CN211700151U

CN211700151U - Electromagnetic relay

Info

Publication number: CN211700151U
Application number: CN202020558885.8U
Authority: CN
Inventors: 陈永兵; 谭忠华; 刘金枪
Original assignee: Zhangzhou Hongfa Electron Wave Music Co ltd
Current assignee: Zhangzhou Hongfa Electron Wave Music Co ltd
Priority date: 2020-04-15
Filing date: 2020-04-15
Publication date: 2020-10-16
Anticipated expiration: 2030-04-15

Abstract

The utility model discloses an electromagnetic relay, which comprises a base, a magnetic circuit part, a contact part and a pushing card, wherein the magnetic circuit part comprises a winding frame, an enameled wire, an iron core and an armature, the winding frame is arranged on the base, the iron core is arranged in the winding frame, the enameled wire is wound outside the winding frame, and the contact part comprises a movable spring and a static spring which are arranged on the base; the armature iron can be asway erected on the base and is connected with the movable spring through the pushing clamp; an insulated elastic limiting part is arranged on the base and is positioned on one side of the armature far away from the iron core, and the armature is prevented from being separated from the base. The utility model discloses make armature packing into the process and can not produce plastic bits, iron fillings, guarantee the quality of product to can cancel the pressure spring, thereby reduce cost and increase the creepage distance between relay input and the output.

Description

Electromagnetic relay

Technical Field

The utility model relates to an electromagnetic relay.

Background

The utility model provides an electromagnetic relay of prior art, its magnetic circuit part includes the bobbin, the enameled wire, the iron core, armature, the pressure spring, the bobbin sets up on the base of relay, the iron core is adorned in the bobbin, the enameled wire twines outside the bobbin, armature one end base of packing into is equipped with two spacing platforms on the base, these two spacing platforms are located the both sides at armature width direction place to with armature interference fit, simultaneously, the base is equipped with the pressure spring in armature one side, this pressure spring props armature. In order to ensure that the armature does not fall off from the base, the interference magnitude of the limiting table is generally large. And because the spacing platform of base does not have elasticity, consequently at armature assembling process, extrude the base plastics bits or wipe iron core utmost point face out iron fillings easily to influence the quality of product. In addition, because armature adopts the pressure spring to prop, not only increased the spare part cost of pressure spring, still because the pressure spring is the metal material, can reduce the creepage distance of the input of relay and output.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the technical problem that prior art exists, provide an electromagnetic relay that can improve product quality, reduce cost, increase creepage distance.

The utility model provides a technical scheme that its technical problem adopted is: an electromagnetic relay comprises a base, a magnetic circuit part, a contact part and a pushing clamp, wherein the magnetic circuit part comprises a winding frame, an enameled wire, an iron core and an armature, the winding frame is arranged on the base, the iron core is arranged in the winding frame, the enameled wire is wound outside the winding frame, and the contact part comprises a movable spring and a static spring which are arranged on the base; the armature iron can be asway erected on the base and is connected with the movable spring through the pushing clamp; an insulated elastic limiting part is arranged on the base and is positioned on one side of the armature far away from the iron core, and the armature is prevented from being separated from the base.

Furthermore, the base is equipped with the confession the first slot of armature bottom male the in-process of armature bottom male slot, the spacing portion of elasticity is right through elastic deformation armature bottom provides and steps down the armature bottom insert the back that targets in place, the spacing portion of elasticity recovers.

Furthermore, the elastic limiting part is an elastic retaining wall which is arranged along the width direction of the base and can elastically swing along the length direction of the base, the side surface of the elastic retaining wall is provided with a convex part facing the armature, and the convex part is abutted against one end of the armature in the process of loading one end of the armature into the base.

Furthermore, the elastic retaining wall is provided with at least one breaking groove, the elastic retaining wall is divided into at least two parts distributed along the width direction of the base, and each part is respectively provided with the convex part.

Furthermore, two ends of the elastic retaining wall in the width direction of the base are respectively connected with side walls arranged at the edge of the base; the number of the breaking grooves is one, the elastic retaining wall is divided into two parts, and the side surfaces of the adjacent ends of the two parts are respectively provided with the convex parts; and a chamfer is arranged at one end, facing the armature, of the top of the convex part.

