CN211350492U - Electromagnetic relay capable of reducing contact disconnection jitter - Google Patents

Electromagnetic relay capable of reducing contact disconnection jitter Download PDF

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Publication number
CN211350492U
CN211350492U CN202020192178.1U CN202020192178U CN211350492U CN 211350492 U CN211350492 U CN 211350492U CN 202020192178 U CN202020192178 U CN 202020192178U CN 211350492 U CN211350492 U CN 211350492U
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China
Prior art keywords
movable spring
movable
piece
contact
spring
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Withdrawn - After Issue
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CN202020192178.1U
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Chinese (zh)
Inventor
钟叔明
何仲波
黄庆阳
吴保霖
胡伟浩
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Xiamen Hongfa Electric Power Controls Co Ltd
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Xiamen Hongfa Electric Power Controls Co Ltd
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Abstract

The utility model discloses an electromagnetic relay capable of reducing the shaking of contact disconnection, which comprises a movable spring part, a static spring part and a pushing card; the static spring part comprises a static spring sheet and a static contact; the movable spring part comprises a movable spring piece, a movable contact and a movable spring leading-out piece, the movable spring piece and the movable spring leading-out piece are connected into a V shape, and a gasket is fixedly attached to the position of one surface of the movable spring piece facing the movable spring leading-out piece, where the movable contact is fixed; the gasket is integrally provided with an elastic piece which extends obliquely towards the direction of the movable spring lead-out piece, a preset gap is formed between the free tail end of the elastic piece and the movable spring lead-out piece when the movable contact and the static contact are not disconnected, and the free tail end of the elastic piece is propped against the movable spring lead-out piece when the movable contact and the static contact are disconnected. The utility model discloses a this kind of structure can utilize this flexure strip compression deformation, consumes the kinetic energy of movable contact spring disconnection to shake phenomenon when reducing the contact disconnection avoids the drawback that prior art brought because of the shake of movable contact.

Description

Electromagnetic relay capable of reducing contact disconnection jitter
Technical Field
The utility model relates to a relay technical field especially relates to an electromagnetic relay that can reduce contact disconnection shake.
Background
The electromagnetic relay is an electromechanical element widely applied to various household appliances, office equipment and industrial control. An electromagnetic relay generally includes a contact portion including a movable spring portion and a stationary spring portion, a magnetic circuit portion, a pushing portion, and a base, the pushing portion being connected between the movable spring portion and the magnetic circuit portion, and when the magnetic circuit portion operates, the movable spring portion is driven by the pushing portion to move, so that a movable contact of the movable spring portion is brought into contact with (i.e., contact is closed) or separated from (i.e., contact is open) a stationary contact of the stationary spring portion. In the electromagnetic relay in the prior art, electric arcs can be generated between a moving contact and a static contact in the disconnection process, so that the contacts of the relay are ablated, metal spikes and splashes are generated, and the dielectric withstand voltage and the insulating withstand voltage performance of the relay can be reduced; even the fatal defect that the contact is stuck or seriously ablated to cause the non-conduction of the relay is generated; therefore, the existing electromagnetic relay needs to be additionally provided with an arc extinguishing structure to realize arc extinguishing. However, in the opening process of the electromagnetic relay, the movable spring can do reciprocating amplitude motion due to the inertia effect, when the movable spring moves to a certain contact gap in the contact closing direction, secondary or repeated reignition of electric arc is easily caused, and further contact ablation is aggravated, so that the relay fails in advance. Moreover, the reignition arc is easy to generate high temperature and damage the contact morphology, so that the relay has fatal defects and damages the insulating capability and the voltage resistance of the relay.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide an electromagnetic relay that can reduce the shake of contact disconnection, through institutional advancement, shake phenomenon when can reducing the movable contact disconnection avoids prior art because of the drawback that the shake of movable contact brought.
