contact static arm.
Preferably, the auxiliary contact assembly further comprises a return spring, one end of the return spring is connected with the auxiliary contact movable arm, the other end of the return spring is connected with the housing, the return spring provides elastic return force for the auxiliary contact movable arm, so that the auxiliary contact movable arm is separated from the auxiliary contact static arm, and the locking member forms locking force on the main contact movable arm under the thrust action of the return spring.
Preferably, the casing is internally provided with an arc-shaped limiting hole, the main contact movable arm is connected with a limiting pin, the limiting pin penetrates through the arc-shaped limiting hole, and the inner walls at the two ends of the arc-shaped limiting hole can block the limiting pin.
Preferably, the ends of the two ends of the core of the main coil are arranged face to face, and the magnet is located between the two ends of the core of the main coil.
It can be seen from the above technical solution that: when an external interference magnetic field occurs no matter in a closing state or a pulling state, the magnetic path direction of the external interference magnetic field is the same as that of the main line packet, and the polarity of the external interference magnetic field is opposite to that of the main line packet, the magnet has the tendency of driving the main contact movable arm to act under the action of the external interference magnetic field so as to destroy the original state of the main contact movable arm. However, the main contact boom cannot be operated because of the locking action of the lock member. Therefore, if the main contact movable arm and the main contact fixed arm are in a contact state, the contact is continuously kept; and if the movable arm and the fixed arm of the main contact are in a separated state, the separation is continuously kept. The magnetic latching relay has the function of preventing strong magnetic interference, and meanwhile, the thickness size of the shell is not changed due to the fact that the locking piece is integrated in the shell, so that the magnetic latching relay is favorably installed.
Drawings
In order to more clearly illustrate the solution of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a strong magnetism prevention latching relay according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating switching from off to on according to an embodiment of the present invention.
Wherein, 1 is armature, 2 is auxiliary contact movable arm, 3 is auxiliary contact static arm, 4 is locking piece, 5 is main contact static arm, 6 is main contact movable arm, 7 is magnet, 8 is auxiliary solenoid, 9 is main solenoid, 10 is the casing.
Detailed Description
The invention discloses a strong magnetic prevention latching relay which can prevent interference of an external magnetic field and is convenient to install and fix.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The invention discloses a strong-magnetism-preventing holding relay, which comprises a shell 10, and further comprises a main line bag 9, a main contact assembly and a locking piece 4, wherein the main line bag 9, the main contact assembly and the locking piece are arranged in the shell 10. The main contact assembly comprises a main contact static arm 5 and a main contact movable arm 6. The main contact movable arm 6 is connected with a magnet 7 with a preset polarity. After the main line package 9 generates a magnetic field, a magnetic force action is generated between the magnet 7 and the main line package 9, and under the magnetic force action, the main contact movable arm 6 and the main contact fixed arm 5 attract or separate. The locking member 4 of the present invention is integrated in the housing 10, the locking member 4 functions to lock the main contact arm 6, and the locking member 4 has a self-unlocking function.
When the switch is switched on, the locking piece 4 is firstly controlled to unlock the main contact movable arm 6, then a forward driving voltage is provided for the main wire packet 9, so that the main wire packet 9 generates a preset magnetic field, a forward magnetic force is generated on the magnet 7, and the driving magnet 7 drives the main contact movable arm 6 to be close to the main contact static arm 5, so that a main contact on the main contact movable arm 6 is contacted with a main contact on the main contact static arm 5, and a circuit is switched on. After closing, the lock member 4 operates to lock the main contact boom 6.
When the switch is pulled, the locking piece 4 is controlled to unlock the main contact movable arm 6, then reverse driving voltage is provided for the main wire packet 9, so that the main wire packet 9 generates a preset magnetic field, a reverse magnetic force is generated on the magnet 7, and the driving magnet 7 drives the main contact movable arm 6 to be away from the main contact static arm 5, so that a main contact on the main contact movable arm 6 is separated from a main contact on the main contact static arm 5, and a circuit is disconnected. After the brake is pulled, the lock member 4 acts to lock the main contact movable arm 6.
