A snap action moving spring armature assembly and low profile relay

Abstract

The application discloses a clapper type moving spring armature component and a low-height relay, and the clapper type moving spring armature component comprises an elastic reset member, a moving spring part and an armature; one end of the elastic reset member is provided with a yoke connecting part used for being fixed with a yoke of a relay, the other end of the elastic reset member is fixed with the armature and makes a head part of the armature cooperate at a cutting edge of the yoke of the relay; the moving spring part comprises a bridge type moving spring sheet and moving contacts at two ends of the bridge type moving spring sheet, the bridge type moving spring sheet is fixed in the middle of the armature and makes the moving contacts completely overlap in the size of the armature in the height direction of the relay. The application can effectively reduce the height of the relay on the basis of ensuring that the relay has certain performance indexes, so as to meet the low-height installation requirement of the relay, thereby expanding the application range of the relay.

Description

Technical Field

[0001] This invention relates to the field of relay technology, and in particular to a snap-action type moving spring armature component and its low-height relay. Background Technology

[0002] A relay is an electronic control device with a control system (also known as an input circuit) and a controlled system (also known as an output circuit). It is commonly used in automatic control circuits and essentially acts as an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays roles such as automatic adjustment, safety protection, and circuit switching in circuits. Because the control function of relays has been widely applied in various fields, and with the continuous expansion of their application areas, the requirements for relays are becoming increasingly stringent. Existing relay technology, due to space constraints, requires minimizing the relay's size, particularly its height, while ensuring certain performance specifications. To reduce the height of relays, one existing relay design uses a horizontal magnetic circuit structure with a snap-fit ​​magnetic circuit. This type of relay has a moving spring armature component consisting of a moving spring and an armature. The moving spring is bent into an L-shape. One side (horizontal side) of the L-shape is fixed to the yoke, while the other side (vertical side) is riveted to the armature, with the head of the armature fitting into the blade edge of the yoke. The end of the other side of the moving spring extends beyond the tail of the armature. This extended portion is typically used to fix the moving contact. Thus, the height of the relay includes at least the dimensions of both the armature and the moving contact, failing to meet the requirement for a low-height relay. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a snap-action moving spring armature component and its low-height relay. Through structural improvements, the height of the relay can be effectively reduced while ensuring that the relay has certain performance indicators, so as to meet the requirements for low-height installation of the relay and thus expand the application range of the relay.

[0004] The technical solution adopted by the present invention to solve its technical problem is: a snap-fit ​​type moving spring armature component, including an elastic reset member, a moving spring portion and an armature; one end of the elastic reset member is provided with a yoke connecting portion for fixing with the yoke of the relay, and the other end of the elastic reset member is fixed to the armature and the head of the armature is engaged with the knife edge of the yoke of the relay; the moving spring portion includes a bridge-type moving spring plate and moving contacts, two moving contacts are respectively fixed at both ends of the bridge-type moving spring plate, and the middle of the bridge-type moving spring plate is fixed to the armature so that the size of the moving contacts in the height direction of the relay completely overlaps with the size of the armature in the height direction of the relay, thereby reducing the size of the relay in the height direction.

[0005] The elastic reset element is a reset spring; the reset spring is bent into an L-shape, and one end of the L-shape of the reset spring serves as one end of the elastic reset element, which is provided with a yoke connecting part for fixing with the yoke of the relay. The other end of the L-shape of the reset spring is bent downward relative to one end of the L-shape of the reset spring, and the other end of the L-shape of the reset spring serves as the other end of the elastic reset element, which is fixed with the armature and the head of the armature is engaged with the knife edge of the yoke of the relay.

[0006] The dimensions of the bridge-type moving reed in the relay height direction completely overlap with the dimensions of the armature in the relay height direction.

[0007] The other side of the L-shape of the bridge-type moving spring and the reset spring is riveted and fixed to the armature at the same position on the armature, so that the moving contacts at both ends of the bridge-type moving spring are on opposite sides of the riveting position between the reset spring and the armature.

