Arc extinguishing magnetic latching relay

Abstract

The utility model discloses an arc extinguishing magnetic latching relay comprising a housing comprising a pedestal and an upper cover covering the pedestal, and the pedestal is provided with a spacing groove; the magnetic circuit driving part comprises a coil, an iron core, a yoke, an armature, a rotating frame and a pushing frame; the contact part comprises a movable spring module and a static spring module, the static spring module comprises a static spring sheet and a static contact arranged on the static spring sheet, the movable spring module comprises a movable spring sheet and a movable contact arranged on the movable spring sheet, and the movable spring sheet is connected to the pushing frame and can be driven by the pushing frame to drive the movable contact and the static contact to be closed or separated. A clamping groove is formed in the side, facing the base, of the static reed. And the magnetic piece is clamped in the clamping groove and is inserted into the limiting groove. According to the relay capable of extinguishing the arc, the magnetic piece is clamped in the clamping groove of the static reed and the limiting groove of the base, installation of the magnetic piece is facilitated, the arc extinguishing effect can be achieved through arrangement of the magnetic piece, and the service life of the relay is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of relays, in particular to an arc-extinguishing magnetic latching relay. Background Art

[0002] Electromagnetic relay is an electrical device that uses electromagnetic force to drive mechanical parts to move relative to each other and produce a predetermined response. It is generally composed of a magnetic circuit part, a moving spring part, and a static spring part. The magnetic circuit part includes an iron core, a frame, a coil, an armature, and a yoke. When the coil passes through current, electromagnetic force is generated, and the armature is attracted and contacts the pole surface at one end of the iron core, thereby driving the moving contact of the moving spring part and the static contact of the static spring part to close; when the current in the coil disappears, the electromagnetic force disappears, and the armature resets and separates from the pole surface at one end of the iron core, thereby separating the moving contact of the moving spring part from the static contact of the static spring part. In this way, the purpose of conducting or cutting off the circuit of the external load is achieved through the contact or separation of the moving contact and the static contact.

[0003] When the relay is in use, an arc will be generated when the moving contact and the static contact are separated. The arc is a charged particle, which will cause contact erosion. Excessive contact erosion will shorten the service life of the entire relay product. Utility Model Content

[0004] In order to solve at least one problem existing in the above-mentioned prior art, according to one aspect of the utility model, an arc-extinguishing magnetic latching relay is provided, comprising:

[0005] The housing comprises a base and an upper cover arranged on the base, wherein the base is provided with a limiting groove;

[0006] The magnetic circuit driving part includes a coil, an iron core, a yoke, an armature, a rotating frame and a pushing frame;

[0007] The contact part includes a dynamic spring module and a static spring module, wherein the static spring module includes a static spring sheet and a static contact point arranged on the static spring sheet, and the dynamic spring module includes a dynamic spring sheet and a dynamic contact point arranged on the dynamic spring sheet. The dynamic spring sheet is connected to the pushing frame and can drive the dynamic contact point and the static contact point to close or separate under the drive of the pushing frame. A card slot is provided on the side of the static spring sheet facing the base;

[0008] The magnetic part is clamped in the clamping slot and plugged into the limiting slot.

[0009] In some embodiments, along the height direction of the housing, two static contacts are provided on the static spring sheet, two moving contacts are provided on the moving spring sheet, one moving contact and one static contact are closed correspondingly, and the height of the magnetic member is greater than the length of a line connecting the center points of the two static contacts.

[0010] In some embodiments, the thickness of the magnetic member is greater than the thickness of the static reed.

[0011] In some embodiments, along the thickness direction of the static reed sheet, at least one side of the magnetic member protrudes from the static reed sheet.

[0012] In some embodiments, one side of the magnetic member protrudes from the static spring sheet, and the other side is hidden in the slot, and a first rib is provided on the slot wall of the limiting slot, and the first rib is used to abut against the other side of the magnetic member.

[0013] In some embodiments, a support platform is provided on the bottom wall of the limiting groove, and the support platform is used to support the magnetic member.

[0014] In some embodiments, a second rib is provided on the groove wall of the limiting groove, and the second rib extends along the height direction of the shell and is used to abut against the static spring sheet.

[0015] In some embodiments, the base is provided with a limiting rib inside, and the limiting rib is surrounded to form the limiting groove.

[0016] In some embodiments, notches are formed at both ends of the static spring sheet along its length direction, and the notches are connected to the slot.