The utility model provides a technical scheme that its technical problem adopted is: an electromagnetic relay capable of reducing contact opening jitter, comprising a movable spring part, a static spring part and a pushing card; the static spring part comprises a rigid static spring piece and a static contact fixed on the static spring piece; the movable spring part comprises a flexible movable spring piece, a movable contact and a rigid movable spring leading-out piece, one end of the movable spring piece is fixed with one end of the movable spring leading-out piece and connected into a V shape, the end head of the other end of the movable spring piece is connected with the pushing clamp, the movable contact is fixed on the surface, back to the movable spring leading-out piece, in the end head of the other end of the movable spring piece, and the movable contact is correspondingly matched with the fixed contact of the fixed spring part; a gasket is fixedly attached to the position, where the movable contact is fixed, of one surface of the movable spring piece, which faces the movable spring leading-out piece; the gasket is integrally provided with an elastic sheet which extends obliquely towards the direction of the movable spring lead-out sheet, a preset gap is formed between the free tail end of the elastic sheet and the movable spring lead-out sheet when the movable contact and the static contact are not disconnected, and the free tail end of the elastic sheet is propped against the movable spring lead-out sheet when the movable contact and the static contact are disconnected, so that the elastic sheet is compressed and deformed to consume the kinetic energy of the movable spring for disconnection, and the shaking phenomenon of the contact during disconnection is reduced.
The tail end of the movable contact penetrates through the movable spring piece and the gasket positioned on one surface of the movable spring piece facing the movable spring piece from one surface of the movable spring piece back to the movable spring piece, and the gasket and the movable spring piece are fixed together in a riveting mode.
The free tail end of the elastic piece is provided with a bending part and is bent towards the direction departing from the movable spring leading-out piece, and when the movable contact and the static contact are disconnected, the bending part at the free tail end of the elastic piece is propped against the movable spring leading-out piece.
The gasket is integrally provided with two elastic pieces, and projections of center lines of the two elastic pieces in the length direction on the movable spring piece form a straight line.
The distance between the free ends of the two elastic sheets is gradually increased in the direction towards the movable spring leading-out sheet.
The distance between the free ends of the two elastic sheets is gradually reduced in the direction towards the movable spring leading-out sheet.
A straight line formed by the projection of the central lines of the lengths of the two elastic pieces on the movable spring piece passes through the center of the movable contact.
The projection of the central lines of the lengths of the two elastic pieces on the movable spring piece forms a straight line in the width direction of the movable spring piece.
The projection of the central lines of the lengths of the two elastic pieces on the movable spring piece forms a straight line in the length direction of the movable spring piece.
The end part of the other end of the movable spring is provided with a U-shaped strip groove along the length direction of the movable spring, so that the movable spring part in the U-shaped opening is a tongue piece which can freely swing relative to the movable spring body, and the movable contact is fixed on the tongue piece; the gasket is integrally provided with a limiting part which stretches across the U-shaped strip groove corresponding to the width direction of the movable spring piece so as to limit the tongue piece to move towards the direction of the static contact relative to the movable spring piece body.
One side edge of the gasket is also integrally bent and provided with a positioning part which is used for being attached to one side of the width of the movable spring plate.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model adopts the mode that a gasket is fixedly connected to the position of the movable contact fixed on the surface of the movable spring piece facing to the movable spring leading-out piece; and the gasket is integrally provided with an elastic sheet which extends obliquely towards the direction of the movable spring leading-out sheet, when the movable contact and the static contact are not disconnected, a preset gap is formed between the free tail end of the elastic sheet and the movable spring leading-out sheet, and when the movable contact and the static contact are disconnected, the free tail end of the elastic sheet is propped against the movable spring leading-out sheet. The utility model discloses a this kind of structure can utilize this flexure strip compression deformation, consumes the kinetic energy of movable contact spring disconnection to shake phenomenon when reducing the contact disconnection, the utility model discloses because the flexure strip is through the gasket snap-on the movable contact, and it is integrative to rivet with the movable contact, on some component force of flexure strip compression deformation can directly transmit the movable contact, and the quality of movable contact is the biggest, and inertia is the biggest, and kinetic energy when moving the spring shake mainly concentrates on the movable contact, therefore can most effectually restrain the movable contact shake (furthest's reduction contact shake), reduce the movable spring amplitude, avoid the production of secondary or many times arcing.
2. The utility model discloses owing to adopted the integrative two flexure strips that are equipped with of gasket, and the projection of the length direction's of two flexure strips on movable contact spring becomes a straight line. The utility model discloses a balance about this kind of structure, two flexure strips and the contact point that the piece was drawn forth to the movable spring has avoided taking place the drawback that the movable spring piece wrench movement.
