CN219658628U - Moving spring part and electromagnetic relay - Google Patents

Abstract

The utility model discloses a movable spring part and an electromagnetic relay, wherein the movable spring part comprises a rigid movable spring, a rigid movable spring leading-out pin, a first flexible conductive piece and at least one movable contact, one end of the rigid movable spring is rotationally arranged, and two ends of the first flexible conductive piece are respectively and electrically connected with the rigid movable spring and the rigid movable spring leading-out pin; the flexible deformation structure is electrically connected to the other end of the rigid movable reed, and the movable contact is arranged on the flexible deformation structure. The flexible deformation structure is arranged, so that a single movable contact or a plurality of movable contacts can be designed according to actual needs, under the condition of a plurality of movable contacts, each movable contact can be effectively contacted due to the flexible deformation effect of the flexible deformation structure, contact temperature rise of the contacts is reduced, and the effects of high current carrying and low heating are achieved.

Description

Moving spring part and electromagnetic relay

Technical Field

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

Background

With the development of products toward miniaturization, a part of electromagnetic relays gradually replace the application of contactors, so that the relays are required to be small in size and higher in load capacity. The high load and low temperature rise are realized in a small volume, the current carrying capacity of the movable spring part is required to be strong enough, the contact resistance is required to be small enough, and the movable spring part has high short-circuit current resistance.

The traditional moving spring part mainly comprises the following two main types:

the main problem of the structure is that the short-circuit current resistance is poor, under high load, the heat is high, the stress of the movable reed is easy to relax and lose elasticity, and therefore the product performance is gradually attenuated.

The other type is a rigid movable reed, namely, a pure copper material with a thicker thickness is used as the movable reed, copper braided wires are generally used for connecting the rigid movable reed and the leading-out sheet (the braided wires are connected with the movable reed in a welding mode, the process is complex), and a counterforce reed is designed on the rigid movable reed to generate counterforce through the counterforce reed. The structure can improve the current-carrying capacity, is approximately U-shaped in whole, and resists the Hall force generated by short-circuit current by utilizing the Lorentz force generated when current flows through a U-shaped loop so as to achieve the capacity of resisting the short-circuit current, but the main problem of the structure is that only a single-acting contact structure can be designed, a plurality of movable contact structures cannot be arranged according to actual needs, so that the current-carrying capacity is limited, and the problems that the contact resistance of a contact is higher and the heating under high load is high exist. This is because the movable contact is directly provided on the rigid movable contact spring, but the rigid movable contact spring does not have deformability, and if a plurality of movable contacts are provided on the rigid movable contact spring, even if the heights of the plurality of movable contacts are uniform, there is a possibility that some of the movable contacts are in good contact and the other movable contacts are in poor contact due to component assembly errors, component manufacturing precision errors, and the like.

Disclosure of Invention

The utility model provides a movable spring part and an electromagnetic relay, which can be provided with a single movable contact or a plurality of movable contacts according to actual needs through structural improvement aiming at the technical problem that the movable spring part with short-circuit current resistance can only be provided with a single movable contact in the prior art.

The technical scheme adopted for solving the technical problems is as follows: a movable spring part comprises a rigid movable spring, a rigid movable spring leading-out pin, a first flexible conductive piece and at least one movable contact, wherein one end of the rigid movable spring is rotationally arranged, so that the rigid movable spring can swing around the rotation axis of the rigid movable spring; two ends of the first flexible conductive piece are respectively and electrically connected with the rigid movable reed and the rigid movable reed leading-out pin; the flexible deformation structure is electrically connected to the other end of the rigid movable reed, and the movable contact is arranged on the flexible deformation structure.

Further, the flexible deformation structure comprises at least one second flexible conductive piece and at least one elastic piece, one end of the second flexible conductive piece and one end of the elastic piece are respectively and electrically connected with the other end of the rigid movable reed, and the other end of the second flexible conductive piece and the other end of the elastic piece are respectively and electrically connected with the movable contact.