When an external interference magnetic field occurs no matter in a closing state or a pulling state, the magnetic path direction of the external interference magnetic field is the same as that of the main line packet 9, and the polarity of the external interference magnetic field is opposite to that of the main line packet 9, the magnet 7 has a tendency of driving the main contact movable arm 6 to act under the action of the external interference magnetic field so as to destroy the original state of the main contact movable arm 6. However, the main contact boom 6 is not operated because of the lock action of the lock member 4. Therefore, if the main contact movable arm 6 and the main contact stationary arm 5 are in a contact state, the contact is continuously maintained; if the main contact movable arm 6 and the main contact fixed arm 5 are in a separated state, the separation is continuously maintained.
The magnetic latching relay not only has the function of preventing strong magnetic interference, but also is beneficial to the installation of the magnetic latching relay because the locking piece 4 is integrated in the shell 10 and the thickness size of the shell 10 is not changed.
It should be noted that, in order to make the main contact movable arm 6 more sensitive, the present invention sets the iron core of the main wire packet 9 to be in a C-shaped structure, that is, two end portions of the iron core of the main wire packet 9 are arranged face to face. The magnet 7 connected to the main contact arm 6 is located between the two ends of the core of the main coil 9. When the drive voltage is supplied to the main wire packet 9 in this manner, the magnet 7 receives forces in the same direction from both end portions of the core, and the operation of the magnet 7 is effectively ensured.
The magnetic latching relay of the present invention further includes a secondary coil 8 and an armature 1. The blocking element 4 is connected to the armature 1. The armature 1 is arranged close to the end of the core of the secondary winding 8. When the iron core of the secondary coil 8 has magnetism, the armature 1 is attracted by the iron core of the secondary coil 8, and the locking piece 4 acts along with the armature 1 to unlock the main contact movable arm 6. After the iron core of the sub-package 8 loses magnetism, the locking member 4 is reset to lock the main contact movable arm 6. Namely, the locking and unlocking of the locking member 4 can be controlled by controlling the power-on and power-off of the secondary coil 8.
It should be noted that, if the magnetic path direction of the secondary coil 8 is the same as the magnetic path direction of the main coil 9, when an external interference magnetic field having the same magnetic path direction as the main coil 9 and opposite polarity occurs, the interference magnetic field may generate magnetism in the secondary coil 8, which may cause the unlocking of the locking member 4, and then, under the action of the external interference magnetic field, the main contact actuator arm 6 may operate to destroy the original state. It can be seen that if the magnetic path direction of the secondary coil 8 is the same as that of the primary coil 9, the locking member 4 will fail under the action of the external disturbance magnetic field, and the magnetic latching relay will be disturbed.
In order to prevent this, the present invention defines the magnetic path direction of the main coil 9 and the magnetic path direction of the sub-coil 8 to be perpendicular to each other. In this way, if the magnetic path direction of the external disturbance magnetic field is the same as the magnetic path direction of the main coil 9, the external disturbance magnetic field is perpendicular to the magnetic path direction of the sub coil 8, and therefore the sub coil 8 cannot be disturbed, and the lock member 4 does not fail, so that the magnetic relay can be prevented from being disturbed. If the magnetic path direction of the external disturbance magnetic field is the same as the magnetic path direction of the secondary coil 8, the lock member 4 fails, but the external disturbance magnetic field is perpendicular to the magnetic path direction of the primary coil 9, and therefore, the disturbance cannot be generated in the primary coil 9, and the primary contact actuator arm 6 remains in the original state. Therefore, if the magnetic path direction of the main coil 9 and the magnetic path direction of the sub-coil 8 are defined to be perpendicular to each other, the main coil 9 and the sub-coil 8 are not interfered with at the same time regardless of the magnetic path direction of the external disturbance magnetic field, and the main contact actuator 6 can be maintained in the original state.
