CN218004741U

CN218004741U - Clapper type electromagnetic relay

Info

Publication number: CN218004741U
Application number: CN202222000206.7U
Authority: CN
Inventors: 吴灵勇; 陈志强; 陈政和
Original assignee: Xiamen Hongfa Automotive Electronics Co Ltd
Current assignee: Xiamen Hongfa Automotive Electronics Co Ltd
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2022-12-09
Anticipated expiration: 2032-07-29

Abstract

The utility model discloses a clapper type electromagnetic relay, which comprises a coil rack, a movable spring armature component and a static spring piece arranged on the coil rack, wherein a movable contact point arranged on the movable spring armature component is correspondingly matched with a static contact point arranged on the static spring piece; the coil frame is characterized by further comprising a stopping sheet, the stopping sheet is installed on the coil frame, the position, provided with the moving contact, of the moving spring armature component is located between the stopping sheet and the static spring, and the moving spring armature component is in contact with the stopping sheet in a disconnecting state of the moving contact and the static contact. The utility model discloses utilize the backstop piece to replace prior art's normally closed static spring to carry on spacingly to moving spring armature part, avoid moving contact and stationary contact off-state moving spring armature part displacement too big to moving contact and stationary contact can't be closed when avoiding the coil to add the excitation.

Description

Clapper type electromagnetic relay

Technical Field

The utility model relates to a relay especially relates to a clapper formula electromagnetic relay.

Background

A relay is an electronic control device, which has a control system (also called an input loop) and a controlled system (also called an output loop), is usually applied to an automatic control circuit, and is actually an "automatic switch" which uses a small current to control a large current, and thus plays roles of automatic regulation, safety protection, circuit switching and the like in the circuit.

A small-size clapper formula electromagnetic relay of prior art installs normally open quiet spring and normally closed quiet spring on the coil former, during falling cartridge, the contact part of normally closed quiet spring is last, and the contact part of normally open quiet spring is under, and the part that sets up the movable contact on the movable spring armature part is located between normally open quiet spring and the normally closed quiet spring, through the coil to the relay add the excitation or deexcite, make the movable contact of movable spring armature part and the quiet contact closure of normally open quiet spring or with the quiet contact closure of normally closed quiet spring, thereby constitute conversion type relay. When changing this kind of relay into normal open type relay, need take off the quiet spring of normal close, but if just tear the quiet spring of normal close open down, then the coil deexcitation time, movable spring armature part receives movable contact spring self counter force effect to move originally can continue to the direction motion of keeping away from the quiet spring of normal close open when with the quiet spring complex position of normal close, lead to the distance between armature and the iron core too big, thereby lead to the magnetic attraction between armature and the core to be less than the counter force of movable contact spring, and then when leading to the coil to add the excitation, the movable contact can't be closed with the stationary contact on the quiet spring of normally opening.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem to prior art exists provides a clapper type electromagnetic relay, and it is through adopting the backstop piece to replace the quiet spring of normal close, solves the unable closed problem of contact.

The utility model provides a technical scheme that its technical problem adopted is: a clapper type electromagnetic relay comprises a coil rack, a movable spring armature component and a static spring piece arranged on the coil rack, wherein a movable contact arranged on the movable spring armature component is correspondingly matched with a static contact arranged on the static spring piece; the coil frame is characterized by further comprising a stopping sheet, the stopping sheet is installed on the coil frame, the position, provided with the moving contact, of the moving spring armature component is located between the stopping sheet and the static spring, and the moving spring armature component is in contact with the stopping sheet in a disconnecting state of the moving contact and the static contact.

Furthermore, a yielding notch is arranged on the stop sheet, the yielding notch is used for avoiding the edge part of the movable spring armature component on the arc motion path, and the arc is generated when the movable contact and the fixed contact are disconnected.

Furthermore, the coil former comprises a shell with an opening at one end and a substrate, wherein the substrate is connected to the end, provided with the opening, of the shell, and the coil former and all parts on the coil former are accommodated in a shell cavity enclosed by the shell and the substrate.

Furthermore, the shell is provided with an inner side face which is closest to the stop piece and the part of the static reed, which is provided with the static contact, and the distance between the stop piece and the inner side face is larger than the distance between the part of the static reed, which is provided with the static contact, and the inner side face.

