CN210378904U - Yoke for preventing armature from separating - Google Patents

Abstract

The utility model discloses a prevent yoke that armature breaks away from, prevent yoke that armature breaks away from the yoke is buckled into the L form to form a coil fixed part and an armature fixed part, the armature fixed part certainly the integrative extension of coil fixed part to form a grafting end, the armature fixed part is being close to insert the end the yoke forms a first spacing portion and the spacing portion of a second, wherein first spacing portion forms the bayonet socket, the spacing portion of second form a commentaries on classics mouth with the grafting end, wherein the commentaries on classics mouth by with the bayonet socket intercommunication, the spacing portion of second forms a spacing arch, armature is assembled in behind the bayonet socket, armature the pivot end by spacing in swing in the bayonet socket.

Description

Yoke for preventing armature from separating

Technical Field

The utility model relates to a relay especially relates to a prevent yoke that armature breaks away from.

Background

Relays, which are electronic control devices, are widely used in automatic control circuits. In essence, a relay is an "automatic switch" that uses a smaller current to control a larger current. Therefore, the circuit plays the roles of automatic regulation, safety protection, circuit conversion and the like.

The conventional relay includes a housing, a base, a movable spring assembly, a stationary spring assembly, and a linkage assembly, wherein the movable spring assembly, the stationary spring assembly, and the linkage assembly are respectively installed between the housing and the base. The movable spring assembly forms a movable contact. The static spring assembly forms a static contact. The movable contact of the movable spring assembly is switched between a state of being conducted with the stationary contact and another state of being de-energized from the stationary contact by the linkage assembly.

The linkage assembly described in the prior art includes a coil assembly, an armature, a yoke and a pivot member. The movable contact is fixed to the armature, wherein the armature is pivotably connected to the yoke by the pivot member. The pivot is typically embodied as a spring. When the coil assembly is not electrified, the movable contact arranged on the armature is not electrically conducted with the fixed contact, so that the movable contact of the movable spring assembly is in a power-off state. When the coil assembly is electrified, the armature is attracted by the magnetic field generated by the coil assembly, so that the movable contact of the movable spring assembly is driven to move towards the fixed contact of the fixed spring assembly, and the movable contact is tightly attached to the fixed contact, so that the movable contact is in a state of being conducted with the fixed contact.

Since the armature needs to swing through the pivot member when being attracted by the coil assembly, a certain swing space is needed at the end where the armature is connected with the pivot member. Due to the existence of the swing space, when the relay vibrates, the end of the relay connected with the armature and the pivot part can not swing continuously because of being stranded on the yoke, at this time, the movable contact fixed on the armature can not be switched between the state of being conducted with the fixed contact and the other state of being disconnected with the fixed contact, and the relay can not play the role of a control circuit. For example, when the relay resonates or is mechanically stressed due to an impact. In addition, when the end of the armature connected to the pivot is placed on the yoke and the movable contact and the stationary contact are always in a conductive state, some other electronic components in a common circuit with the relay may be damaged.

Disclosure of Invention

An object of the utility model is to provide a prevent yoke that armature breaks away from, wherein prevent yoke that armature breaks away from and be used for a relay, with can prevent armature among the relay breaks away from.

An object of the utility model is to provide a prevent yoke that armature breaks away from, wherein prevent yoke that armature breaks away from can be used for the relay, wherein the relay can make armature in the relay swings steadily, thereby makes the relay remains stable.

Another object of the present invention is to provide a yoke for preventing the separation of the armature, wherein the supporting point of the armature in the swing process is increased, so that the armature can swing stably.

Another object of the present invention is to provide a yoke for preventing the detachment of the armature, wherein the armature in the yoke for preventing the detachment of the armature is held at a swing position without being rested on the yoke.

Another object of the present invention is to provide a yoke for preventing the separation of the armature, wherein the yoke for preventing the separation of the armature is low in manufacturing cost.

