CN220172018U - Moving spring part and electromagnetic relay - Google Patents

Abstract

The utility model discloses a movable spring part, comprising: a first end of the movable spring body is provided with a rotating part; the movable contact is arranged at the second end of the movable spring main body; the pressure spring is located one side of moving spring main part back to the moving contact, and pressure spring is including the fixed part, connecting portion and the deformation portion that link to each other in proper order, and fixed part is connected in moving spring main part, keeps the interval between deformation portion and the moving spring main part, and the cross section of deformation portion reduces along the direction of keeping away from connecting portion gradually. The movable spring component provided by the utility model has the advantages of simple structure, high contact pressure, strong short circuit resistance, good contact consistency and long service life. The utility model also discloses an electromagnetic relay with the movable spring component.

Description

Moving spring part and electromagnetic relay

Technical Field

The utility model relates to the technical field of electromagnetic relays, in particular to a movable spring part and an electromagnetic relay.

Background

At present, in the relay field, a plurality of groups of contact type relays are more commonly used, and the common plurality of groups of contact type relays generally comprise a body, a magnetic circuit assembly, a contact assembly and a pushing clamp, an armature of the magnetic circuit assembly is in linkage fit with a movable spring part of the contact assembly through the pushing clamp, the swinging driving of the armature is utilized to drive the pushing clamp to move, and then the movable contact of the movable spring part is driven by the pushing clamp to separate from or contact with a fixed contact of the fixed spring part, so that the purpose of conducting or cutting off a circuit is achieved.

In order to increase the contact pressure, a reaction force reed is generally provided on one side of the rigid reed, and the reaction force reed is driven to deform by the pushing force of the pushing card against the reaction force reed, thereby generating the contact pressure. Because the power source is mainly provided by the armature, the power of the armature is influenced by the distance between the armature and the electromagnetic core, the electromagnetic attraction between the armature and the electromagnetic core changes in a curve according to the change of the distance, and the elastic force of the existing counter-force reed changes approximately in a straight line, so that the increasingly high performance requirement is difficult to meet.

Disclosure of Invention

In order to overcome at least one defect in the prior art, the utility model provides a movable spring component which is simple in structure, large in contact pressure, strong in short circuit resistance, good in contact consistency and long in service life by gradually reducing the cross section of a deformation part.

The utility model adopts the technical proposal for solving the problems that:

a moving spring component comprising:

a first end of the movable spring body is provided with a rotating part;

the movable contact is arranged at the second end of the movable spring main body;

the pressure spring is located one side of moving spring main part back to the moving contact, and pressure spring is including the fixed part, connecting portion and the deformation portion that link to each other in proper order, and fixed part is connected in moving spring main part, keeps the interval between deformation portion and the moving spring main part, and the cross section of deformation portion reduces along the direction of keeping away from connecting portion gradually.

Further, the deformation portion is trapezoidal.

Further, the deformation part is in an isosceles trapezoid shape, and the included angle C between the inclined edge of the deformation part and the extending direction of the inclined edge is 15-25 ℃.

Further, the ratio of the width H1 of the end of the deformation portion to the width H2 of the connecting end of the deformation portion is between 0.35 and 0.45.

Further, a first riveting hole is formed in the movable spring main body, a second riveting hole is formed in the fixing portion, a riveting column is arranged on the movable contact, and the riveting column sequentially penetrates through the first riveting hole and the second riveting hole.

Further, the movable spring comprises a movable spring leading-out piece and a flexible connecting piece for conducting, the rotating part is rotationally arranged on the movable spring leading-out piece, and two ends of the flexible connecting piece are respectively connected with the movable spring main body and the movable spring leading-out piece.

Further, the rotating part comprises two first connecting lugs formed by bending the movable spring main body, a first through hole is formed in the first connecting lugs, a second connecting lug is arranged on the movable spring leading-out sheet, a second through hole is formed in the second connecting lug, and a rotating shaft penetrates through the first through hole and the second through hole.

Further, a first bulge which is correspondingly welded with the flexible connecting piece is arranged on the movable spring main body; and/or a second bulge which is correspondingly welded with the flexible connecting piece is arranged on the movable spring leading-out piece.

Further, the first protrusion and/or the second protrusion are formed by stamping.

Based on the same conception, the utility model also discloses an electromagnetic relay, and the moving spring component is applied.

In summary, the moving spring component and the electromagnetic relay provided by the utility model have the following technical effects:

the pressure spring is arranged on one side of the movable spring main body, which is opposite to the movable contact, so that the pressure spring is utilized to provide contact pressure for contact, and the cross section of the deformation part is gradually reduced, so that the deformation of the deformation part can generate elastic force (from small to large) which is approximately changed in a curve, the elastic force of the deformation part needs to be overcome when the armature is in an initial stage, the deformation part can provide larger contact pressure after the armature is completely sucked, the electromagnetic relay is ensured to utilize the shape of the deformation part to improve the contact pressure under the condition of normal suction, the short circuit resistance of the electromagnetic relay is further improved, and meanwhile, the consistency of contact can be improved. Other benefits of the utility model will appear in the detailed description.

