CN218867004U - Relay and push rod mechanism thereof - Google Patents

Abstract

The utility model discloses a relay and a push rod mechanism thereof, wherein the push rod mechanism comprises a push rod, an iron core and an anti-loose structure, the push rod comprises a rod part and an installation part, and the installation part is arranged at one end of the rod part and is used for installing a movable reed of the relay; the iron core is connected with the rod part, a limiting structure is arranged between the iron core and the rod part and is used for limiting the relative movement of the iron core and the rod part along the axial direction of the rod part; the anti-loosening structure is arranged between the iron core and the rod part, the anti-loosening structure comprises a first through hole and an anti-loosening part, the iron core is arranged in the first through hole, the first through hole penetrates through one side surface of the iron core facing the rod part and one side surface of the iron core facing away from the iron core, the anti-loosening part comprises a first through part and a cover, the first through part is connected to the rod part and penetrates through the first through hole, the cover is connected to the first through part and arranged on one side of the iron core facing away from the rod part, and the cover covers at least part of the periphery of the first through hole and is used for preventing the iron core from loosening from the rod part.

Description

Relay and push rod mechanism thereof

Technical Field

The utility model relates to an electronic control device technical field particularly, relates to a relay and push rod mechanism thereof.

Background

A relay is an electronic control device having a control system (also called an input loop) and a controlled system (also called an output loop), and is generally applied to an automatic control circuit. Relays are actually "reclosers" that use a smaller current to control a larger current. Therefore, the circuit plays the roles of automatic regulation, safety protection, circuit conversion and the like.

As shown in fig. 1 and 2, a push rod mechanism of a relay in the prior art includes a push rod 1000 and two iron cores 2000, the push rod 1000 is made of a plastic material, a through hole 1100 is formed on the push rod 1000, the iron cores 2000 are made of a metal material, and each iron core 2000 is provided with a convex column 2100. When the two iron cores 2000 are assembled with the push rod 1000, the convex column 2100 of each iron core 2000 extends into the through hole 1100, and the convex column 2100 is in interference fit with the through hole 1100.

However, since the push rod 1000 is made of a plastic material and the iron core 2000 is made of a metal material, the interference fit between the metal boss 2100 and the plastic through hole 1100 is not good, and the connection between the push rod 1000 and the iron core 2000 is not firm and is easily loosened. When the push rod 1000 is loosened from the iron core 2000, on one hand, the iron core 2000 is in contact with the inner wall surface of the wire frame, and the friction force between the iron core 2000 and the inner wall surface of the wire frame is increased; on the other hand, the contact surface between the core 2000 and the yoke plate varies, and the magnetic circuit portion of the relay is affected. In addition, when the permanent magnet is disposed on the side of the iron core 2000, the iron core 2000 is more easily separated from the push rod 1000 by the magnetic attraction of the permanent magnet.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a can improve relay and push rod mechanism that iron core and catch bar are connected the fastness to prevent that iron core and catch bar from taking place the pine to take off.

The push rod mechanism of the relay comprises a push rod, an iron core and an anti-loosening structure, wherein the push rod comprises a rod part and an installation part, and the installation part is arranged at one end of the rod part and is used for installing a movable reed of the relay; the iron core is connected with the rod part, a limiting structure is arranged between the iron core and the rod part, and the limiting structure is used for limiting the relative movement of the iron core and the rod part along the axial direction of the rod part; anti-loosening structure set up in the iron core with between the pole portion, anti-loosening structure includes first through-hole and anticreep spare, first through-hole sets up in the iron core, just first through-hole runs through the iron core orientation a side surface of pole portion and dorsad a side surface of iron core, anticreep spare includes first portion of running through and cap, first portion of running through connect in pole portion, and wear to locate first through-hole, the cap connect in first portion of running through, and set up in the iron core dorsad one side of pole portion, the cap covers the circumferential at least part of first through-hole is used for preventing the iron core with pole portion pine takes off.

According to some embodiments of the present invention, the rod portion is provided with a through hole corresponding to the position of the first through hole, and the first through portion is disposed through the first through hole and the through hole.

According to some embodiments of the invention, the anti-slip element is a rivet.

