High-stroke large-gap magnetic latching relay

Abstract

The utility model relates to the technical field of magnetic latching relays, in particular to a high-stroke and large-gap magnetic latching relay, which comprises a base, a microswitch, a coil, a support frame, a magnetic steel assembly, a push piece and a plurality of contact assemblies, the coil is mounted on the left side of the bottom of the base, the magnetic steel assembly is arranged on the right side of the coil, and the support frame is fixed on the outer side of the magnetic steel assembly. A pushing rod arranged on the right side of the magnetic steel assembly is inserted into a connecting groove in the bottom of a pushing piece, a microswitch is arranged on the lower side of the pushing piece, a plurality of contact assemblies are clamped to the pushing piece, and the pushing piece is clamped to the middle position of the inner side of a movable contact on a conductive piece in the contact assemblies. According to the utility model, the push sheet is arranged in the middle, and the push sheet moves for a small distance to realize that the contact end moves for a large distance, so that the overall response speed and safety are improved; and the stainless steel elastic sheet which is integrally formed by slotting is arranged, so that the action independence of the two contacts is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic latching relays, and more specifically, the utility model relates to a magnetic latching relay with a high stroke and a large gap.

Background Art

[0002] In recent years, with the rapid development of the electronic information industry, relays, as basic components, have been widely used in automation control fields such as household appliances, communications, automobiles, instrumentation, machinery and equipment, and aerospace. Recent statistical data shows that among electronic component products, relays have become the largest product in terms of annual sales. The magnetic latching relay is a new type of relay developed in recent years. As one of the important components for intelligent control, it plays an important role. Like other electromagnetic relays, it automatically connects and disconnects the circuit. The difference is that the normally closed or normally open state of the magnetic latching relay completely depends on the action of the permanent magnet, and the conversion of its switch state is completed by triggering a pulse electrical signal with a certain width. It has the characteristics of power saving, stable performance, small volume, large load capacity, and superior performance compared with other relays. Therefore, magnetic latching relays are increasingly widely used.

[0003] An existing three-phase 120A double-contact relay with the publication number of CN 216957905 U includes a housing and a contact assembly. The contact assembly includes a static reed, a moving reed lead-out piece, and a moving reed. The head end of the static reed is fixed to the housing, and the tail end passes through the housing and is suspended. The head end of the moving reed lead-out piece is fixed to the housing, and the tail end passes through the housing and is suspended. The head end of the moving reed is fixed to the middle position of the moving reed lead-out piece, and the tail end is suspended. The middle position of the moving reed is bent away from the moving reed lead-out piece to form a U-shaped arch. Each moving reed is provided with two U-shaped arches, the two U-shaped arches are arranged side by side, and a first gap is provided between them. Two female contacts are arranged side by side on the static reed, and a male contact corresponding to and matching the female contact is provided at the tail end of the moving reed. This utility model can protect the contacts, and existing double-contact relays all adopt a transmission plate arranged on one side of the conductive sheet to control the up and down movement of the conductive sheet, so as to achieve the closing and opening of the contacts. However, this method of closing and opening requires the transmission plate to move a long distance, resulting in the insensitivity of the contact assembly.

[0004] An existing magnetic latching relay, with the publication number CN 115440539 A, includes a coil assembly and an armature assembly. The coil assembly includes a coil body and two yokes provided on the coil body. The armature assembly includes two armatures, a permanent magnet, and an enclosure. The permanent magnet is stacked between the two armatures to form an I-shape and is fixed together by the enclosure. One end of one yoke is fitted between one ends of the two armatures, and one end of the other yoke is fitted between the other ends of the two armatures. Each yoke and the two armatures are respectively provided with a concave-convex assembly for reducing the magnetic gap. The concave-convex assembly includes a convex part provided on one of the yoke and the armature and a concave part provided on the other of the yoke and the armature, and the convex part and the concave part are opposite to each other. When each yoke and the corresponding armature are attracted to each other, the convex part on the attracting part is embedded into the concave part. In this magnetic latching relay, the push piece is arranged outside the contact, resulting in a larger stroke required for the armature assembly to drive the push piece to ensure that the distance between the upper and lower contacts is sufficiently separated, so a magnetic latching relay with a larger size is required to control the closing and separation of the contacts.

Utility Model Content

[0005] In order to overcome the above defects of the prior art, the purpose of the present utility model is to provide a magnetic latching relay with a high stroke and a large gap, with the push piece arranged in the middle, so that the push piece can control the large-distance movement of one side of the contact by moving a small distance, thereby better controlling the separation and closing of the contact.