3. The utility model discloses owing to adopted and designed into the center through the movable contact with a straight line that the projection of the central line of the length of two flexure strips constitutes on the movable contact spring. The utility model discloses a this kind of structure can let on some component force of flexure strip compressive deformation transmits the movable contact effectively to furthest's reduction contact shake.
4. The utility model adopts the U-shaped strip groove arranged at the end part of the other end of the movable spring leaf along the length direction of the movable spring leaf, so that the movable spring leaf part in the U-shaped opening is a tongue piece which can freely swing relative to the movable spring leaf body, and the movable contact is fixed on the tongue piece; the gasket is integrally provided with a limiting part which stretches across the U-shaped strip groove corresponding to the width direction of the movable spring. The utility model discloses a this kind of structure, because the movable contact is in U type strip inslot, whole focus all is on the tongue piece, and consequently inertia is the biggest here, so the shake frequency of tongue piece is big than the shake frequency of movable contact spring body, and the flexure strip directly acts on the tongue piece, can directly restrain the biggest position of shake frequency.
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, and an electromagnetic relay capable of reducing the contact opening jitter is provided.
Drawings
Fig. 1 is a partial schematic structural diagram (contact open) of a first embodiment of the present invention;
FIG. 2 is an enlarged schematic view of section A of FIG. 1;
fig. 3 is a partial schematic structural view (contact closed) of the first embodiment of the present invention;
FIG. 4 is an enlarged schematic view of section B of FIG. 2;
fig. 5 is a schematic structural diagram of a gasket according to a first embodiment of the present invention;
fig. 6 is a schematic structural diagram of a movable spring and a movable contact according to a first embodiment of the present invention;
fig. 7 is a schematic structural diagram of the gasket, the movable spring and the movable contact assembled together according to the first embodiment of the present invention;
fig. 8 is a schematic structural view (turned by an angle) of the gasket, the movable spring and the movable contact of the first embodiment of the present invention assembled together;
fig. 9 is a front view of the gasket, the movable spring and the movable contact assembled together according to the first embodiment of the present invention;
FIG. 10 is a sectional view taken along line C-C of FIG. 9;
FIG. 11 is a cross-sectional view taken along line D-D of FIG. 9;
fig. 12 is a schematic structural view illustrating a gasket and a movable spring partially assembled together according to a first embodiment of the present invention;
FIG. 13 is a sectional view taken along line E-E of FIG. 12;
fig. 14 is a schematic structural view of a gasket according to a second embodiment of the present invention;
fig. 15 is a front view of the gasket, the movable spring plate and the movable contact of the third embodiment of the present invention assembled together;
fig. 16 is a front view of the gasket, the movable spring plate and the movable contact of the fourth embodiment of the present invention assembled together;
fig. 17 is a side view of a gasket, a movable spring and a movable contact according to a fourth embodiment of the present invention;
fig. 18 is a front view of the gasket, the movable spring plate and the movable contact of the fifth embodiment of the present invention assembled together;
fig. 19 is a bottom view of the fifth embodiment of the present invention with the gasket, the movable spring and the movable contact assembled together;
fig. 20 is a rear view of the gasket, the movable spring plate and the movable contact of the fifth embodiment of the present invention assembled together.