According to some embodiments of the present invention, the outer peripheral surface of the first penetrating portion abuts against the inner wall surface of the through hole to constitute the limit structure.

According to some embodiments of the present invention, the iron core is back to one side of the rod portion has a first heavy groove, the first through hole runs through a bottom of the first heavy groove, and the cover is accommodated in the first heavy groove.

According to some embodiments of the invention, the anti-slip member is of unitary construction with the rod portion.

According to some embodiments of the present invention, the cover is a hook, and the anti-slip member is engaged with the core.

According to some embodiments of the present invention, the limiting structure comprises:

the limiting bulge is arranged on one of the iron core and the rod part;

and the limiting groove is arranged on the other one of the iron core and the rod part, and the limiting bulge is inserted into the limiting groove.

According to some embodiments of the present invention, the inner wall surface of the first through hole and the joint of the iron core facing a side surface of the rod portion are provided with a first guide inclined surface, the cover portion has a second guide inclined surface, the second guide inclined surface is used for abutting against the first guide inclined surface in a slidable manner.

According to some embodiments of the utility model, the iron core with the catch bar is as an organic whole to be moulded plastics and is connected.

According to some embodiments of the present invention, the anti-loosening structure further includes a second through hole opened on the iron core, the second through hole penetrates through a side surface of the iron core facing the rod portion and a side surface facing away from the iron core;

the anti-falling part further comprises a second penetrating part, the second penetrating part is connected to the rod part and penetrates through the second through hole, and the cover part is connected to the first penetrating part and the second penetrating part.

According to some embodiments of the present invention, a side of the iron core facing away from the rod portion has a second sinking groove, and the first through hole and the second through hole are both communicated with the second sinking groove;

the cover part is arranged in the second sinking groove.

According to some embodiments of the invention, the cover portion faces away from a side surface of the rod portion and the iron core faces away from a side surface of the rod portion.

The utility model discloses the relay, including above-mentioned arbitrary push rod mechanism of relay.

According to some embodiments of the present invention, the relay further comprises a permanent magnet, one side of the iron core of the push rod mechanism facing away from the rod portion is provided with the permanent magnet.

One embodiment of the above utility model has at least the following advantages or beneficial effects:

the push rod mechanism provided by the embodiment of the utility model is provided with the anti-loosening structure between the rod part and the iron core, the first through part of the anti-loosening structure is connected with the rod part and penetrates through the first through hole of the iron core, and the cover part is connected with the first through part and covers at least part of the periphery of the first through hole, so that the cover part can prevent the iron core from loosening from the rod part, and on one hand, the iron core can be prevented from contacting with the inner wall surface of the wire frame to influence the motion of the push rod mechanism; on the other hand, the lapping surface of the iron core and the yoke iron plate can be ensured to be kept in an initial state, and the magnetic circuit part of the relay is prevented from being influenced; on the other hand, even if the permanent magnet is arranged on the side face of the iron core, the iron core is not easy to loosen from the push rod under the action of the magnetic attraction force of the permanent magnet.

Drawings

Fig. 1 shows an exploded view of a prior art pusher mechanism.

Fig. 2 shows a cross-sectional view of the assembled prior art pusher mechanism.

Fig. 3 is a plan view of a relay according to an embodiment of the present invention, in which the upper cover is omitted.

Fig. 4 showsbase:Sub>A cross-sectional view alongbase:Sub>A-base:Sub>A in fig. 3.

Fig. 5 shows a cross-sectional view along B-B in fig. 4.

Fig. 6 is a schematic view of a push rod mechanism according to a first embodiment of the present invention.

Fig. 7 shows a cross-sectional view along C-C in fig. 6.

Fig. 8 shows a partially enlarged view at X1 in fig. 7.

Fig. 9 shows a schematic view of the core of fig. 6.

Fig. 10 is a schematic view of a push rod mechanism according to a second embodiment of the present invention from one perspective.

Fig. 11 is a schematic view of a push rod mechanism according to a second embodiment of the present invention from another perspective.

Fig. 12 shows a cross-sectional view along D-D in fig. 10.

Fig. 13 shows a partially enlarged view at X2 in fig. 12.

Fig. 14 shows a schematic view of the push rod of fig. 10.