Furthermore, the iron core is U-shaped, and two ends of the iron core face the armature respectively; the bottom end of the armature is provided with a clamping part which is clamped below one end of the iron core polar surface knife edge; and a swing space of the armature is formed between one end of the iron core pole face knife edge and the elastic limiting part, and the width of the swing space is smaller than that of the first slot.

Further, the clamping portion is a clamping table and is located on the bottom end side face of the armature and close to the iron core.

Furthermore, the elastic limiting part and the base are integrally formed by injection molding.

Furthermore, a first groove is formed in one side, far away from the armature, of the elastic limiting part on the base, and/or a second groove is formed in the position, between the two ends of the pushing clamp, of the pushing clamp.

Furthermore, a second slot and a third slot are arranged on the base, the bottom of the movable spring is inserted into the second slot, and the bottom of the static spring is inserted into the third slot; the bobbin and the base are integrally injection-molded.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. because the base of the utility model is provided with the insulated elastic limiting part at one side of the armature far from the iron core, the utility model can utilize the elastic deformation of the elastic limiting part to provide abdication for the armature in the process of loading the armature into the base, thereby plastic scraps and scrap irons can not be generated due to mutual scraping, and the quality of products can be ensured; on the other hand, after the armature is arranged in the base, the elastic limiting part has a limiting effect on the armature and prevents the armature from being separated from the base, so that an original pressure spring part can be omitted, the cost is reduced, and the creepage distance between the input end and the output end of the relay is increased.

2. Armature bottom installation back that targets in place, the spacing portion of elasticity recovers, makes the spacing portion of elasticity can realize armature's chipless formula assembly and to armature's limit function under less elastic deformation ability, promptly the utility model discloses require lowly to the elastic deformation ability of the spacing portion of elasticity, make the spacing portion of elasticity change in processing. Particularly, the elastic limiting part and the base are integrally formed in an injection molding mode, so that the elastic limiting part is free from installation.

3. The elastic limiting part is preferably the elastic retaining wall, so that the strength of the elastic limiting part can be ensured to be high. The arrangement of the breaking groove is beneficial to improving the elasticity of the elastic retaining wall.

4. The arrangement of the first groove/the second groove can further increase the creepage distance between the input end and the output end of the relay.

5. An armature swing space is formed between one end of the iron core pole face knife edge and the elastic retaining wall, the width of the swing space is smaller than that of the first slot, the armature is allowed to swing freely in the working state, and the bottom end of the armature and a clamping table of the armature are guaranteed not to be separated in the subsequent use process.

The present invention will be described in further detail with reference to the accompanying drawings and examples; however, the present invention is not limited to the embodiment.

Drawings

FIG. 1 is an exploded schematic view of the present invention;

fig. 2 is a schematic perspective view of the base of the present invention;

fig. 3 is a top view of the base of the present invention;

fig. 4 is a schematic perspective view of the present invention;

fig. 5 is a first assembly view of the armature of the present invention;

fig. 6 is a second assembly view of the armature of the present invention;

fig. 7 is a third assembly view of the armature of the present invention.

Detailed Description

In an embodiment, please refer to fig. 1-7, the electromagnetic relay of the present invention includes a base 1, a magnetic circuit portion, a contact portion, and a push card 7, wherein the magnetic circuit portion includes a bobbin 10, an enamel wire 4, an iron core 2, and an armature 3, the bobbin 10 is disposed on the base 1, and specifically, the bobbin 10 and the base 1 are integrally injection-molded. The iron core 2 is arranged in a winding frame 10, and the enameled wire 4 is wound outside the winding frame 10; the contact portion includes a movable spring 5 and a stationary spring 6 mounted on the base 1. The armature 3 is pivotably mounted on the base 1 and is connected to the movable spring 5 via a push catch 7. The base 1 is provided with an insulated elastic limiting part which is positioned on one side of the armature 3 away from the iron core 2 and prevents the armature 3 from separating from the base 1.

In this embodiment, the elastic limiting portion and the base 1 are integrally formed by injection molding. Base 1 is equipped with the confession 3 bottom male first slot 11 of armature, and this first slot 11 is located between spacing portion of elasticity and the iron core 2 the 3 bottom of armature inserts the in-process of first slot 11, the spacing portion of elasticity is right through elastic deformation 3 bottom of armature provides the abdicating the back 3 bottom of armature inserts the back of targetting in place, the spacing portion of elasticity recovers.