Further, the first flexible conductive piece is a first flexible copper foil, and the first flexible copper foil is U-shaped; and/or one end of the rigid movable spring is rotationally connected with one end of the rigid movable spring leading-out pin by adopting a rotating shaft.

Further, two ends of the first flexible copper foil are respectively riveted and fixed with the rigid movable reed and the rigid movable reed leading-out pin; the first flexible copper foil is provided with at least one elongated hole extending in the length direction of the first flexible copper foil.

Further, the second flexible conductive piece is a second flexible copper foil, and the second flexible copper foil and the elastic piece are overlapped together; the contact surface of the movable contact and the elastic sheet are positioned at two sides of the second flexible copper foil in the thickness direction; and/or the elastic sheet is made of stainless steel.

Further, one end of the second flexible copper foil, one end of the elastic piece and the other end of the rigid movable reed are riveted and fixed, and the other end of the second flexible copper foil, the other end of the elastic piece and the movable contact are riveted and fixed.

Further, the number of the movable contacts is a plurality, and the movable contacts are arranged in parallel; the flexible deformation structure is provided with a first bifurcation groove between adjacent movable contacts.

The utility model further provides an electromagnetic relay, which comprises a base, a magnetic circuit part and a pushing card, wherein the magnetic circuit part is arranged on the base, and the electromagnetic relay further comprises at least one movable spring part provided by the utility model, wherein the rigid movable spring leading-out pin is inserted into the base, and the armature part of the magnetic circuit part is connected with the rigid movable spring and/or the flexible deformation structure through the pushing card.

Furthermore, the pushing card is made of thermosetting materials, the armature part is provided with an elastic clamping structure, the elastic clamping structure deforms under the action of stress and is arranged in the pushing card in a penetrating way in a deformation state, and the elastic clamping structure is assembled with the pushing card through restoration after being released.

Further, the elastic clamping structure comprises two clamping arms which are distributed in parallel, the two clamping arms are folded inwards relatively by being stressed and are penetrated in the pushing card in a folded state, and the two clamping arms are assembled with the pushing card by being spread outwards relatively after being released; one end of the pushing card is provided with a clamping hole which is suitable for being clamped and engaged with the armature part; the armature part is provided with a pushing block positioned between the two clamping arms, and a second bifurcation groove is respectively arranged between the two clamping arms and the pushing block; the pushing block penetrates through the clamping hole; and the positions of the clamping holes, which are close to the inner side surfaces of the other ends of the pushing cards, corresponding to the two clamping arms are respectively provided with a yielding groove so as to avoid the clamping arms.

Further, the other end of the rigid movable reed is connected with the pushing card; the pushing clamp is provided with a first clamping groove, the movable spring part is provided with a second clamping groove, and the first clamping groove and the second clamping groove are mutually meshed together; the three sides of the second clamping groove are respectively provided with a turned edge which is bent to one side of the position of the second clamping groove in the thickness direction; the movable spring part comprises a plurality of movable contacts, the movable contacts are arranged in parallel, the pushing card is provided with pushing ribs for pushing the rigid movable reed and/or the flexible deformation structure to act, and the pushing ribs and the movable contacts are positioned on the opposite sides and extend along the arrangement direction of the movable contacts.

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

1. because the utility model also comprises a flexible deformation structure which is electrically connected with one end of the rigid movable reed, and the movable contacts are arranged on the flexible deformation structure, the utility model can design a single movable contact or a plurality of movable contact structures according to actual needs, under the condition of a plurality of movable contacts, each movable contact can be effectively contacted with a corresponding fixed contact due to the flexible deformation effect of the flexible deformation structure, and the plurality of movable contacts can realize a multi-group contact parallel connection mode, thereby reducing contact temperature rise of the contacts and realizing high current carrying and low heating. In addition, the utility model can also utilize the flexible deformation of the flexible deformation structure to improve the electric repulsion resistance and ensure the reliable contact of the contacts, thereby improving the short-circuit current resistance.