Fig. 15 is a schematic view of a push rod mechanism according to a third embodiment of the present invention.

Fig. 16 shows a cross-sectional view along E-E in fig. 15.

Fig. 17 shows a schematic view of the core of fig. 15.

Wherein the reference numerals are as follows:

10. base seat

20. Push rod mechanism

210. Push rod

211. Rod part

2111. Perforation

212. Mounting part

220. Iron core

221. First through hole

222. Second through hole

223. First sink

224. Second sink tank

225. First guide inclined plane

250. Limit structure

251. Spacing protrusion

252. Limiting groove

260. Anti-loosening structure

270. Anti-drop piece

271. The first through part

272. Cover part

272a, hook

2721. Second guide inclined plane

273. Second penetration part

30. Magnetic circuit mechanism

310. Yoke structure

311. Yoke iron plate

3111. Through hole

312. U-shaped yoke

320. Wire frame

321. Center hole

330. Coil

340. Permanent magnet

40. Contact assembly

410. Movable contact spring

411. Dynamic spring body

412. Movable contact

420. Static reed

421. Static spring body

422. Static contact

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus a detailed description thereof will be omitted.

As shown in fig. 3 to 5, fig. 3 isbase:Sub>A top view ofbase:Sub>A relay according to an embodiment of the present invention, in which an upper cover is omitted, fig. 4 isbase:Sub>A cross-sectional view taken alongbase:Sub>A-base:Sub>A in fig. 3, and fig. 5 isbase:Sub>A cross-sectional view taken along B-B in fig. 4. The relay of the embodiment of the utility model comprises a base 10, a push rod mechanism 20, a magnetic circuit mechanism 30 and a contact assembly 40. The push rod mechanism 20, the magnetic circuit mechanism 30 and the contact assembly 40 are disposed on the base 10, and the magnetic circuit mechanism 30 controls contact or separation of the contact assembly 40 through the push rod mechanism 20.

It will be understood that the terms "comprises" and "comprising," and any variations thereof, in the embodiments of the present invention, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or may alternatively include other steps or elements inherent to such process, method, article, or apparatus.

The magnetic circuit mechanism 30 includes a yoke structure 310, a bobbin 320, and a coil 330. The yoke structure 310 forms a chamber, and the bobbin 320 and the coil 330 are disposed within the chamber of the yoke structure 310. The coil 330 is wound around the periphery of the bobbin 320 to form a magnetic control loop. The wire frame 320 is provided with a central hole 321 in the contact separation direction of the contact assembly 40, and the central hole 321 is used for one end of the push rod mechanism 20 to penetrate through.

As an example, the yoke structure 310 includes a yoke plate 311 and a U-shaped yoke 312, and the yoke plate 311 is connected to the U-shaped yoke 312 to form a ring yoke. The yoke plate 311 has a through hole 3111, and the through hole 3111 is used for the push rod mechanism 20 to pass through.

Of course, in other embodiments, the yoke structure 310 may further include a cylindrical yoke and yoke plate 311, and the cylindrical yoke and yoke plate 311 are connected to form a ring yoke.

The magnetic circuit mechanism 30 further includes two permanent magnets 340, and the two permanent magnets 340 are disposed on the bobbin 320 and located at two sides of the moving direction of the push rod mechanism 20. The yoke structure 310 is arranged outside the bobbin 320 and the permanent magnet 340 to form a magnetic circuit structure for magnetic holding.

Of course, in other embodiments, it is also possible to not include the permanent magnet 340, but a magnetic circuit structure for magnetic retention is not formed, so that the electricity consumption cost is high, the service life is short, and the comprehensive performance stability is poor.

Referring to fig. 3 to fig. 5, the contact assembly 40 includes a movable spring 410 and a stationary spring 420, the stationary spring 420 is fixedly installed on the base 10, and the movable spring 410 is installed on the push rod mechanism 20 and follows the push rod mechanism 20.

In the present embodiment, the contact assemblies 40 are two sets, and the two sets of contact assemblies 40 are arranged along the moving direction of the push rod mechanism 20.

Of course, in other embodiments, the contact assemblies 40 may be in groups or other numbers.

