CN215815733U - Magnetic latching relay - Google Patents
Magnetic latching relay Download PDFInfo
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- CN215815733U CN215815733U CN202122070431.3U CN202122070431U CN215815733U CN 215815733 U CN215815733 U CN 215815733U CN 202122070431 U CN202122070431 U CN 202122070431U CN 215815733 U CN215815733 U CN 215815733U
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Abstract
The utility model discloses a magnetic latching relay, which relates to the technical field of relay structures and comprises a support, a fixed iron core, an armature, a yoke, a permanent magnet, a coil and a contact assembly, wherein the contact assembly comprises a moving contact and a static contact, the moving contact is connected with a linkage rod, the linkage rod and the armature are fixed and slide through one end of the yoke, which is far away from the fixed iron core, the static contact is positioned between one end of the yoke, which is far away from the fixed iron core, and the moving contact, when the armature is at a second limit position, the armature is connected with the yoke, and the moving contact is contacted with the static contact to be closed. In the magnetic latching relay provided by the utility model, after the moving contact and the static contact are separated, a sufficient separation gap is formed between the moving contact and the static contact, which is favorable for realizing a large contact separation gap, and is especially applied to application occasions of high voltage.
Description
Technical Field
The utility model relates to the technical field of relay structures, in particular to a magnetic latching relay.
Background
The relay is an automatic switch element with an isolation function, is widely applied to remote control, remote measurement, communication, automatic control, electromechanical integration and power electronic equipment, and is one of the most important control elements.
The magnetic latching relay is normally kept in the contact open/close state by the magnetic force generated by the permanent magnet.
When the contact of the relay needs to be in an open or close state, the relay only needs to excite the coil by positive (negative) direct current pulse voltage, and the relay completes the state conversion of opening and closing instantly.
Normally, when the contact is in the hold state, the coil does not need to be energized, and the relay state can be maintained by only the magnetic force of the permanent magnet.
The magnetic latching relay structure in the prior art mainly comprises a frame body, a fixed iron core, an armature, a yoke, a permanent magnet, a coil and a contact assembly, wherein the contact assembly mainly comprises a movable contact and a fixed contact, for example, Chinese patent application with application number 202011191798.4, in the relay structure, because a static electrode is arranged on the top wall of the inner side of the shell, and a moving electrode driven by the armature moves up and down in a space between the lower surface of the static electrode and the upper surface of the fixed iron core, therefore, the movable range of the movable contact is limited, the relay structure is not beneficial to manufacturing relays with large requirements on contact separation gaps and is applied to relays in application occasions with higher voltage.
Therefore, a new magnetic latching relay needs to be proposed.
SUMMERY OF THE UTILITY MODEL
In order to overcome at least one of the above-mentioned drawbacks of the prior art, the present invention provides a magnetic latching relay to optimize the problem of small contact separation gap of the existing magnetic latching relay.
The technical scheme adopted by the utility model for solving the problems is as follows:
according to an aspect of the present invention, there is provided a magnetic latching relay comprising: a support; a fixed iron core fixed with the bracket; the armature is arranged corresponding to the fixed iron core, is arranged on the bracket in a sliding manner and is provided with a first limit position and a second limit position; a yoke including a first end and a second end, the first end of the yoke being connected to the fixed core, the second end of the yoke being connected to the armature when the armature is in the first extreme position to form a closed magnetic circuit; the permanent magnet is arranged on the circumferential outer side of the armature and used for providing magnetic holding force when the armature is at a first limit position or a second limit position; the coil is sleeved on the bracket and is positioned at the peripheries of the armature and the fixed iron core; and the contact assembly comprises a moving contact and a static contact, the moving contact is connected with a linkage rod, the linkage rod is fixed with the armature and slides to penetrate through one end of the yoke iron, which is far away from the fixed iron core, the static contact is positioned between one end of the yoke iron, which is far away from the fixed iron core, and the moving contact, when the armature is at a second limit position, the armature is connected with the yoke iron, and the moving contact is contacted with the static contact to be closed.
Furthermore, the permanent magnets are arranged on two sides of the armature in pairs, the permanent magnets are connected with the yoke to form a closed magnetic circuit, and the opposite ends of the paired permanent magnets are different in magnetism.
