A high current low height relay

Abstract

The invention discloses a high-current low-height relay, comprising an elastic reset member, a movable spring part and an armature; the movable spring part comprises a bridge movable spring piece and four movable contacts fixed at both ends of the bridge movable spring piece; the middle of the bridge movable spring piece is fixed on the armature and the movable contacts at both ends of the bridge movable spring piece are located on both sides of the armature; a first slit is also provided between the two movable contacts at the same end of the bridge movable spring piece, one end of the first slit passes through the bridge movable spring piece, and the other end of the first slit extends toward the middle of the bridge movable spring piece, so that the two movable contacts at the same end of the bridge movable spring piece are in parallel relationship; the two first slits extending toward the middle from both ends of the bridge movable spring piece do not intersect in the middle, so that the movable contacts at both ends of the bridge movable spring piece are connected in series. The invention can effectively reduce the height of the relay on the basis of ensuring that the relay has certain performance indicators, and can also solve the temperature rise problem caused by the small volume.

Description

Technical Field

[0001] The invention relates to the technical field of relays, in particular to a high-current low-height relay. Background Art

[0002] A relay is an electronic control device that has a control system (also called an input circuit) and a controlled system (also called an output circuit). It is usually used in automatic control circuits. It is actually an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays the role of automatic adjustment, safety protection, and circuit conversion in the circuit. Since the control function of relays has been widely used in various fields, with the continuous expansion of the application field of relays, the requirements for relays are also getting higher and higher. A relay in the prior art, due to the limitation of installation space, requires the volume of the relay to be reduced as much as possible on the basis of ensuring that the relay has certain performance indicators, especially the height of the relay. In order to reduce the height of the relay, a relay in the prior art sets the magnetic circuit part in a horizontal position and adopts a snap-on magnetic circuit structure. The movable spring armature component of this relay includes a movable spring and an armature. The movable spring is bent into an L-shape. One side (horizontal side) of the L-shape of the movable spring is used to be fixed to the yoke, and the other side (vertical side) of the L-shape of the movable spring is fixed to the armature by riveting, and the head of the armature is matched with the blade of the yoke. The end of the other side of the L-shape of the movable spring exceeds the tail end of the armature, and the exceeding part of the end of the other side of the L-shape of the movable spring is usually a fixed movable contact. In this way, in the height direction of the relay, at least the height direction dimension of the armature and the height direction dimension of the movable contact are included, which makes it difficult to meet the low height requirement of the relay; and when this small-volume relay is used in a large current environment, there is a problem of temperature rise and inability to dissipate heat as quickly as possible. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a high-current, low-height relay. Through structural improvement, the height of the relay can be effectively reduced while ensuring that the relay has certain performance indicators, and the temperature rise problem caused by the small size can be solved.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a large current low height relay, including a snap-on movable spring armature component; the snap-on movable spring armature component includes an elastic reset member, a movable spring part and an armature; the elastic reset member is connected between the armature and the yoke of the relay; the movable spring part includes a bridge movable spring piece and four movable contacts, the four movable contacts are respectively fixed at the two ends of the bridge movable spring piece and are located in the same straight line; the middle of the bridge movable spring piece is fixed on the armature so that the movable contacts at the two ends of the bridge movable spring piece are located on both sides of the armature; a first slit is also provided between the two movable contacts at the same end of the bridge movable spring piece, one end of the first slit passes through the bridge movable spring piece, and the other end of the first slit extends toward the middle of the bridge movable spring piece, so that the two movable contacts at the same end of the bridge movable spring piece are in a parallel relationship; the two first slits extending from the two ends of the bridge movable spring piece to the middle do not intersect in the middle, so that the movable contacts at the two ends of the bridge movable spring piece are connected in series.

[0005] The four moving contacts are distributed in the same straight line.

[0006] The elastic reset member is a reset spring, which is bent into an L-shape. One side of the L-shape of the reset spring is provided with a yoke connecting portion for fixing to the yoke of the relay. The other side of the L-shape of the reset spring is bent downward relative to the one side of the L-shape of the reset spring. The other side of the L-shape of the reset spring is fixed to the armature and the head of the armature is fitted into the cutting edge of the yoke of the relay.

[0007] One end of the first slit extends upward from the bottom end of the bridge-type dynamic spring piece in a manner perpendicular to the same straight line, and the other end of the first slit extends from the middle of the bridge-type dynamic spring piece toward the side of the bridge-type dynamic spring piece, and the upwardly extending portion of one end of the first slit is bent and intersected with the sidewardly extending portion of the other end of the first slit.