Drawings

FIG. 1 is a schematic view of a moving spring assembly according to an embodiment of the present utility model;

FIG. 2 is an exploded view of a moving spring assembly according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram of a pressure spring according to an embodiment of the present utility model;

fig. 4 is a schematic structural view of an electromagnetic relay according to an embodiment of the present utility model;

fig. 5 is a schematic bottom view of the connection of the push rod, base and contact assembly according to an embodiment of the present utility model.

Wherein the reference numerals have the following meanings:

1. a housing; 2. a magnetic circuit assembly; 21. an armature; 211. extending the ribs; 3. a push rod; 301. extend into the groove; 302. a first clamping groove; 4. a base; 41. a push rod movement groove; 5. a contact assembly; 51. a moving spring member; 511. a moving spring main body; 5111. a first connection lug; 5112. a first through hole; 5113. a first rivet hole; 5114. a first protrusion; 5115. an avoidance groove; 512. a movable contact; 5121. riveting a column; 513. a pressure spring; 5131. a fixing part; 5132. a connection part; 5133. a deformation section; 5134. a second rivet hole; 514. a moving spring leading-out piece; 5141. a second connecting ear; 5142. a second through hole; 5143. a second protrusion; 515. a flexible connection member; 516. a rotating shaft; 52. a stationary spring member; 6. a bottom cover; 61. the terminal pin is perforated.

Detailed Description

For a better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model.

In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Referring to fig. 1 and 2, the present utility model discloses a movable spring member 51, the movable spring member 51 comprising: the movable spring body 511, the movable contact 512, the pressure spring 513, the movable spring leading-out piece 514 and the flexible connecting piece 515, wherein the movable spring leading-out piece 514 serves as a bearing piece and an external conductive piece in the movable spring part 51, the movable spring body 511 is rotatably installed on the movable spring leading-out piece 514, the movable contact 512 and the pressure spring 513 are installed on the movable spring body 511 to form an elastic contact piece in the movable spring part 51, and the flexible connecting piece 515 is connected between the movable spring body 511 and the movable spring leading-out piece 514 for conducting electricity.

Importantly, referring to fig. 1 and 2, in the present embodiment, a first end of the moving spring body 511 is provided with a rotating portion, and when installed, the rotating portion may be rotatably provided on the moving spring lead-out piece 514; the movable contact 512 is arranged at the second end of the movable spring main body 511; the pressure spring 513 is located at a side of the moving spring body 511 opposite to the moving contact 512, wherein the pressure spring 513 includes a fixing portion 5131, a connecting portion 5132 and a deforming portion 5133 connected in sequence, the fixing portion 5131 is connected to the moving spring body 511, in particular, a space is maintained between the deforming portion 5133 and the moving spring body 511, and a cross section of the deforming portion 5133 gradually decreases along a direction away from the connecting portion 5132.

Specifically, the rotating portion includes two first connection lugs 5111 formed by bending the moving spring main body 511, a first through hole 5112 is formed in the first connection lug 5111, a second connection lug 5141 is formed in the moving spring leading-out piece 514, a second through hole 5142 is formed in the second connection lug 5141, and a rotating shaft 516 penetrates through the first through hole 5112 and the second through hole 5142 to realize hinging between the moving spring main body 511 and the moving spring leading-out piece 514, in particular, the rotating shaft 516 is further rotatably inserted into a shaft hole of the base 4, so that a swinging axis of the moving spring main body 511 is conveniently positioned, and performance, action accuracy and the like of the moving spring main body are improved.

In another preferred embodiment, the moving spring body 511 may also be directly hinged to the base 4 through a rotating portion.

The present embodiment also discloses an electromagnetic relay to which the moving reed member 51 is applied.