2. The flexible deformation structure preferably comprises the second flexible conductive part and the elastic sheet, so that high current carrying can be realized, and heating is reduced, and the problem that the elastic sheet is easy to relax in stress and lose elasticity when heating is high can be avoided.

3. The first flexible conductive piece is preferably a first flexible copper foil, so that the connection between the first flexible conductive piece (namely the first flexible copper foil) and the rigid movable reed leading-out pin can be realized by adopting a riveting process, and a welding process is not required, thereby greatly simplifying the connection process between the first flexible conductive piece and the rigid movable reed leading-out pin.

4. The second flexible conductive piece is preferably a second flexible copper foil, so that the second flexible conductive piece and the elastic piece can be fixedly connected with the rigid movable reed and the movable contact by adopting a riveting process, and a welding process is not required, thereby greatly simplifying the connection process of the second flexible conductive piece and the rigid movable reed and the movable contact. The elastic sheet is preferably made of stainless steel and has the characteristics of good elasticity, low heat productivity, good thermal stability and the like.

5. The push card is made of thermosetting materials, so that the high-temperature resistance of the push card can be improved by utilizing the characteristics of high chemical resistance, heat resistance and difficult deformation of the thermosetting materials, and the influence of deformation and melting of the push card caused by heating under the condition of large current carrying on the normal operation of the relay is avoided. The armature part is provided with the elastic clamping structure which deforms under the action of force and passes through the pushing card in a deformation state without obstruction, and the elastic clamping structure is assembled and combined with the pushing card through restoration after being released, so that the utility model not only can improve the convenience of connecting the armature part with the pushing card made of thermosetting materials, but also can avoid plastic scraps generated by the assembly friction of the armature part and the pushing card, and also overcomes the technical prejudice that the thermosetting materials do not have elastic deformation capability and are not suitable for clamping. Meanwhile, the pushing card can synchronously move with the armature part, so that the consistency of product parameters is prevented from being influenced by the change of pushing points of the pushing card.

6. The elastic clamping structure preferably comprises the two clamping arms, and has the characteristics of simple structure, easy molding, convenient assembly and the like.

7. The arrangement of the pushing block enables the contact area between the armature part and the pushing card to be larger and the matching to be more stable. The setting of groove of stepping down can avoid two card arms and promote when the piece flatness is inconsistent, can influence the promotion piece and promote the card effective contact.

8. The arrangement of the pushing ribs ensures that a plurality of movable contacts on the flexible deformation structure are stressed and balanced, and synchronous action is realized.

The utility model is described in further detail below with reference to the drawings and examples; the movable spring portion and the electromagnetic relay of the present utility model are not limited to the embodiments.

Drawings

FIG. 1 is a schematic perspective view of a moving spring part of the present utility model;

FIG. 2 is a schematic perspective view of a first flexible copper foil of the present utility model;

FIG. 3 is a schematic perspective view of a second flexible copper foil of the present utility model;

FIG. 4 is a schematic perspective view of the elastic sheet of the present utility model;

FIG. 5 is an enlarged schematic view of portion A of FIG. 4;

FIG. 6 is a schematic diagram of a perspective construction of a moving spring portion of the present utility model (without the first flexible copper foil);

fig. 7 is a schematic perspective view (without a housing) of the electromagnetic relay of the present utility model;

fig. 8 is a schematic perspective view of an armature portion of the present utility model;

FIG. 9 is a schematic perspective view of a pusher card of the present utility model;

fig. 10 is a schematic perspective view of the armature portion and the pusher card of the present utility model in a combined state;