[0008] In the bridge-type moving spring, the first slit divides the bridge-type moving spring into an inner moving spring and an outer moving spring, and the free ends of the inner moving spring and the outer moving spring are respectively provided with moving contact fixing parts; the width of the moving spring part between the moving contact fixing part of the outer moving spring and the root of the outer moving spring is greater than the width of the moving spring part between the moving contact fixing part of the inner moving spring and the root of the inner moving spring.

[0009] A second slit is also provided on the moving spring portion between the moving contact fixing portion of the inner moving spring and the root of the inner moving spring.

[0010] The other side of the L-shape of the reset spring is between the bridge movable spring and the armature; the bridge movable spring is provided with bending parts on the outer sides of the two sides corresponding to the width of the corresponding part of the other side of the L-shape of the reset spring, and the bending direction of the bending parts is toward the armature.

[0011] The middle of the bridge-type movable spring is fixed to the armature by riveting; a first rivet joint matching with the corresponding position of the armature is provided at a position close to the root of the outer movable spring of the bridge-type movable spring; a second rivet joint matching with the corresponding position of the armature is provided at an outer position of the bent portion of the outer movable spring of the bridge-type movable spring.

[0012] The bridge-type moving spring is composed of a plurality of springs stacked together; the bending parts of the plurality of springs are staggered, and the distance between two bending parts of the plurality of springs gradually increases in the direction away from the armature, thereby forming a certain gap between the springs at the position corresponding to the bending part.

[0013] In the armature, convex buds are respectively provided at the first rivet joint and the second rivet joint corresponding to the bridge-type movable spring leaf; in the multiple spring leaves, rivet holes are respectively provided at the first rivet joint, and the rivet holes of the multiple spring leaves are respectively matched with the corresponding convex buds of the armature and fixed by riveting; in a spring leaf closest to the armature, a rivet hole is provided at the second rivet joint, and the rivet hole of the spring leaf closest to the armature is matched with the corresponding convex bud of the armature and fixed by riveting.

[0014] Both ends of the head of the armature are respectively provided with hooks for hanging on the yoke of the relay outside the two side edges corresponding to the width of the reset spring.

[0015] In one side of the L-shape of the reset spring, a middle slot is provided extending from the bend to the yoke connection part, and the middle slot gradually increases from the bend to the yoke connection part, so that the reset spring body parts on both sides of the middle slot gradually decrease from the bend to the yoke connection part.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The present invention adopts the method of fixing four moving contacts at both ends of the bridge moving spring piece, and the four moving contacts are in the same straight line; the middle of the bridge moving spring piece is fixed on the armature and the moving contacts at both ends of the bridge moving spring piece are located on both sides of the armature; a first slit is further provided between the two moving contacts at the same end of the bridge moving spring piece, one end of the first slit passes through the bridge moving spring piece, and the other end of the first slit extends toward the middle of the bridge moving spring piece, so that the two moving contacts at the same end of the bridge moving spring piece are in parallel relationship; the two first slits extending from the two ends of the bridge moving spring piece to the middle do not intersect in the middle, so that the moving contacts at the two ends of the bridge moving spring piece are connected in series. The structure of the present invention can reduce the height of the relay by disposing the moving contacts at both ends of the bridge-type moving spring piece on both sides of the armature; the two contacts on one side of the bridge-type moving spring piece are connected in parallel to play a shunting role and reduce the contact resistance at the same time; the contacts on the left and right sides of the bridge-type moving spring piece are connected in series, and the equivalent contact resistance of the four contacts is equal to the contact resistance of one contact; the two contacts on one side are connected in parallel to achieve shunting, reduce temperature rise, and thus reduce contact loss and extend contact life; it is beneficial to arc breaking, so the contact gap can be reduced, the coil suction requirement is reduced, and thus the coil ampere-turn value can be reduced.