To facilitate understanding of the specific application of the movable spring member 51 in the electromagnetic relay, as an example, referring to the direction shown in fig. 4, the electromagnetic relay includes a housing 1, a magnetic circuit assembly 2, a push rod 3, a base 4, a contact member 5, and a bottom cover 6, the magnetic circuit assembly 2, the push rod 3, the base 4, and the contact member 5 are all located in the housing 1, the bottom cover 6 covers the open end of the housing 1, specifically, the magnetic circuit assembly 2 and the push rod 3 are mounted above the base 4, the contact member 5 and the bottom cover 6 are mounted below the base 4, the contact member 5 is provided with four, the four contact members 5 are also arranged along the length direction of the push rod 3, the contact member 5 includes the movable spring member 51 and a stationary spring member 52, and the push rod 3 is used for driving the movable spring member 51 to close the movable contact of the movable spring member 51 and the stationary contact of the stationary spring member 52; the magnetic circuit assembly 2 comprises a coil assembly, a yoke iron, an elastic sheet and an armature 21, wherein the coil assembly is horizontally arranged, the yoke iron is connected below the coil assembly and is in plug connection with the base 4, the armature 21 is arranged at a knife edge on the left side of the yoke iron in a laterally swinging manner, the elastic sheet is connected between the yoke iron and the armature 21 to provide reset elastic force for the armature 21, and the armature 21 is in linkage fit with a movable spring part 51 of the contact assembly 5 through the push rod 3; specifically, the push rod 3 is slidably disposed on the push rod moving slot 41 of the base 4, the push rod 3 is provided with an extending slot 301 and four first clamping slots 302, the extending slot 301 is used for being matched with the extending rib 211 of the armature 21 to realize linkage between the push rod 3 and the armature 21, the first clamping slots 302 are used for being matched with the moving spring part 51 of the contact assembly 5 to realize linkage between the push rod 3 and the moving spring part 51, one side, facing the moving contact 512, of the moving spring main body 511 can be used for being abutted against one side of the first clamping slot 302 of the push rod 3, and the pressure spring 513 can be used for being abutted against the other side of the first clamping slot 302 of the push rod 3. When the coil assembly is electrified, the armature 21 swings anticlockwise relative to the yoke, the armature 21 swings to drive the push rod 3 to slide leftwards, and the push rod 3 slides to synchronously drive the four movable spring parts 51 to face the fixed spring part 52, so that the movable contact and the fixed contact are contacted.

The number of the first clamping grooves 302 may be two, three, five, or the like, and the specific number of the first clamping grooves 302 is not limited in the present utility model, and the number of the movable spring members 51 to be synchronously driven may be correspondingly set.

In the above-mentioned scheme, after the coil assembly of the magnetic circuit assembly 2 is energized, the armature 21 is attracted and swung, the armature 21 drives the push rod 3 to slide, the push rod 3 pushes the pressure spring 513 to move through the first clamping groove 302, so that the movable contact 512 is closed with the stationary contact of the stationary spring component 52, meanwhile, through the stroke design, the deformation portion 5133 of the pressure spring 513 continues to deform after the contact is closed, so as to provide contact pressure for contact by using the pressure spring 513, and the deformation of the deformation portion 5133 can generate elastic force (from small to large) with approximately curved change, so that the armature 21 needs to overcome the smaller elastic force of the deformation portion 5133 in the initial stage, and the deformation portion 5133 can provide larger contact pressure after the armature 21 is completely attracted, so that under the condition of normal attraction, the contact pressure is improved by using the shape of the deformation portion 5133, the short circuit resistance is further improved, and the consistency of contact is also improved.

In order to realize the installation and outward conduction of the movable spring lead-out piece 514, specifically, referring to fig. 4 and 5, the movable spring lead-out piece 514 is inserted on the base 4, and the end feet of the movable spring lead-out piece 514 are exposed outwards through the end foot through holes 61 of the bottom cover 6.

Referring to fig. 2, preferably, in order to mount the movable contact 512 on the movable spring body 511, a rivet column 5121 is provided on the movable contact 512, and a first rivet hole 5113 for connecting with the rivet column 5121 is provided on the movable spring body 511; in order to simplify the installation of the pressure spring 513, in particular, the fixing portion 5131 is provided with a second rivet hole 5134 for connecting with the rivet column 5121, and when installed, the rivet column 5121 sequentially passes through the first rivet hole 5113 and the second rivet hole 5134, so that the movable contact 512 and the pressure spring 513 are riveted on the movable spring body 511 together, thereby saving cost and simplifying the production process.

Referring to fig. 3, in the present embodiment, it is preferable that the deformation portion 5133 is substantially trapezoidal, in particular, the deformation portion 5133 is in an isosceles trapezoid shape, and the included angle C between the oblique side of the deformation portion 5133 and the extending direction thereof is 15 ℃ to 25 ℃, as a specific example, the included angle C is 18 ℃, so as to better control the elastic curve of the deformation portion 5133 to approach to the electromagnetic attraction force of the armature 21.

Still more preferably, the ratio of the width H1 of the distal end of the deformation portion 5133 to the width H2 of the connection end of the deformation portion 5133 is between 0.35 and 0.5, and as a specific example, the width H1 is 3mm and the width H2 is 6.5mm.

Of course, in other preferred embodiments, the deformation portion 5133 may also have an inner arc shape or an outer arc shape of the flare surface.

