Warping plate type armature, relay magnetic circuit structure and relay

Abstract

The invention discloses a seesaw type armature, a relay magnetic circuit structure and a relay, the seesaw type armature comprises a soft reed and an armature body, the armature body is provided with a normally open long force arm end which is in a normally open state with a first yoke of the relay magnetic circuit structure and a normally closed short force arm end which is in a normally closed state with a second yoke, and the soft reed is connected to the back position of the normally open long force arm end. A thinning concave part is arranged on one side of the bottom pole face of the normally-open long force arm end. According to the invention, the shaking problem of the soft reed in the armature release process can be improved, and the sensitivity and vibration resistance of the armature action can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of relays, and in particular to a seesaw armature, a relay magnetic circuit structure and a relay. Background Art

[0002] In a relay of the prior art, a soft spring piece connected to a push card is installed at the back of the normally open end of the armature to provide a reaction force for the overtravel. However, due to structural limitations of the existing balanced structure armature, the soft spring piece connected to the back of the armature will have a certain degree of jitter during the release of the armature, which will affect the working stability of the relay. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a seesaw armature, which can improve the shaking problem of the soft spring during the armature release process and improve the sensitivity and vibration resistance of the armature action.

[0004] To achieve the above object, the present invention is achieved through the following technical solutions: A seesaw armature comprises a soft spring and an armature body. The armature body is formed with a long force arm end which is normally open with a first yoke of a relay magnetic circuit structure and a short force arm end which is normally closed with a second yoke. The soft spring is connected to the back of the long force arm end, and a thinning recess is provided on one side of the bottom pole surface of the long force arm end.

[0005] Furthermore, the thinning recess is configured to reduce the contact area between the pole surface of the long arm end and the first yoke when the pole surface is attracted, and the thinning recess can reduce the deadweight of the long arm end to help balance the weight of the long arm end and the short arm end.

[0006] Furthermore, the thinning recess is arranged at the end position on one side of the bottom polar surface of the long lever arm end.

[0007] Furthermore, a narrowing portion which is gradually narrowed on both sides in the width direction and an extended handle portion connected to the end of the narrowing portion are formed at the end position of the long force arm end.

[0008] Further, the width of the extended handle is configured to be no less than 1 / 2 of the width of the soft reed to be assembled.

[0009] Further, the distal end of the extended shank portion extends to a position close to an outer end of the first yoke.

[0010] Furthermore, the long arm end is configured to be in a normally open state with the first yoke of the relay magnetic circuit structure, and the short arm end is configured to be in a normally closed state with the second yoke of the relay magnetic circuit structure.

[0011] Furthermore, the seesaw armature also includes a rotating seat, which is fixedly connected to the bottom of the armature body. A rotating shaft is connected to the rotating seat, and the rotating shaft is configured to deviate from the middle position in the length direction of the armature body and offset to the second yoke side of the relay, so that the two ends of the armature body form a long lever arm end and a short lever arm end respectively.

[0012] Based on the same inventive concept, the present invention also provides a relay magnetic circuit structure, including a coil assembly, a first yoke and a second yoke respectively connected to the two ends of the coil assembly, a non-magnetic axis frame connected between the two side edges of the first yoke and the second yoke, and any of the above-mentioned seesaw armatures, wherein the two ends of the rotating shaft on the rotating seat are respectively rotatably connected to the two axis frames, and the rotating seat is provided with a first embedding groove and a second embedding groove corresponding to the long force arm end and the short force arm end respectively, and the first permanent magnet and the second permanent magnet are respectively embedded and fixed in the first embedding groove and the second embedding groove, and the magnetic force of the second permanent magnet is greater than that of the first permanent magnet.

[0013] Based on the same inventive concept, the present invention further provides a relay, comprising any of the above-mentioned seesaw armature relay magnetic circuit structures.