[0008] The armature is provided with a protrusion, and the other side of the L-shaped bridge spring and the return spring are respectively provided with through holes. The through holes of the bridge spring and the other side of the L-shaped return spring are respectively fitted at the protrusion of the armature and the armature, the return spring and the bridge spring are fixed together by riveting.

[0009] The other side of the L-shaped reset spring is located between the bridge-type moving spring and the armature; the bridge-type moving spring has a bent portion on the outer side of the corresponding portion of the width of the other side of the L-shaped reset spring, and the bending direction of the bent portion is towards the armature.

[0010] The bridge-type moving spring is composed of multiple springs stacked together; the bent portions of the multiple springs are staggered, and the distance between two bent portions of the multiple springs gradually increases in the direction away from the armature, thereby forming a certain gap between the springs at the positions corresponding to the bent portions to facilitate heat dissipation.

[0011] In the bridge-type moving spring, a groove is also provided between the two moving contacts that are not connected to the two moving contacts.

[0012] The head of the armature has hooks at both ends on the outer sides corresponding to the width of the reset spring, which are used to hook onto the yoke of the relay.

[0013] One side of the L-shaped reset spring has a central slot extending from the bend towards the yoke connection, and the central slot gradually increases in size from the bend towards the yoke connection, so that the reset spring body portions on both sides of the central slot gradually decrease in size from the bend towards the yoke connection.

[0014] The elastic reset member and the bridge-type moving spring are an integral structure. The bridge-type moving spring is located at the other end of the elastic reset member, thereby forming a T-shaped moving spring component. The moving spring component is fixed to the yoke of the relay through the yoke connection part at one end of the elastic reset member, and the other end of the elastic reset member is fixed to the armature through the middle of the bridge-type moving spring.

[0015] The bridge-type moving spring is connected to two moving contacts at each end, and all four moving contacts are on the same horizontal line. A slit is provided between the two moving contacts at the same end of the bridge-type moving spring. One end of the slit extends out of the bridge-type moving spring, and the other end of the slit extends towards the middle of the bridge-type moving spring, so that the two moving contacts at the same end of the bridge-type moving spring are connected in parallel. The two slits extending towards the middle from both ends of the bridge-type moving spring do not intersect at the middle, so that the moving contacts at both ends of the bridge-type moving spring are connected in series.

[0016] A low-height relay includes a base, a magnetic circuit portion, and a snap-action spring armature component as described above; the magnetic circuit portion is mounted on the base, and includes a coil, a yoke, and an iron core that cooperate with the coil, the coil being arranged horizontally; the yoke connecting portion at one end of the elastic reset member of the snap-action spring armature component is fixed to the yoke, and the armature of the snap-action spring armature component corresponds to the pole face of the iron core.

[0017] The coil includes a coil frame, an enameled wire wound around the coil frame, and a coil lead-out end; the coil frame includes two flanges and a winding window between the two flanges; the enameled wire is wound around the winding window; in the coil frame, one of the flanges facing away from the iron core has a terminal mounting groove perpendicular to the flange; the coil lead-out end has a horizontal fixing part, an upwardly protruding lead-out part, and an obliquely arranged winding part; the fixing part of the coil lead-out end is inserted into the terminal mounting groove, and the lead-out part is equipped with an upward-opening connector interface.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. This invention employs a method where the middle of a bridge-type moving spring is fixed to the armature, and the dimensions of the moving contact in the relay height direction completely overlap with the dimensions of the armature in the relay height direction. This structure places the contacts on opposite sides of the armature, thereby reducing the relay height.

[0020] 2. This invention employs a method where the other side of the L-shape of the bridge-type moving spring and the return spring are riveted and fixed to the armature at the same position. This results in the moving contacts at both ends of the bridge-type moving spring being located on opposite sides of the riveting position between the return spring and the armature. This structure increases the distance from the contact to the riveting point, lengthens the effective deformation length of the moving spring, improves the contact swing arm, and enhances flexibility. This solves the problems of poor second suction or small overtravel caused by the short deformation length of the return spring in limited height spaces, and also addresses the flexibility and deformation length issues of the moving spring in low-height applications due to the shift of the lever arm from longitudinal to lateral.