The magnetic path direction of the main coil 9 is perpendicular to the magnetic path direction of the sub-coil 8, that is, the central axis around which the coil of the main coil 9 is wound is perpendicular to the central axis around which the coil of the sub-coil 8 is wound.
The invention also provides a secondary contact assembly comprising a secondary contact stationary arm 3 and a secondary contact movable arm 2. The locking piece 4 and the armature 1 are both arranged on the secondary contact movable arm 2. When the auxiliary wire package 8 is magnetic, under the attraction action of the armature 1 and the auxiliary wire package 8, the auxiliary contact movable arm 2 acts to be in contact with the auxiliary contact fixed arm 3, and meanwhile, the locking piece 4 acts along with the auxiliary contact movable arm 2 to unlock the main contact movable arm 6. After the auxiliary wire package 8 loses magnetism, the auxiliary contact movable arm 2 resets and is separated from the auxiliary contact static arm 3, and meanwhile, the locking piece 4 is driven to reset so as to lock the main contact movable arm 6.
The auxiliary contact movable arm 2 is connected with a first line end of the main line packet 9, and the auxiliary contact fixed arm 3 is connected with a first line end of the auxiliary line packet 8. The second wire of the primary wire package 9 terminates at the second wire end of the secondary wire package 8. And, the first terminal and the second terminal of the sub-cord pack 8 both protrude out of the housing 10 to facilitate the switching on of the driving voltage.
After a driving voltage is applied to the secondary wire packet 8, the secondary wire packet 8 can electrically attract the armature 1, so that the locking piece 4 is driven to act to unlock the main contact movable arm 6. Meanwhile, as the auxiliary contact movable arm 2 and the auxiliary contact fixed arm 3 are connected, the first line end of the main line packet 9 is connected with the first line end of the auxiliary line packet 8, and the main line packet 9 is electrified, so that the main contact movable arm 6 acts to switch on or switch off. After switching on or switching off, the driving voltage is cut off, and the auxiliary contact static arm 3 drives the locking piece 4 to reset under the action of the reset force so as to lock the main contact movable arm 6.
The sub-package 8 of the present invention has not only a function of controlling the lock 4 but also a function of controlling the main package 9. Compared with the technical scheme that two line ends of the secondary coil 8 and two line ends of the main coil 9 are led out of the shell 10 and the secondary coil 8 and the main coil 9 are controlled according to time sequence to achieve unlocking and locking, the technical scheme that the locking piece 4 and the main coil 9 are controlled through the secondary coil 8 is simple in control principle and easy to achieve.
With regard to the specific structure of the sub-contact actuator 2: the secondary contact boom 2 is located between the primary contact boom 6 and the secondary line package 8. The end of one end of the secondary contact movable arm 2 is hinged on the shell 10. After the auxiliary wire package 8 is electrified to generate magnetism, the armature 1 is attracted by the iron core of the auxiliary wire package 8, the auxiliary contact movable arm 2 rotates around the hinged part, so that an auxiliary contact on the auxiliary contact movable arm 2 is contacted with an auxiliary contact on the auxiliary contact static arm 3, and meanwhile, the locking piece 4 is driven to be far away from the main contact movable arm 6. After the auxiliary wire package 8 loses power, the attraction force between the armature 1 and the auxiliary wire package 8 disappears, and then the auxiliary contact movable arm 2 rotates towards the direction close to the main contact movable arm 6 under the action of the reset force to be separated from the static contact movable arm, and meanwhile, the locking piece 4 moves to the position of the main contact movable arm 6, and blocking type locking is formed on the main contact movable arm 6.