In this embodiment, the elastic limiting portion is an elastic retaining wall 12 which is arranged along the width direction of the base 1 and can elastically swing along the length direction of the base 1, a convex portion facing the armature 3 is arranged on the side surface of the elastic retaining wall 12, the convex portion abuts against one end of the armature 3 in the process that the armature 3 is installed in the base 1, and a chamfer is arranged at the top of the convex portion facing one end of the armature 3 to guide one end of the armature 3. The protrusion is specifically, but not limited to, a protrusion 121, and in other embodiments, the protrusion is a rib or the like disposed along the width direction of the base.

In this embodiment, two ends of the elastic retaining wall 12 in the width direction of the base 1 are respectively connected with the side walls arranged at the edge of the base 1, so as to improve the strength of the elastic retaining wall 12; the middle of the elastic retaining wall 12 is provided with an opening groove 122 (the number of the opening grooves 122 is not limited to one), the opening groove 122 divides the elastic retaining wall 12 into two parts distributed along the width direction of the base 1, the two parts are respectively provided with the protrusion 121, and specifically, the adjacent end sides of the two parts are respectively provided with the protrusion 121.

In this embodiment, a first groove 13 is disposed on the base 1 on a side of the elastic limiting portion (i.e., the elastic retaining wall 12) away from the armature 3, and two ends of the first groove 13 in the width direction of the base 1 extend to side walls disposed at the edge of the base 1 respectively. The push card 7 is provided with second grooves 71 at a position between two ends of the push card 7, the second grooves 71 are specifically located on the bottom surface of the push card 7, the number of the second grooves 71 is at least two, and the at least two second grooves 71 are distributed along the length direction of the push card 7. The first groove 13 and the second groove 71 are arranged, so that the creepage distance between the input end and the output end of the relay can be increased.

In this embodiment, the iron core 2 is U-shaped, and two ends of the iron core face the armature 3 respectively; the bottom end of the armature 3 is provided with a clamping part which is clamped below one end of the pole face knife edge of the iron core 2; one end at the position of the pole face knife edge of the iron core 2 and the elastic limiting part (namely the elastic retaining wall 12) form a swing space of the armature 3, and the width of the swing space is smaller than that of the first slot 11 and is also smaller than the maximum width of the bottom end of the armature 3.

In this embodiment, the positioning portion is a clamping table 31, which is located on one end side of the armature 3 and close to the U-shaped iron core 2.

In this embodiment, the bobbin 10 is located at one end of the base 1 in the length direction, the other end of the base 1 in the length direction is provided with a second slot 14 and a third slot 15, the bottom of the movable spring 5 is inserted into the second slot 14, and the bottom of the static spring 6 is inserted into the third slot 15.

The utility model discloses an electromagnetic relay, during the assembly, pack into bobbin 10 with iron core 2 earlier, rewind system enameled wire 4. Next, the bottom end of the armature 3 is aligned with the first slot 11 and inserted into the first slot 11, as shown in fig. 5, in the process of inserting the bottom end of the armature 3 into the first slot 11, the bottom end of the armature 3 and the clamping table 31 thereon form interference fit with the iron core 2 and the base 1, and the elastic retaining wall 12 is pushed by the bottom end of the armature 3 to elastically deform to the side away from the armature 3, as shown in fig. 6, interference between the three is reduced, so that plastic chips and iron chips cannot be generated due to mutual scraping in the process of installing the bottom end of the armature 3. After the bottom end of the armature 3 is seated, the elastic retaining wall 12 is restored as shown in fig. 7. At this time, a swing space of the armature 3 is formed between one end of the pole face knife edge of the iron core 2 and the elastic retaining wall 12, and the swing space is smaller than the maximum width of the bottom end of the armature 3 (i.e. the distance between the tail end of the clamping table 31 of the armature 3 and one side face of the armature departing from the U-shaped iron core), so that the armature 3 is allowed to swing freely in a working state, and the bottom end of the armature 3 and the clamping table 31 thereof are ensured not to be separated in a subsequent use process.