[0021] 3. This invention employs a method where the bridge-type moving spring has bent portions on both sides of the width corresponding to the L-shape of the reset spring, with the bending direction of the bent portions facing the armature. This structure, with the moving spring bent on both sides, prevents contact adhesion under high current conditions, making it easier to disconnect compared to existing conductive sheets. Furthermore, the distance between the two bends of the moving spring is greater than the width of the corresponding reset spring, which also solves the deformation problem caused by the spring during riveting, ensuring product consistency.

[0022] 4. This invention employs a bridge-type moving spring composed of multiple stacked springs, with the bent portions of these springs staggered. This structure enhances load capacity through the use of multiple springs, and the staggered bending of the springs prevents springback caused by high load and strong magnetic attraction. It also facilitates adjustment of contact pressure. Furthermore, the high heat generated by the multiple springs under heavy load is mitigated by the gaps created by the staggered bending, which allows for convection and reduces heat generation, thus addressing the temperature rise issue.

[0023] 5. This invention employs a groove between the two moving contacts in the bridge-type moving spring, where the two moving contacts are not connected. This structure allows the two moving contacts to form a flow divider within the bridge-type moving spring, reducing heat generation in the moving spring. The groove also increases air convection, further reducing heat and solving the temperature rise problem. Simultaneously, this structure also improves the reaction force of the moving spring.

[0024] 6. This invention employs hooks at both ends of the armature head, corresponding to the width of the reset spring, for suspending it on the yoke of the relay. This structure improves the relay's shock resistance and prevents armature rotation.

[0025] 7. This invention employs an L-shaped reset spring with a central slot extending from the bend towards the yoke connection on one side. This central slot gradually increases in size from the bend towards the yoke connection, causing the reset spring body portions on both sides of the central slot to gradually decrease in size from the bend towards the yoke connection. This structure of the invention ensures both the relay's drop resistance and improves the spring's flexibility, reducing reaction force.

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments; however, the snap-fit ​​type moving spring armature component and its low-height relay of the present invention are not limited to the embodiments. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural schematic diagram of the snap-fit ​​type moving spring armature component according to Embodiment 1 of the present invention;

[0028] Figure 2 yes Figure 1 Enlarged diagram of part A in the diagram;

[0029] Figure 3 This is a three-dimensional structural schematic diagram of the snap-fit ​​type moving spring armature component of Embodiment 1 of the present invention (bottom flipped upwards);

[0030] Figure 4 yes Figure 3 Enlarged schematic diagram of part B in the diagram;

[0031] Figure 5 This is a side view of the snap-fit ​​type moving spring armature component according to Embodiment 1 of the present invention;

[0032] Figure 6 This is an exploded three-dimensional structural diagram of the snap-fit ​​type moving spring armature component according to Embodiment 1 of the present invention;

[0033] Figure 7 This is a schematic diagram of one of the springs in the bridge-type moving spring of the snap-fit ​​moving spring armature component according to Embodiment 1 of the present invention;

[0034] Figure 8 This is a schematic diagram of the structure of the reset spring of the snap-action moving spring armature component according to Embodiment 1 of the present invention;

[0035] Figure 9 This is a schematic diagram of the external structure of the low-height relay according to Embodiment 1 of the present invention;

[0036] Figure 10 This is a three-dimensional structural schematic diagram of a low-height relay (excluding the housing) according to Embodiment 1 of the present invention;

[0037] Figure 11This is a three-dimensional structural schematic diagram of a low-height relay (excluding the housing and the snap-fit ​​moving spring armature component) according to Embodiment 1 of the present invention;

[0038] Figure 12 This is a three-dimensional structural schematic diagram (rotated at an angle) of a low-height relay (excluding the housing) according to Embodiment 1 of the present invention;

[0039] Figure 13 This is an exploded perspective view (rotated at an angle) of the low-height relay (excluding the housing) according to Embodiment 1 of the present invention.