In order to ensure the stability of the movement of the blocking element 4, the invention also provides a sliding rail in the housing 10, which rail cooperates with the blocking element 4. After switching off, i.e. after the main contact movable arm 6 is separated from the main contact stationary arm 5, the locking member 4 forms a stop for the main contact movable arm 6 to prevent the main contact movable arm 6 from contacting the main contact stationary arm 5. After the main contact movable arm 6 contacts with the main contact static arm 5, the locking member 4 blocks the main contact movable arm 6 to prevent the main contact movable arm 6 from separating from the main contact static arm 5.
It should be noted that the locking member 4 may be provided as a pin-like structure, i.e., a locking pin.
The secondary contact assembly of the present invention also includes a return spring. One end of the return spring is connected with the auxiliary contact movable arm 2, and the other end is connected with the shell 10. The return spring provides an elastic return force to the sub-contact movable arm 2 to separate the sub-contact movable arm 2 from the sub-contact stationary arm 3.
Note that the blocking force of the lock member 4 against the main contact movable arm 6 is derived from the thrust of the return spring, and therefore the return spring provides not only the return force but also the locking force.
In order to prevent the movable arm 2 of the auxiliary contact from over-rotating, the invention also arranges an arc-shaped limiting hole in the shell 10, and arranges a limiting pin on the static arm 6 of the auxiliary contact, wherein the limiting pin penetrates through the arc-shaped limiting hole. The inner walls at the two ends of the arc-shaped limiting hole form a blocking effect on the limiting pin. The rotation range of the sub-contact stationary arm 6 is thus defined between both ends of the arc-shaped limit hole.
The use of the magnetic latching relay will be described with reference to fig. 2: in the state a, the magnetic latching relay is in a switching-off state, and the main contact movable arm 6 is separated from the main contact static arm 5. The lock member 4 at this time is stopped below the main contact arm 6, and blocks the main contact arm 6, thereby preventing the main contact arm 6 from contacting the main contact stationary arm 5 under the interference of an external disturbance magnetic field, and maintaining the pull-out state. If closing is needed, firstly, a left negative right positive driving voltage is provided for the secondary wire package 8, as shown in a state b, after the secondary wire package 8 is electrified, the armature 1 is attracted, the secondary contact movable arm 2 drives the locking piece 4 to rotate, so that the locking piece 4 is far away from the main contact movable arm 6, and the main contact movable arm 6 is unlocked. After the auxiliary contact movable arm 2 contacts with the auxiliary contact static arm 3, the first line end of the main line packet 9 is connected with the positive pole of the driving voltage, so that the main line packet 9 is electrified, the upper end part of the iron core of the main line packet 9 is an N pole, the lower end part of the iron core is an S pole, and the magnet 7 which is the N pole moves downwards, so that the main contact movable arm 6 is driven to contact with the main contact static arm 5, and closing is achieved, as shown in a state c. After closing, the driving voltage is cut off, the secondary coil 8 loses power, then the secondary contact movable arm 2 drives the locking piece 4 to reset under the action of the reset spring, and the locking piece 4 is blocked above the primary contact movable arm 6 to prevent separation under the action of an interference magnetic field, as shown in a state d.
It should be noted that, the above describes the flow from switching off to switching on, and the process from switching on to switching off is a dcba process, except that the driving voltage with positive left and negative right needs to be provided to the secondary line package 8 at the beginning, and details are not described here again.
Finally, it should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The strong magnetism prevention latching relay comprises a shell, and is characterized by further comprising a main coil, a main contact assembly and a locking piece, wherein the main coil, the main contact assembly and the locking piece are arranged in the shell;
the main contact component comprises a main contact static arm and a main contact movable arm, the main contact movable arm is connected with a magnet with a preset polarity, and the main contact movable arm and the main contact static arm are attracted or separated when a magnetic force action is generated between the magnet and the main wire packet;
the locking piece is used for locking the main contact movable arm, and the locking piece has a self-unlocking function.
