Movable spring assembly and relay

Abstract

The invention discloses a movable spring assembly and a relay, the movable spring assembly comprises a movable spring body, the movable spring body comprises a main body section and a bending part connected with the free end of the main body section, and the bending part is provided with a movable contact corresponding to a static contact on a static spring assembly of the relay. And the bending part is configured to be bent towards one side far away from the static spring assembly so as to enlarge a breaking gap between the movable contact and the static contact. The bending part is arranged at the free end of the main body section, and the movable contact is arranged on the bending part, so that compared with an existing linear strip-shaped movable spring structure, the space occupied by the movable spring structure corresponding to the breaking direction of the contact in the action stroke is relatively small, the compact installation of components of the relay in a limited space is facilitated, and the reliability of the relay is improved. And the design effects of small size, contact and large gap of the relay can be realized, so that the high-voltage resistance of the relay can be improved.

Description

Technical Field

[0001] This invention relates to the field of relay technology, and more specifically to a moving spring assembly and a relay. Background Technology

[0002] An electromagnetic relay is an automatic switching element with isolation between its input and output terminals. It is widely used in communications, automobiles, automatic control, home appliances, and many other fields, and is one of the most important control components. It mainly consists of a coil, iron core, yoke, armature, push block, moving spring, stationary spring, base, and housing. The structure of a conventional relay's moving spring assembly is shown in the attached figure. Figure 6 As shown, the moving reed body 1' is roughly in the shape of a long straight line, which results in the moving reed body 1' occupying relatively more space in the direction of contact breaking within the operating stroke. This is not conducive to achieving the design effect of small size, multiple contacts, and large gap of the relay. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a moving spring assembly, which mainly solves the technical problem that existing long, straight moving springs are not conducive to achieving the design effect of small size, multiple contacts, and large gap in relays.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution: A moving spring assembly includes a moving spring body, the moving spring body including a main body segment and a bent portion connected to a free end of the main body segment, the bent portion being mounted with a moving contact corresponding to a stationary contact on a stationary spring assembly of a relay, and the bent portion being configured to bend toward a side away from the stationary spring assembly to increase the breaking gap between the moving contact and the stationary contact.

[0005] Furthermore, the bending portion includes a first bending segment connected to the free end of the main body segment and a second bending segment connected to the end of the first bending segment. The first bending segment is configured to bend relative to the main body segment toward the side away from the stationary spring assembly, and the second bending segment is configured to bend relative to the first bending segment toward the side closer to the stationary spring assembly. The moving contact is mounted on the second bending segment.

[0006] Furthermore, the bending angle of the first bending segment relative to the main body segment is defined as α1, and the bending angle of the second bending segment relative to the first bending segment is defined as α2, where α1 > α2.

[0007] Furthermore, α1 = 10°~40°, α2 = 5°~30°.

[0008] Furthermore, a connecting structure is provided on the main body of the moving spring body, and the moving spring body is configured to be connected to the push card of the relay through the connecting structure so that the push card can push the moving spring assembly to operate.

[0009] Based on the same inventive concept, the present invention also provides a relay, including a base and a magnetic circuit portion disposed on the base, a push card and two sets of contact structures, wherein the contact structures include a stationary spring assembly and any of the above-mentioned moving spring assemblies, and the two sets of contact structures are centrally symmetrically arranged on the base. The push card is provided with a first mating part for cooperating with the driving end of the armature of the magnetic circuit portion, and a second mating part and a third mating part for cooperating with the moving spring assemblies of the two sets of contact structures respectively, along its length direction. The push card is driven to move horizontally by the swing of the driving end of the armature, and then the push card drives the moving spring assemblies of the two sets of contact structures to move synchronously.

[0010] Furthermore, the main body of the moving spring body is provided with a slot for forming a connecting structure. The second and third mating parts of the push card are respectively provided with a first push protrusion and a second push protrusion for pushing the corresponding moving spring assembly. The second and third mating parts are also respectively provided with a first snap-fit ​​part and a second snap-fit ​​part for engaging with the slot on the corresponding main body.

[0011] Furthermore, a slot is provided on the upper part of the main body segment corresponding to the second mating part, and a first snap-fit ​​part adapted to the slot is provided on the second mating part. A slot is provided on the upper and lower parts of the main body segment corresponding to the third mating part, and two second snap-fit ​​parts are provided on the third mating part respectively corresponding to the two slots of the main body segment.

[0012] Furthermore, an extended flange is formed on the card slot.

[0013] Furthermore, the first, second, and third mating parts on the push card are arranged in a staggered sequence along the pushing direction of the push card.

[0014] The above technical solution has the following advantages or beneficial effects:

[0015] In the moving spring assembly and relay described in this invention, since a bending portion is provided at the free end of the main body section and the moving contact is installed on the bending portion, compared with the existing straight strip-shaped moving spring structure, the space occupied by the moving contact in the direction of contact breaking within the operating stroke is relatively small. This is beneficial for the relay to achieve compact installation of components in a limited space, and further facilitates the design effect of small size, large contact and large gap of the relay, so as to improve the high voltage resistance performance of the relay. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the moving spring assembly according to an embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of the push card structure according to an embodiment of the present invention.