[0017] In summary, the arc-extinguishing magnetic latching relay provided by the utility model has the following technical effects:

[0018] By arranging a slot on the static spring piece and a limiting slot on the base, the magnetic part can be clamped on the static spring piece and in the slot, thereby achieving the limitation and fixation of the magnetic part. The installation method is simple, and since the magnetic part is pressed between the static spring piece and the limiting slot, a stable installation can be achieved; therefore, when the static contact and the moving contact are separated to generate an arc, under the action of the magnetic field of the magnetic part, the arc formed by the charged particles will move in a direction away from the moving contact and the static contact, thereby achieving the effect of extinguishing the arc, thereby achieving the improvement of the relay's load breaking capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of a relay according to an embodiment of the utility model;

[0020] Figure 2 for Figure 1 The schematic diagram of the structure of the relay after the cover is hidden;

[0021] Figure 3 for Figure 2 The enlarged schematic diagram of point I in the middle;

[0022] Figure 4for Figure 2 A schematic diagram of the structure of the static reed and the magnetic member;

[0023] Figure 5 for Figure 1 A schematic diagram of the structure of the base;

[0024] Figure 6 for Figure 5 Enlarged schematic diagram of point II in the middle.

[0025] Figures: 100-arc extinguishing magnetic holding relay, 10-housing, 11-base, 111-limiting groove, 1111-first receiving part, 1112-second receiving part, 112-first convex rib, 113-support platform, 114-second convex rib, 12-upper cover, 13-limiting rib, 20-magnetic circuit driving part, 21-coil, 23-yoke, 24-armature, 25-rotating frame, 26-pushing frame, 30-contact part, 31-moving spring module, 311-moving spring sheet, 312-moving contact, 313-moving spring mounting frame, 32-static spring module, 321-static spring sheet, 3211-slot, 3212-notch, 3213-side ear, 322-static contact, 40-magnetic part. DETAILED DESCRIPTION

[0026] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0027] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0029] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0030] See also Figures 1 to 6 , an arc-extinguishing magnetic latching relay 100 provided in an embodiment of the utility model includes a housing 10, a magnetic circuit driving part 20, a contact part 30 and a magnetic member 40.

[0031] Among them, see Figure 1 and Figure 2 The housing 10 includes a base 11 and an upper cover 12 arranged on the base 11, and a limiting groove 111 is arranged on the base 11; the magnetic circuit driving part 20 includes a coil 21, an iron core, a yoke 23, an armature 24, a rotating frame 25 and a pushing frame 26; the contact part 30 includes a moving spring module 31 and a static spring module 32, the static spring module 32 includes a static spring piece 321 and a static contact 322 arranged on the static spring piece 321, the moving spring module 31 includes a moving spring piece 311 and a moving contact 312 arranged on the moving spring piece 311, the moving spring piece 311 is connected to the pushing frame 26, and can drive the moving contact 312 and the static contact 322 to close or separate under the drive of the pushing frame 26, and a slot 3211 is arranged on the side of the static spring piece 321 facing the base 11; the magnetic member 40 is clamped in the slot 3211 and inserted into the limiting groove 111.

[0032] The arc extinguishing magnetic latching relay 100 is provided with a slot 3211 on the static spring piece 321 and a limit slot 111 on the base 11, so as to clamp the magnetic component 40 on the static spring piece 321 and in the slot 3211, thereby realizing the limitation and fixation of the magnetic component 40. The installation method is simple, and since the magnetic component 40 is pressed between the static spring piece 321 and the limit slot 111, a stable installation can be realized; therefore, when the static contact 322 and the moving contact 312 are separated to generate an arc, under the action of the magnetic field of the magnetic component 40, the arc formed by the charged particles will move away from the moving contact 312 and the static contact 322, thereby achieving the effect of extinguishing the arc, thereby achieving the improvement of the relay's load breaking capacity.

[0033] Among them, see Figure 2 The iron core is passed through the coil 21. A yoke 23 is provided at each end of the coil 21 along the axial direction of the coil 21. Two armatures 24 and a permanent magnet are provided on the rotating frame 25. The two armatures 24 are provided on the opposite sides of the permanent magnet. The rotating frame 25 is rotatably arranged relative to the pushing frame 26. When the current is passed through or cut off through the coil 21, the rotating frame 25 rotates in different directions so that one armature 24 and one yoke 23 are kept in an attracted state correspondingly. At the same time, the rotation of the rotating frame 25 can push the pushing frame 26 to move, so that the moving contact 312 and the static contact 322 on the moving spring leaf 311 are driven by the pushing frame 26 to close or separate.