Further, a first non-ferromagnetic plate is provided on the side of the second end of the armature toward the yoke or on the side of the fixed core toward the armature.
Further, a second non-ferromagnetic plate is included, the second non-ferromagnetic plate being disposed on a side of the armature toward the fixed core or on a side of the fixed core toward the armature.
Furthermore, the moving contact is slidably arranged on the linkage rod, a first limit end and a second limit end are arranged on the linkage rod, the first limit end is positioned on one side, close to the armature, of the second limit end, the moving contact slides between the first limit end and the second limit end, a pressure spring is further sleeved on the linkage rod, one end of the pressure spring is abutted to the second limit end, the other end of the pressure spring is abutted to the moving contact, and elasticity is applied to enable the moving contact to be abutted to the first limit end.
Furthermore, a reset elastic piece is arranged between the fixed iron core and the armature, one end of the reset elastic piece is connected with the fixed iron core, and the other end of the reset elastic piece is connected with the armature.
Furthermore, a first mounting groove is formed in the fixed iron core, a second mounting groove is formed in the armature, the first mounting groove and the second mounting groove are arranged in opposite directions, and two ends of the reset elastic piece are respectively mounted in the first mounting groove and the second mounting groove.
Further, the first non-ferromagnetic sheet is a copper sheet.
Furthermore, a reinforcing column is arranged on the back surface of the side, which is abutted to the armature, of the second end of the armature.
Furthermore, a second end of the yoke is provided with a notch.
According to the technical scheme, the embodiment of the utility model at least has the following advantages and positive effects:
1) the static contact is arranged at one end, away from the fixed iron core, of the moving contact and the yoke iron, the moving contact is connected through a linkage rod and is close to or far away from the static contact under the driving of the armature iron, and the structural design provides sufficient moving space for the distance between the moving contact and the static contact after separation, so that the large contact separation gap is favorably realized, and the high-voltage high-power-supply device is applied to high-voltage application occasions;
2) the permanent magnet is connected with the yoke iron and forms a closed magnetic loop, so that sufficient magnetic holding force is provided for the armature iron to keep the armature iron at the first limit position or the second limit position;
3) a first non-ferromagnetic sheet is arranged on one side of the armature iron facing the second end of the yoke iron or a notch is formed in the second end of the yoke iron, so that the magnetic adsorption force of the permanent magnet on the armature iron through the second end of the yoke iron is reduced, the armature iron is easier to separate from the second end of the yoke iron during action, and the effect of improving the state switching speed is achieved;
4) the pressure spring is arranged, so that after the moving contact is contacted with the static contact, an additional binding force is provided for the moving contact, the moving contact and the static contact are stably bound, and the influence of electric repulsion on the closing of the moving contact and the static contact is effectively counteracted;
5) the reset elastic piece is arranged to provide additional power for resetting the armature, and further the armature is convenient to switch between the first limit position and the second limit position.
Drawings
Fig. 1 is a schematic view of the overall structure of a magnetic latching relay in the embodiment of the present invention;
FIG. 2 is a schematic diagram of the overall structure of the magnetic latching relay with the cover removed in the embodiment of the present invention;
FIG. 3 is a schematic top view of FIG. 2;
FIG. 4 is a cross-sectional view taken along the line A-A in FIG. 3;
fig. 5 is a schematic diagram of a first magnetic latching relay in a contact closed state according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a second magnetic latching relay in a contact closed state according to the embodiment of the present invention.
Wherein the reference numerals have the following meanings:
1. a support; 101. a slide chamber; 2. fixing the iron core; 201. a first mounting groove; 3. an armature; 301. a second mounting groove; 4. a yoke; 401. a first end; 402. a second end; 4021. a slide hole; 4022. a notch; 4023. a reinforcement column; 403. a first side portion; 404. a second side portion; 405. a mouth; 5. a permanent magnet; 6. a coil; 7. a contact assembly; 701. a moving contact; 7011. a movable contact; 702. static contact; 7021. a stationary contact; 8. a linkage rod; 801. a first limit end; 802. a second limit end; 9. a housing; 901. a cover body; 9011. a window; 902. a back plate; 1001. a first non-ferromagnetic plate; 1002. a second non-ferromagnetic plate; 11. a pressure spring; 12. the elastic member is reset.