[0006] To achieve the above purpose, the present utility model provides the following technical solution: A magnetic latching relay with a high stroke and a large gap, including a base, a microswitch, a coil, a support frame, a magnetic steel assembly, a push piece, and several contact assemblies. The coil is installed on the left side of the bottom of the base. A magnetic steel assembly is provided on the right side of the coil. A push rod provided on the right side of the magnetic steel assembly is inserted into a connection groove at the bottom of the push piece. A microswitch is provided on the lower side of the push piece. Several contact assemblies are clamped on the push piece. The push piece is clamped at the middle position inside the moving contact of the conductive piece in the contact assembly.

[0007] Preferably, the magnetic steel assembly includes a rotating body, a push rod, and an armature piece. The rotating body is rotatably connected to the support frame. A push rod is provided on the side of the rotating body close to the push piece. The push rod is connected to the connection groove at the lower end of the push piece. Armature pieces are provided on both the upper and lower sides of the rotating body. The armature pieces can be in contact connection with the L-shaped connection ends extending from both ends of the coil.

[0008] Preferably, the push piece includes a longitudinally arranged push piece body, a connection groove, and several contact grooves. A connection groove is opened to the left at the bottom of the push piece body. The upper side of the push piece body is equidistantly provided with the same number of contact grooves as the contact assemblies.

[0009] Preferably, the contact groove includes an upper contact piece and a lower contact piece.

[0010] Preferably, the contact assembly includes a moving spring lead piece, a static spring lead piece, a conductive piece, a moving contact, and a static contact. A plurality of contact assemblies are snap-connected to the upper side of the base, and the number of contact assemblies is more than one. The moving spring lead piece is connected to the conductive piece. A moving contact is provided on one side of the conductive piece away from the moving spring lead piece. A static contact is correspondingly arranged above the moving contact, and the static contact is fixedly arranged on the static spring lead piece.

[0011] Preferably, both the moving spring lead piece and the static spring lead piece extend out of the base.

[0012] Preferably, there are two sets of the moving contact and the static contact, which are arranged corresponding to each other up and down.

[0013] Preferably, the conductive piece includes a first conductive piece, a second conductive piece, a third conductive piece, and a stainless steel elastic piece. Slots are opened in the centers of the first conductive piece, the second conductive piece, and the third conductive piece, and moving contacts are respectively arranged on both sides. The first conductive piece, the second conductive piece, and the third conductive piece are stacked in a "ji" shape in sequence. A stainless steel elastic piece is bent downward on the side of the conductive piece away from the moving spring lead piece.

[0014] Preferably, the stainless steel elastic piece has a slot in the middle and is integrally formed. One side of the stainless steel elastic piece is fixed below the moving contact, and the other side is arranged in the contact slot.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] 1. In the magnetic latching relay with high stroke and large gap of the present utility model, the pushing piece is arranged in the middle position. That is to say, a small movement distance of the pushing piece can achieve a large movement distance of the contact end, making the contact separation interval larger, and the required time is reduced, improving the overall response speed and operation safety of the relay.

[0017] 2. In the magnetic latching relay with high stroke and large gap of the present utility model, the contact assembly is provided with a stainless steel elastic piece. The elastic piece adopts an integrally formed structure with a slot in the middle. While ensuring the independence and freedom of movement of the two contacts, it can respectively provide contact elastic force. Cooperating with the slots of the conductive piece enables the test contacts to have the ability to work independently, improving the practical performance of the relay.

[0018] 3. The magnetic latching relay with high stroke and large gap of the present utility model adopts a double-contact design, which can share the load and improve the overall current handling capacity of the relay. When one contact fails, the other can still keep working, improving the reliable performance of the relay. When the two contacts work simultaneously, the contact resistance is reduced, which can effectively reduce energy loss and heating conditions.

Description of the Drawings

[0019] Figure 1Schematic diagram of the structure of a magnetic latching relay with high stroke and large clearance according to the present utility model;

[0020] Figure 2 Exploded view of the structure of a magnetic latching relay with high stroke and large clearance according to the present utility model;

[0021] Figure 3 Cross-sectional view of the structure of a magnetic latching relay with high stroke and large clearance according to the present utility model;

[0022] Figure 4 Exploded view of the structure of the contact assembly of a magnetic latching relay with high stroke and large clearance according to the present utility model;

[0023] Figure 5 Schematic diagram of the structure of the magnet assembly of a magnetic latching relay with high stroke and large clearance according to the present utility model;

[0024] In the figure: 1 - base, 2 - micro switch, 3 - coil, 31 - connection end, 4 - support frame, 5 - magnet assembly, 51 - rotating body, 52 - push rod, 53 - armature plate, 6 - push piece, 61 - push piece main body, 62 - connection groove, 63 - contact groove, 7 - moving contact lead-out piece, 8 - static contact lead-out piece, 9 - conductive piece, 91 - conductive piece one, 92 - conductive piece two, 93 - conductive piece three, 94 - stainless steel elastic piece, 10 - moving contact, 11 - static contact.

Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] Refer to Figures 1 - 3 , in the embodiment of the present utility model, a magnetic latching relay with high stroke and large clearance includes a base 1, a micro switch 2, a coil 3, a support frame 4, a magnet assembly 5, a push piece 6, and several contact assemblies. The coil 3 is installed on the left side of the bottom of the base 1. A magnet assembly 5 is provided on the right side of the coil 3. A support frame 4 is fixed on the outside of the magnet assembly 5. The push rod 52 provided on the right side of the magnet assembly 5 is inserted into the connection groove 62 at the bottom of the push piece 6. A micro switch 2 is provided on the lower side of the push piece 6. Several contact assemblies are clamped on the push piece 6. The push piece 6 is clamped at the middle position inside the moving contact 10 of the conductive piece 9 in the contact assembly.

[0027] Refer to Figures 1 - 4, in the embodiment of the present utility model, a magnetic latching relay with a high stroke and a large gap, the contact assembly includes a moving spring lead piece 7, a static spring lead piece 8, a conductive piece 9, a moving contact 10, and a static contact 11. A plurality of contact assemblies are snap-connected to the upper side of the base 1, and the number of contact assemblies is more than one. The moving spring lead piece 7 is connected to the conductive piece 9. A moving contact 10 is provided on the side of the conductive piece 9 away from the moving spring lead piece 7. A static contact 11 is correspondingly arranged above the moving contact 10. The static contact 11 is fixedly arranged on the static spring lead piece 8. Two groups of the moving contact 10 and the static contact 11 are provided and arranged corresponding to each other up and down. The static contact 11 is arranged on the static spring lead piece 8. Both the moving spring lead piece 7 and the static spring lead piece 8 extend out of the base 1.

[0028] The conductive piece 9 includes a first conductive piece 91, a second conductive piece 92, a third conductive piece 93, and a stainless steel elastic piece 94. The first conductive piece 91, the second conductive piece 92, and the third conductive piece 93 are grooved in the center, and moving contacts 10 are respectively arranged on both sides. The first conductive piece 91, the second conductive piece 92, and the third conductive piece 93 are stacked in a "ji" shape in sequence. A stainless steel elastic piece 94 is bent downward on the side of the conductive piece 9 away from the moving spring lead piece 7. The stainless steel elastic piece 94 is grooved in the middle and integrally formed. One side of the stainless steel elastic piece 94 is fixed below the moving contact 10, and the other side of the stainless steel elastic piece 94 is arranged in the contact groove 63.

[0029] Refer to Figure 5 , in the embodiment of the present utility model, a magnetic latching relay with a high stroke and a large gap, the magnet assembly 5 includes a rotating body 51, a push rod 52, and an armature 53. The rotating body 51 is rotatably connected to the support frame 4. A push rod 52 is arranged on the side of the rotating body 51 close to the push piece 6. The push rod 52 is connected to the connection groove 62 at the lower end of the push piece 6. Armatures 53 are arranged on both the upper and lower sides of the rotating body 51. The armatures 53 can be in contact connection with the L-shaped connection ends 31 extending from both ends of the coil 3.

[0030] The utility model relates to a magnetic latching relay with a high stroke and a large gap. When in use, the coil 3 is energized. A magnetic steel assembly 5 is arranged between the L-shaped connection ends 31 extending from both ends of the coil 3. The magnetic steel assembly 5 on the support frame 4 rotates clockwise around the axis, so that the two sides of the armature piece 53 contact the L-shaped connection end 31. At the same time, the push rod 52 on the magnetic steel assembly 5 also rotates clockwise. The rotation of the push rod 52 drives the connection groove 62 downward, controls the overall downward displacement of the push piece 6, and the lower side of the push piece 6 contacts the stainless steel push rod under the micro switch 2, realizing the control of the displacement of the push piece 6. The downward displacement of the push piece 6 causes the conductive sheet 9 in the upper contact groove 63 to bend downward. The moving contact 10 at one end of the conductive sheet 9 is separated from the static contact 11, and the loop of the contact assembly is disconnected. When the current is reversed, the magnetic steel assembly 5 on the support frame 4 rotates counterclockwise around the axis, so that the other armature pieces 53 on both sides contact the L-shaped connection end 31. The push rod 52 on the magnetic steel assembly 5 rotates counterclockwise. The rotation of the push rod 52 drives the connection groove 62 upward, controls the overall upward displacement of the push piece 6. At this time, the conductive sheet 9 in the upper contact groove 63 resets upward, and the moving contact 10 at one end of the conductive sheet 9 is closed with the static contact 11, and the loop of the contact assembly is closed. The setting of multiple layers of conductive sheets 9 can improve the safety of the loop. During the transmission process, since the push piece 6 is longitudinally arranged in the middle position of the conductive sheet 9, when the push piece 6 is displaced, a large displacement will be generated at the contact end on one side of the conductive sheet 9, improving the overall response speed and operation safety of the relay.