[0034] The moving direction of the pushing frame 26 is parallel to the axial direction of the coil 21 , and the rotating frame 25 is substantially perpendicular to the coil 21 and the pushing frame 26 .

[0035] Furthermore, along the height direction of the housing 10, two static contacts 322 are provided on the static spring piece 321, and two moving contacts 312 are provided on the moving spring piece 311. One moving contact 312 and one static contact 322 are closed in correspondence. The height of the magnetic component 40 is greater than the length of the line connecting the center points of the two static contacts 322. In this way, by setting a higher magnetic component 40, the arc generated at the center of each contact can be effectively extinguished, so as to achieve the effect of improving the arc extinguishing.

[0036] Among them, see Figure 3 and Figure 4 When the magnetic component 40 is set, the thickness of the magnetic component 40 is greater than the thickness of the static spring piece 321, thereby ensuring that the magnetic component 40 can generate sufficient magnetic field strength to ensure the arc extinguishing effect; at the same time, it is ensured that the magnetic component 40 can be stably inserted into the slot 3211 of the static spring piece 321 to ensure the stability of the installation.

[0037] Specifically, when the magnetic component 40 is installed in the slot 3211 of the static spring piece 321, along the thickness direction of the static spring piece 321, at least one side of the magnetic component 40 protrudes from the static spring piece 321, so that the other side of the magnetic component 40 can be flush with the static spring piece 321 or hidden in the static spring piece 321, thereby achieving the effect that the thickness of the magnetic component 40 is greater than the thickness of the static spring piece 321.

[0038] See also Figure 3 and Figure 4 When installing the magnetic component 40, in order to clamp the magnetic component 40 in the slot 3211 and the limiting slot 111, one side of the magnetic component 40 protrudes from the static spring sheet 321, and the other side is hidden in the slot 3211. A first rib 112 is provided on the slot wall of the limiting slot 111. The first rib 112 is used to abut against the other side of the magnetic component 40. In this way, by hiding the other side of the magnetic component 40 in the slot 3211 and providing the first rib 112 on the side wall of the limiting slot 111, the first rib 112 can extend into the slot 3211 to abut against the magnetic component 40, thereby clamping the magnetic component 40 on the side wall of the limiting slot 111.

[0039] For further information, see Figure 5 and Figure 6 In order to reduce the installation cost of the magnetic component 40, a support platform 113 is provided on the bottom wall of the limiting groove 111, and the support platform 113 is used to support the magnetic component 40. That is, on the basis that the height of the magnetic component 40 is greater than the length of the line connecting the center points of the two static contacts 322, by setting the support platform 113, the support platform 113 can have a certain extended height, so that the setting of the support platform 113 can reduce the setting height of the magnetic component 40, thereby reducing the setting cost of the magnetic component 40.

[0040] Furthermore, in order to stably install the static spring piece 321 on the base 11, a second convex rib 114 extending along the height direction of the shell 10 is provided on the groove wall of the limiting rib 13, and the second convex rib 114 is used to resist the static spring piece 321. In this way, by providing the second convex rib 114 on the groove wall of the limiting groove 111, a resisting force can be applied to the static spring piece 321. Specifically, since the static spring piece 321 is provided with limiting grooves 111 at both ends in the length direction, the second convex ribs 114 on the groove walls of the two limiting grooves 111 clamp the two sides of the static spring piece 321, thereby achieving the effect of stable installation of the static spring piece 321 on the base 11.

[0041] Among them, see Figure 5 and Figure 6 In this embodiment, when the limiting groove 111 is set on the base 11, the base 11 is provided with a limiting rib 13, and the limiting rib 13 is surrounded to form the limiting groove 111. In this way, the limiting groove 111 is formed by the limiting rib 13, which is relatively different from the method of directly opening a groove on the bottom wall of the base 11. It is possible to set a limiting groove 111 with a certain depth, thereby ensuring the installation strength of the magnetic part 40 and the static spring sheet 321, and ensuring the structural strength of the base 11.