[0018] 2. The present invention adopts the method of designing the width of the moving spring part between the moving contact fixing part of the outer moving spring and the root of the outer moving spring to be greater than the width of the moving spring part between the moving contact fixing part of the inner moving spring and the root of the inner moving spring, and also provides a second slit in the moving spring part between the moving contact fixing part of the inner moving spring and the root of the inner moving spring, and provides the riveted fixing part of the bridge moving spring and the armature on the outer moving spring. This structure of the present invention reduces the force arm of the moving contact by adding a rivet to the outer moving spring, and makes the width of the outer moving spring greater than that of the inner moving spring, thereby improving the rigidity of the outer moving spring; the width of the inner moving spring is designed to be smaller than that of the outer moving spring, and the second slit is provided, thereby improving the flexibility of the inner moving spring; thereby ensuring the balance of pressure of the two inner moving contacts at the same end of the bridge moving spring.

[0019] 3. The present invention adopts the method of providing bending parts on the outer sides of the two sides of the width of the corresponding part of the other side of the L-shaped reset spring, and the bending direction of the bending parts is toward the armature. In this structure of the present invention, the two sides of the movable spring are bent, which can avoid contact adhesion under high current conditions compared to the existing conductive sheet, and is easy to disconnect. The distance between the two bends of the movable spring is greater than the corresponding width of the reset spring, which can also solve the deformation problem caused by the spring during the riveting process and ensure product consistency.

[0020] 4. The present invention adopts a bridge-type dynamic spring composed of multiple springs stacked together, and the bent parts of multiple springs are staggered. This structure of the present invention improves the load capacity through multiple springs, and staggered bending of multiple springs can avoid rebound due to heavy load and strong magnetic attraction; at the same time, it is convenient to adjust the contact pressure; multiple springs generate a lot of heat due to heavy load, and gaps are formed by staggered bending of multiple springs, which can reduce the heat of the springs through convection, thereby solving the temperature rise problem.

[0021] 5. The present invention adopts a structure in which hooks are provided at both ends of the armature head corresponding to the width of the reset spring for hooking on the yoke of the relay. This structure of the present invention can improve the impact resistance of the relay and prevent the armature from rotating.

[0022] 6. The present invention adopts a middle slot extending from the bend to the yoke connection part in one side of the L-shaped reset spring, and the middle slot gradually increases from the bend to the yoke connection part, so that the reset spring body parts on both sides of the middle slot gradually decrease from the bend to the yoke connection part. This structure of the present invention can not only ensure the anti-drop strength of the relay, but also improve the flexibility of the spring and reduce the reaction force.

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments; however, the high-current low-height relay of the present invention is not limited to the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of the three-dimensional structure of an embodiment of the present invention (excluding the housing);

[0025] Figure 2 yes Figure 1 A magnified schematic diagram of part A in FIG.

[0026] Figure 3 is a schematic diagram of the three-dimensional structure of an embodiment of the present invention (without the housing and turned front and back);

[0027] Figure 4 1 is a schematic diagram of the three-dimensional structure of a snap-on movable spring armature component according to an embodiment of the present invention (without the movable contact);

[0028] Figure 5 1 is a schematic diagram of the three-dimensional structure of the snap-fit ​​type movable spring armature component of an embodiment of the present invention (without the movable contact and flipped front and back);

[0029] Figure 6 It is a partial structural exploded schematic diagram of a snap-on movable spring armature component of an embodiment of the present invention;

[0030] Figure 71 is a partial structural exploded schematic diagram of a snap-fit ​​movable spring armature component of an embodiment of the present invention (rotated at one angle);

[0031] Figure 8 is a top view of a snap-on movable spring armature component of an embodiment of the present invention;

[0032] Fig. 9 is a schematic diagram of a snap-fit ​​movable spring armature component to be installed into a spring leaf closest to the armature according to an embodiment of the present invention;

[0033] Fig.10 Schematic diagram of a snap-fit ​​movable spring armature component after being installed into a spring leaf closest to the armature according to an embodiment of the present invention;

[0034] Fig.11 is a schematic diagram of a snap-fit ​​movable spring armature component of an embodiment of the present invention to be installed with two other springs;

[0035] Fig.12 2 is a schematic diagram of the three-dimensional structure of a spring leaf closest to the armature of a snap-fit ​​movable spring armature component according to an embodiment of the present invention;

[0036] Fig.13 It is a schematic diagram of the three-dimensional structure of the other two spring leaves of the snap-fit ​​movable spring armature component of the embodiment of the present invention. DETAILED DESCRIPTION