2. The anti-ferromagnetic latching relay according to claim 1, further comprising a secondary coil and an armature, wherein said latch is interconnected to said armature, and said armature is disposed proximate to an end of an iron core of said secondary coil;
when the auxiliary wire package is magnetic, under the attraction action of the armature and the auxiliary wire package, the locking piece moves along with the armature to unlock the main contact movable arm, and after the auxiliary wire package loses magnetism, the locking piece resets to lock the main contact movable arm; the magnetic path direction of the main coil is perpendicular to the magnetic path direction of the auxiliary coil.
3. The anti-ferromagnetic latching relay according to claim 2, further comprising a secondary contact assembly, said secondary contact assembly comprising a secondary contact stationary arm and a secondary contact movable arm, said latch member and said armature being disposed on said secondary contact movable arm;
when the auxiliary wire package is magnetic, under the attraction effect of the armature and the auxiliary wire package, the action of the movable arm of the auxiliary contact is contacted with the fixed arm of the auxiliary contact, and after the auxiliary wire package loses magnetism, the movable arm of the auxiliary contact is reset and separated from the fixed arm of the auxiliary contact;
the movable arm of the auxiliary contact is connected with the first line end of the main solenoid, the fixed arm of the auxiliary contact is connected with the first line end of the auxiliary solenoid, the second line end of the main solenoid is connected to the second line end of the auxiliary solenoid, and the first line end and the second line end of the auxiliary solenoid extend out of the shell.
4. The anti-ferromagnetic latching relay according to claim 3, wherein said secondary contact actuator arm is located between said primary contact actuator arm and said secondary coil, an end of said secondary contact actuator arm being hinged to said housing;
when the auxiliary wire package is magnetic, under the attraction effect of the armature and the auxiliary wire package, the auxiliary contact movable arm rotates to be in contact with the auxiliary contact static arm;
and after the auxiliary solenoid loses magnetism, the auxiliary contact movable arm resets and is separated from the auxiliary contact static arm.
5. The anti-ferromagnetic latching relay according to claim 4, wherein a slide rail is provided in said housing, said lock fitting on said slide rail;
after the main contact movable arm is separated from the main contact static arm, the locking piece blocks the main contact movable arm so as to prevent the main contact movable arm from contacting with the main contact static arm;
after the main contact movable arm is contacted with the main contact static arm, the locking piece blocks the main contact movable arm so as to prevent the main contact movable arm from being separated from the main contact static arm.
6. The anti-ferromagnetic latching relay according to claim 4, wherein said auxiliary contact assembly further comprises a return spring, one end of said return spring is connected to said auxiliary contact movable arm, and the other end of said return spring is connected to said housing, said return spring provides an elastic return force to said auxiliary contact movable arm, so that said auxiliary contact movable arm is separated from said auxiliary contact stationary arm, and said locking member forms a locking force to said main contact movable arm under a thrust of said return spring.
7. The anti-strong-magnetism latching relay according to claim 4, wherein an arc-shaped limiting hole is formed in the housing, a limiting pin is connected to the auxiliary contact movable arm, the limiting pin penetrates through the arc-shaped limiting hole, and inner walls at two ends of the arc-shaped limiting hole can block the limiting pin.
8. The strong magnetism prevention latching relay according to claim 1, wherein end portions of both ends of the core of the main coil are arranged face to face, and the magnet is located between the end portions of the core of the main coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111501634.1A CN114141581A (en) | 2021-12-09 | 2021-12-09 | Strong-magnetism-preventing latching relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111501634.1A CN114141581A (en) | 2021-12-09 | 2021-12-09 | Strong-magnetism-preventing latching relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114141581A true CN114141581A (en) | 2022-03-04 |
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ID=80385688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111501634.1A Pending CN114141581A (en) | 2021-12-09 | 2021-12-09 | Strong-magnetism-preventing latching relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114141581A (en) |
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2021
- 2021-12-09 CN CN202111501634.1A patent/CN114141581A/en active Pending
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