[0018] Figure 3This is a schematic diagram of the assembly structure of the moving spring assembly and the base according to an embodiment of the present invention.

[0019] Figure 4 This is a schematic diagram of the internal structure of the relay according to an embodiment of the present invention.

[0020] Figure 5 This is a schematic diagram of the internal structure of the relay from another angle according to an embodiment of the present invention.

[0021] Figure 6 This is a comparative structural diagram of the moving spring assembly of this invention and the moving spring assembly of the prior art.

[0022] Label Explanation:

[0023] 1. Moving spring body, 2. Stationary spring assembly, 3. Pushing clip, 4. Base, 5. Magnetic circuit part, 11. Main body section, 12. Bending part, 13. Moving contact, 21. Stationary contact, 31. First mating part, 32. Second mating part, 33. Third mating part, 51. Armature, 111. Slot, 121. First bending section, 122. Second bending section, 321. First pushing protrusion, 322. First locking part, 331. Second pushing protrusion, 332. Second locking part. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0026] Please refer to the appendix. Figure 1 To be continued Figure 6 One embodiment of the present invention provides a moving spring assembly, including a moving spring body 1. The moving spring body 1 includes a main body segment 11 and a bent portion 12 connected to the free end of the main body segment 11. A moving contact 13 corresponding to a stationary contact 21 on a stationary spring assembly 2 of a relay is mounted on the bent portion 12. The bent portion 12 is configured to bend away from the stationary spring assembly 2 to increase the breaking gap between the moving contact 13 and the stationary contact 21. It is understood that in this embodiment, since the bent portion 12 is provided at the free end of the main body segment 11, the moving contact 13 is mounted on the bent portion 12, as shown in the attached figure. Figure 6As shown, compared to the existing linear strip-shaped moving spring structure, it occupies relatively less space in the direction of contact breaking within the operating stroke. This is beneficial for the compact installation of relay components in a limited space, and further facilitates the design effect of small relay size, large contact, and large gap (i.e., the breaking distance between the moving contact and the stationary contact when the contact breaks), so as to improve the high voltage resistance performance of the relay.

[0027] Please refer to the appendix. Figure 1 In one preferred embodiment, the bending portion 12 includes a first bending segment 121 connected to the free end of the main body segment 11 and a second bending segment 122 connected to the end of the first bending segment 121. The first bending segment 121 is configured to bend relative to the main body segment 11 toward the side away from the stationary spring assembly 2, and the second bending segment 122 is configured to bend relative to the first bending segment 121 toward the side closer to the stationary spring assembly 2. A moving contact is mounted on the second bending segment 122. The bending angle of the first bending segment 121 relative to the main body segment 11 is defined as α1, and the bending angle of the second bending segment 122 relative to the first bending segment 121 is defined as α2, where α1 > α2. α1 = 10° to 40°, and α2 = 5° to 30°.

[0028] Based on the same inventive concept, the present invention also provides a relay, including a base 4 and a magnetic circuit portion 5, a push card 3, and two sets of contact structures disposed on the base 4. A connecting structure is provided on the main body segment 11 of the movable spring body 1. The movable spring body 1 is configured to be connected to the push card 3 of the relay through the connecting structure so that the push card 3 can drive the movable spring assembly to operate. The contact structure includes a stationary spring assembly 2 and any of the movable spring assemblies described above, and the two sets of contact structures are centrally symmetrically arranged on the base 4. The push card 3 is provided with a first mating part 31 for cooperating with the driving end of the armature 51 of the magnetic circuit portion 5, and a second mating part 32 and a third mating part 33 for cooperating with the movable spring assemblies of the two sets of contact structures, respectively, along its length direction. The push card 3 is driven to translate by the swing of the driving end of the armature 51, thereby driving the movable spring assemblies of the two sets of contact structures to operate synchronously. Preferably, the first mating part 31, the second mating part 32, and the third mating part 33 on the push card 3 are arranged in a staggered sequence along the pushing direction of the push card 3. It is understood that in this embodiment, the push card 3 has its first mating part 31, second mating part 32 and third mating part 33 arranged in a staggered manner along the pushing direction of the push card 3, and the two sets of contact structures are arranged in a centrally symmetrical manner on the base 4. In this way, on the one hand, the pushing force can be balanced and its operation stability can be improved. On the other hand, the push card 3 can also achieve a relatively long contact gap stroke of the moving spring body 1 with a relatively short movement stroke, which is conducive to achieving the design effect of small size, multiple contacts and large gap of the relay.