In this embodiment, referring to fig. 1, in order to better implement electrical connection of the flexible connection member 515, the movable spring main body 511 is provided with a first protrusion 5114 and/or a movable spring pull-out piece 514, which are correspondingly welded to the flexible connection member 515, and a second protrusion 5143, which is correspondingly welded to the flexible connection member 515, is provided on the movable spring main body 511, and particularly, the first protrusion 5114 and/or the second protrusion 5143 are formed in a stamping manner, so that the movable spring main body 511 and/or the movable spring pull-out piece 514 can be conveniently produced.

Referring to fig. 4 and 5, the electromagnetic relay provided by the utility model has the following working processes: with the direction of fig. 4 as a reference, when the coil assembly is electrified, the armature 21 swings anticlockwise relative to the yoke, and the armature 21 swings to drive the push rod 3 to slide leftwards through the cooperation of the extension rib 211 and the extension groove 301; the push rod 3 slides and synchronously drives the four movable spring parts 51 to move towards the fixed spring part 52 by using the four first clamping grooves 302, specifically, taking the direction of fig. 5 as a reference, the first clamping grooves 302 of the push rod 3 push the pressure spring 513 to move leftwards, the elastic force of the pressure spring 513 acts on the movable spring main body 511 and makes the movable spring main body 511 rotate clockwise until the movable contact 512 is closed with the fixed contact of the fixed spring part 52, the armature 21 continues to swing, the push rod 3 continues to slide leftwards, the first clamping grooves 302 continue to push the pressure spring 513 to move and deform, and the pressure spring 513 provides the elastic force with curve change to act on the movable contact 512; after the coil assembly is de-energized, the components begin to reset.

In summary, according to the moving spring component 51 and the electromagnetic relay provided by the utility model, the pressure spring 513 is utilized to provide the contact pressure for the contact, and the gradual reduction of the cross section of the deformation portion 5133 is utilized, so that the deformation of the deformation portion 5133 can generate the elastic force (from small to large) which is approximately changed in a curve, so that the armature 21 needs to overcome the smaller elastic force of the deformation portion 5133 in the initial stage, and the deformation portion 5133 can provide a larger contact pressure after the armature 21 is completely sucked, thus, under the condition of normal suction of the electromagnetic relay, the contact pressure is improved by utilizing the shape of the deformation portion 5133, the short circuit resistance is improved, and the consistency of the contact is also improved; the movable contact 512 and the pressure spring 513 are sequentially riveted to the movable spring body 511 by means of the rivet posts 5121 passing through the first rivet holes 5113 and the second rivet holes 5134, thereby saving costs and simplifying a manufacturing process.

The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims (10)

1. A moving spring component, comprising:

the movable spring body is provided with a rotating part at the first end;

the movable contact is arranged at the second end of the movable spring main body;

the pressure spring is located moving spring main part dorsad moving contact's one side, the pressure spring is including consecutive fixed part, connecting portion and deformation portion, fixed part connect in moving spring main part, deformation portion with keep the interval between the moving spring main part, just the cross section of deformation portion is followed and is kept away from connecting portion's direction reduces gradually.

2. The moving spring part according to claim 1, wherein the deformation portion has a trapezoidal shape.

3. The moving spring part according to claim 2, wherein the deformation portion has an isosceles trapezoid shape, and an angle C between a hypotenuse of the deformation portion and an extension direction thereof is 15 ℃ to 25 ℃.

4. The moving spring part according to claim 2, wherein a ratio of a width H1 of a distal end of the deformation portion to a width H2 of a connecting end of the deformation portion is between 0.35 and 0.45.

5. The movable spring part according to claim 1, wherein a first riveting hole is formed in the movable spring body, a second riveting hole is formed in the fixing portion, a riveting column is arranged on the movable contact, and the riveting column sequentially penetrates through the first riveting hole and the second riveting hole.

6. The moving spring part according to any one of claims 1 to 5, further comprising a moving spring lead-out piece and a flexible connecting piece for electric conduction, wherein the rotating part is rotatably provided on the moving spring lead-out piece, and both ends of the flexible connecting piece are respectively connected to the moving spring main body and the moving spring lead-out piece.

7. The movable spring part according to claim 6, wherein the rotating part comprises two first connecting lugs formed by bending the movable spring main body, a first through hole is formed in the first connecting lugs, a second connecting lug is formed in the movable spring leading-out piece, a second through hole is formed in the second connecting lug, and a rotating shaft penetrates through the first through hole and the second through hole.

8. The movable spring part according to claim 6, wherein the movable spring main body is provided with a first protrusion for correspondingly welding the flexible connecting piece; and/or the movable spring leading-out sheet is provided with a second bulge which is correspondingly welded with the flexible connecting piece.

9. The moving spring part according to claim 8, wherein the first projection and/or the second projection is formed by punching.

10. An electromagnetic relay, characterized in that the moving spring part according to any one of claims 1 to 9 is applied.