FIG. 11 is a top view of the push card and the moving spring portion of the present utility model in a combined state (the moving spring portion is partially embodied);

the spring comprises a rigid movable spring, 11, a first lug, 2, a rigid movable spring leading pin, 21, a second lug, 3, a movable contact, 4, a first flexible copper foil, 41, a strip hole, 5, a second flexible copper foil, 51/61, a first bifurcation groove, 6, an elastic piece, 62, a second clamping groove, 63, a flanging, 7, a rotating shaft, 8, an armature part, 81, an armature, 82, a plastic part, 83, a metal part, 831, a clamping arm, 832, a pushing block, 833, a limiting groove, 834, a second bifurcation groove, 9, a pushing clamp, 91, a clamping hole, 911, a yielding groove, 92, a first clamping groove, 93, a long rod, 931, a pushing rib, 10, a base, 20 and a static spring part.

Detailed Description

In the present disclosure, the terms "first," "second," and the like are used merely to distinguish between similar objects and not necessarily to describe a particular sequence or order, nor are they to be construed as indicating or implying a relative importance. In addition, in the description of the present utility model, unless otherwise indicated, "a plurality" means two or more, and "at least one" means one or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

Referring to fig. 1-5, a movable spring part of the present utility model includes a rigid movable spring 1, a rigid movable spring pin 2, a first flexible conductive member and at least one movable contact 3, wherein one end of the rigid movable spring 1 is rotatably disposed, so that the rigid movable spring 1 can swing around its rotation axis, two ends of the first flexible conductive member are electrically connected with the rigid movable spring 1 and the rigid movable spring pin 2, respectively, and the three form a U-shaped structure. The utility model also comprises a conductive flexible deformation structure which is electrically connected with the other end of the rigid movable reed 1, and the movable contact 3 is arranged on the flexible deformation structure. The number of the movable contacts 3 is plural, and the plurality of movable contacts 3 are arranged in parallel, specifically, the plurality of movable contacts 3 are arranged along the width direction of the rigid movable reed 1. The number of the movable contacts 3 is specifically two, but is not limited thereto.

The flexible deformation structure comprises at least one second flexible conductive piece and at least one elastic piece 6, one end of the second flexible conductive piece and one end of the elastic piece 6 are respectively and electrically connected with the other end of the rigid movable reed 1, and the other end of the second flexible conductive piece and the other end of the elastic piece 6 are respectively and electrically connected with the movable contact 3.

The first flexible conductive element is a first flexible copper foil 4, and the first flexible copper foil 4 is U-shaped. In other embodiments, the first flexible conductive element is a copper wire or an aluminum wire or a braided wire, or the like. The two ends of the first flexible copper foil 4 are respectively riveted and fixed with the rigid movable reed 1 and the rigid movable reed leading-out pin 2, so that a plurality of riveting holes are respectively arranged at the two ends of the first flexible copper foil 4 and at the corresponding positions of the rigid movable reed 1 and the rigid movable reed leading-out pin 2. Therefore, the first flexible conductive piece (namely the first flexible copper foil 4) is connected without adopting a welding process, so that the connection process of the first flexible conductive piece and the rigid movable reed 1 and the rigid movable reed pin 2 is greatly simplified. The first flexible copper foil 4 is provided with at least one elongated hole 41, which elongated hole 41 extends in the length direction of the first flexible copper foil 4. The number of the elongated holes 41 is specifically, but not limited to, one, and both ends of the elongated holes 41 extend toward both ends of the first flexible copper foil 4, respectively. The provision of the elongated holes 41 may enhance the flexibility of the first flexible copper foil 4.

The second flexible conductive element is a second flexible copper foil 5, the second flexible copper foil 5 and the elastic sheet 6 are stacked together, and the number of the second flexible copper foils 5 is multiple, but not limited to this. The contact surface of the movable contact 3 and the elastic piece 6 are located on both sides of the second flexible copper foil 5 in the thickness direction. One end of the second flexible copper foil 5, one end of the elastic piece 6 and the other end of the rigid movable reed 1 are riveted and fixed, and the other end of the second flexible copper foil 5, the other end of the elastic piece 6 and the movable contact 3 are riveted, so that riveting holes are respectively formed at two ends of the second flexible copper foil 5, two ends of the elastic piece 6 and the other end of the rigid movable reed 1. In other embodiments, the second flexible conductive member is a copper wire or an aluminum wire or a braided wire, or the like. The elastic sheet 6 is made of stainless steel and has the characteristics of good elasticity, low heat productivity, good thermal stability and the like.