[0037] Example

[0038] See also Figures 1 to 13 As shown, a high-current low-height relay of the present invention comprises a snap-on movable spring armature component; the snap-on movable spring armature component comprises an elastic reset member 1, a movable spring portion 2 and an armature 3; the elastic reset member 1 is connected between the armature 1 and the yoke 4 of the relay; the movable spring portion 2 comprises a bridge movable spring piece 21 and four movable contacts 22, the four movable contacts 22 are respectively fixed at the two ends of the bridge movable spring piece 21 and are in the same straight line; the middle of the bridge movable spring piece 21 is fixed on the armature 3 and the movable contacts at the two ends of the bridge movable spring piece 1 are ... The contacts 11 are located on both sides of the armature 3; a first slit 211 is provided between the two moving contacts 22 at the same end of the bridge moving spring piece 21, one end of the first slit 211 passes through the bridge moving spring piece 21, and the other end of the first slit 211 extends toward the middle of the bridge moving spring piece 21, so that the two moving contacts 22 at the same end of the bridge moving spring piece 21 are in parallel relationship; the two first slits 211 extending toward the middle from the two ends of the bridge moving spring piece 21 do not intersect in the middle, so that the moving contacts 22 at the two ends of the bridge moving spring piece 21 are connected in series.

[0039] In this embodiment, the elastic reset member 1 is a reset spring, which is bent into an L-shaped shape by a bending portion 11. One side 12 of the L-shaped reset spring 1 is provided with a yoke connecting portion 121 for fixing with the yoke of the relay, and the yoke connecting portion 121 of the L-shaped reset spring 1 is provided with a riveting hole. The other side 13 of the L-shaped reset spring 1 is bent downward relative to the one side 12 of the L-shaped reset spring 1. The other side 13 of the L-shaped reset spring 1 is fixed with the armature 3 and the head 31 of the armature 3 is matched with the knife edge of the yoke 4 of the relay. When the relay is working, the armature 3 is attracted to the core pole surface of the relay, and the reset spring 1 is in a compressed state. When the relay stops working, the reset spring 1 drives the armature to reset. The elastic reset member of the present invention can also be a tension spring, one end of which is connected to the yoke iron, and the other end of the tension spring is connected to the armature. When the relay is working, the armature is attracted to the iron core pole surface of the relay, and the tension spring is in a stretched state. When the relay stops working, the tension spring drives the armature to reset.

[0040] In this embodiment, one end of the first slit 211 extends upward from the bottom end of the bridge-type dynamic spring piece 21 in a manner perpendicular to the same straight line, and the other end of the first slit 211 extends from the middle of the bridge-type dynamic spring piece 21 toward the side of the bridge-type dynamic spring piece 21, and the upwardly extending portion of one end of the first slit 211 is bent and intersected with the sidewardly extending portion of the other end of the first slit 211.

[0041] In this embodiment, in the bridge-type moving spring piece 21, the first slit 211 divides the bridge-type moving spring piece 21 into an inner moving spring piece 212 and an outer moving spring piece 213, and the free ends of the inner moving spring piece 212 and the outer moving spring piece 213 are respectively provided with moving contact fixing parts, and the moving contact fixing parts are riveted holes; the width of the moving spring piece part 215 between the moving contact fixing part of the outer moving spring piece 213 and the root of the outer moving spring piece is greater than the width of the moving spring piece part 214 between the moving contact fixing part of the inner moving spring piece 212 and the root of the inner moving spring piece.

[0042] In this embodiment, a second slit 216 is further provided in the movable spring portion 214 between the movable contact fixing portion of the inner movable spring 212 and the root of the inner movable spring.

[0043] In this embodiment, the other side 13 of the L-shape of the reset spring 1 is located between the bridge movable spring 21 and the armature 3; the bridge movable spring 21 is provided with bending portions 23 on the outer sides of both sides corresponding to the width of the corresponding part of the other side 13 of the L-shape of the reset spring 1, and the bending direction of the bending portion 23 is toward the armature.

[0044] In this embodiment, the middle of the bridge-type dynamic spring 21 is fixed to the armature 3 by riveting; the outer dynamic spring 213 of the bridge-type dynamic spring 21 is provided with a first rivet near the root thereof, which matches the corresponding position of the armature 3; the outer side of the bent portion 23 of the outer dynamic spring 213 of the bridge-type dynamic spring 21 is provided with a second rivet on the outer side thereof, which matches the corresponding position of the armature.