The coil frame is provided with a coil frame, the coil frame is provided with a movable spring armature part, the coil frame is provided with a coil, the movable spring armature part is arranged on the coil frame, the coil is arranged in the coil frame, and the coil is arranged in the coil frame; the coil frame is wound with a coil and is provided with two coil leading-out pins electrically connected with the coil, and the inner side surface of the shell is respectively provided with a blocking part at the position between each coil leading-out pin and the other side of the yoke.

Further, the blocking part is a plate-shaped convex rib extending along the axial direction of the coil rack and is close to the other side of the yoke iron.

Furthermore, one end of the shell, which is provided with an opening, faces upwards, and the stop piece and the static reed are positioned between the substrate and the coil rack; the static reed is provided with a static spring leading-out pin which extends towards the stop piece and penetrates through the base plate.

Furthermore, one end of the stopping sheet is bent and forked to form a plurality of pins, and each pin is inserted into a corresponding slot on the coil rack; the pin of the stop piece and the pin of the static spring lead-out pin are respectively positioned at two opposite sides of the movable spring armature component.

Furthermore, the movable spring armature part comprises a movable spring and an armature, the movable spring is L-shaped, one side of the movable spring is fixed with the armature and is provided with the movable contact, and the other side of the movable spring is fixedly connected with the other side of the yoke.

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

1. because the utility model discloses still include the backstop piece, this backstop piece is installed on the coil former, the position that movable spring armature part was provided with the movable contact is located between backstop piece and the stationary contact piece, just movable spring armature part is in movable contact and stationary contact off-state touch lean on in the backstop piece makes the utility model discloses can utilize the backstop piece to replace prior art's normally closed stationary spring to carry on spacingly to movable spring armature part, avoid moving contact and stationary contact off-state movable spring armature part displacement too big at movable contact and stationary contact to movable contact and stationary contact can't be closed when avoiding the coil to add the excitation.

2. And the stopping piece is provided with a yielding notch which is used for avoiding the edge part of the movable spring armature component on the arc motion path, so that the phenomenon that the edge of the movable spring is cooled by a melt formed by melting the arc and sticks to the stopping piece to cause product failure is avoided. Meanwhile, the abdicating notch is beneficial to the circulation of hot gas and metal splashes from the abdicating position, the temperature near the contact is reduced, and the electric service life times of the product are increased.

3. The distance between the stop piece and the inner side face of the shell is larger than the distance between the part of the static contact provided with the static contact and the outer inner side face, so that the pressure resistance and the insulating strength between the disconnecting contacts can be improved.

4. The arrangement of the partition part can increase the creepage distance from the coil to the contact and improve the insulating capability of the product.

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 view of the present invention;

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

fig. 3 is a schematic perspective view of the present invention;

fig. 4 is a top view of the present invention;

FIG. 5 isbase:Sub>A sectional view A-A of FIG. 4;

fig. 6 is a schematic perspective view of the housing of the present invention;

fig. 7 is a top view of the housing of the present invention;

FIG. 8 is a cross-sectional view B-B of FIG. 7;

fig. 9 is a front view of the present invention;

fig. 10 is a cross-sectional view C-C of fig. 9.

Detailed Description

In the description, the directions or positional relationships indicated by "up" and "down" are based on the directions or positional relationships shown in the drawings, and are only for convenience of description of the present invention, but the directions or the implications indicate that the device to be referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, should not be interpreted as limiting the scope of the present invention. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be. In addition, in the description of the present application, "a plurality" means two or more unless otherwise specified.