The flexible deformation structure is provided with a first bifurcation groove between adjacent movable contacts 3, so that the flexible deformation structure is bifurcated to form a plurality of branch parts which are distributed in parallel, and each branch part is provided with one movable contact 3. Since the number of the movable contacts 3 is two, the number of the branch portions is specifically two, but is not limited thereto. The first bifurcated groove is formed by a first bifurcated groove 51 provided in the second flexible copper foil 5 and extending in a direction from the other end to one end thereof, and a first bifurcated groove 61 provided in the elastic sheet 6 and extending in a direction from the other end to one end thereof. The first bifurcation groove is configured to ensure that each movable contact 3 is effectively contacted with the corresponding stationary contact when the heights of the plurality of movable contacts 3 are not consistent.

One end of the rigid movable spring 1 is rotatably connected with one end of the rigid movable spring leading-out pin 2 by adopting a rotating shaft 7, specifically, as shown in fig. 6, two first lugs 11 are arranged on two sides of one end of the rigid movable spring 1, two second lugs 21 are arranged on one end of the rigid movable spring leading-out pin 2, and the two first lugs 11 are positioned between the two second lugs 21 and are connected together by adopting the rotating shaft 7 in a penetrating way. In other embodiments, the rigid movable reed is rotatably connected to the base of the electromagnetic relay, and is electrically connected to the rigid movable reed pin inserted into the base by a flexible conductive member.

According to the movable spring part, the U-shaped structure formed by the rigid movable reed 1, the rigid movable reed leading-out pin 2 and the first flexible copper foil 4 can improve the short-circuit current resistance and the current carrying capacity, and the flexible deformation structure arranged at the other end of the rigid movable reed 1 can be used for arranging one movable contact and arranging a plurality of movable contacts according to actual needs, under the condition of the plurality of movable contacts, each movable contact can be effectively contacted with a corresponding fixed contact due to the flexible deformation effect of the flexible deformation structure, and the plurality of movable contacts can realize a plurality of groups of contacts in parallel connection, so that the contact temperature rise is reduced, and the effects of high current carrying and low heating are realized. The flexible deformation structure can also realize the overtravel of the contact, improve the contact pressure, make the movable contact more reliable with the stationary contact to, when producing great electrodynamic force because of short-circuit current between movable contact and the stationary contact, even the rigidity movable reed is repelled, the flexible deformation structure of bottom also can guarantee the reliable contact of contact through flexible deformation. This is because the flexible deformation structure generates a larger deformation in the contact overstroke state, and can provide a larger contact pressure, thereby being capable of counteracting the electric repulsive force. Therefore, the utility model can improve the electric repulsion resistance, thereby improving the short-circuit current resistance. Specifically, the utility model can realize the current carrying capacity of 180A of 2 independent contact sets respectively, and can meet the short-circuit current resistance capacity of more than 5 kA.

Referring to fig. 1 to 11, an electromagnetic relay of the present utility model includes a base 10, a magnetic circuit portion, a stationary spring portion 20, a housing (not shown) and a push card 9, wherein the magnetic circuit portion and the stationary spring portion 20 are respectively disposed on the base 10. The utility model further comprises at least one movable spring part, wherein the rigid movable spring leading-out pin 2 is inserted into the base 10, the armature part 8 of the magnetic circuit part is connected with the rigid movable spring 1 and/or the flexible deformation structure through a pushing card 9, specifically, one end of the pushing card 9 is connected with the armature part 8 of the magnetic circuit part, and the other end of the pushing card 9 is connected with the rigid movable spring 1 and/or the flexible deformation structure. The bottom end of the shell is connected with the base 10, and the magnetic circuit part, the static spring part 20, the pushing card 9 and the moving spring part are contained in the shell. The number of the static spring parts 20 and the moving spring parts is two, but not limited to this, and the two moving spring parts are arranged in parallel and are respectively matched with the two static spring parts 20 one by one.