The movable contact is provided at both ends of the movable spring 410 in the length direction, and the movable contact may protrude from other portions of the movable spring 410 or be flush with the other portions. The portion of the stationary spring plate 420 in contact with the movable spring plate 410 serves as a stationary contact, and the stationary contact may protrude from other portions of the stationary spring plate 420 or may be flush with other portions.

As an example, the movable spring 410 includes a movable spring body 411 and a movable contact 412, the movable contact 412 and the movable spring body 411 are of a separate structure, and the movable contact 412 and the movable spring body 411 may be connected by riveting, but not limited thereto. Static reed 420 includes static reed body 421 and static contact 422, and static contact 422 and static reed body 421 are components of a whole that can function independently structure, and static contact 422 and static reed body 421 can adopt the riveting mode to be connected, but not so as the limit.

Of course, in another embodiment, the movable contact 412 and the movable spring body 411 may be an integral structure, and the fixed contact 422 and the fixed spring body 421 are an integral structure.

The pusher mechanism 20 is movable relative to the base 10. The push rod mechanism 20 includes a push rod 210 and an iron core 220, and the iron core 220 is connected to the push rod 210. The iron core 220 can move in the contact or separation direction under the action of the magnetic control loop formed by the coil 330, and then the push rod 210 is driven to move, so as to control the contact or separation of the contact assembly 40. The movable spring plate 410 of the contact assembly 40 is disposed on the push rod 210.

It is understood that the number of the iron cores 220 of the present invention may be one, two or more. In the embodiment of the present invention, the number of the iron cores 220 is two, and the two iron cores 220 are respectively disposed on two opposite sides of the pushing rod 210. The two separate cores 220 are more convenient to assemble with the push rod 210 and are less costly.

As shown in fig. 6 to 9, fig. 6 is a schematic view of a push rod mechanism 20 according to a first embodiment of the present invention. Fig. 7 shows a cross-sectional view along C-C in fig. 6. Fig. 8 shows a partially enlarged view at X1 in fig. 7. Fig. 9 is a schematic view of the core 220 of fig. 6. The push rod mechanism 20 includes a push rod 210, an iron core 220, and an anti-release structure 260.

The push rod 210 may be made of a plastic material, the push rod 210 includes a rod portion 211 and a mounting portion 212, the mounting portion 212 is disposed at one end of the rod portion 211, and the mounting portion 212 is used for mounting the movable spring 410 of the relay. The lever portion 211 is inserted through the through hole 3111 of the yoke plate 311. The iron core 220 is connected to the rod portion 211, a limiting structure 250 is arranged between the iron core 220 and the rod portion 211, and the limiting structure 250 is used for limiting the relative movement of the iron core 220 and the rod portion 211 along the axial direction of the rod portion 211.

The anti-loose structure 260 is disposed between the iron core 220 and the rod portion 211, the anti-loose structure 260 includes a first through hole 221 and an anti-loose member 270, the first through hole 221 is disposed in the iron core 220, and the first through hole 221 penetrates through one side surface of the iron core 220 facing the rod portion 211 and one side surface facing away from the iron core 220, the anti-loose member 270 includes a first penetrating portion 271 and a cover 272, the first penetrating portion 271 is connected to the rod portion 211 and penetrates through the first through hole 221, the cover 272 is connected to the first penetrating portion 271 and is disposed on one side of the iron core 220 facing away from the rod portion 211, the cover 272 covers at least a portion of a periphery of the first through hole 221, and is configured to prevent the iron core 220 from being loose from the rod portion 211.

The push rod mechanism 20 of the embodiment of the present invention is provided with the anti-loose structure 260 between the rod portion 211 and the iron core 220, the first through portion 271 of the anti-loose structure 260 is connected to the rod portion 211 and penetrates through the first through hole 221 of the iron core 220, the cover 272 is connected to the first through portion 271 and covers at least part of the circumference of the first through hole 221, so that the cover 272 can prevent the iron core 220 from loosening from the rod portion 211, and on one hand, the iron core 220 can be prevented from contacting the inner wall surface of the wire frame 320 to affect the movement of the push rod mechanism 20; on the other hand, the contact surface between the iron core 220 and the yoke plate 311 can be kept in the initial state, and the magnetic circuit part of the relay is prevented from being influenced; on the other hand, even if the permanent magnet is disposed on the side surface of the iron core 220, the iron core 220 is not easily separated from the push rod 210 by the magnetic attraction of the permanent magnet.