[0031] The above embodiments are illustrative of the present utility model and not restrictive thereof. Any simple transformation of the present utility model falls within the protection scope of the present utility model.

Claims

1. A high-travel, large-gap magnetic latching relay, characterized in that: It includes a base (1), a microswitch (2), a coil (3), a support frame (4), a magnet assembly (5), a push piece (6), and several contact components. The coil (3) is installed at the left side of the bottom of the base (1). A magnet assembly (5) is provided on the right side of the coil (3). The support frame (4) is fixed on the outside of the magnet assembly (5). The push rod (52) provided on the right side of the magnet assembly (5) is inserted into the connection groove (62) at the bottom of the push piece (6). The microswitch (2) is provided on the lower side of the push piece (6). Several contact components are clamped on the push piece (6). The push piece (6) is clamped at the middle position inside the moving contact (10) of the conductive piece (9) in the contact component.

2. A high-travel, large-gap magnetic latching relay as claimed in claim 1, characterized in that: The magnet assembly (5) includes a rotating body (51), a push rod (52), and an armature plate (53). The rotating body (51) is rotatably connected to the support frame (4). The push rod (52) is provided on the side of the rotating body (51) close to the push piece (6). The push rod (52) is connected to the connection groove (62) at the lower end of the push piece (6). Armature plates (53) are provided on both the upper and lower sides of the rotating body (51). The armature plates (53) can be in contact connection with the L-shaped connection ends (31) extending from both ends of the coil (3).

3. A high-travel, large-gap magnetic latching relay as claimed in claim 1, characterized in that: The push piece (6) includes a longitudinally arranged push piece body (61), a connection groove (62), and several contact grooves (63). The connection groove (62) is opened to the left at the bottom of the push piece body (61). The same number of contact grooves (63) as the number of contact components are equidistantly arranged on the upper side of the push piece body (61).

4. A high-travel, large-gap magnetic latching relay as claimed in claim 3, characterized in that: The contact groove (63) includes an upper contact piece and a lower contact piece.

5. A high-travel, large-gap magnetic latching relay as claimed in claim 1, characterized in that: The contact component includes a moving spring lead-out piece (7), a static spring lead-out piece (8), a conductive piece (9), a moving contact (10), and a static contact (11). Several contact components are clamped on the upper side of the base (1), and the number of contact components is more than one. The moving spring lead-out piece (7) is connected to the conductive piece (9). A moving contact (10) is provided on the side of the conductive piece (9) away from the moving spring lead-out piece (7). A static contact (11) is correspondingly provided above the moving contact (10). The static contact (11) is fixedly arranged on the static spring lead-out piece (8).

6. A high-travel, large-gap magnetic latching relay as claimed in claim 5, characterized in that: Both the moving spring lead-out piece (7) and the static spring lead-out piece (8) extend out of the base (1).

7. A high-travel, large-gap magnetic latching relay as claimed in claim 5, characterized in that: There are two groups of the moving contact (10) and the static contact (11), which are arranged in an up-and-down corresponding manner.

8. A high-travel, large-gap magnetic latching relay as claimed in claim 5, characterized in that: The conductive piece (9) includes a conductive piece one (91), a conductive piece two (92), a conductive piece three (93), and a stainless steel elastic piece (94). The conductive piece one (91), the conductive piece two (92), and the conductive piece three (93) are provided with slots in the center, and moving contacts (10) are respectively arranged on both sides. The conductive piece one (91), the conductive piece two (92), and the conductive piece three (93) are stacked in a "ji" shape in sequence. The stainless steel elastic piece (94) is bent downward on the side of the conductive piece (9) away from the moving spring lead-out piece (7).

9. A high-travel, large-gap magnetic latching relay as claimed in claim 8, characterized in that: The stainless steel elastic sheet (94) is slotted in the middle and is integrally formed. One side of the stainless steel elastic sheet (94) is fixed below the moving contact (10), and the other side of the stainless steel elastic sheet (94) is arranged in the contact groove (63).

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