Detailed Description
For better understanding and implementation, 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.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.
Examples
Referring to fig. 1 to 6, the utility model discloses a magnetic latching relay, which includes a bracket 1, a fixed iron core 2, an armature 3, a yoke 4, a permanent magnet 5, a coil 6 and a contact assembly 7, wherein the fixed iron core 2 is fixed on the bracket 1 and is arranged corresponding to the armature 3, and the armature 3 is slidably connected with the bracket 1 and can slide relative to the bracket 1 to approach or leave the fixed iron core 2.
The yoke 4 includes a first end 401 and a second end 402, wherein the first end 401 of the yoke 4 is connected with the stationary core 2, and the second end 402 is disposed away from the stationary core 2.
Referring to fig. 4, 5 and 6, the armature 3 has a first extreme position and a second extreme position.
Referring to fig. 4, when the armature 3 is in the first limit position, the end of the armature 3 facing the fixed core 2 is spaced apart from the fixed core 2, and the second end 402 of the yoke 4 is connected to the armature 3 to form a closed magnetic circuit.
Referring to fig. 5 and 6, when the armature 3 is attracted by the magnetic field generated by the fixed iron core 2 until the armature 3 is located at the second limit position, the end of the armature 3 facing the fixed iron core 2 is attached to the surface of the fixed iron core 2, so as to close the magnetic circuit between the fixed iron core 2 and the armature 3.
The permanent magnet 5 is disposed on the outer circumferential side of the armature 3 for providing a magnetic retaining force when the armature 3 is at the first limit position or the second limit position.
Referring to fig. 2 and 4, the contact assembly 7 includes a moving contact 701 and a stationary contact 702, the stationary contact 702 is fixed relative to the support 1, the moving contact 701 is connected to a linkage rod 8, the linkage rod 8 is fixed to the armature 3 and slides through the second end 402 of the yoke 4, the stationary contact 702 is located between one end of the yoke 4 away from the fixed iron core 2 and the moving contact 701, when the armature 3 is at the second limit position, the armature 3 is connected to the yoke 4, and the moving contact 701 is in contact with the stationary contact 702 to be closed.
Specifically, a moving contact 7011 is arranged on the moving contact 701, a stationary contact 7021 corresponding to the moving contact 701 is arranged on the stationary contact 702, and the moving contact 7011 is in contact with the stationary contact 7021 to achieve closing and electrical communication between the moving contact 701 and the stationary contact 702.
Therefore, through the arrangement, the static contact 702 is arranged at one end, away from the fixed iron core 2, of the moving contact 701 and the yoke 4, the moving contact 701 is connected through the linkage rod 8 and is close to or far away from the static contact 702 under the driving of the armature 3, and due to the structural design, sufficient movable space is provided for the distance between the moving contact 701 and the moving contact 701 after separation, the realization of a large contact separation gap is facilitated, and the high-voltage high-power-supply device is applied to application occasions.
Referring to fig. 4, as a possible implementation manner, a sliding cavity 101 is formed on the bracket 1, the fixed iron core 2 is fixed on the bracket 1 and located at one end of the sliding cavity 101, and the armature 3 is disposed corresponding to the fixed iron core 2 and slidably connected in the sliding cavity 101.
As shown in fig. 2 and 4, as a possible embodiment, a hollow sleeve (not labeled in the figures) may be disposed on the bracket 1, the sleeve is a cylinder with a cross section at least exceeding a semicircle, the armature 3 is a cylinder with a cross section shape with a central angle exceeding 180 ° so as to be in sliding fit with the sleeve, for example, the sleeve is a cylinder with a cross section being a complete circle, the armature 3 is a cylinder with a cross section being a complete circle so as to be in sliding fit with the sleeve, and the fixed iron core 2 is fixed at one end in the sleeve, so that the armature 3 can also slide relative to the bracket 1 and approach or depart from the fixed iron core 2.