[0040] Figure 14 It is along Figure 10 A sectional view of line AA in the diagram;

[0041] Figure 15 This is a three-dimensional structural schematic diagram of the snap-fit ​​type moving spring armature component according to Embodiment 2 of the present invention;

[0042] Figure 16 This is a three-dimensional structural schematic diagram of the snap-fit ​​type moving spring armature component of Embodiment 2 of the present invention (rotated at an angle);

[0043] Figure 17 This is a schematic diagram of the moving spring component of the snap-fit ​​moving spring armature component according to Embodiment 2 of the present invention;

[0044] Figure 18 This is a three-dimensional structural schematic diagram of a low-height relay (excluding the housing) according to Embodiment 2 of the present invention;

[0045] Figure 19 This is a three-dimensional structural schematic diagram of a low-height relay (excluding the housing) according to Embodiment 3 of the present invention;

[0046] Figure 20 This is a three-dimensional structural schematic diagram of the snap-action moving spring armature component (without moving contact) according to Embodiment 3 of the present invention. Detailed Implementation

[0047] Example 1

[0048] See Figures 1 to 8As shown, a snap-fit ​​type moving spring armature component of the present invention includes an elastic reset member 1, a moving spring portion 2, and an armature 3. In this embodiment, the elastic reset member 1 is a reset spring plate, which is bent into an L-shape by a bending portion 11. One side 12 of the L-shape of the reset spring plate 1 is set approximately horizontally, and one side 12 of the L-shape of the reset spring plate 1 is provided with a yoke connecting portion 121 for fixing to the yoke of a relay. The other side 13 of the L-shape of the reset spring plate 1 is bent downward relative to one side of the L-shape of the reset spring plate, and the other side 13 of the L-shape of the reset spring plate 1 is bent downward. The armature 3 is fixed to the armature 3, and the head 31 of the armature 3 is fitted into the blade edge of the yoke of the relay. The moving spring part 2 includes a bridge-type moving spring 21 and two moving contacts 22. The two moving contacts 22 are respectively fixed to the two ends of the bridge-type moving spring 21, and the middle of the bridge-type moving spring 21 is fixed to the armature 3, so that the dimension of the moving contact 22 in the height direction of the relay completely overlaps with the dimension of the armature 3 in the height direction of the relay, thereby reducing the dimension of the relay in the height direction. When the relay is working, the armature 3 is attracted to the iron 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 element of the present invention can also be a tension spring. One end of the tension spring is connected to the yoke, 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.

[0049] In this embodiment, the other side 13 of the L-shape of the bridge-type moving spring 21 and the reset spring 1 is riveted and fixed to the armature 3 at the same position on the armature 3, so that the moving contacts 22 at both ends of the bridge-type moving spring 21 are on opposite sides of the riveting position of the reset spring 1 and the armature 3.

[0050] In this embodiment, the armature 3 is provided with a protrusion 32, and the other side 13 of the L-shape of the bridge-type moving spring 21 and the reset spring 1 are respectively provided with through holes 211 and 131. The through hole 211 of the bridge-type moving spring 21 and the through hole 131 of the other side 13 of the L-shape of the reset spring 1 are respectively fitted at the protrusion 32 of the armature 3 and the armature 3, the reset spring 1 and the bridge-type moving spring 21 are fixed together by riveting.

[0051] In this embodiment, the other side 13 of the L-shape of the reset spring 1 is located between the bridge-type moving spring 21 and the armature 3; the bridge-type moving spring 21 has a bent portion 23 on the outer side of the two sides corresponding to the width of the corresponding portion of the other side 13 of the L-shape of the reset spring 1, and the bending direction of the bent portion 23 is towards the armature 3.