With reference to fig. 6 to 9, the shaft 211 is provided with a through hole 2111 corresponding to the position of the first through hole 221, and the first through portion 271 is disposed through the first through hole 221 and the through hole 2111.

As an example, the release preventing member 270 is a rivet. Through being equipped with perforation 2111 on catch bar 210, be equipped with first through-hole 221 on iron core 220, perforation 2111 corresponds with the position of first through-hole 221 for the rivet can wear to locate perforation 2111 and first through-hole 221, and then realizes iron core 220 and catch bar 210's riveting, ensures iron core 220 and catch bar 210's joint strength, avoids both to take place to loosen.

It is understood that, when the plunger 220 and the push rod 210 are riveted by a rivet, the body of the rivet can be regarded as the first penetration portion 271 of the stopper 270, and the cap can be regarded as the cover 272 of the stopper 270.

In addition, when the number of the cores 220 is two, the two cores 220 are respectively disposed at opposite sides of the rod portion 211, the rivet sequentially passes through the first through hole 221 of each core 220 and the through hole 2111 of the push rod 210, and the nut and the bottom flange of the rivet can be respectively regarded as two cover portions 272 for respectively preventing the two cores 220 from being released from the rod portion 211.

Referring to fig. 8 and 9, the side of the iron core 220 facing away from the rod portion 211 has a first sinking groove 223, the first through hole 221 penetrates through the bottom of the first sinking groove 223, and the cover 272 is accommodated in the first sinking groove 223.

The first sinking groove 223 is formed on the side of the iron core 220 opposite to the rod portion 211, so that the cover 272 can be accommodated in the first sinking groove 223, and thus the anti-falling part 270 does not protrude out of the surface of the iron core 220 opposite to the rod portion 211, so as to reduce the gap between the iron core 220 and the permanent magnet 340, and further reduce the magnetic resistance of the magnetic circuit.

The outer peripheral surface of the first penetration portion 271 abuts against the inner wall surface of the penetration hole 2111 to constitute the stopper structure 250.

In this embodiment, the first penetrating portion 271 not only plays a role of preventing loosening, but also plays a role of limiting. Specifically, the outer diameter of the first penetration portion 271 is substantially equal to the diameter of the through hole 2111, so that the first penetration portion 271 can be inserted into the through hole 2111 and can abut against the inner wall surface of the through hole 2111, thereby functioning as a stopper. When the iron core 220 is driven by the magnetic circuit of the coil to move, the first through portion 271 can drive the push rod 210 to follow.

It is understood that the shape of the first through hole 221 and the through hole 2111 may have various embodiments, for example, may be a circular hole, a rectangular hole, an elliptical hole, etc.

The number of the anti-loose structures 260 between the iron core 220 and the rod 211 may be one, or two or more. When the number of the anti-loosening structures 260 is two or more, each anti-loosening structure 260 can not only prevent the iron core 220 from loosening from the push rod 210, but also prevent the iron core 220 from rotating relative to the push rod 210 due to the two or more anti-loosening structures 260. Two or more anti-release structures 260 may be arranged along the axial direction of the shaft 211, but other methods may be adopted.

As shown in fig. 10 to 14, fig. 10 is a schematic view of a push rod mechanism 20 according to a second embodiment of the present invention from one perspective. Fig. 11 shows a schematic view of a push rod mechanism 20 according to a second embodiment of the present invention from another perspective. Fig. 12 shows a cross-sectional view along D-D in fig. 10. Fig. 13 shows a partially enlarged view at X2 in fig. 12. Fig. 14 shows a schematic view of the push rod 210 of fig. 10. The parts of the push rod mechanism 20 of the second embodiment that are the same as those of the push rod mechanism 20 of the first embodiment will not be described again, and the differences are as follows: the anti-slip member 270 and the rod 211 are of an integral structure, and the iron core 220 and the push rod 210 are clamped by the anti-slip member 270.