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

[0015] In the seesaw armature, relay magnetic circuit structure and relay described in the present invention, the soft spring piece is connected to the back position of the long lever arm end, which can ensure that there is a sufficient contact area between the soft spring piece and the long lever arm end, so as to improve the shaking problem of the soft spring piece during the armature release process, and by setting a thinning recess on one side of the bottom pole surface of the long lever arm end, on the one hand, under the premise of ensuring that the bottom pole surface of the normally open end of the armature and the corresponding first armature have a sufficient contact area, a certain interval gap is formed between the position where the thinning recess is set at the long lever arm end and the first yoke, and the thinning recess is configured to reduce the contact area between the pole surface of the long lever arm end and the first yoke when they are attracted, which can effectively reduce the influence of the suction force when the armature is attracted due to the lengthening of the normally open end, and by setting the thinning recess, the self-weight of the long lever arm end can be reduced to help balance the weight of the long lever arm end and the short lever arm end, thereby achieving the design effect of unbalanced lever arm but mass balance of the armature part, which is beneficial to improve the sensitivity and vibration resistance of the armature action. In addition, since the relay of the present application has a low height and small volume structure, its internal space is limited, and the movement stroke of the armature inside the relay has certain spatial limitations. By providing a thinned recess at the end position on one side of the bottom pole surface of the long lever arm end to form a flattened structure, the abutment fitting height of the long lever arm end is reduced, which can effectively increase the movement stroke of the armature. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of a relay according to an embodiment of the present invention.

[0016] Figure 2 Schematic diagram of the magnetic circuit structure of an embodiment of the present invention.

[0016] Figure 3 It is a schematic diagram of the partial structural decomposition of an embodiment of the present invention.

[0017] Figure 4 1 is a top view of the magnetic circuit structure of an embodiment of the present invention.

[0018] Description of labels:

[0019] 1. soft spring, 2. armature body, 3. first yoke, 4. second yoke, 5. rotating seat, 6. coil assembly, 7. shaft frame, 8. first permanent magnet, 9. second permanent magnet, 21. long lever arm end, 22. short lever arm end, 51. rotating shaft, 52. first embedding groove, 53. second embedding groove, 211. thinning recess, 212. gradually narrowing portion, 213. extended handle. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] Please refer to the attached Figure 1 To Attachment Figure 4An embodiment of the present invention provides a seesaw armature, including a soft spring 1 and an armature body 2, the armature body 2 is formed with a long lever arm end 21 which is normally open with a first yoke 3 of a relay magnetic circuit structure and a short lever arm end 22 which is normally closed with a second yoke 4, the soft spring 1 is connected to the back of the long lever arm end 21, and a thinning recess 211 is provided on one side of the bottom pole surface of the long lever arm end 21. It can be understood that, in the present embodiment, one end of the armature body 2 is lengthened to form a long lever arm end 21, and the soft spring piece 1 is connected to the back of the long lever arm end 21, which can ensure that there is sufficient contact area between the soft spring piece 1 and the long lever arm end 21, so as to improve the shaking problem of the soft spring piece 1 during the armature release process. However, the lengthening of the head of the armature body 2 will bring a series of new problems, such as the increase in the weight of the armature, the increase in the armature pole surface, the reduction in the holding force of the armature release and closing state, the increase in the instability of the contact surface, and the easy existence of a contact gap. The present embodiment cleverly provides a thinning recess 211 on one side of the bottom pole surface of the long lever arm end 21. On the one hand, while ensuring that the bottom pole surface of the armature is normally open, the contact gap between the armature body 2 and the long lever arm end 21 is not too large. On the premise that there is sufficient contact area with the corresponding first yoke 3, a certain interval gap is formed between the position where the thinning recess 211 is set at the long lever arm end 21 and the first yoke 3, and the thinning recess 211 is configured to reduce the contact area between the pole surface of the long lever arm end 21 and the first yoke 3 when they are attracted, which can effectively reduce the influence of the suction force on the armature when the armature is attracted due to the lengthening of the normally open end. In addition, by setting the thinning recess 211, the self-weight of the long lever arm end 21 can be reduced to help balance the weight at both ends of the long lever arm end 21 and the short lever arm end 22, thereby achieving the design effect of an unbalanced lever arm but a balanced mass of the armature part, which is beneficial to improve the sensitivity and vibration resistance of the armature action.

