Magnetic latching relay with optimized structure

Abstract

The utility model belongs to the technical field of magnetic latching relays, and particularly relates to a magnetic latching relay with an optimized structure, which comprises a shell, the shell is formed by fixedly assembling a base and a cover plate through buckle mechanisms, a movable plate assembly, a static plate assembly, an armature assembly and a coil assembly are arranged in the base, the buckle mechanisms are distributed in a staggered manner, and the movable plate assembly and the static plate assembly are arranged in the shell. Through cooperation of structures such as a clamping groove, a clamping block, a clamping lug and a locking ball, tight connection is achieved through guiding of a groove in the assembling process, the anti-loosening performance is enhanced through staggered arrangement, the stability of the shell and the overall structure is guaranteed, a reed is composed of a first reed body and a second reed body, and through cooperation of a first bent part and a second bent part and a linkage plate insertion hole, the locking effect is good. And the contact area and the friction force are reduced by using the abutting strip, so that the reed can accurately respond to the action of the linkage plate, the action accuracy and the response speed of the relay are improved, the abrasion is reduced, and the service life is prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of magnetic latching relay technology, specifically a magnetic latching relay with optimized structure. Background Technology

[0002] A magnetic latching relay is an electronic control device that plays a role in automatic adjustment, safety protection, and circuit switching in circuits. Magnetic latching relays have a wide range of applications. In industrial automation, they are commonly used for starting, stopping, and controlling the forward and reverse rotation of motors to ensure stable operation of the production process. In smart homes, they enable remote control and status maintenance of home appliances, such as remembering the on / off status of lights in smart lighting systems. In power systems, they control and monitor the status of switching equipment in substations to ensure the reliability of power supply. Magnetic latching relays also play a crucial role in many other fields such as communication equipment and automotive electronics, providing a guarantee for the stable operation of various devices.

[0003] Existing magnetic latching relays mainly consist of the following components: magnet, coil, armature, iron core, etc. The contact system includes moving and stationary contacts and contact springs. Other components include base, cover plate, etc. Its working principle is as follows: when a forward or reverse pulse current is applied to the coil, the coil generates a magnetic field, which is reinforced by the iron core and exerts a force on the contact system, causing the moving and stationary contacts to close or separate, thereby realizing the circuit opening and closing. After the coil is de-energized, due to the hysteresis characteristics of the internal permanent magnet and iron core, the armature maintains its position, and the contact state remains unchanged until a reverse pulse current is applied.

[0004] Currently, magnetic latching relays have the following drawbacks: the relay housing connection structure uses a simple snap-fit ​​connection method, which is prone to loose connections, affecting product production efficiency and quality. In actual use, once subjected to external forces such as vibration and impact, the housing is prone to loosening, resulting in poor anti-loosening performance and failing to guarantee the stability of the overall relay structure. This, in turn, affects the normal operation of the relay and increases the probability of failure. Utility Model Content

[0005] To overcome the shortcomings of existing magnetic latching relays, a structurally optimized magnetic latching relay is proposed.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A magnetic latching relay with optimized structure, comprising a housing, the housing including a base and a cover plate fixedly mounted on the base via a snap-fit ​​mechanism; a moving plate assembly, a stationary plate assembly, and an armature assembly rotatably disposed within the base for connecting or disconnecting the moving plate assembly and the stationary plate assembly; a coil assembly for reciprocating pivoting of the armature assembly, the moving plate assembly including a moving plate, a spring, and a moving contact; the stationary plate assembly including a stationary plate and a stationary contact; the moving plate assembly and the stationary plate assembly are staggered vertically, and one end of both the moving plate and the stationary plate extends beyond the base; the armature assembly including an armature body, a mounting base, and a linkage plate for linking the armature body and the spring; and the coil assembly including a wire frame, on which pins for controlling the coil assembly are fixedly disposed.

[0007] Preferably, the latching mechanism has multiple arrays and is staggered around the base and cover plate. The latching mechanism includes a latching groove on the outer wall of the base, in which a latching block is fixedly disposed. It also includes a latching ear on the cover plate that mates with the latching groove. The latching ear has a latching hole that mates with the latching block. The entrance of the latching block and the entrance of the latching ear both have a bevel that mates with each other. An arc-shaped sliding groove is provided on one side of the latching block. A spherical locking groove is provided in the arc-shaped sliding groove. A locking ball that mates with the arc-shaped sliding groove and the spherical locking groove is fixedly disposed on one side of the inner wall of the latching hole.

[0008] Preferably, the position of the arc-shaped groove is staggered with the position of the locking ball.

[0009] Preferably, the spring includes a first spring and a second spring, and the linkage plate has a socket for both to pass through. The end of the first spring inserted into the socket is provided with a first bend, and the second spring is provided with a second bend that abuts against the inner wall of the socket.