The push card 9 is made of thermosetting materials, the armature part 8 is provided with an elastic clamping structure which deforms under force and passes through the push card 9 in a non-blocking manner in a deformed state, and the elastic clamping structure is released and then is clamped and combined with the push card 9 through restoration. The elastic clamping structure specifically comprises two clamping arms 831 which are distributed in parallel, the two clamping arms 831 are folded inwards relatively by the stress and pass through the pushing card 9 in a folded state, and the two clamping arms 831 are released and then are clamped and assembled with the pushing card 9 by being spread outwards relatively. As shown in fig. 8, the armature portion 8 specifically includes an armature 81, a plastic member 82, and a metal member 83, but is not limited thereto, and in other embodiments, the armature portion is integrally an armature. The armature 81 and the metal piece 83 are fixedly connected or insert-molded together through the plastic piece 82, and the armature 81 and the metal piece 83 are separated by the plastic piece 82. In this way, the creepage distance between the magnetic path portion and the contact portion (including the moving spring portion and the static spring portion) of the relay can be increased. The metal member 83 may be replaced by a part made of other materials with better rigidity and high temperature resistance. The armature portion 8 has an L-shape, but is not limited thereto. The armature portion 8 is provided with a pushing block 832 located between the two clamping arms 831, and the armature portion 8 is provided with second branch grooves 834 between the two clamping arms 831 and the pushing block 832, respectively. Specifically, the pushing block 832 and the clamping arm 831 are respectively disposed on the metal member 83, and the metal member 83 forms the two clamping arms 831 and the pushing block 832 by providing two second bifurcation slots 834. And a limiting groove 833 is respectively arranged at the opposite outer sides of the tail ends of the two clamping arms 831, and the limiting groove 833 penetrates through the two sides of the metal piece 83 in the thickness direction.

As shown in fig. 9, one end of the push card 9 is provided with a card hole 91 adapted to be engaged with the armature portion 8, and the card hole 91 is elongated and extends along the arrangement direction of the two card arms 831. The distance between the two opposite inner side surfaces of the limiting groove 833 is slightly larger than the depth of the clamping hole 91, so that after the two clamping arms 831 are relatively and outwards opened, the two limiting grooves 833 are respectively engaged with the two ends of the clamping hole 91, and the effects of limiting and preventing separation are achieved. The pushing block 832 is also disposed through the card hole 91, and the armature portion 8 drives the pushing card 9 to move through the pushing block 832. The inner side of the clamping hole 91 near the other end of the pushing card 9 is provided with a yielding groove 911 corresponding to the two clamping arms 831, so as to avoid the clamping arms 831, and thus, when the flatness of the two clamping arms 831 and the flatness of the pushing block 832 are inconsistent, the pushing block 832 and the pushing card 9 are prevented from being effectively contacted.

The other end of the rigid movable reed 1 is connected with the pushing card 9, specifically, the rigid movable reed 1 and the flexible deformation structure are connected with each other at a position which is not less than that of the pushing card, so that the rotating power arm of the rigid movable reed 1 and the force arm of the overtravel of the contact are both longer, and the pushing card 9 is pushed more labor-saving. The other end of the pushing card 9 is provided with a first clamping groove 92, the corresponding part of the movable spring part is provided with a second clamping groove 62, and the first clamping groove 92 and the second clamping groove 62 are mutually meshed together. Since the number of the moving spring portions is two, the number of the first clamping grooves 92 is also two, and the two first clamping grooves 92 are respectively in a U shape and are arranged opposite to each other.