[0052] In this embodiment, the bridge-type moving spring 21 is composed of three springs 241, 242, and 243 stacked together; the bent portions of the three springs 241, 242, and 243 are staggered, and the distance between the two bent portions of the three springs gradually increases in the direction away from the armature, thereby forming a certain gap between the springs at the positions corresponding to the bent portions to facilitate heat dissipation. The bending portion 23 is roughly Z-shaped. Spring 241 is closest to the reset spring 1. Springs 241, 242, and 243 are stacked sequentially. The two bending portions 23 of spring 241 are located on the outer sides of the corresponding portions of the L-shape of the reset spring 1, and the bending of the bending portion 23 of spring 241 is close to the armature 3. Spring 242 is stacked outside spring 241, and the distance between the two bending portions 23 of spring 242 is greater than the distance between the two bending portions 23 of spring 241. The bent portion of spring 242 is close to spring 241. Spring 243... The spring 243 is stacked on the outside of the spring 242. The distance between the two bent portions 23 of the spring 243 is greater than the distance between the two bent portions 23 of the spring 242. The bent portion 23 of the spring 243 is attached to the spring 242 after bending. In this way, a gap 40 is formed at the position of the bent portion 23.

[0053] In this embodiment, the bridge-type moving spring 21 also has a groove 25 between the two moving contacts 22 that does not connect the two moving contacts. Since the bridge-type moving spring 21 is composed of three springs 241, 242, and 243 stacked together, springs 241, 242, and 243 are all provided with grooves 25.

[0054] In this embodiment, the head of the armature 3 is provided with hooks 33 on both sides of the outer side corresponding to the width of the reset spring 1, which are used to hook onto the yoke of the relay.

[0055] In this embodiment, a central slot 114 is provided on one side 12 of the L-shape of the reset spring 1, extending from the bending portion 11 toward the yoke connecting portion 121. The central slot 14 gradually increases in size from the bending portion 11 toward the yoke connecting portion 121, so that the reset spring body portions 15 on both sides of the central slot gradually decrease in size from the bending portion 11 toward the yoke connecting portion 121.

[0056] See Figures 1 to 14As shown, a low-height relay of the present invention includes a housing 10, a base 4, a magnetic circuit portion 5, a stationary spring 20, and the aforementioned snap-action type moving spring armature component. The magnetic circuit portion 5 is mounted on the base 4 and includes a coil, a yoke 53, and an iron core 54 that cooperate with the coil. The coil is horizontally arranged. The yoke connecting portion 121 of the L-shaped side 12 of the reset spring 1 of the snap-action type moving spring armature component is fixed to the yoke 53, and the armature 3 of the snap-action type moving spring armature component corresponds to the pole face 541 of the iron core 54. The yoke connecting portion 121 of the L-shaped side 12 of the reset spring 1 is provided with a riveting hole.

[0057] In this embodiment, the coil includes a coil frame 51, an enameled wire 52 wound around the coil frame, and a coil lead-out end 55; the coil frame 51 includes two flanges 511 and a winding window 512 between the two flanges, and the enameled wire 52 is wound around the winding window 512; the yoke 53 is installed in the mounting hole or mounting groove of the coil frame 51, and the yoke 53 is L-shaped. One side of the L-shaped part mates with one end of the non-polar surface of the iron core 54, and the other side of the L-shaped part of the yoke 53 mates with the top of the coil frame 51, i.e., the outside of the enameled wire 52 of the winding window 512; in the coil frame 51, one of the flanges 511 facing away from the polar surface of the iron core is provided with a terminal mounting groove 513 perpendicular to the flange; the coil lead-out end 55 is provided with a horizontal fixing part 551, an upwardly protruding lead-out part 552 and an obliquely arranged winding part (not shown in the figure); the fixing part 551 of the coil lead-out end is inserted into the terminal mounting groove 513, and the lead-out part 552 is equipped with an upwardly opening connector interface 50.