Detailed Description
Example one
Referring to fig. 1 to 13, the electromagnetic relay capable of reducing contact opening jitter of the present invention is applied to a magnetic latching relay, and includes a magnetic circuit system, a contact system, a pushing portion and a base; the magnetic circuit system generally consists of two substantially symmetrical magnetic circuits, comprising a stationary magnetic conductor part 11, a movable magnetic conductor part 12 and a coil 13, the contact system comprising a movable spring part 2 and a stationary spring part 3, the pushing part generally being acted upon by a pushing card 4. The static spring part 3 comprises a rigid static spring piece 31 and a static contact 32 fixed on the static spring piece 31; the movable spring part 2 comprises a flexible movable spring piece 21, a movable contact 22 and a rigid movable spring leading-out piece 23, one end of the movable spring piece 21 is fixed with one end of the movable spring leading-out piece 23 and is connected into a V shape approximately, the end head of the other end of the movable spring piece 21 is connected with the pushing card 4, the movable contact 22 is fixed on one surface, back to the movable spring leading-out piece 23, in the end head of the other end of the movable spring piece 21, and the movable contact 22 is correspondingly matched with a fixed contact 32 of the fixed spring part; the coil of the relay is electrified with forward pulse voltage, the magnetic circuit system works, the pushing card 4 pushes the movable reed 21 in the movable reed part to make the movable contact and the static contact, the relay acts, the coil is electrified with reverse pulse voltage, the magnetic circuit system works, the pushing card 4 pushes the movable reed 21 in the movable reed part to make the movable contact and the static contact disconnected, and the relay is reset; a gasket 5 is also fixedly jointed at the position of one surface of the movable spring piece 21 facing the movable spring leading-out piece 23, which is used for fixing the movable contact 22; the gasket 5 is integrally provided with an elastic piece 51 which extends obliquely towards the direction of the movable spring leading-out piece 23, when the movable contact and the static contact are not disconnected, a preset gap is formed between the free tail end of the elastic piece 51 and the movable spring leading-out piece 23, when the movable contact and the static contact are disconnected, the free tail end of the elastic piece 51 is abutted against the movable spring leading-out piece 23, so that the elastic piece 51 is compressed and deformed to consume the kinetic energy of the disconnection of the movable spring 21, and the shaking phenomenon of the disconnection of the contacts is reduced.
In this embodiment, the tail end 221 of the movable contact 22 passes through the movable spring piece 21 and the spacer 5 on the side of the movable spring piece facing the movable spring piece from the side of the movable spring piece 21 facing away from the movable spring piece 23, and the spacer 5 and the movable spring piece 21 are fixed together by riveting.
In this embodiment, the free end of the elastic piece 51 is provided with a bent portion 511, and is bent in a direction away from the movable spring leading piece 23, and the bent portion 511 of the free end of the elastic piece 51 is abutted against the movable spring leading piece 23 when the movable and stationary contacts are separated.
In this embodiment, the spacer 5 is integrally provided with two elastic pieces 51, and projections of longitudinal center lines of the two elastic pieces 51 on the movable spring 21 are aligned.
In this embodiment, the distance between the free ends of the two elastic pieces 51 gradually increases in the direction toward the movable spring leading-out piece 23; corresponding to two elastic pieces 51 extending obliquely in both side directions.
In this embodiment, a straight line formed by the projection of the center lines of the lengths of the two elastic pieces 51 on the movable spring piece 21 passes through the center of the movable contact 22.
In the present embodiment, a straight line formed by projections of the center lines of the lengths 51 of the two elastic pieces on the movable spring piece 21 is in the width direction of the movable spring piece 21.
In this embodiment, the end of the other end of the movable spring 21 is provided with a U-shaped groove 211 along the length direction of the movable spring, so that the movable spring part in the U-shaped opening is a tongue piece 212 capable of freely swinging relative to the movable spring body, and the movable contact 22 is fixed on the tongue piece 212; the spacer 5 is integrally provided with a stopper 52 that extends across the U-shaped groove in the width direction of the movable spring piece to restrict the movement of the tongue piece 212 in the direction of the stationary contact 32 with respect to the movable spring piece body.
In this embodiment, one side of the gasket 5 is further integrally bent to form a positioning portion 53 for abutting against one side of the width of the movable spring. By setting the orientation structure on the spacer 5, the accuracy of mounting can be ensured.
The utility model discloses an electromagnetic relay capable of reducing contact disconnection jitter, which adopts the technical scheme that a gasket 5 is fixedly connected at the position of one surface of a movable spring piece 21 facing a movable spring lead-out sheet for fixing a movable contact 22; the gasket 5 is integrally provided with an elastic piece 51 extending obliquely towards the movable spring leading-out piece, when the movable and static contacts are not disconnected, a preset gap is formed between the free tail end of the elastic piece 51 and the movable spring leading-out piece 23, and when the movable and static contacts are disconnected, the free tail end of the elastic piece 51 is abutted against the movable spring leading-out piece 23. The utility model discloses a this kind of structure can utilize this flexure strip 51 compression deformation, consumes the kinetic energy of movable contact spring 21 disconnection, thereby reduce the shake phenomenon when the contact disconnection, the utility model discloses because flexure strip 51 is through gasket 5 snap-on movable contact 22, and it is integrative to rivet with movable contact 22, on some component force of flexure strip 51 compression deformation can directly transmit movable contact 22, and movable contact 22's quality is the biggest, and inertia is the biggest, and kinetic energy when moving the spring shake mainly concentrates on movable contact 22, therefore can most effectually restrain the movable contact shake (furthest's reduction contact shake), reduce the moving spring amplitude, avoid the production of secondary or many times arcing.