Specifically, the cover 272 is a hook 272a, the hook 272a is connected to the first penetrating portion 271, and the first penetrating portion 271 and the rod portion 211 of the push rod 210 are integrated. When the iron core 220 and the push rod 210 are installed, the anti-slip member 270 aligns with the first through hole 221 of the iron core 220, so that the first through hole 271 passes through the first through hole 221, and the hook 272a is engaged with a side of the iron core 220 opposite to the rod 211.

It can be understood that, since the lid 272 is disposed at one end of the first through-hole 271, and the lid 272 needs to pass through the first through-hole 221 of the core 220 and be located at a side of the core 220 opposite to the rod 211, the aperture size of the first through-hole 221 needs to be larger than the outer diameter size of the first through-hole 271, that is, a gap exists between the outer circumferential surface of the first through-hole 271 and the inner wall surface of the first through-hole 221.

In order that the iron core 220 and the push rod 210 do not move relative to each other along the axis of the rod 211, a limiting structure 250 is disposed between the iron core 220 and the push rod 210. The limiting structure 250 comprises a limiting protrusion 251 and a limiting groove 252, the limiting protrusion 251 is arranged on one of the iron core 220 and the rod part 211, the limiting groove 252 is arranged on the other of the iron core 220 and the rod part 211, and the limiting protrusion 251 is used for being inserted into the limiting groove 252 to achieve the limiting effect.

In the present embodiment, the limiting protrusion 251 is convexly disposed on a surface of the rod portion 211 facing the side of the iron core 220, and the limiting groove 252 is disposed on a side of the iron core 220 facing the rod portion 211.

Of course, the position-limiting protrusion 251 may be disposed on the iron core 220, and the position-limiting groove 252 may be disposed on the rod portion 211.

As shown in fig. 13, a first guiding inclined surface 225 is disposed at a junction between an inner wall surface of the first through hole 221 and a side surface of the iron core 220 facing the rod portion 211, the lid 272 has a second guiding inclined surface 2721, and the second guiding inclined surface 2721 is adapted to slidably abut against the first guiding inclined surface 225. When the anti-slip member 270 is inserted into the first through hole 221 of the core 220, the first guiding slope 225 slidably abuts against the second guiding slope 2721, so that the anti-slip member 270 is inserted into the first through hole 221.

As shown in fig. 15 and 16, fig. 15 is a schematic view of a push rod mechanism 20 according to a third embodiment of the present invention. Fig. 16 shows a cross-sectional view along E-E in fig. 15. Fig. 17 shows a schematic view of the core 220 of fig. 15. The parts of the pusher mechanism 20 of the third embodiment that are the same as those of the pusher mechanism 20 of the above-described embodiment will not be described again, and the differences are: the iron core 220 is integrally connected with the push rod 210 in an injection molding manner.

Specifically, the anti-loosening structure 260 includes a first through hole 221, a second through hole 222, and an anti-loosening member 270, wherein the first through hole 221 and the second through hole 222 are both opened in the core 220, and the first through hole 221 and the second through hole 222 both penetrate through a side surface of the core 220 facing the rod portion 211 and a side surface facing away from the core 220.

The anti-slip member 270 includes a first through portion 271, a second through portion 273, and a cover 272, the first through portion 271 is connected to the lever portion 211 and penetrates through the first through hole 221, and the second through portion 273 is connected to the lever portion 211 and penetrates through the second through hole 222. The cover 272 is connected to the first penetrating portion 271 and the second penetrating portion 273.

In the present embodiment, the cover 272 may be considered as bridging the first penetrating portion 271 and the second penetrating portion 273, and both ends of the cover 272 are connected to the first penetrating portion 271 and the second penetrating portion 273, respectively, so that the first penetrating portion 271, the cover 272, and the second penetrating portion 273 form a substantially U-shape.

As shown in fig. 15 and 16, the side of the iron core 220 facing away from the rod portion 211 has a second sinking groove 224, the first through hole 221 and the second through hole 222 are both communicated with the second sinking groove 224, and the cover 272 is disposed in the second sinking groove 224. The surface of the cover 272 on the side facing away from the shaft 211 is flush with the surface of the core 220 on the side facing away from the shaft 211.