Referring to fig. 1-10, a clapper type electromagnetic relay of the present invention includes a coil frame 1, a yoke 7, an iron core, a movable spring and armature component 2, a stationary spring piece 3 and a stop piece 4, wherein the coil frame 1 is wound with a coil 5 and is provided with two coil lead-out pins 6 electrically connected to the coil 5. The iron core is arranged in the coil frame 1 in a penetrating mode, the yoke iron 7 is L-shaped, one side of the yoke iron 7 is fixedly connected with one end, far away from the movable spring armature component 2, of the iron core, and the other side of the yoke iron 7 is located on the side face of the coil frame 1; the movable spring armature component 2 comprises a movable spring piece 21 and an armature 22, the movable spring piece 21 is L-shaped, one side of the movable spring piece 21 is fixed with the armature 22 and is provided with the movable contact 23, and the other side of the movable spring piece 21 is fixedly connected with the other side of the yoke 7. The static spring 3 is arranged on the coil rack 1, and the movable contact 23 arranged on the movable spring armature component 2 is correspondingly matched with the static contact 31 arranged on the static spring 3. The stop piece 4 is installed on the coil rack 1, the part of the movable spring armature component 2 provided with the movable contact 23 is positioned between the stop piece 4 and the static spring 3, and the movable spring armature component 2 contacts and leans against the stop piece 4 when the movable contact 23 is disconnected with the static contact 31.

In this embodiment, as shown in fig. 2, the stopping sheet 4 is provided with a yielding notch 41, and the yielding notch 41 is used for yielding an edge portion of the moving spring armature component 2 on an arc motion path, where the arc is an arc generated when the moving contact 23 is disconnected from the stationary contact 31. One end of the stopping sheet 4 is bent and forked to form a plurality of pins 42, and each pin 42 is inserted into a corresponding slot on the coil rack 1. The number of the pins 42 is specifically two, but is not limited thereto.

In this embodiment, the utility model discloses still include one end open-ended shell 8 and base plate 9, base plate 9 connect in shell 8 is equipped with open-ended one end department, coil former 1 and each parts thereon hold in the shell cavity that shell 8 and base plate 9 enclose. Specifically, the end of the housing 8 with the opening faces upward, and the stop piece 4 and the static reed 3 are located between the substrate 9 and the coil rack 1; the stationary spring piece 3 is provided with a stationary spring lead-out pin 32, and the stationary spring lead-out pin 32 extends in the direction of the stopper piece 4 and penetrates the base plate 9. The pin 22 of the stop piece 4 and the static spring lead-out pin 32 are positioned on two opposite sides of the movable spring armature component 2. Therefore, the utility model discloses constitute flip-chip formula claps and closes the relay.

In this embodiment, the housing 8 has an inner side surface closest to the stop sheet 4 and the part of the static spring 4 where the static contact 31 is provided, and a distance L1 between the stop sheet 4 and the inner side surface is greater than a distance L2 between the part of the static spring 4 where the static contact 31 is provided and the inner side surface, as shown in fig. 5.

In this embodiment, the inner side surface of the case 8 is provided with a stopper portion at a position between each coil lead-out pin 6 and the other side of the yoke 7. Specifically, the blocking portion is a plate-shaped rib 81 extending in the axial direction of the bobbin 1 and is located near the other side of the yoke 7, as shown in fig. 6 to 8. The arrangement of the convex rib 81 enables the withstand voltage creepage distance from the coil leading-out pin 6 to the nearest yoke 7 to be only along the path of the convex rib 81 of the shell, which is equivalent to 2 times the creepage distance without the convex rib 81 of the shell, meanwhile, the increased convex rib 81 has no influence on the mold production, and the high insulation requirement between coil contacts can be met without increasing the volume of the product and changing the structure of the product, so that the higher customer requirement is met, as shown in fig. 10, the creepage path between the coil 5 and the contacts is indicated by arrows in the figure.

When the coil 5 is excited, the movable spring armature component 2 swings towards the direction of the static spring 3 under the action of electromagnetic attraction, so that the movable contact 23 and the static contact 31 are closed; when the coil 5 is deenergized, the movable spring armature component 2 swings and resets towards the direction of the stop piece 4 under the action of the counterforce of the movable spring piece 21 until the movable spring armature component contacts with the stop piece 4. The stopping sheet 4 replaces a normally closed static reed in the prior art to limit the movable spring armature component 2, and avoids overlarge reset displacement of the movable spring armature component 2, so that the movable contact 23 and the static contact 31 cannot be closed when a coil is excited.