[0042] In addition, in order to reduce the use cost of the static spring piece 321, notches 3212 are formed at both ends of the static spring piece 321 along its own length direction, and the notches 3212 are connected to the card slot 3211, that is, two side ears 3213 are formed on the static spring piece 321 along the length direction of the static spring piece 321, that is, by forming the notch 3212, the position where the notch 3212 is located does not need to be formed into a movable spring piece 311, thereby reducing the material for forming the movable spring piece 311, thereby achieving the effect of reducing the cost of the movable spring piece 311.

[0043] Specifically, the limiting groove 111 of this embodiment includes two parts: a first receiving portion 1111 and a second receiving portion 1112 for mounting the magnetic part 40, the first receiving portion 1111 is used to mount the magnetic part 40, and the second mounting portion is used to accommodate the side ear 3213, that is, the first rib 112 is arranged on the first receiving portion 1111, and the second rib 114 is arranged on the second receiving portion 1112.

[0044] The magnetic member 40 of this embodiment is a magnetic steel.

[0045] The arc extinguishing magnetic latching relay 100 is capable of ensuring the installation strength of the magnetic component 40 by providing an extended limiting rib 13 on the base 11 and forming a limiting groove 11 through the limiting rib 13; and the arc extinguishing effect is ensured when each static contact 322 and the moving contact 312 are separated by setting the extended height of the magnetic component 40 along the height direction of the base 11 to be greater than the length of the line connecting the centers of the two static contacts 322.

[0046] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. An arc-extinguishing magnetic latching relay, characterized in that: include: The housing (10) comprises a base (11) and an upper cover (12) arranged on the base (11), wherein the base (11) is provided with a limiting groove (111); The magnetic circuit driving part (20) comprises a coil (21), an iron core, a yoke (23), an armature (24), a rotating frame (25) and a pushing frame (26); The contact portion (30) comprises a movable spring module (31) and a static spring module (32), wherein the static spring module (32) comprises a static spring sheet (321) and a static contact (322) arranged on the static spring sheet (321), and the movable spring module (31) comprises a movable spring sheet (311) and a movable contact (312) arranged on the movable spring sheet (311), wherein the movable spring sheet (311) is connected to the pushing frame (26) and can drive the movable contact (312) and the static contact (322) to close or separate under the drive of the pushing frame (26), and a clamping groove (3211) is provided on a side of the static spring sheet (321) facing the base (11); The magnetic member (40) is clamped in the clamping slot (3211) and inserted in the limiting slot (111).

2. The arc-extinguishing magnetic latching relay according to claim 1, characterized in that: Along the height direction of the housing (10), the static spring piece (321) is provided with two static contacts (322), the dynamic spring piece (311) is provided with two dynamic contacts (312), one dynamic contact (312) and one static contact (322) are correspondingly closed, and the height of the magnetic member (40) is greater than the length of a line connecting the center points of the two static contacts (322).

3. The arc-extinguishing magnetic latching relay according to claim 1 or 2, characterized in that: The thickness of the magnetic member (40) is greater than the thickness of the static spring sheet (321).

4. The arc-extinguishing magnetic latching relay according to claim 3, characterized in that: Along the thickness direction of the static reed sheet (321), at least one side of the magnetic member (40) protrudes from the static reed sheet (321).

5. The arc-extinguishing magnetic latching relay according to claim 4, characterized in that: One side of the magnetic member (40) protrudes from the static spring sheet (321), and the other side is hidden in the clamping groove (3211); a first convex rib (112) is provided on the groove wall of the limiting groove (111), and the first convex rib (112) is used to abut against the other side of the magnetic member (40).

6. The arc-extinguishing magnetic latching relay according to claim 1 or 2, characterized in that: A support platform (113) is provided on the bottom wall of the limiting groove (111), and the support platform (113) is used to support the magnetic component (40).

7. The arc-extinguishing magnetic latching relay according to claim 1 or 2, characterized in that: A second convex rib (114) is provided on the groove wall of the limiting groove (111), and the second convex rib (114) extends along the height direction of the housing (10) and is used to abut against the static spring sheet (321).

8. The arc-extinguishing magnetic latching relay according to claim 1 or 2, characterized in that: The base (11) is provided with a limiting rib (13) inside, and the limiting rib (13) is surrounded to form the limiting groove (111).

9. The arc-extinguishing magnetic latching relay according to claim 1 or 2, characterized in that: Notches (3212) are formed at both ends of the static spring sheet (321) along its length direction, and the notches (3212) are connected to the clamping slot (3211).

Images