[0058] This invention discloses a snap-fit ​​type moving spring armature component and its low-height relay, which employs a method where the middle of a bridge-type moving spring 21 is fixed to the armature 3, and the dimension of the moving contact 22 in the relay height direction completely overlaps with the dimension of the armature 3 in the relay height direction. This structure of the invention positions the contacts on opposite sides of the armature, thereby reducing the height of the relay. Figure 14 As shown, in the height direction of the relay, the upper edge of the armature 3 is basically at the top of the relay, the lower edge of the armature 3 is at the horizontal line H3, the upper edge of the moving contact 22 is at the horizontal line H1, the lower edge of the moving contact 22 is at the horizontal line H2, the size of the moving contact 22 in the height direction of the relay completely overlaps with the size of the armature 3 in the height direction of the relay, the lower edge of the moving spring is basically at the same horizontal line H3 as the lower edge of the armature 3, and the upper edge of the iron core 54 is at the horizontal line H4.

[0059] This invention discloses a snap-fit ​​type moving spring armature component and its low-height relay. The component employs a method where the other side 13 of the L-shape of the bridge-type moving spring 21 and the return spring 1 are riveted and fixed to the armature 3 at the same position on the armature. This results in the moving contacts 22 at both ends of the bridge-type moving spring 21 being located on opposite sides of the riveting position between the return spring 1 and the armature 3. This structure increases the distance from the contact to the riveting point, lengthens the effective deformation length of the moving spring, improves the contact swing arm, and enhances flexibility. This solves the problems of poor second-attack or small overtravel caused by the short deformation length of the return spring in limited height spaces, and also addresses the flexibility and deformation length issues of the moving spring in low-height applications due to the shift of the lever arm from longitudinal to lateral.

[0060] This invention discloses a snap-fit ​​type moving spring armature component and its low-height relay, which employs a bridge-type moving spring 21 with bent portions 23 on the outer sides of the corresponding portion of the L-shaped other side 13 of the reset spring 1, with the bending direction of the bent portions 23 facing the armature 3. This structure, with the moving spring bent on both sides, avoids contact adhesion under high current conditions compared to existing conductive sheets, making it easier to disconnect. Furthermore, the distance between the two bent sides of the moving spring is greater than the width of the corresponding reset spring, which also solves the deformation problem caused by the spring during riveting, ensuring product consistency.

[0061] This invention discloses a snap-fit ​​type moving spring armature component and its low-height relay, employing a bridge-type moving spring 21 composed of three stacked springs 241, 242, and 243, with the bent portions 23 of the three springs staggered. This structure of the invention improves load capacity through multiple springs, and the staggered bending of the multiple springs avoids springback caused by high load and strong magnetic attraction; it also facilitates adjustment of contact pressure. Since multiple springs generate significant heat due to high load, the staggered bending of the springs creates gaps, allowing convection to reduce the heat generated by the springs, thereby solving the temperature rise problem.

[0062] This invention discloses a snap-fit ​​type moving spring armature component and its low-height relay, which employs a groove 25 between two moving contacts 22 in the bridge-type moving spring 21, where the two moving contacts are not connected. In this structure, the two moving contacts form a current shunt within the bridge-type moving spring, reducing heat generation in the moving spring. The groove also increases air convection, further reducing heat and solving the temperature rise problem. Simultaneously, this structure also improves the reaction force of the moving spring.

[0063] The present invention provides a snap-action type moving spring armature component and its low-height relay, wherein the two ends of the head 31 of the armature 3 are respectively provided with hooks 33 on the outer sides corresponding to the width of the reset spring for hooking onto the yoke of the relay.

[0064] This structure of the present invention can improve the shock resistance of the relay while avoiding armature rotation.

[0065] This invention discloses a snap-fit ​​type moving spring armature component and its low-height relay. One side 12 of the L-shaped reset spring 1 has a central slot 14 extending from the bend towards the yoke connection 121. The central slot 14 gradually increases in size from the bend towards the yoke connection 121, so that the reset spring body portions 15 on both sides of the central slot 14 gradually decrease in size from the bend towards the yoke connection. This structure of the invention ensures the relay's drop resistance while improving the spring's flexibility and reducing reaction force.