The distance L1 between the stop piece 4 and the shell 8 is larger than the distance L2 between the part of the static spring piece 4 provided with the static contact 31 and the shell 8, so that the withstand voltage and the insulating strength between the movable contact 23 and the static contact 31 are improved. Set up the breach of stepping down 41 on backstop piece 4, can avoid movable contact spring 21 edge to be glued by the melt cooling that the electric arc melts the formation and stop the piece 4, cause the product inefficacy, simultaneously the breach of stepping down 41 is favorable to steam and metal splash to follow the circulation of the department of stepping down, reduces the temperature near the contact, increases the electric life number of times of product. This is because the arc generated when the contact is opened is subject to the action of the electric power, and the arc is drawn toward the receding notch 41, so that the edge of the movable spring 21 is melted, and if the stopping sheet 4 does not recede from the receding notch 41, the melt of the movable spring 21 is cooled and adheres to the stopping sheet 4, so that the product fails.

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

The above-mentioned embodiment is only used to further explain the utility model discloses a clapper type electromagnetic relay, but the utility model discloses do not limit to the embodiment, all be according to the utility model discloses a technical entity does any simple modification, equivalent change and modification to above embodiment, all fall into the protection scope of the technical scheme of the utility model.

Claims

1. A clapper type electromagnetic relay comprises a coil rack, a movable spring armature component and a static spring piece arranged on the coil rack, wherein a movable contact arranged on the movable spring armature component is matched with a static contact arranged on the static spring piece correspondingly; the method is characterized in that: the coil frame is characterized by further comprising a stopping sheet, the stopping sheet is installed on the coil frame, the position, provided with the moving contact, of the moving spring armature component is located between the stopping sheet and the static spring, and the moving spring armature component is in contact with the stopping sheet in a disconnecting state of the moving contact and the static contact.

2. The clapper electromagnetic relay of claim 1, wherein: the moving spring armature component is characterized in that a yielding notch is formed in the stop piece, the edge of the moving spring armature component on an electric arc motion path is avoided by the yielding notch, and the electric arc is generated when the moving contact and the fixed contact are disconnected.

3. The clapper type electromagnetic relay according to claim 1 or 2, characterized in that: the coil rack comprises a coil rack body, and is characterized by further comprising a shell with an opening at one end and a substrate, wherein the substrate is connected to the end, provided with the opening, of the shell, and the coil rack and all parts on the coil rack are accommodated in a shell cavity formed by the shell and the substrate in a surrounding mode.

4. The clapper electromagnetic relay of claim 3, wherein: the shell is provided with an inner side face which is closest to the stop sheet and the part of the static reed, which is provided with the static contact, and the distance between the stop sheet and the inner side face is larger than the distance between the part of the static reed, which is provided with the static contact, and the inner side face.

5. The clapper electromagnetic relay of claim 3, wherein: the coil rack is characterized by further comprising a yoke iron and an iron core, wherein the iron core is arranged in the coil rack in a penetrating mode, the yoke iron is L-shaped, one side of the yoke iron is fixedly connected with one end, far away from the movable spring armature component, of the iron core, and the other side of the yoke iron is located on the side face of the coil rack; the coil frame is wound with a coil and is provided with two coil leading-out pins electrically connected with the coil, and the inner side surface of the shell is respectively provided with a blocking part at the position between each coil leading-out pin and the other side of the yoke.

6. The clapper type electromagnetic relay according to claim 5, wherein: the blocking part is a plate-shaped convex rib extending along the axial direction of the coil rack and is close to the other side of the yoke iron.

7. The clapper type electromagnetic relay according to claim 3, wherein: the end of the shell, provided with the opening, faces upwards, and the stop piece and the static reed are positioned between the substrate and the coil rack; the static reed is provided with a static spring leading-out pin which extends towards the direction of the stopping piece and penetrates through the base plate.

8. The clapper type electromagnetic relay according to claim 7, wherein: one end of the stopping sheet is bent and forked to form a plurality of pins, and each pin is inserted into a corresponding slot on the coil rack; the pin of the stopping sheet and the pin of the static spring are respectively positioned at two opposite sides of the moving spring armature component.

9. The clapper electromagnetic relay of claim 5, wherein: the movable spring armature component comprises a movable spring and an armature, the movable spring is L-shaped, one side of the movable spring is fixed with the armature and provided with the movable contact, and the other side of the movable spring is fixedly connected with the other side of the yoke.