[0045] In this embodiment, the bridge-type movable spring 21 is composed of three stacked springs 241, 242, and 243, and the springs 241, 242, and 243 are each provided with a first slit 211 and a second slit 216; the bending portions of the three springs 241, 242, and 243 are staggered, and the distance between the two bending portions of the three springs gradually increases in the direction away from the armature, thereby forming a certain gap between the springs at the position corresponding to the bending portion to facilitate heat dissipation. The shape of the bent portion 23 is roughly Z-shaped, the reed 241 is closest to the reset reed 1, the reed 241, the reed 242 and the reed 243 are stacked in sequence, the two bent portions 23 of the reed 241 are arranged on the outside of the width of the corresponding part of the other side 13 of the L-shaped reset reed 1, and the bend of the bent portion 23 of the reed 241 is close to the armature 3; the reed 242 is stacked outside the reed 241, and the two bent portions 23 of the reed 242 are arranged on the outside of the reed 241. The distance between the two bent portions 23 of the reed 241 is greater than the distance between the two bent portions 23 of the reed 241, and the bent portion of the bent portion 23 of the reed 242 is in contact with the reed 241; the reed 243 is stacked on the outside of the reed 242, and the distance between the two bent portions 23 of the reed 243 is greater than the distance between the two bent portions 23 of the reed 242, and the bent portion of the bent portion 23 of the reed 243 is in contact with the reed 242; in this way, a gap 40 is formed at the position of the bent portion 23.

[0046] In this embodiment, the armature 3 is provided with convex buds 32 at the first rivet joint and the second rivet joint corresponding to the bridge-type movable spring piece; the three spring pieces 241, 242, 243 are provided with rivet holes 217 at the first rivet joint, and the rivet holes 217 of the three spring pieces are respectively matched with the corresponding convex buds 23 (convex buds on the inner side) of the armature 3 and fixed by riveting; the spring piece 241 of the three spring pieces closest to the armature is provided with a rivet hole 217 at the second rivet joint. A rivet hole 218 is provided, and the rivet hole 218 of a reed 241 of the three reeds closest to the armature cooperates with the corresponding bulge (the bulge on the outside) of the armature and is fixed by riveting; the bent portion 23 of the reed 242 corresponds to the second riveted position, so that the bent portion 23 of the reed 242 and the reed 241 form a gap 40 to make way for the rivet position of the rivet hole 218 of the reed 241 and the corresponding bulge (the bulge on the outside) of the armature. Since the reed 242 and the reed 243 are not riveted at the second riveting joint, when the bridge movable reed and the armature are riveted, the second riveting joint is first riveted (the first riveting) and then the first riveting joint is riveted (the second riveting). A rivet hole 14 is provided on the other side 13 of the L-shape of the reset reed 1. When the first riveting joint is riveted (the second riveting), the reset reed 1 is also riveted together, that is, the rivet hole 217 of the bridge movable reed 21 and the rivet hole 14 on the other side 13 of the L-shape of the reset reed 1 are respectively matched at the corresponding bulge 32 (the bulge on the inner side) of the armature 3, and the armature 3, the reset reed 1 and the bridge movable reed 21 are fixed together by riveting.

[0047] In this embodiment, hooks 33 for hooking on the yoke of the relay are respectively provided at both ends of the head of the armature 3 outside the two side edges corresponding to the width of the reset spring 1.

[0048] In this embodiment, a middle slot 15 is provided in one side 12 of the L-shape of the reset spring 1, extending from the bending portion 11 toward the yoke connecting portion 121, and the middle slot 15 gradually increases from the bending portion 11 toward the yoke connecting portion 121, so that the reset spring body portion 16 on both sides of the middle slot gradually decreases from the bending portion 11 toward the yoke connecting portion 121.