[0066] Example 2

[0067] See Figures 15 to 18 As shown, the present invention provides a snap-fit ​​type moving spring armature component and its low-height relay, which differs from Embodiment 1 in that the reset spring 1 and the bridge-type moving spring 21 are integral structures. The bridge-type moving spring 21 is located at the end of the other side 13 of the L-shape of the reset spring 1, thereby forming a T-shaped moving spring component 6. Thus, the bridge-type moving spring 21 is only one piece. In order to improve the current carrying capacity of the moving spring, this embodiment also connects a current-carrying copper wire 61 to the back of the bridge-type moving spring 21 corresponding to the moving contact 22. The two ends of the current-carrying copper wire 61 are respectively connected to the back of the two moving contacts 22. The moving spring component 6 is fixed to the yoke 53 of the relay through the yoke connecting part 121 of the L-shape side 12 of the reset spring 1. The other side 13 of the L-shape of the moving spring component 6 is fixed to the armature 3 through the middle of the bridge-type moving spring 21.

[0068] Example 3

[0069] See Figures 19 to 20 As shown, the snap-action type moving spring armature component and its low-height relay of the present invention differ from Embodiment 1 in that the two ends of the bridge-type moving spring 21 are respectively connected to two moving contacts 22, and all four moving contacts 22 are on the same horizontal line. A slot 71 is also provided between the two moving contacts 22 at the same end of the bridge-type moving spring 21. One end of the slot 71 extends out of the bridge-type moving spring 21, and the other end of the slot 71 extends towards the middle of the bridge-type moving spring 21, so that the two moving contacts 22 at the same end of the bridge-type moving spring 21 are connected in parallel. The two slots 71 extending towards the middle from both ends of the bridge-type moving spring 21 do not intersect at the middle, so that the moving contacts 22 at both ends of the bridge-type moving spring 21 are connected in series.

[0070] This invention discloses a snap-action type moving spring armature component and its low-height relay. Two moving contacts 22 on one side are connected in parallel to shunt current and reduce contact resistance. The moving contacts 22 on both sides are connected in series, and the equivalent contact resistance of the four moving contacts 22 is equal to the contact resistance of one moving contact. The parallel connection of two moving contacts 22 on one side achieves current shunt, reduces temperature rise, and thus reduces contact loss and extends contact life. It also facilitates arc breaking, allowing for a smaller contact gap, lower coil attraction requirements, and consequently, a smaller coil ampere-turn value.

[0071] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the protection scope of the present invention.

Claims

1. A snap-fit ​​type moving spring armature component, comprising an elastic reset member, a moving spring portion, and an armature; one end of the elastic reset member is provided with a yoke connecting portion for fixing to the yoke of a relay, and the other end of the elastic reset member is fixed to the armature, such that the head of the armature engages with the knife edge of the yoke of the relay; characterized in that: The moving spring portion includes a bridge-type moving spring and moving contacts. Two moving contacts are fixed to both ends of the bridge-type moving spring. The middle of the bridge-type moving spring is fixed to the armature, ensuring that the dimensions of the moving contacts in the relay height direction completely overlap the dimensions of the armature in the relay height direction, thereby reducing the relay's height dimension. The elastic reset element is a reset spring. The reset spring is bent into an L-shape, and one side of the L-shape serves as one end of the elastic reset element, with a yoke connection for fixing it to the relay's yoke. The other side of the L-shaped reset spring is bent downward relative to one side of the L-shaped reset spring. The other end of the L-shaped reset spring is fixed to the armature as the other end of the elastic reset member, and the head of the armature is engaged with the knife edge of the relay yoke. The other side of the L-shaped reset spring is located between the bridge-type moving spring and the armature. The bridge-type moving spring has a bent portion on the outer side of the two sides corresponding to the width of the other side of the L-shaped reset spring, and the bending direction of the bent portion is towards the armature.

2. The snap-fit ​​type moving spring armature component according to claim 1, characterized in that: The dimensions of the bridge-type moving reed in the relay height direction completely overlap with the dimensions of the armature in the relay height direction.