Referring to fig. 1 and 2, in a possible embodiment, the magnetic latching relay further includes a housing 9, where the housing 9 includes a square housing 901 and a back plate 902, the housing 901 is provided with a mounting opening (not shown) on one surface thereof, the back plate 902 closes the mounting opening by a threaded connection or a snap-fit manner, and the bracket 1, the yoke 4, and the stationary contact 7021 are all fixed with the inside of the housing 9.
The terminal of the fixed contact 7021 and the terminal of the coil 6 both penetrate through the housing 9 and extend out of the housing 9 for external wire connection.
Referring to fig. 1, the cover 901 may further have a window 9011 for connecting an external electrical wire to the movable contact 701, and the window 9011 may be disposed at an end of the housing 9 away from the fixed core 2.
Referring to fig. 4 to 6, further, a sliding hole 4021 for the linking rod 8 to slide through is formed on the second end 402 of the yoke 4, and in order to keep the linking rod 8 smooth and reduce the wear of both sides, a sliding sleeve (not shown in the figure) may be sleeved outside the linking rod 8 or inside the sliding hole 4021, so as to reduce the wear between the linking rod 8 and the sliding hole 4021 and keep the smoothness of movement.
Further, the permanent magnets 5 are arranged on two sides of the armature 3 in pairs, the permanent magnets 5 are connected with the yoke 4 to form a closed magnetic circuit, and the opposite ends of the permanent magnets 5 in the pairs are different in magnetism.
As shown in fig. 4, the permanent magnet 5 is disposed outside the armature 3 and connected to the yoke 4, in this embodiment, two permanent magnets 5 are disposed, two permanent magnets 5 are symmetrically disposed on the left and right sides of the armature 3, when the armature 3 is in the first limit position, a closed magnetic loop P is formed between the left permanent magnet 5, the armature 3 and the yoke 4, the left permanent magnet 5, the right permanent magnet 5 and the yoke 4 form another closed magnetic loop Q, and the two magnetic loops provide magnetic force for keeping the contact at the first limit position.
As shown in fig. 5, when the armature 3 is in the first limit position, a first closed magnetic circuit X is formed among the left permanent magnet 5, the armature 3, and the yoke 4, a second closed magnetic circuit Y is formed among the left permanent magnet 5, the armature 3, the right permanent magnet 5, and the yoke 4, and a third closed magnetic circuit Z is formed among the right permanent magnet 5, the armature 3, and the yoke 4, and the three magnetic circuits provide magnetic force for holding the contact at the second limit position.
Referring to fig. 2, 4 and 5, further, the yoke 4 further includes a first side 403 connecting the first end 401 and the second end 402, and a second side 404 connected to the first end 401, the first side 403 and the second side 404 are parallel and spaced apart from each other, so that the yoke 4 is shaped like a letter G as a whole, the bracket 1, the fixed iron core 2, the armature 3, the permanent magnet 5 and the linkage 8 are all located in a space between the first side 403 and the second side 404, the permanent magnet 5 on the left side is connected to the first side 403, and the permanent magnet 5 on the right side is connected to the second side 404.
Further, the yoke 4 has a normally open mouth 405 on a side thereof adjacent to the second side 404, which facilitates installation and adjustment of the components of the first side 403 and the second side 404 of the yoke 4.
Further, a first non-ferromagnetic plate 1001 is disposed on a side of the armature 3 facing the second end 402 of the yoke 4, and the first non-ferromagnetic plate 1001 can abut against a surface of the second end 402 of the yoke 4 to maintain a gap between an end surface of the armature 3 facing away from the fixed iron core 2 and the surface of the second end 402 of the yoke 4, so as to weaken an attraction force of the permanent magnet between the armature 3 and the second end 402 of the yoke 4, facilitate quick separation of the armature 3 from the yoke 4 when the magnetic latching relay switches between the contact closing state, and reduce a current required to be supplied by the coil 6 to magnetize the fixed iron core 2 to drive the armature 3 to move.
Of course, the first non-ferromagnetic plate 1001 may be fixed to the surface of the yoke 4 on the side facing the armature 3, and may be made to abut against the surface of the armature 3, and also serve to maintain the air gap and weaken the magnetic attraction of the permanent magnet.
Further, the first non-ferromagnetic sheet 1001 is a copper sheet.
In other possible embodiments, the copper sheet can be replaced by other non-ferromagnetic materials.