[0049] A high-current low-height relay of the present invention adopts four moving contacts 22 fixed at both ends of a bridge-type moving reed 21, and the four moving contacts 22 are in the same straight line; the middle of the bridge-type moving reed 21 is fixed on the armature 3 so that the moving contacts 22 at both ends of the bridge-type moving reed 21 are located on both sides of the armature 21; a first slit 211 is further provided between the two moving contacts 22 at the same end of the bridge-type moving reed 21, one end of the first slit 211 passes through the bridge-type moving reed 21, and the other end of the first slit 211 extends toward the middle of the bridge-type moving reed 21, so that the two moving contacts 22 at the same end of the bridge-type moving reed 21 are in parallel relationship; the two first slits 211 extending toward the middle from both ends of the bridge-type moving reed 21 do not intersect in the middle, so that the moving contacts 22 at both ends of the bridge-type moving reed 21 are connected in series. The structure of the present invention can reduce the height of the relay by placing the moving contacts 22 at both ends of the bridge-type moving spring piece 21 on both sides of the armature 3; the two contacts on one side of the bridge-type moving spring piece 21 are connected in parallel to play a shunting role and reduce the contact resistance of the contacts at the same time; the contacts on the left and right sides of the bridge-type moving spring piece 21 are connected in series, and the equivalent contact resistance of the four contacts 22 is the contact resistance of one contact; the two contacts on one side are connected in parallel to achieve shunting, reduce temperature rise, and thus reduce contact loss and extend contact life; it is beneficial to arc breaking, so the contact gap can be reduced, the coil suction requirement is reduced, and the coil ampere-turn value can be reduced.

[0050] A high-current, low-height relay of the present invention adopts a method in which the width of a moving reed portion 215 between a moving contact fixing portion of an outer moving reed 213 and a root of the outer moving reed is designed to be greater than the width of a moving reed portion 214 between a moving contact fixing portion of an inner moving reed 212 and a root of the inner moving reed, and a second slit 216 is provided in the moving reed portion 214 between the moving contact fixing portion of the inner moving reed 212 and the root of the inner moving reed, and a rivet fixing portion of the bridge-type moving reed 21 and the armature 3 is provided on the outer moving reed 213. This structure of the present invention reduces the force arm of the moving contact by adding a riveted portion to the outer moving spring piece 213, and makes the width of the outer moving spring piece 213 larger than the width of the inner moving spring piece 212, thereby improving the rigidity of the outer moving spring piece 213; the width of the inner moving spring piece 212 is designed to be smaller than the width of the outer moving spring piece 213, and a second slit 216 is provided, thereby improving the flexibility of the inner moving spring piece 212; thereby ensuring the balance of pressure of the two inner moving contacts at the same end of the bridge-type moving spring piece.

[0051] A high-current low-height relay of the present invention adopts a method of providing a bridge-type movable spring 21 with bending portions 23 on the outer sides of the width of the corresponding part of the other side 13 of the L-shape of the reset spring 1, and the bending direction of the bending portion 23 faces the armature 3. In this structure of the present invention, the bending 23 of the two sides of the movable spring 21 can avoid contact adhesion and facilitate disconnection under high current conditions compared to the existing conductive sheet, and the distance between the two bends of the movable spring is greater than the corresponding width of the reset spring 1, which can also solve the deformation problem caused by the spring during the riveting process and ensure product consistency.

[0052] A high-current low-height relay of the present invention adopts a bridge-type movable spring composed of three stacked springs 241, 242, and 243, and the bending parts of the three springs 241, 242, and 243 are staggered and distributed in 23. This structure of the present invention improves the load capacity through multiple springs, and the multiple springs are staggered and bent to avoid rebound due to heavy load and strong magnetic attraction; at the same time, it is convenient to adjust the contact pressure; the multiple springs generate a lot of heat due to the heavy load, and the gaps are formed by staggering and bending the multiple springs, and the heat of the springs can be reduced through convection, thereby solving the temperature rise problem.

[0053] A high current low height relay of the present invention adopts a structure in which both ends of the head 31 of the armature 3 are provided with hooks 33 for hooking on the yoke of the relay at the two sides corresponding to the width of the reset spring 1. This structure of the present invention can improve the impact resistance of the relay and prevent the armature from rotating.

[0054] A high-current low-height relay of the present invention adopts a middle slot 15 extending from the bend to the yoke connection part 121 in one side of the L-shaped reset spring 1, and the middle slot 15 gradually increases from the bend to the yoke connection part 121, so that the reset spring body parts 216 on both sides of the middle slot 15 gradually decrease from the bend to the yoke connection part 121. This structure of the present invention can not only ensure the anti-drop strength of the relay, but also improve the flexibility of the spring and reduce the reaction force.