The second clamping groove 62 is specifically formed in the elastic piece 6 and penetrates through the rigid movable reed 1 and the second flexible copper foil 5. The three sides of the second clamping groove 62 are respectively provided with a flange 63 bent to one side of the elastic sheet 6 in the thickness direction, as shown in fig. 4 and 5, the root parts of the flanges 63 are respectively in rounded transition, so that the movable spring part can be prevented from wiping out plastic scraps on the pushing card 9.

The other end of the push card 9 is provided with a push rib 931 for pushing the rigid movable reed 1 and/or the flexible deformation structure to act, the push rib 931 and the movable contact 3 are positioned on the opposite side and extend along the arrangement direction of the plurality of movable contacts 3, so that the utility model can ensure the stress balance of the plurality of movable contacts 3 on the flexible deformation structure and realize synchronous action. The pushing ribs 931 are disposed in parallel with the first clamping grooves 92. Specifically, the other end of the push card 9 is provided with a long rod 93 extending outwards from the notch of the first clamping groove 92 on the side of the first clamping groove 92 near the clamping hole 91, the side of the long rod 93 facing the moving spring part is provided with the push rib 931 extending along the length direction of the long rod, and after the push card 9 and the moving spring part are assembled, the push rib 931 is in contact fit with the middle position of the flexible deformation structure in the width direction, as shown in fig. 11.

The utility model relates to an electromagnetic relay, which comprises an armature part 8 and a push card 9, wherein the assembly method comprises the following steps: the two clamping arms 831 of the armature part 8 are clamped by a tool, so that the two clamping arms 831 are folded inwards in opposite directions to form an inner eight shape, the tail ends of the two clamping arms 831 and the tail ends of the pushing blocks 832 pass through the clamping holes 91 of the pushing clamps 9, and then the two clamping arms 831 of the armature part 8 are released, so that the two clamping arms 831 are restored outwards in opposite directions to be opened, and the limiting grooves 833 on the two clamping arms 831 are respectively meshed with the two ends of the clamping holes 91, so that the pushing clamps 9 are stably and firmly connected with the armature part 8, and plastic scraps cannot be scraped in the installation process. Meanwhile, the push card 9 can synchronously move with the armature part 8, so that the consistency of product parameters is prevented from being influenced by the change of push points of the push card 9.

According to the electromagnetic relay, the push card 9 is made of the thermosetting material, so that the high-temperature resistance of the push card 9 can be improved by utilizing the characteristics of high chemical resistance, heat resistance and difficult deformation of the thermosetting material, and the push card 9 is prevented from being heated and melted under the condition of large current carrying to influence the normal operation of the relay. The armature part 8 and the pushing card 9 are assembled in the mode, so that the convenience of connection of the armature part 8 and the pushing card 9 made of thermosetting materials can be improved, and plastic scraps generated by friction between the armature part 8 and the pushing card 9 due to assembly can be avoided.

The electromagnetic relay of the present utility model is related to the structure and principle of the moving spring portion, please refer to the description portion above, and the details are not repeated here.

The moving spring part and the electromagnetic relay of the utility model have no related parts (such as other structures of the magnetic circuit part and the like) which are the same as or can be realized by adopting the prior art.

The above embodiment is only used for further illustrating a moving spring portion and an electromagnetic relay of the present utility model, but the present utility model is not limited to the embodiment, and any simple modification, equivalent variation and modification of the above embodiment according to the technical substance of the present utility model falls within the protection scope of the technical solution of the present utility model.

Claims (11)

1. A movable spring part comprises a rigid movable spring, a rigid movable spring leading-out pin, a first flexible conductive piece and at least one movable contact, wherein one end of the rigid movable spring is rotationally arranged, so that the rigid movable spring can swing around the rotation axis of the rigid movable spring; two ends of the first flexible conductive piece are respectively and electrically connected with the rigid movable reed and the rigid movable reed leading-out pin; the method is characterized in that: the flexible deformation structure is electrically connected to the other end of the rigid movable reed, and the movable contact is arranged on the flexible deformation structure.