Referring to fig. 6, in order to avoid the difficulty in separating the armature 3 from the fixed core 2 in the closed state, a second non-ferromagnetic plate 1002 may be disposed on a surface of the armature 3 facing the fixed core 2 or on a surface of the fixed core 2 facing the armature 3, which also facilitates the separation of the armature 3 from the fixed core 2 and the switching of the contact closed state of the magnetic latching relay.
The second non-ferromagnetic sheet 1002 may be identical to the material of the first non-ferromagnetic sheet 1001.
Furthermore, in order to avoid the second end 402 of the yoke 4 from being deformed by multiple contact collisions of the armature 3, a reinforcing post 4023 may be provided on the back surface of the armature 3 where the second end 402 abuts against the armature 3, thereby reinforcing the rigidity of the yoke 4 and reducing the influence of the deformation of the yoke 4 on the magnetic permeability.
Referring to fig. 2, further, a notch 4022 is formed on the second end 402 of the yoke 4.
The notch 4022 can reduce the surface area of the yoke 4 at the second end 402, reduce the closing effect on the magnetic flux generated by the permanent magnet 5, reduce the magnetic force effect of the permanent magnet 5, and facilitate the separation of the armature 3 from the second end 402 of the yoke 4 when the coil 6 magnetizes the fixed iron core 2 to drive the armature 3 to move toward the fixed iron core 2.
Referring to fig. 2 and 4, further, the movable contact 701 is slidably disposed on the linkage rod 8, the linkage rod 8 is provided with a first limit end 801 and a second limit end 802, the first limit end 801 is located on one side of the second limit end 802 close to the armature 3, the movable contact 701 slides between the first limit end 801 and the second limit end 802, the linkage rod 8 is further provided with a pressure spring 11, one end of the pressure spring 11 abuts against the second limit end 802, and the other end abuts against the movable contact 701, so as to apply an elastic force to make the movable contact 701 abut against the first limit end 801.
Referring to fig. 5, the movable contact 701 is slidably connected to the linkage rod 8, when the armature 3 is driven by the fixed iron core 2 to drive the movable contact 701 on the linkage rod 8 to approach the static contact 702, after the movable contact 701 abuts against the static contact 702, the movable contact 701 can slide relative to the linkage rod 8, so as to allow the linkage rod 8 to continue to move downward by an end distance, and the arrangement of the pressure spring 11 can apply a resisting pressure F1 pointing to the direction of the static contact 702 to the movable contact 701, so that the movable contact 701 and the static contact 702 are tightly closed, and after the fixed iron core 2 loses magnetism due to the power failure of the coil 6, the pressure spring 11 applies an elastic force F2 to the second limit end 802 of the linkage rod 8, which provides power for the linkage rod 8 to separate from the fixed iron core 2.
Further, the second position-limiting end 802 may be integrally formed with the linkage 8.
Furthermore, the first limiting end 801 is a shaft-use snap spring, a clamping groove (not labeled in the figure) is formed in the outer wall of the linkage rod 8, and the shaft-use snap spring is connected with the clamping groove to form the first limiting end 801 which can be pressed against the surface of the moving contact 701, so that a limiting effect is provided for the sliding of the moving contact 701.
Furthermore, a reset elastic part 12 is further arranged between the fixed iron core 2 and the armature 3, one end of the reset elastic part 12 is connected with the fixed iron core 2, and the other end is connected with the armature 3.
In one possible embodiment, the return elastic member 12 is a compression spring, and the return elastic member 12 applies elastic force to the armature 3 and the fixed iron core 2 respectively, so that the armature and the fixed iron core have a tendency to move away from each other.
In other possible embodiments, the return elastic element 12 can also be replaced by other materials with elasticity, such as rubber, silicone, etc.
The reset elastic element 12 provides automatic reset power for the armature 3 to be separated from the fixed iron core 2, so that the movable contact 7011 and the fixed contact 7021 can be conveniently separated.
Further, a first mounting groove 201 is formed in the fixed iron core 2, a second mounting groove 301 is formed in the armature 3, the first mounting groove 201 and the second mounting groove 301 are arranged in opposite directions, and two ends of the elastic resetting piece 12 are respectively mounted in the first mounting groove 201 and the second mounting groove 301.