[0055] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above, or modify it into an equivalent equivalent embodiment without departing from the scope of the technical solution of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A high current low height relay, comprising a snap-on movable spring armature component; the snap-on movable spring armature component comprises an elastic reset member, a movable spring portion and an armature; the elastic reset member is connected between the armature and a yoke of the relay; characterized in that: The movable spring part includes a bridge movable spring piece and four movable contacts, and the four movable contacts are respectively fixed at the two ends of the bridge movable spring piece; the middle of the bridge movable spring piece is fixed on the armature so that the movable contacts at the two ends of the bridge movable spring piece are located on both sides of the armature; a first slit is also provided between the two movable contacts at the same end of the bridge movable spring piece, one end of the first slit passes through the bridge movable spring piece, and the other end of the first slit extends toward the middle of the bridge movable spring piece, so that the two movable contacts at the same end of the bridge movable spring piece are in parallel relationship; the two first slits extending from the two ends of the bridge movable spring piece to the middle do not intersect in the middle, so that the movable contacts at the two ends of the bridge movable spring piece are connected in series.

2. The high current low height relay according to claim 1, characterized in that: The four moving contacts are distributed in the same straight line.

3. The high current low height relay according to claim 2, characterized in that: The elastic reset member is a reset spring, which is bent into an L-shape. One side of the L-shape of the reset spring is provided with a yoke connecting portion for fixing to the yoke of the relay. The other side of the L-shape of the reset spring is bent downward relative to the one side of the L-shape of the reset spring. The other side of the L-shape of the reset spring is fixed to the armature and the head of the armature is fitted into the cutting edge of the yoke of the relay.

4. The high current low height relay according to claim 3, characterized in that: One end of the first slit extends upward from the bottom end of the bridge-type dynamic spring piece in a manner perpendicular to the same straight line, and the other end of the first slit extends from the middle of the bridge-type dynamic spring piece toward the side of the bridge-type dynamic spring piece, and the upwardly extending portion of one end of the first slit is bent and intersected with the sidewardly extending portion of the other end of the first slit.

5. The high current low height relay according to claim 4, characterized in that: In the bridge-type moving spring, the first slit divides the bridge-type moving spring into an inner moving spring and an outer moving spring, and the free ends of the inner moving spring and the outer moving spring are respectively provided with moving contact fixing parts; the width of the moving spring part between the moving contact fixing part of the outer moving spring and the root of the outer moving spring is greater than the width of the moving spring part between the moving contact fixing part of the inner moving spring and the root of the inner moving spring.

6. The high current low height relay according to claim 5, characterized in that: A second slit is also provided on the moving spring portion between the moving contact fixing portion of the inner moving spring and the root of the inner moving spring.

7. The high current low height relay according to claim 5, characterized in that: The other side of the L-shape of the reset spring is between the bridge movable spring and the armature; the bridge movable spring is provided with bending parts on the outer sides of the two sides corresponding to the width of the corresponding part of the other side of the L-shape of the reset spring, and the bending direction of the bending parts is toward the armature.

8. The high current low height relay according to claim 5, characterized in that: The middle of the bridge-type movable spring is fixed to the armature by riveting; a first rivet joint matching with the corresponding position of the armature is provided at a position close to the root of the outer movable spring of the bridge-type movable spring; a second rivet joint matching with the corresponding position of the armature is provided at an outer position of the bent portion of the outer movable spring of the bridge-type movable spring.

9. The high current low height relay according to claim 8, characterized in that: The bridge-type moving spring is composed of a plurality of springs stacked together; the bending parts of the plurality of springs are staggered, and the distance between two bending parts of the plurality of springs gradually increases in the direction away from the armature, thereby forming a certain gap between the springs at the position corresponding to the bending part.

10. The high current low height relay according to claim 9, characterized in that: In the armature, convex buds are respectively provided at the first rivet joint and the second rivet joint corresponding to the bridge-type movable spring leaf; in the multiple spring leaves, rivet holes are respectively provided at the first rivet joint, and the rivet holes of the multiple spring leaves are respectively matched with the corresponding convex buds of the armature and fixed by riveting; in a spring leaf closest to the armature, a rivet hole is provided at the second rivet joint, and the rivet hole of the spring leaf closest to the armature is matched with the corresponding convex bud of the armature and fixed by riveting.

11. The high current low height relay according to claim 3, characterized in that: Both ends of the head of the armature are respectively provided with hooks for hanging on the yoke of the relay outside the two side edges corresponding to the width of the reset spring.

12. The high current low height relay according to claim 3, characterized in that: In one side of the L-shape of the reset spring, a middle slot is provided extending from the bend to the yoke connection part, and the middle slot gradually increases from the bend to the yoke connection part, so that the reset spring body parts on both sides of the middle slot gradually decrease from the bend to the yoke connection part.

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