In order to realize the utility model discloses above at least one purpose, the utility model provides a prevent yoke that armature breaks away from, wherein prevent yoke that armature breaks away from the yoke is buckled into the L form to form a coil fixed part and an armature fixed part, the armature fixed part from the integrative extension of coil fixed part, and form a grafting end, the armature fixed part is being close to insert the end the yoke forms a first spacing portion and the spacing portion of second, wherein first spacing portion forms the bayonet socket, the spacing portion of second form a commentaries on classics mouth with the grafting end, wherein the commentaries on classics mouth by with the bayonet socket intercommunication, the spacing portion of second forms a spacing arch, armature assembled in behind the bayonet socket, armature the pivot end by spacing in swing in the bayonet socket.

According to the utility model discloses an embodiment, spacing arch is set up in forming the commentaries on classics mouth the lower extreme of the spacing portion of second.

According to the utility model discloses an embodiment, spacing arch is set up in forming the commentaries on classics mouth the upper end of the spacing portion of second.

According to the utility model discloses an embodiment, spacing arch is set up certainly spacing portion of second extends the formation integratively.

According to the utility model discloses an embodiment, spacing protruding top tip forms a radius angle.

According to the utility model discloses an embodiment, spacing protruding orientation bayonet socket one side forms another fillet.

Further objects and advantages of the invention will be fully apparent from the ensuing description and drawings.

These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description, the accompanying drawings and the appended claims.

Drawings

Fig. 1 shows a perspective view of a relay according to the present invention.

Fig. 2 shows a partial structure exploded view of the relay according to the present invention.

Fig. 3 shows an exploded view of the relay according to the invention in another state.

Fig. 4 shows a perspective view of a housing of the relay according to the present invention.

Fig. 5 is a perspective view of a yoke of the relay according to the present invention.

Fig. 6 shows a schematic diagram of a part of the structure of a relay when an electrified coil is not electrified.

Fig. 7 shows a schematic diagram of a partial structure of a relay when an energizing coil is energized.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purpose of limitation.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

Referring to fig. 1 to 7, an armature detachment prevention yoke according to a preferred embodiment of the present invention will be described in detail below, wherein the armature detachment prevention yoke can be applied to a relay, wherein the relay 100 can be used for automatic adjustment of a circuit, safety protection, circuit switching, and the like.

The relay 100 includes a housing 10, a movable spring assembly 20, a stationary spring assembly 30, and a linkage assembly 40. The housing 10 forms an installation space 101, wherein the movable spring assembly 20, the stationary spring assembly 30, and the linkage assembly 40 are respectively disposed in the installation space 101.

Preferably, the housing 10 includes a base plate 11 and a housing 12, wherein the movable spring assembly 20, the movable spring assembly 30 and the linkage assembly 40 are respectively mounted to the base plate 11. The housing 12 forms the installation space 101. The housing 12 is relatively hermetically mounted to the bottom plate 11 so that the mounting space 101 is sealed by the bottom plate 11.

The base plate 11 is provided with a plurality of insertion holes 1101 through which pins formed by the movable spring assembly 20 and/or the stationary spring assembly 30 extend from one side of the base plate 11 to the other side of the base plate 11.

The movable spring assembly 20 includes a movable spring plate 21, a movable contact pack 22 inserted on both sides of the movable spring plate 21, at least one pair of movable spring pins 23, and a braided wire 24. It should be noted that, since the movable contact pack 22 is disposed to be inserted into the movable contact spring 21, the movable contact pack 22 forms a contact point on both sides of the movable contact spring 21. The movable spring pin 23 is mounted on the base plate 11 and extends from one side of the base plate 11 to the other side of the base plate 11 after passing through the insertion hole 1101 on the base plate 11.

The stationary spring assembly 30 includes a pair of stationary spring pins 31 and two stationary contact packs 32 provided on each of the stationary spring pins 31. The dead spring pin 31 is disposed on the bottom plate 11 and penetrates at least one of the insertion holes 1101 on the bottom plate 11 from one side of the bottom plate 11. The stationary contact pack 32 and the movable contact pack 22 are disposed at the same level.

The linkage assembly 40 includes a coil assembly 41, an armature 42, a yoke 43, and a tension spring 44. The yoke 43 is bent into an L-shape to form a coil fixing portion 431 and an armature fixing portion 432. The armature fixing portion 432 integrally extends from the coil fixing portion 431 and forms a plug end 4321. The armature fixing portion 432 forms a bayonet 43210 at the inserting end 4321. The armature 42 has a pivot end 421 and a swing end 422, and the pivot end 421 of the armature 42 is inserted into the bayonet 43210. A mounting portion 423 is further formed in the middle of the pivot end 421 of the armature 42 for fixing one end of the tension spring 44. After the movable spring 21 is installed on the armature 42, the movable contact 22 on the movable spring 21 is relatively fixed near the swinging end 422 so as to swing along with the swinging of the swinging end 422 of the armature 42.