The utility model discloses an electromagnetic relay that can reduce contact disconnection shake owing to adopted 5 an organic whole of gasket to be equipped with two flexure strips 51, and two flexure strips 51's length direction's projection one-tenth straight line on movable contact spring 21. According to the structure of the utility model, the contact points of the two elastic sheets 51 and the movable spring leading-out sheet 23 are balanced left and right, so that the defect of twisting of the movable spring is avoided; as shown in fig. 13, the two positions beside the moving contact of the movable spring 21 are subjected to the opposite acting forces (i.e. force F1 and force F2) applied to it by the movable spring lead-out piece 23, so that it can perform reciprocating amplitude motion with balanced force, and when there is only one elastic piece 51, when the force is applied on one side, for example, the opposite acting force of force F2 is not applied, the motion of the movable spring will generate twisting.
The utility model discloses an electromagnetic relay that can reduce contact disconnection shake is owing to adopted a straight line that the projection that constitutes the central line of two flexure strips 51's length on the movable contact spring to design into the center through the movable contact. The utility model discloses a this kind of structure can let on elastic sheet compression deformation's a part component transmits movable contact 22 effectively to furthest's reduction contact shake.
The utility model discloses an electromagnetic relay that can reduce contact disconnection shake, owing to adopted and to be equipped with the U type strip groove 211 along the length direction of movable spring piece at the tip of the other end of movable spring piece 21, so that the movable spring piece part in the U type mouth becomes tongue piece 212 that can freely swing relative to the movable spring piece body, movable contact 22 is fixed on tongue piece 212; the spacer 5 is integrally provided with a stopper 52 that extends across the U-shaped groove in the width direction of the movable spring 21. The utility model discloses a this kind of structure, because movable contact 22 is in U type strip groove 211, whole focus all is on tongue piece 212, and consequently inertia is the biggest here, so the shake frequency of tongue piece 212 is big than the shake frequency of movable contact spring body, and the flexure strip 51 directly acts on tongue piece 212, can directly restrain the biggest position of shake frequency.
Example two
Referring to fig. 14, the difference between the electromagnetic relay capable of reducing contact opening jitter according to the present invention and the first embodiment is that both side edges of the gasket 5 are integrally bent to form a positioning portion 53 for abutting against one side of the width of the movable spring.
EXAMPLE III
Referring to fig. 15, the difference between the electromagnetic relay capable of reducing contact opening jitter according to the present invention and the first embodiment is that a straight line formed by projections of the center lines of the lengths of the two elastic pieces 51 on the movable spring piece 21 is in the length direction of the movable spring piece 21.
Example four
Referring to fig. 16 to 17, an electromagnetic relay capable of reducing contact opening jitter according to the present invention is different from the first embodiment in that the distance between the free ends of the two elastic pieces 51 is gradually decreased toward the movable spring leading-out piece 23.
EXAMPLE five
Referring to fig. 18 to 20, an electromagnetic relay capable of reducing contact opening jitter according to the present invention is different from the first embodiment in that two movable contacts 22 are fixed to a tongue piece 212 side by side, and a straight line formed by projection of the center line of the lengths of two elastic pieces 51 on a movable spring piece 21 does not pass through the center of the movable contact 22.
The foregoing is illustrative of the preferred embodiment of the present invention and is not to be construed as limiting the invention in any way. Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The technical solutions disclosed above can be used by those skilled in the art to make many possible variations and modifications, or to modify equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention should fall within the protection scope of the technical solution of the present invention.