The arrangement of the first mounting groove 201 and the second mounting groove 301 facilitates the installation of the elastic resetting element 12, and also guides the elastic deformation direction of the elastic resetting element 12, and after the armature 3 and the fixed iron core 2 are close to each other to be closed, the space occupation of the elastic resetting element 12 is reduced, so that the fixed iron core 2 can provide better adsorption magnetic force for the armature 3, and a condition for keeping the contact stably closed is provided.
In one possible embodiment, a connection opening (not shown) is provided on the side of the armature 3 facing the second end 402 of the yoke 4 for connection of the coupling rod 8.
More specifically, the connecting hole is an internal threaded hole, and an external thread is arranged at one end of the linkage rod 8 connected with the armature 3 to fixedly connect the linkage rod 8 with the connecting hole through a thread.
Such an arrangement facilitates assembly and disassembly of the linkage 8 with the armature 3.
The application process and principle of the embodiment of the utility model are as follows:
referring to fig. 4, in the power-off state of the coil 6, the reset elastic element 12 applies an elastic force to the armature 3 in a direction opposite to the fixed iron core 2, so that the armature 3 is far away from the fixed iron core 2, and the end of the armature 3 on the side away from the fixed iron core 2 abuts against the surface of the second end 402 of the yoke 4, in this embodiment, the end of the fixed iron core 2 abuts indirectly against the second end 402 of the yoke 4 through the first non-ferromagnetic sheet 1001, at this time, the moving contact 701 is separated from the stationary contact 702, the moving contact 7011 and the stationary contact 7021 are in an open state, and a closed magnetic loop is generated among the permanent magnet 5, the armature 3 and the yoke 4, and the permanent magnet 5 provides stable magnetic force retention to prevent an erroneous closing action of the relay when the relay is not energized;
referring to fig. 5, after the coil 6 is energized, the coil 6 magnetizes the fixed iron core 2, so that the magnetic attraction force generated by the fixed iron core 2 to the armature 3 overcomes the elastic force of the reset elastic element 12, the armature 3 is attracted towards the direction close to the coil until the surface of the armature 3 abuts against the surface of the fixed iron core 2, in the process, after the movable contact 7011 on the movable contact 701 abuts against the fixed contact 7021 on the fixed contact 702, the linkage rod 8 continues to move downwards, relative sliding can be generated between the linkage rod 8 and the movable contact 701, the pressure spring 11 generates elastic force F1, so that the movable contact 7011 and the fixed contact 7021 are stably closed, and the movable contact 7011 and the fixed contact 7021 are prevented from being flicked open by the electric repulsion generated during electric conduction, and the closing is stable;
referring to fig. 5, after the power of the coil 6 is cut off, the fixed iron core 2 loses magnetism, the reset elastic element 12 provides an elastic force (not shown in the figure) to the armature 3 in a direction away from the fixed iron core 2, which is overlapped with an elastic force F2 generated by the compression spring 11 to the linkage rod 8, and tends to move the armature 3 in a direction away from the fixed iron core 2 until the first ferromagnetic sheet 1001 abuts against the surface of the second end 402 of the yoke 4, and the moving contact 701 is separated from the fixed contact 702, and the moving contact 7011 is disconnected from the fixed contact 7021.
In summary, in the magnetic latching relay provided by the present invention, after the moving contact 701 is separated from the static contact 702, a sufficient separation gap is provided between the moving contact and the static contact, which is beneficial to realizing a large contact separation gap, and is especially applied to high voltage application occasions.
The technical means disclosed in the utility model scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and such improvements and modifications are also considered to be within the scope of the present invention.