[0010] Preferably, both the first and second springs have abutment strips on their contact surfaces with the inner wall of the socket.

[0011] Preferably, both the moving plate and the stationary plate have mesh grooves on their sidewalls, and the mesh grooves are cross-shaped and inclined at an angle.

[0012] The beneficial effects of this utility model are:

[0013] 1. Connection stability and assembly convenience: The housing is connected by multiple sets of interlocking snap-fit ​​mechanisms distributed around the base and cover plate. The tight fit between the locking ball and the spherical locking groove, as well as the pre-tightening effect generated by the interlocking of the arc-shaped sliding groove and the locking ball, not only ensures the reliability of the connection during assembly, but also greatly enhances the anti-loosening performance of the snap-fit ​​mechanism when the relay is in use. It effectively resists the influence of external forces such as vibration and impact, and ensures the firmness of the housing connection and the stability of the overall structure of the relay.

[0014] 2. Reed and Linkage Plate Structure: The abutment strip reduces the contact area between the reed and the inner wall of the socket, reducing friction and enabling the reed to respond more sensitively and smoothly to the action of the linkage plate. It accurately converts the swing of the armature body into the movement of the moving piece, realizing reliable connection and disconnection between the moving and stationary contacts. This greatly improves the accuracy and response speed of the relay action. Furthermore, the lower friction significantly reduces the wear of the reed and the inner wall of the socket during frequent operation, extending the service life of the reed and linkage plate, reducing maintenance costs, and ensuring the long-term stable operation of the relay. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0016] Figure 1 This is a structural diagram of the base of this utility model;

[0017] Figure 2 This is a side view of the casing of this utility model;

[0018] Figure 3 This is a utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0019] Figure 4 This is a structural cross-sectional view of the buckle mechanism of this utility model;

[0020] Figure 5 This is a first three-dimensional view of the reed and linkage plate of this utility model;

[0021] Figure 6 This is a second three-dimensional view of the reed and linkage plate of this utility model;

[0022] Figure 7 This is a three-dimensional structural view of the entire utility model;

[0023] Legend:

[0024] 1. Housing; 01. Base; 02. Cover plate; 03. Snap-fit ​​mechanism; 3. Moving plate assembly; 301. Snap-fit ​​groove; 302. Snap-fit ​​block; 303. Snap-fit ​​ear; 304. Snap-fit ​​hole; 305. Arc-shaped slide groove; 306. Locking ball; 307. Spherical locking groove; 4. Stationary plate assembly; 5. Armature assembly; 6. Coil assembly; 7. Moving plate; 8. Spring; 801. First spring; 8011. First bend; 802. Second spring; 8021. Second bend; 9. Moving contact; 10. Stationary plate; 11. Stationary contact; 12. Armature body; 13. Assembly base; 14. Linkage plate; 1401. Insertion hole; 15. Wire frame; 16. Pin; 17. Abutment strip; 18. Mesh groove. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Specific implementation examples are given below.