Claims (11)

1. An electromagnetic relay capable of reducing contact opening jitter, comprising a movable spring part, a static spring part and a pushing card; the static spring part comprises a rigid static spring piece and a static contact fixed on the static spring piece; the movable spring part comprises a flexible movable spring piece, a movable contact and a rigid movable spring leading-out piece, one end of the movable spring piece is fixed with one end of the movable spring leading-out piece and connected into a V shape, the end head of the other end of the movable spring piece is connected with the pushing clamp, the movable contact is fixed on the surface, back to the movable spring leading-out piece, in the end head of the other end of the movable spring piece, and the movable contact is correspondingly matched with the fixed contact of the fixed spring part; the method is characterized in that: a gasket is fixedly attached to the position, where the movable contact is fixed, of one surface of the movable spring piece, which faces the movable spring leading-out piece; the gasket is integrally provided with an elastic sheet which extends obliquely towards the direction of the movable spring lead-out sheet, a preset gap is formed between the free tail end of the elastic sheet and the movable spring lead-out sheet when the movable contact and the static contact are not disconnected, and the free tail end of the elastic sheet is propped against the movable spring lead-out sheet when the movable contact and the static contact are disconnected, so that the elastic sheet is compressed and deformed to consume the kinetic energy of the movable spring for disconnection, and the shaking phenomenon of the contact during disconnection is reduced.
2. An electromagnetic relay capable of reducing contact opening chatter according to claim 1, wherein: the tail end of the movable contact penetrates through the movable spring piece and the gasket positioned on one surface of the movable spring piece facing the movable spring piece from one surface of the movable spring piece back to the movable spring piece, and the gasket and the movable spring piece are fixed together in a riveting mode.
3. An electromagnetic relay capable of reducing contact opening chatter according to claim 1, wherein: the free tail end of the elastic piece is provided with a bending part and is bent towards the direction departing from the movable spring leading-out piece, and when the movable contact and the static contact are disconnected, the bending part at the free tail end of the elastic piece is propped against the movable spring leading-out piece.
4. An electromagnetic relay capable of reducing contact opening chatter according to claim 1, 2 or 3, characterized in that: the gasket is integrally provided with two elastic pieces, and projections of center lines of the two elastic pieces in the length direction on the movable spring piece form a straight line.
5. An electromagnetic relay capable of reducing contact opening chatter according to claim 4, wherein: the distance between the free ends of the two elastic sheets is gradually increased in the direction towards the movable spring leading-out sheet.
6. An electromagnetic relay capable of reducing contact opening chatter according to claim 4, wherein: the distance between the free ends of the two elastic sheets is gradually reduced in the direction towards the movable spring leading-out sheet.
7. An electromagnetic relay capable of reducing contact opening chatter according to claim 4, wherein: a straight line formed by the projection of the central lines of the lengths of the two elastic pieces on the movable spring piece passes through the center of the movable contact.
8. An electromagnetic relay capable of reducing contact opening chatter according to claim 4, wherein: the projection of the central lines of the lengths of the two elastic pieces on the movable spring piece forms a straight line in the width direction of the movable spring piece.
9. An electromagnetic relay capable of reducing contact opening chatter according to claim 4, wherein: the projection of the central lines of the lengths of the two elastic pieces on the movable spring piece forms a straight line in the length direction of the movable spring piece.
10. An electromagnetic relay capable of reducing contact opening chatter according to claim 1, wherein: the end part of the other end of the movable spring is provided with a U-shaped strip groove along the length direction of the movable spring, so that the movable spring part in the U-shaped opening is a tongue piece which can freely swing relative to the movable spring body, and the movable contact is fixed on the tongue piece; the gasket is integrally provided with a limiting part which stretches across the U-shaped strip groove corresponding to the width direction of the movable spring piece so as to limit the tongue piece to move towards the direction of the static contact relative to the movable spring piece body.
11. An electromagnetic relay capable of reducing contact opening chatter according to claim 10, wherein: one side edge of the gasket is also integrally bent and provided with a positioning part which is used for being attached to one side of the width of the movable spring plate.
CN202020192178.1U 2020-02-21 2020-02-21 Electromagnetic relay capable of reducing contact disconnection jitter Withdrawn - After Issue CN211350492U (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111293002A (en) * 2020-02-21 2020-06-16 厦门宏发电力电器有限公司 Electromagnetic relay capable of reducing contact disconnection jitter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111293002A (en) * 2020-02-21 2020-06-16 厦门宏发电力电器有限公司 Electromagnetic relay capable of reducing contact disconnection jitter
CN111293002B (en) * 2020-02-21 2024-10-18 厦门宏发电力电器有限公司 Electromagnetic relay capable of reducing contact breaking shake

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