[0023] Please refer to the attached Figure 1 To Attachment Figure 3 In one preferred embodiment, the thinning recess 211 is disposed at the end position of one side of the bottom pole surface of the long arm end 21. In the present application, since the relay is a low-height, small-volume structure, its internal space is limited, and the movement stroke of the armature inside the relay has a certain space limitation. By disposing the thinning recess 211 at the end position of one side of the bottom pole surface of the long arm end 21 to form a flattened structure, the abutment height of the long arm end 21 is reduced, and the movement stroke of the armature can be effectively increased.

[0024] Please refer to the attached Figure 1 To Attachment Figure 4In one preferred embodiment, a narrowing portion 212 which is gradually narrowed on both sides in the width direction and an extended handle 213 connected to the end of the narrowing portion 212 are formed at the end position of the long arm end 21. In this embodiment, by forming the narrowing portion 212 at the end position of the long arm end 21, on the one hand, the deadweight of the long arm end 21 can be further reduced, and on the other hand, the structure of gradually narrowing on both sides can also conveniently avoid the welding point A of the magnetic isolation plate on the first yoke 3 (the magnetic isolation plate is provided with an elastic abutment structure that can provide a reaction force for the armature), thereby ensuring that the armature and the magnetic isolation plate are in stable contact. In addition, the design of the thinned recess 211 and the narrowing portion 212 effectively reduces the armature pole surface and improves the holding force of the armature in the release and closed states.

[0025] Please refer to the attached Figure 1 To Attachment Figure 3 In one preferred embodiment, the width of the extended handle 213 is configured to be no less than 1 / 2 of the width of the soft spring piece 1 to be assembled. In this way, a stable contact can be formed between the soft spring piece 1 and the long force arm end 21.

[0026] Please refer to the attached Figure 1 To Attachment Figure 3 In one preferred embodiment, the end of the extended handle 213 extends to a position near the outer end of the first yoke 3.

[0027] Please refer to the attached Figure 1 To Attachment Figure 3 In one preferred embodiment, the soft spring piece 1 is riveted to the back of the long arm end 21. However, those skilled in the art should understand that in other embodiments, the soft spring piece 1 can also be fixedly connected to the back of the long arm end 21 through other connection structures, and is not limited to the specific implementation method disclosed in this embodiment.

[0028] Please refer to the attached Figure 1 To Attachment Figure 3 In one preferred embodiment, the seesaw armature also includes a rotating seat 5, which is fixedly connected to the bottom of the armature body 2, and a rotating shaft 51 is connected to the rotating seat 5. The rotating shaft 51 is configured to deviate from the middle position in the length direction of the armature body 2 and offset to the second yoke side of the relay, so that the two ends of the armature body 2 form a long lever arm end 21 and a short lever arm end 22 respectively.

[0029] Please refer to the attached Figure 1 To Attachment Figure 3One embodiment of the present invention further provides a relay magnetic circuit structure, comprising a coil assembly 6, a first yoke 3 and a second yoke 4 respectively connected to the two ends of the coil assembly 6, a non-magnetic shaft frame 7 connected between the two sides of the first yoke 3 and the second yoke 4, and a seesaw armature of any of the above embodiments, wherein the two ends of the rotating shaft 51 on the rotating seat 5 are respectively rotatably connected to the two shaft frames 7, and the rotating seat 5 is provided with a first embedding groove 52 and a second embedding groove 53 corresponding to the long arm end 21 and the short arm end 22, respectively, and the first embedding groove 52 and the second embedding groove 53 are respectively embedded and fixed with a first permanent magnet 8 and a second permanent magnet 9, and the magnetic force and weight of the second permanent magnet 9 are greater than the first permanent magnet 8. In addition, it can be understood that in this embodiment, it is precisely because of the lengthened design of the long arm end 21 of the armature body 2 that more space is formed between the first yoke 3 and the rotating seat 5 to install the magnetic isolation plate, so that the elastic abutment structure on the magnetic isolation plate has enough extension space to act on the bottom of the long arm end 21 of the armature body 2 to provide a reaction force for it.