2. The moving spring portion according to claim 1, wherein: the flexible deformation structure comprises at least one second flexible conductive piece and at least one elastic piece, one end of the second flexible conductive piece and one end of the elastic piece are respectively and electrically connected with the other end of the rigid movable reed, and the other end of the second flexible conductive piece and the other end of the elastic piece are respectively and electrically connected with the movable contact.

3. The moving spring portion according to claim 1, wherein: the first flexible conductive piece is a first flexible copper foil which is U-shaped; and/or one end of the rigid movable spring is rotationally connected with one end of the rigid movable spring leading-out pin by adopting a rotating shaft.

4. A moving spring portion according to claim 3, wherein: the two ends of the first flexible copper foil are respectively riveted and fixed with the rigid movable reed and the rigid movable reed leading-out pin; the first flexible copper foil is provided with at least one elongated hole extending in the length direction of the first flexible copper foil.

5. The moving spring portion according to claim 2, wherein: the second flexible conductive piece is a second flexible copper foil, and the second flexible copper foil and the elastic piece are overlapped together; the contact surface of the movable contact and the elastic sheet are positioned at two sides of the second flexible copper foil in the thickness direction; and/or the elastic sheet is made of stainless steel.

6. The moving spring portion according to claim 5, wherein: one end of the second flexible copper foil, one end of the elastic sheet and the other end of the rigid movable reed are riveted and fixed, and the other end of the second flexible copper foil, the other end of the elastic sheet and the movable contact are riveted and fixed.

7. The moving spring portion according to any one of claims 1 to 5, characterized in that: the number of the movable contacts is multiple, and the movable contacts are arranged in parallel; the flexible deformation structure is provided with a first bifurcation groove between adjacent movable contacts.

8. An electromagnetic relay comprising a magnetic circuit portion and a pusher card, characterized in that: further comprising at least one moving spring portion according to any one of claims 1-7, the armature portion of the magnetic circuit portion being connected to the rigid moving spring and/or the flexible deformation structure by a push clip.

9. The electromagnetic relay according to claim 8, wherein: the push card is made of thermosetting materials, the armature part is provided with an elastic clamping structure which deforms under the action of force and passes through the push card in a deformation state without obstruction, and the elastic clamping structure is assembled with the push card through restoration after being released.

10. The electromagnetic relay according to claim 9, wherein: the elastic clamping structure comprises two clamping arms which are distributed in parallel, the two clamping arms are folded inwards relatively by being stressed and pass through the pushing card in a folded state, and the two clamping arms are unfolded relatively outwards to be assembled and combined with the pushing card after being released; one end of the pushing card is provided with a clamping hole which is suitable for being clamped and engaged with the armature part; the armature part is provided with a pushing block positioned between the two clamping arms, and a second bifurcation groove is respectively arranged between the two clamping arms and the pushing block; the pushing block penetrates through the clamping hole; and the positions of the clamping holes, which are close to the inner side surfaces of the other ends of the pushing cards, corresponding to the two clamping arms are respectively provided with a yielding groove so as to avoid the clamping arms.

11. The electromagnetic relay according to any one of claims 8-10, wherein: the other end of the rigid movable reed is connected with the pushing card; the pushing clamp is provided with a first clamping groove, the movable spring part is provided with a second clamping groove, and the first clamping groove and the second clamping groove are mutually meshed together; the three sides of the second clamping groove are respectively provided with a turned edge which is bent to one side of the position of the second clamping groove in the thickness direction; the movable spring part comprises a plurality of movable contacts, the movable contacts are arranged in parallel, the pushing card is provided with pushing ribs for pushing the rigid movable reed and/or the flexible deformation structure to act, and the pushing ribs and the movable contacts are positioned on the opposite sides and extend along the arrangement direction of the movable contacts.