The yoke 43 and the movable spring 21 are electrically conducted through the braided wire 24. It should be noted that, in the present invention, the yoke 43 integrally extends to form the movable spring pin 23.

A fixed end 4311 is formed in the middle of the coil fixing portion 431 connected to the armature fixing portion 432, and is used for mounting the other end of the tension spring 44. The yoke 43 is fixed to the base plate 11. In this way, the pivot end 421 of the armature 42 can be continuously pulled by the tension spring 44, so that the armature 42 is balanced.

In addition, the coil assembly 41 includes an energizing coil 411, a fixing base 412 and a core 413, wherein the fixing base 412 is fixed to the base plate 11. The mounting block 412 includes a coil bobbin 4121, a yoke mounting block 4122 and a component mounting block 4123. The yoke mounting seat 4122 and the assembly mounting seat 4123 are formed at both ends of the coil bobbin 4121, respectively. The energizing coil 411 is wound around the coil winding shaft 4121, wherein the iron core 413 is coaxially disposed on the coil winding shaft 4121, and a magnetic attraction end 4131 is formed through the component mounting seat 4123 after the energizing coil 411 is inserted. The coil fixing portion 431 of the yoke 43 is attached to the yoke attachment seat 4122. The movable spring 21 and the stationary spring pin 31 are fixed to the unit mount 4123 of the holder 412, respectively.

The swinging end 422 of the armature 42 is coupled to the magnetic attraction end 4131 formed by the core 413 of the coil assembly 41. When the energizing coil 411 is energized, the attractive force of the magnetic attraction end 4131 is greater than the pulling force applied to the pivot end 421 of the armature 42, so that the swing end 422 of the armature 42 swings.

The movable spring 21 is fixed to the armature 42, and when the energizing coil 411 is not energized, one of the contacts formed on the movable spring 21 on the movable contact pack 22 side is electrically connected to one of the stationary contact packs 32 on one of the stationary spring pins 31. After the energizing coil 411 is energized, one of the contacts formed on the other side of the movable contact pack 22 on the movable spring piece 21 swings due to the attraction of the magnetic attraction end 4131 of the iron core 413, and then is conducted with the fixed contact pack 32 on the other fixed spring pin 31.

In this manner, the moving spring assembly 20 is capable of forming two distinct conductive circuits.

Further, in the present invention, the insertion end 4321 of the armature fixing portion 432 forms a first limiting portion 4322 and a second limiting portion 4323, wherein the first limiting portion 4322 forms the bayonet 43210. The second position-limiting portion 4323 forms a shaft rotation opening 43230 and the insertion end 4321, wherein the shaft rotation opening 43230 is communicated with the bayonet 43210. It should be noted that the size of the pivot opening 43230 formed by the second limiting portion 4323 is smaller than that of the bayonet 43210, so that the pivot end 421 of the armature 42 can be fixed to be engaged with the bayonet 43210. In other words, since the dimension of the shaft rotation opening 43230 formed by the second limit portion 4323 is smaller than that of the bayonet 43210, a step is formed between the first limit portion 4322 and the second limit portion 4323, thereby facilitating the assembly between the armature 42 and the yoke 43.

Further, the second position-limiting portion 4323 forms a position-limiting protrusion 43231. After the armature 42 is assembled to the bayonet 43210, the pivot end 421 of the armature 42 is restricted from swinging in the bayonet 43210, so that the pivot end 421 of the armature 42 cannot disengage from the bayonet 43210 and can rest on the second restricting portion 4323 to move to the pivot 43230.

In other words, in the present invention, by providing the limit projection 43231 at the second limit portion 4323, the pivot end 421 of the armature 42 can be stably held in the bayonet 43210. Even when the relay 100 is mechanically stressed or resonates, the pivot end 421 of the armature 42 does not run flat against the second limit portion 4323. In other words, when the energizing coil 411 is switched between the two states of energizing and deenergizing, the armature 43 can be stably reset, so that the movable contact pack 22 on the movable spring 21 on the armature 43 can be stably switched between the state of being in electrical conduction with the stationary contact pack 32 and the other state of being deenergized with the stationary contact pack 32.