3. The snap-fit ​​type moving spring armature component according to claim 1, characterized in that: The other side of the L-shape of the bridge-type moving spring and the reset spring is riveted and fixed to the armature at the same position on the armature, so that the moving contacts at both ends of the bridge-type moving spring are on opposite sides of the riveting position between the reset spring and the armature.

4. The snap-fit ​​type moving spring armature component according to claim 3, characterized in that: The armature is provided with a protrusion, and the other side of the L-shaped bridge spring and the return spring are respectively provided with through holes. The through holes of the bridge spring and the other side of the L-shaped return spring are respectively fitted at the protrusion of the armature and the armature, the return spring and the bridge spring are fixed together by riveting.

5. The snap-fit ​​type moving spring armature component according to claim 1, characterized in that: The bridge-type moving spring is composed of multiple springs stacked together; the bent portions of the multiple springs are staggered, and the distance between two bent portions of the multiple springs gradually increases in the direction away from the armature, thereby forming a certain gap between the springs at the positions corresponding to the bent portions to facilitate heat dissipation.

6. The snap-fit ​​type moving spring armature component according to any one of claims 1 to 5, characterized in that: In the bridge-type moving spring, a groove is also provided between the two moving contacts that are not connected to the two moving contacts.

7. The snap-fit ​​type moving spring armature component according to claim 1, characterized in that: The head of the armature has hooks at both ends on the outer sides corresponding to the width of the reset spring, which are used to hook onto the yoke of the relay.

8. The snap-fit ​​type moving spring armature component according to claim 1, characterized in that: One side of the L-shaped reset spring has a central slot extending from the bend towards the yoke connection, and the central slot gradually increases in size from the bend towards the yoke connection, so that the reset spring body portions on both sides of the central slot gradually decrease in size from the bend towards the yoke connection.

9. The snap-fit ​​type moving spring armature component according to claim 1, characterized in that: The elastic reset member and the bridge-type moving spring are an integral structure. The bridge-type moving spring is located at the other end of the elastic reset member, thereby forming a T-shaped moving spring component. The moving spring component is fixed to the yoke of the relay through the yoke connection part at one end of the elastic reset member, and the other end of the elastic reset member is fixed to the armature through the middle of the bridge-type moving spring.

10. The snap-fit ​​type moving spring armature component according to claim 1, characterized in that: The bridge-type moving spring is connected to two moving contacts at each end, and all four moving contacts are on the same horizontal line. A slit is provided between the two moving contacts at the same end of the bridge-type moving spring. One end of the slit extends out of the bridge-type moving spring, and the other end of the slit extends towards the middle of the bridge-type moving spring, so that the two moving contacts at the same end of the bridge-type moving spring are connected in parallel. The two slits extending towards the middle from both ends of the bridge-type moving spring do not intersect at the middle, so that the moving contacts at both ends of the bridge-type moving spring are connected in series.

11. A low-height relay, characterized in that: The device includes a base, a magnetic circuit portion, and a snap-action spring armature component as described in any one of claims 1 to 10; the magnetic circuit portion is mounted on the base, and the magnetic circuit portion includes a coil and a yoke and an iron core that cooperate with the coil, the coil being arranged horizontally; the yoke connecting portion at one end of the elastic reset member of the snap-action spring armature component is fixed to the yoke and the armature of the snap-action spring armature component corresponds to the pole face of the iron core.

12. The low-height relay according to claim 11, characterized in that: The coil includes a coil frame, enameled wire wound around the coil frame, and a coil lead-out end; the coil frame includes two flanges and a winding window between the two flanges; the enameled wire is wound around the winding window; in the coil frame, one of the flanges facing away from the iron core has a terminal mounting groove perpendicular to the flange; the coil lead-out end has a horizontal fixing part, an upwardly protruding lead-out part, and an obliquely arranged winding part; the fixing part of the coil lead-out end is inserted into the terminal mounting groove, and the lead-out part is equipped with an upward-opening connector interface.

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