[0030] Please refer to the attached Figure 1 To Attachment Figure 4 An embodiment of the present invention further provides a relay, comprising the seesaw armature or relay magnetic circuit structure of any of the above embodiments.

[0031] As described above, the embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein by equivalents. These modifications or replacements do not deviate the corresponding technical solutions 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 making creative efforts belong to the protection scope of the present invention.

Claims

1. A seesaw armature, comprising a soft spring (1) and an armature body (2), wherein the armature body (2) is formed with a long arm end (21) corresponding to a first yoke (3) of a relay magnetic circuit structure and a short arm end (22) corresponding to a second yoke (4), the soft spring (1) being connected to the back of the long arm end (21), characterized in that: A thinning recess (211) is provided on one side of the bottom polar surface of the long force arm end (21).

2. The seesaw armature according to claim 1, characterized in that: The thinning recess (211) is configured to reduce the contact area between the pole surface of the long lever arm end (21) and the first yoke (3) when they are attracted, and the thinning recess (211) can reduce the deadweight of the long lever arm end (21) to help balance the weight at both ends of the long lever arm end (21) and the short lever arm end (22).

3. The seesaw armature according to claim 2, characterized in that: The thinning recess (211) is arranged at the end position on one side of the bottom polar surface of the long force arm end (21).

4. The seesaw armature according to claim 1, characterized in that: A gradually narrowing portion (212) which gradually narrows on both sides in the width direction and an extended handle portion (213) connected to the end of the gradually narrowing portion (212) are formed at the end position of the long force arm end (21).

5. The seesaw armature according to claim 4, characterized in that: The width of the extended handle (213) is configured to be no less than 1 / 2 of the width of the soft reed (1) to be assembled.

6. The seesaw armature according to claim 4, characterized in that: The end of the extended handle (213) extends to a position close to the outer end of the first yoke (3).

7. The seesaw armature according to claim 1, characterized in that: The long arm end (21) is configured to be in a normally open state with a first yoke (3) of the relay magnetic circuit structure, and the short arm end (22) is configured to be in a normally closed state with a second yoke (4) of the relay magnetic circuit structure.

8. The seesaw armature according to any one of claims 1 to 7, characterized in that: The seesaw armature further comprises a rotating seat (5), the rotating seat (5) being fixedly connected to the bottom of the armature body (2), a rotating shaft (51) being connected to the rotating seat (5), and the rotating shaft (51) being arranged to deviate from the middle position in the length direction of the armature body (2) and to deviate toward the second yoke (4) side of the relay, so that the two ends of the armature body (2) respectively form a long force arm end (21) and a short force arm end (22).

9. A relay magnetic circuit structure, characterized in that: The invention comprises a coil assembly (6), a first yoke (3) and a second yoke (4) respectively connected to the two ends of the coil assembly (6), a non-magnetic shaft frame (7) connected between the two side edges of the first yoke (3) and the second yoke (4), and a seesaw armature as described in claim 8, wherein the two ends of the rotating shaft (51) on the rotating seat (5) are respectively rotatably connected to the two shaft frames (7), and the rotating seat (5) is provided with a first embedding groove (52) and a second embedding groove (53) respectively corresponding to the long force arm end (21) and the short force arm end (22), and the first embedding groove (52) and the second embedding groove (53) are respectively embedded and fixed with a first permanent magnet (8) and a second permanent magnet (9), and the magnetic force of the second permanent magnet (9) is greater than that of the first permanent magnet (8).

10. A relay, characterized in that: It comprises the seesaw armature described in any one of claims 1 to 8 or the relay magnetic circuit structure described in claim 9.

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