[0029] Please refer to the appendix. Figure 1 To be continued Figure 5 In one preferred embodiment, the main body segment 11 of the movable spring body 1 is provided with a slot 111 for forming a connecting structure. The second mating portion 32 and the third mating portion 33 of the push card 3 are respectively provided with a first pushing protrusion 321 and a second pushing protrusion 331 for pushing the corresponding movable spring assembly. Furthermore, the second mating portion 32 and the third mating portion 33 are respectively provided with a first engaging portion 322 and a second engaging portion 332 for engaging with the slot 111 on the corresponding main body segment 11. In another preferred embodiment, a slot 111 is provided on the upper part of the main body segment 11 corresponding to the second mating portion 32. A first engaging portion 322 adapted to the slot 111 is provided on the second mating portion 32. A slot 111 is provided on the upper and lower parts of the main body segment 11 corresponding to the third mating portion 33. Two second engaging portions 332 corresponding to the two slots 111 on the third mating portion 33 are provided. Preferably, an extended flange is formed on the slot 111. In this embodiment, since the position of the armature 51 pushing the push card is not at the central axis of the push card, but rather offset from the central axis and located to the side, this arrangement allows the drive end of the armature to avoid excessive bending, thus achieving a relatively long stroke of the push card with a relatively small swing distance of the armature. Furthermore, the third mating part 33 has two second engaging parts 332 respectively corresponding to the two slots 111 of the main body section 11, and a slot 111 is provided on the upper and lower parts of the main body section 11 of the outer moving spring body 1. The mutual cooperation of each engaging part and the engaging slot achieves a multi-directional limiting effect, facilitating a reliable pushing effect of the push card 3, and also improving the anti-drop effect of the push card 3, preventing the push card from coming out and causing frictional interference with the base shell, resulting in scratches and other defects.

[0030] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features therein. These modifications or substitutions do not cause the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. Therefore, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

Claims

1. A movable spring assembly, characterized in that: The device includes a moving reed body (1), which includes a main body section (11) and a bent portion (12) connected to the free end of the main body section (11). The bent portion (12) is equipped with a moving contact (13) corresponding to the stationary contact (21) on the stationary spring assembly (2) of the relay. The bent portion (12) is configured to bend toward the side away from the stationary spring assembly (2) to increase the breaking gap between the moving contact (13) and the stationary contact (21).

2. The moving spring assembly according to claim 1, characterized in that: The bending section (12) includes a first bending section (121) connected to the free end of the main body section (11) and a second bending section (122) connected to the end of the first bending section (121). The first bending section (121) is configured to bend relative to the main body section (11) toward the side away from the stationary spring assembly (2), and the second bending section (122) is configured to bend relative to the first bending section (121) toward the side closer to the stationary spring assembly (2). The moving contact () is mounted on the second bending section (122).

3. The moving spring assembly according to claim 2, characterized in that: The bending angle of the first bending segment (121) relative to the main body segment (11) is defined as α1, and the bending angle of the second bending segment (122) relative to the first bending segment (121) is defined as α2, where α1 > α2.

4. The moving spring assembly according to claim 2, characterized in that: α1＝10°～40°，α2＝5°～30°。 5. The moving spring assembly according to any one of claims 1 to 4, characterized in that: A connecting structure is provided on the main body section (11) of the moving reed body (1). The moving reed body (1) is configured to be connected to the push card (3) of the relay through the connecting structure so that the push card (3) can push the moving reed assembly to operate.

6. A relay, characterized in that: The device includes a base (4) and a magnetic circuit part (5) disposed on the base (4), a push card (3) and two sets of contact structures. The contact structures include a stationary spring assembly (2) and a moving spring assembly as described in claim 5. The two sets of contact structures are arranged symmetrically on the base (4). The push card (3) is provided with a first mating part (31) for cooperating with the driving end of the armature (51) of the magnetic circuit part (5) and a second mating part (32) and a third mating part (33) for cooperating with the moving spring assemblies of the two sets of contact structures, respectively, along its length direction. The push card (3) is driven to move horizontally by the swing of the driving end of the armature (51), and then the push card (3) drives the moving spring assemblies of the two sets of contact structures to move synchronously.

7. The relay according to claim 6, characterized in that: The main body section (11) of the moving spring body (1) is provided with a slot (111) for forming a connecting structure. The second mating part (32) and the third mating part (33) of the push card (3) are respectively provided with a first push protrusion (321) and a second push protrusion (331) for pushing the corresponding moving spring assembly. The second mating part (32) and the third mating part (33) are also respectively provided with a first snap-fit ​​part (322) and a second snap-fit ​​part (332) for cooperating with the slot (111) on the corresponding main body section (11).

8. The relay according to claim 7, characterized in that: A slot (111) is provided on the upper part of the main body segment (11) corresponding to the second mating part (32). A first snap-fit ​​part (322) adapted to the slot (111) is provided on the second mating part (32). A slot (111) is provided on the upper and lower parts of the main body segment (11) corresponding to the third mating part (33). Two second snap-fit ​​parts (332) are provided on the third mating part (33) respectively corresponding to the two slots (111) of the main body segment (11).

9. The relay according to claim 8, characterized in that: An extended flange is formed on the card slot (111).

10. The relay according to any one of claims 6 to 9, characterized in that: The first mating part (31), the second mating part (32) and the third mating part (33) on the push card (3) are arranged in a staggered manner along the pushing direction of the push card (3).

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