[0027] Please see Figures 1-7The present invention discloses a magnetic latching relay with optimized structure, comprising a housing 1, wherein the housing 1 includes a base 01 and a cover plate 02 fixedly mounted on the base 01 by a snap-fit ​​mechanism 03. The base 01 contains a moving plate assembly 3, a stationary plate assembly 4, and an armature assembly 5 rotatably disposed within the base 01 for connecting or disconnecting the moving plate assembly 3 and the stationary plate assembly 4. The base 01 also contains a coil assembly 6 for reciprocating pivoting of the armature assembly 5. The moving plate assembly 3 includes a moving plate 7, a spring 8, and a moving contact 9. The stationary plate assembly 4 includes a stationary plate 10 and a stationary contact 11. The moving plate assembly 3 and the stationary plate... Component 4 is arranged in an alternating vertical configuration, with one end of both the moving piece 7 and the stationary piece 10 extending beyond the base 01. The armature assembly 5 includes an armature body 12, a mounting base 13, and a linkage plate 14 for linking the armature body 12 and the spring 8. The coil assembly 6 includes a wire frame 15, on which pins 16 for controlling the coil assembly 6 are fixedly mounted. The latching mechanism 03 has multiple arrays arranged in an alternating manner around the base 01 and the cover plate 02. The latching mechanism 03 includes a slot 301 formed on the outer wall of the base 01, in which a latching block 302 is fixedly mounted, and also includes a latching block 302 mounted on the cover plate 02. A latching ear 303 mates with the latching slot 301. The latching ear 303 has a latching hole 304 that mates with the latching block 302. Both the entrance of the latching block 302 and the entrance end of the latching ear 303 have matching bevels. An arc-shaped groove 305 is formed on one side of the latching block 302, and a spherical locking groove 307 is formed within the arc-shaped groove 305. A locking ball 306, which mates with the arc-shaped groove 305 and the spherical locking groove 307, is fixedly disposed on one side of the inner wall of the latching hole 304. The positions of the arc-shaped groove 305 and the locking ball 306 are staggered. During operation, when the external circuit supplies power to the coil assembly through pin 16... When component 6 is energized, current flows in the coil on the frame 15. According to Ampere's law, a corresponding magnetic field is generated. Under the action of this magnetic field, the armature body 12 is attracted or repelled by electromagnetic force and reciprocates around the mounting base 13. The swing of the armature body 12 is transmitted to the spring 8 through the linkage plate 14, causing the spring 8 to undergo elastic deformation, which in turn drives the moving piece 7 to move. When the moving piece 7 moves to a certain position, the moving contact 9 contacts the stationary contact 11, and the circuit is connected. Conversely, when the coil assembly 6 is de-energized or a reverse current is applied to change the direction of the magnetic field, the armature body 12 swings in the opposite direction, the moving contact 9 separates from the stationary contact 11, and the circuit is disconnected.When assembling the housing 1, align the snap-fit ​​ear 303 on the cover plate 02 with the snap-fit ​​groove 301 on the base 01. Since both the inlet of the snap-fit ​​block 302 and the inlet of the snap-fit ​​ear 303 have matching bevels, this bevel design serves as a guide, allowing the snap-fit ​​ear 303 to be inserted more smoothly into the snap-fit ​​groove 301. As the snap-fit ​​ear 303 is inserted, the locking ball 306 on the inner wall of the snap-fit ​​hole 304, due to its slight misalignment with the arc-shaped slide groove 305, will be subjected to a certain amount of pressure from the arc-shaped slide groove 305. As the assembly force continues to be applied, the locking ball 306 begins to gradually slide into the arc-shaped slide groove 305. The arc-shaped slide groove 305 can guide the locking ball 306 to move smoothly. When the locking ball 306 slides to the position of the spherical locking groove 307, due to the special shape of the spherical locking groove 307 matching the locking ball 306, the locking ball 306 will be engaged in the spherical locking groove 307, realizing the connection between the base 01 and the cover. The robust connection of plate 02; In terms of structural design, the staggered arrangement of the moving plate assembly 3 and the stationary plate assembly 4 effectively utilizes the internal space of the base 01, making the overall structure of the relay more compact; Regarding the assembly of the housing 1, multiple sets of snap-fit ​​mechanisms 03 are staggered around the perimeter, which can evenly distribute the connection force, making the connection of the housing 1 more stable. The staggered positions of the arc-shaped sliding groove 305 and the locking ball 306 play a pre-tightening role during assembly, ensuring the reliability and stability of the connection between the base 01 and the cover plate 02. During the use of the relay, when subjected to external forces such as vibration and impact, this staggered arrangement increases the resistance of the locking ball 306 to disengage from the spherical locking groove 307, further enhancing the anti-loosening performance of the snap-fit ​​mechanism and improving the robustness of the connection of the housing 1, thereby ensuring the stability and reliability of the overall relay structure.

[0028] Furthermore, the spring 8 includes a first spring 801 and a second spring 802. The linkage plate 14 has an insertion hole 1401 for both to pass through. The end of the first spring 801 inserted into the insertion hole 1401 is provided with a first bent portion 8011, and the second spring 802 is provided with a second bent portion 8021 that abuts against the inner wall of the insertion hole 1401. Both the first spring 801 and the second spring 802 have a contact surface with the inner wall of the insertion hole 1401. There is an abutment bar 17; during operation, when the armature body 12 swings around the mounting base 13 under the action of a magnetic field, the linkage plate 14 moves accordingly. The insertion hole 1401 serves as the connection point between the linkage plate 14 and the spring 8. Its inner wall exerts a force on the first spring 801 and the second spring 802 inserted therein. The first bend 8011 limits the first spring 801 within the insertion hole 1401, preventing the first spring 801 from coming out during the movement of the linkage plate 14. The second bend... The fold 8021 abuts tightly against the inner wall of the socket 1401, providing radial support and positioning for the second spring 802. This ensures that the second spring 802 can accurately transmit power under the drive of the linkage plate 14. During the movement of the linkage plate 14, the opposing surfaces of the first spring 801 and the second spring 802 against the inner wall of the socket 1401 will contact the inner wall of the socket 1401. The abutment strip 17 is located on this contact surface. Its function is to reduce the actual contact area between the first spring 801 and the second spring 802 and the inner wall of the socket 1401. The reduction in contact area will reduce the negative impact of friction. The smaller friction will make the movement of the spring 8 within the socket 1401 smoother and more responsive to the action of the linkage plate 14. This will accurately convert the swing of the armature body 12 into the movement of the moving piece 7, achieving reliable connection and disconnection between the moving contact 9 and the stationary contact 11. Furthermore, the wear between the spring 8 and the inner wall of the socket 1401 will be significantly reduced.