Claims (10)
1. A magnetic latching relay, comprising:
a support (1);
a fixed iron core (2) fixed to the bracket (1);
the armature (3) is arranged corresponding to the fixed iron core (2), is arranged on the bracket (1) in a sliding manner, and has a first limit position and a second limit position;
a yoke (4) comprising a first end (401) and a second end (402), the first end (401) of the yoke (4) being connected to the stationary core (2), the second end (402) of the yoke (4) being connected to the armature (3) when the armature (3) is in a first extreme position, so as to form a closed magnetic circuit;
a permanent magnet (5) arranged on the circumferential outer side of the armature (3) and used for providing magnetic holding force when the armature (3) is at a first limit position or a second limit position;
the coil (6) is sleeved on the bracket (1) and is positioned at the peripheries of the armature (3) and the fixed iron core (2); and
the contact assembly (7) comprises a moving contact (701) and a fixed contact (702), the moving contact (701) is connected with a linkage rod (8), the linkage rod (8) and the armature (3) are fixed and slide to penetrate through one end, deviating from the fixed iron core (2), of the yoke (4), the fixed contact (702) is located between one end, deviating from the fixed iron core (2), of the yoke (4) and the moving contact (701), when the armature (3) is at a second limit position, the armature (3) is connected with the yoke (4), and the moving contact (701) is in contact with the fixed contact (702) to be closed.
2. The magnetic latching relay according to claim 1, wherein the permanent magnets (5) are provided in pairs on both sides of the armature (3), the permanent magnets (5) are connected to the yoke (4) to form a closed magnetic circuit, and the facing ends of the permanent magnets (5) in the pairs are magnetically different.
3. A magnetic latching relay according to claim 2, characterized by further comprising a first non-ferromagnetic plate (1001), said first non-ferromagnetic plate (1001) being provided on a side of the armature (3) toward the second end (402) of the yoke (4) or on a side of the stationary core (2) toward the armature (3).
4. A magnetic latching relay according to claim 2, characterized by further comprising a second non-ferromagnetic plate (1002), the second non-ferromagnetic plate (1002) being disposed on a side of the armature (3) toward the fixed core (2) or on a side of the fixed core (2) toward the armature (3).
5. The magnetic latching relay according to claim 1, wherein the movable contact (701) is slidably disposed on a linkage (8), the linkage (8) is provided with a first limit end (801) and a second limit end (802), the first limit end (801) is located on one side of the second limit end (802) close to the armature (3), the movable contact (701) slides between the first limit end (801) and the second limit end (802), the linkage (8) is further sleeved with a pressure spring (11), one end of the pressure spring (11) abuts against the second limit end (802), and the other end of the pressure spring abuts against the movable contact (701) to apply an elastic force to make the movable contact (701) abut against the first limit end (801).
6. The magnetic latching relay according to claim 1, wherein a reset elastic member (12) is further disposed between the fixed iron core (2) and the armature (3), one end of the reset elastic member (12) is connected to the fixed iron core (2), and the other end is connected to the armature (3).
7. The magnetic latching relay according to claim 6, wherein the fixed iron core (2) is provided with a first mounting groove (201), the armature (3) is provided with a second mounting groove (301), the first mounting groove (201) and the second mounting groove (301) are oppositely arranged, and two ends of the reset elastic member (12) are respectively mounted in the first mounting groove (201) and the second mounting groove (301).
8. A magnetic latching relay according to claim 3, characterized in that the first non-ferromagnetic sheet (1001) is a copper sheet.
9. The magnetic latching relay according to claim 1, characterized in that a reinforcing post (4023) is provided on the back surface of the side where the second end (402) of the armature (3) abuts against the armature (3).
10. A magnetic latching relay according to claim 1, characterized in that the second end (402) of the yoke (4) is notched (4022).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122070431.3U CN215815733U (en) | 2021-08-30 | 2021-08-30 | Magnetic latching relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122070431.3U CN215815733U (en) | 2021-08-30 | 2021-08-30 | Magnetic latching relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215815733U true CN215815733U (en) | 2022-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202122070431.3U Active CN215815733U (en) | 2021-08-30 | 2021-08-30 | Magnetic latching relay |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116844919A (en) * | 2023-09-01 | 2023-10-03 | 新乡市景弘电气有限公司 | Electromagnetic relay capable of being rapidly broken |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116844919A (en) * | 2023-09-01 | 2023-10-03 | 新乡市景弘电气有限公司 | Electromagnetic relay capable of being rapidly broken |
| CN116844919B (en) * | 2023-09-01 | 2024-01-16 | 新乡市景弘电气有限公司 | Electromagnetic relay capable of being rapidly broken |
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