In addition, the limit protrusion 43231 is further capable of providing a rotation supporting point for the armature 42 when the armature 42 swings, that is, when the armature 42 swings, the pivot end 421 of the armature 42 will rotate with a position where the tension spring 44 applies a tension force to the armature 42 and a position where the limit protrusion 43231 is located as the supporting point, so as to limit the excessive displacement generated when the armature 42 rotates and resonates.

It should be noted that the end of the limiting protrusion 43231 forms a chamfer, and preferably, the end of the limiting protrusion 43231 forms a chamfer, so as to prevent the armature 42 from being scratched to generate conductive metal chips during the swinging process of the armature 42, and further prevent a short circuit from occurring due to the generation of the conductive chips.

It is more worth mentioning that another rounded corner is formed on the side of the limiting protrusion 43231 facing the bayonet 43210.

Referring to fig. 5, preferably, the limit protrusion 43231 is disposed at a lower end of the second limit portion 4323 forming the shaft rotation port 43230, and at this time, the limit protrusion 43231 integrally extends from the second limit portion 4323 toward a direction away from the bottom plate 11. In another embodiment of the present invention, the limit protrusion 43231 is disposed at an upper end of the second limit portion 4323 forming the shaft rotation opening 43230, at this time, the limit protrusion 43231 is integrally extended from the second limit portion 4323 toward the bottom plate 11, so that the size of the shaft rotation opening 43230 formed by the second limit portion 4323 is smaller than that of the bayonet 43210.

Referring to fig. 4, further, a limit projection 50 is disposed on the housing 12, wherein the limit projection 50 is integrally formed to extend toward the bottom plate 11 from a side opposite to the bottom plate 11. When the housing 12 is relatively fixed to the base plate 11, one side of the armature 42 is defined between the limit projection 50 and the component mounting seat 4123.

Particularly, when the limit protrusion 43231 is disposed on the second limit portion 4323 forming the lower end of the shaft rotation port 43230, three portions of the outer side surface of the armature 42 are respectively limited, so that the pivot end 421 of the armature 42 is not easily slid out of the bayonet 43210, and the armature 42 can be stably reset after swinging.

As will be understood by those skilled in the art, since the armature 42 can be stably reset, the movable spring 21 fixed to the armature 42 can also be stably switched between a state of being conducted with one of the stationary contact packs 32 and a state of being conducted with the other stationary contact pack 32.

It will be understood by those skilled in the art that the embodiments of the present invention as described above and shown in the drawings are given by way of example only and are not limiting of the present invention. The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the embodiments without departing from the principles, embodiments of the present invention may have any deformation or modification.

Claims (6)

1. The yoke for preventing the armature from being separated is characterized in that the yoke for preventing the armature from being separated is bent into an L shape and forms a coil fixing part and an armature fixing part, the armature fixing part integrally extends from the coil fixing part and forms a plug-in end, the armature fixing part forms a first limiting part and a second limiting part on the yoke close to the plug-in end, the first limiting part forms a bayonet, the second limiting part forms a shaft rotating opening and the plug-in end, the armature is provided with a pivoting end, the shaft rotating opening is communicated with the bayonet, the second limiting part forms a limiting bulge, and after the armature is assembled on the bayonet, the pivoting end of the armature is limited to swing in the bayonet.

2. The yoke for preventing disengagement of an armature according to claim 1, wherein the stopper projection is provided at a lower end of the second stopper portion forming the shaft rotation opening.

3. The yoke for preventing disengagement of an armature according to claim 1, wherein the stopper projection is provided at an upper end of the second stopper portion forming the shaft rotation opening.

4. The yoke for preventing disengagement of an armature according to claim 2 or 3, wherein the stopper projection is provided to be integrally extended from the second stopper portion.

5. The yoke for preventing disengagement of an armature according to claim 4, wherein the top end of the stopper projection forms a rounded corner.

6. The yoke for preventing disengagement of an armature according to claim 4, wherein the stopper projection is formed with another rounded portion on a side facing the bayonet.

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