[0029] Furthermore, both the moving plate 7 and the stationary plate 10 have mesh grooves 18 on their sidewalls. These mesh grooves 18 are cross-shaped and angled at 45°. During operation, when welding the external conductor to the moving plate 7 or stationary plate 10, the solder becomes liquid after heating and wets the welding area. The cross-shaped, angled mesh grooves 18 provide more adhesion points and flow channels for the liquid solder. When the liquid solder contacts the surface of the moving plate 7 or stationary plate 10, it flows and diffuses along the grooves 18. Due to the special structure of the mesh grooves 18, the solder can be more evenly distributed in the welding area, avoiding local accumulation or gaps. Furthermore, the mesh grooves 18 increase the contact area between the moving plate 7, stationary plate 10, and the solder. Based on the principle of intermolecular forces, a larger... The increased contact area strengthens the bond between the solder and the moving piece 7 and the stationary piece 10, thus improving the weld's strength. Simultaneously, the shrinkage of the welded area during cooling generates significant internal stress, potentially leading to cracks or loosening. The mesh groove 18 disperses this internal stress, ensuring even distribution throughout the weld area and reducing weld defects caused by stress concentration. This structural design ensures a uniform solder distribution, guaranteeing a good electrical connection between the external conductor and the moving piece 7 and the stationary piece 10. It also reduces contact resistance, power loss, and heat generation, improving the relay's electrical performance. Furthermore, the stronger bond makes the welded area more robust, capable of withstanding greater mechanical vibration and impact, thus extending the relay's lifespan.

[0030] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A structurally optimized magnetic latching relay, characterized by: The utility model provides a shell (1) including base (01) and the cover (02) of buckle mechanism (03) fixed assembly on base (01), base (01) is assembled with moving piece assembly (3), static sheet subassembly (4) and the armature assembly (5) for moving piece assembly (3) and static sheet subassembly (4) are connected or disconnected of rotation setting in base (01), base (01) is assembled with coil assembly (6) for reciprocating pivot swing of armature assembly (5), moving piece assembly (3) includes moving piece (7), spring piece (8), dynamic contact (9), static sheet subassembly (4) includes static sheet (10), static contact (11), moving piece assembly (3) and static sheet subassembly (4) are staggered and set up, and the both ends of moving piece (7) and static sheet (10) extend outside base (01), armature assembly (5) includes armature body (12), assembly seat (13) and the linkage board (14) for linkage armature body (12) and spring piece (8), coil assembly (6) includes wire holder (15), wire holder (15) is fixedly provided with pin (16) for controlling coil assembly (6) on.

2. A structurally optimized magnetic latching relay according to claim 1, characterized in that: The buckle mechanism (03) has a plurality of and is staggered and set up in the four around base (01) and cover (02), the buckle mechanism (03) includes the clamping groove (301) of setting in the outer wall of base (01), the clamping groove (301) is fixedly provided with the clamping block (302) in, still include the clamping lug (303) of setting in cover (02) and the clamping groove (301) cooperation, the clamping lug (303) is set up the clamping hole (304) of cooperation with the clamping block (302) in, the entry of clamping block (302) and the entry end of clamping lug (303) are all set up the bevel of cooperation, the one side of clamping block (302) is set up the arc sliding slot (305), the arc sliding slot (305) is set up the spherical lock slot (307) in, the inner wall one side of clamping hole (304) is fixedly provided with the lock ball (306) with the cooperation of arc sliding slot (305) and spherical lock slot (307).

3. A structurally optimized magnetic latching relay according to claim 2, characterized in that: The position of the arc sliding slot (305) is staggered with the position of the lock ball (306).

4. A structurally optimized magnetic latching relay according to claim 1, characterized in that: The spring piece (8) includes a first spring piece (801) and a second spring piece (802), the linkage board (14) is provided with a jack (1401) for the two to pass in, the first spring piece (801) is provided with a first bending part (8011) at the end of the jack (1401), and the second spring piece (802) is provided with a second bending part (8021) abutting against the inner wall of the jack (1401).

5. A structurally optimized magnetic latching relay according to claim 4, characterized in that: The first spring piece (801) and the second spring piece (802) are provided with abutting strips (17) on the contact surfaces of the inner walls of the jacks (1401).

6. A structurally optimized magnetic latching relay according to claim 1, characterized in that: The sidewalls of the moving piece (7) and the static sheet (10) are provided with meshed grooves (18), and the meshed grooves (18) are cross-shaped and inclined at 45°.

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