Since the cover 272 is disposed in the second sinking groove 224, and a surface of the cover 272 facing away from the rod 211 is flush with a surface of the iron core 220 facing away from the rod 211, a gap between the iron core 220 and the permanent magnet 340 can be reduced, and a magnetic resistance of the magnetic circuit is further reduced.

It is understood that the various embodiments/implementations provided by the present invention can be combined without contradiction, and are not illustrated herein.

In the embodiments of the present invention, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the embodiments of the present invention and simplification of the description, but do not indicate or imply that the device or unit indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the embodiments of the present invention.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the embodiments of the present invention should be included in the scope of the embodiments of the present invention.

Claims (15)

1. A push rod mechanism of a relay is characterized by comprising:

the push rod comprises a rod part and a mounting part, and the mounting part is arranged at one end of the rod part and is used for mounting a movable reed of the relay;

the iron core is connected to the rod part, a limiting structure is arranged between the iron core and the rod part, and the limiting structure is used for limiting the relative movement of the iron core and the rod part along the axial direction of the rod part; and

anti-loosening structure, set up in the iron core with between the pole portion, anti-loosening structure includes first through-hole and anticreep spare, first through-hole sets up in the iron core, just first through-hole runs through the iron core orientation a side surface of pole portion and dorsad a side surface of iron core, anticreep spare includes first portion of running through and cap, first portion of running through connect in pole portion, and wear to locate first through-hole, the cap connect in first portion of running through, and set up in the iron core dorsad one side of pole portion, the cap covers the circumferential at least part of first through-hole is used for preventing the iron core with pole portion pine takes off.

2. The push rod mechanism of the relay according to claim 1, wherein the rod portion is provided with a through hole corresponding to the first through hole, and the first through portion is inserted into the first through hole and the through hole.

3. The relay pusher mechanism of claim 2, wherein the release preventing member is a rivet.

4. The relay pusher mechanism according to claim 2, wherein an outer peripheral surface of the first penetrating portion abuts against an inner wall surface of the penetrating hole to constitute the stopper structure.

5. The push rod mechanism of a relay according to claim 2, wherein a side of the iron core facing away from the rod portion has a first sinking groove, the first through hole penetrates through a groove bottom of the first sinking groove, and the cover portion is received in the first sinking groove.

6. The push-rod mechanism of a relay according to claim 1, wherein the release preventing member is of an integral structure with the rod portion.

7. The push rod mechanism of the relay according to claim 6, wherein the cover is a hook, and the anti-release member is engaged with the core.

8. The push rod mechanism of a relay according to claim 7, wherein the limit structure comprises:

the limiting bulge is arranged on one of the iron core and the rod part;

and the limiting groove is arranged on the other one of the iron core and the rod part, and the limiting bulge is inserted into the limiting groove.

9. The relay pusher mechanism according to claim 7, wherein a junction of an inner wall surface of the first through hole and a side surface of the iron core facing the rod portion is provided with a first guide slope, and the cap portion has a second guide slope for slidably abutting against the first guide slope.

10. The push rod mechanism of the relay according to claim 6, wherein the iron core is integrally connected with the push rod by injection molding.

11. The push rod mechanism of the relay according to claim 10, wherein the anti-loose structure further comprises a second through hole opened on the iron core, the second through hole penetrates through a side surface of the iron core facing the rod portion and a side surface facing away from the iron core;

the anti-falling part further comprises a second penetrating part, the second penetrating part is connected to the rod part and penetrates through the second through hole, and the cover part is connected to the first penetrating part and the second penetrating part.

12. The push rod mechanism of the relay according to claim 11, wherein a side of the iron core facing away from the rod portion has a second sinking groove, and the first through hole and the second through hole are both communicated with the second sinking groove;

the cover part is arranged in the second sinking groove.

13. The push-rod mechanism of a relay according to claim 12, wherein a surface of a side of the cover portion facing away from the lever portion is flush with a surface of a side of the core facing away from the lever portion.

14. A relay, characterized by comprising a tappet mechanism of the relay according to any one of claims 1 to 13.

15. The relay according to claim 14, further comprising a permanent magnet, wherein the permanent magnet is disposed on a side of the iron core of the push rod mechanism facing away from the rod portion.

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