The utility model discloses an electromagnetic relay, the design of the elasticity barricade 12 on the base 1, this elasticity barricade 12 of in-process of packing into at armature 3 has reduced the interference fit volume between 2 three parts of armature 3, base 1, U type iron core through elastic deformation, reduces plastic bits, iron fillings that produce because of scraping each other between the part to improve product quality. After the base 1 is installed at the bottom end of the armature 3, the elastic retaining wall 12 is matched with the iron core 2 to limit the bottom end of the armature 3 and the clamping table 31 on the bottom end of the armature, so that an original pressure spring part can be omitted, the cost is reduced, and the creepage distance between the input end and the output end of the relay is increased.

The utility model discloses an electromagnetic relay does not relate to the part and all is the same with prior art or can adopt prior art to realize.

In other embodiments, the magnetic circuit system is horizontal and includes a yoke.

The above embodiments are only used to further illustrate the electromagnetic relay of the present invention, but the present invention is not limited to the embodiments, and any simple modification, equivalent change and modification made by the technical entity of the present invention to the above embodiments all fall into the protection scope of the technical solution of the present invention.

Claims

1. An electromagnetic relay comprises a base, a magnetic circuit part, a contact part and a pushing clamp, wherein the magnetic circuit part comprises a winding frame, an enameled wire, an iron core and an armature, the winding frame is arranged on the base, the iron core is arranged in the winding frame, the enameled wire is wound outside the winding frame, and the contact part comprises a movable spring and a static spring which are arranged on the base; the armature iron can be asway erected on the base and is connected with the movable spring through the pushing clamp; the method is characterized in that: an insulated elastic limiting part is arranged on the base and is positioned on one side of the armature far away from the iron core, and the armature is prevented from being separated from the base.

2. An electromagnetic relay according to claim 1, characterized in that: the base is equipped with the confession armature bottom male first slot the in-process of first slot is inserted to the armature bottom, the spacing portion of elasticity is right through elastic deformation armature bottom provides the abdicating the armature bottom inserts the back of targetting in place, the spacing portion of elasticity recovers.

3. An electromagnetic relay according to claim 1 or 2, characterized in that: the elastic limiting part is an edge, the width direction of the base is arranged, the elastic retaining wall can elastically swing along the length direction of the base, the side face of the elastic retaining wall is provided with a convex part facing the armature, and the convex part supports against one end of the armature in the process of loading one end of the armature into the base.

4. An electromagnetic relay according to claim 3, characterized in that: the elastic retaining wall is provided with at least one breaking groove, the elastic retaining wall is divided into at least two parts distributed along the width direction of the base, and each part is respectively provided with the convex part.

5. An electromagnetic relay according to claim 4, characterized in that: two ends of the elastic retaining wall in the width direction of the base are respectively connected with the side walls arranged at the edge of the base; the number of the breaking grooves is one, the elastic retaining wall is divided into two parts, and the side surfaces of the adjacent ends of the two parts are respectively provided with the convex parts; and a chamfer is arranged at one end, facing the armature, of the top of the convex part.

6. An electromagnetic relay according to claim 2, characterized in that: the iron core is U-shaped, and two ends of the iron core face the armature respectively; the bottom end of the armature is provided with a clamping part which is clamped below one end of the iron core polar surface knife edge; and a swing space of the armature is formed between one end of the iron core pole face knife edge and the elastic limiting part, and the width of the swing space is smaller than that of the first slot.

7. An electromagnetic relay according to claim 6, characterized in that: the clamping part is a clamping table and is located on the side face of the bottom end of the armature and close to the iron core.

8. An electromagnetic relay according to claim 1 or 2, characterized in that: the elastic limiting part and the base are integrally formed in an injection molding mode.

9. An electromagnetic relay according to claim 1 or 2, characterized in that: and a first groove is formed in one side, far away from the armature, of the elastic limiting part on the base, and/or a second groove is formed in the position, between the two ends of the pushing clamp, of the pushing clamp.

10. An electromagnetic relay according to claim 1, characterized in that: the base is provided with a second slot and a third slot, the bottom of the movable spring is inserted into the second slot, and the bottom of the static spring is inserted into the third slot; the bobbin and the base are integrally injection-molded.