relay

Abstract

This invention belongs to the field of low-voltage electrical technology and discloses a relay. The relay includes an iron component comprising an integrally connected iron core, a connecting portion, and a yoke, with the iron core and yoke respectively located at both ends of the connecting portion. The iron core surface of the iron core and the yoke surface of the yoke are on the same plane. The coil frame includes a first assembly plate, a winding tube, and a second assembly plate, respectively located at the two ends of the winding tube. The iron core passes through the winding tube and extends outwards, with the connecting portion stopping against the outer wall surface of the second assembly plate. This invention eliminates the need for riveting between the iron core and yoke, preventing cracking of the iron core and yoke or misalignment of the iron core and yoke surfaces, thus avoiding AC hum and noise and improving the relay's yield rate.

Description

Technical Field

[0001] This invention relates to the field of low-voltage electrical technology, and more particularly to relays. Background Technology

[0002] Electromagnetic AC relays mainly consist of a base assembly, an electromagnetic system, a contact system, and a housing. The base assembly includes a base, a stationary spring, and a connecting piece. The electromagnetic system includes a coil, a yoke, an iron core assembly, and a short-circuit ring (for AC). The coil includes a coil frame, a connecting piece, and enameled wire.

[0003] In the existing technology, the iron core and the short-circuit ring are riveted together to form an iron core assembly, which is then fixed to the yoke by riveting. This solution has the following disadvantages:

[0004] During the riveting process of the iron core assembly and the yoke, the surface of the iron core is the stress point. It is easy for the iron core surface to be out of plane with the yoke surface after riveting. This can lead to problems such as gaps in the electromagnetic system and AC noise after the relay is assembled, causing the product to be scrapped directly. Summary of the Invention

[0005] The purpose of this invention is to provide a relay in which the iron core and yoke are an integral structure, eliminating the need for riveting between them. In this structure, the iron core surface and the yoke surface are on the same plane, avoiding the generation of AC hum and noise caused by cracking of the iron core and yoke or the iron core surface and yoke surface not being on the same plane, thereby improving the yield rate of the relay.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Relays, including:

[0008] The iron component includes an integrally connected iron core, a connecting part, and a yoke part. The iron core and the yoke part are respectively located at both ends of the connecting part and on the same side of the connecting part; the iron core surface of the iron core and the yoke surface of the yoke part are located in the same plane.

[0009] The coil frame includes a first assembly plate, a winding tube, and a second assembly plate. The first assembly plate and the second assembly plate are respectively disposed at the two ends of the winding tube. The iron core portion passes through the winding tube and extends out. The connecting portion stops on the outer wall surface of the second assembly plate.

[0010] As an alternative to the relay, the outer wall of the second assembly plate is recessed with a positioning groove, and the connecting part is engaged in the positioning groove.

[0011] As an optional solution for the relay, the relay further includes a short-circuit ring. The end of the iron core portion away from the connecting portion is provided with a first limiting end, an iron core surface, and a second limiting end. A first riveting groove is formed between the iron core surface and the first limiting end, and a second riveting groove is formed between the iron core surface and the second limiting end. The short-circuit ring is sleeved on the iron core surface and riveted to the first riveting groove and the second riveting groove. The short-circuit ring stops on the outer wall surface of the first assembly plate, and the end of the iron core surface away from the connecting portion extends out of the short-circuit ring.

[0012] As an alternative to the relay, the inner walls of the winding tube are provided with protruding structures on both sides, and the outer wall of the iron core is sandwiched between the two protruding structures.

[0013] As an optional solution for the relay, the relay further includes a base and a first positioning pin. The base is provided with a first socket, a second socket, and a third socket. The first socket is perpendicularly connected to the second socket, and the third socket is perpendicularly connected to the second socket. The second assembly plate is provided with a first insertion part at the end away from the winding tube. The first insertion part is provided with a limiting hole. The first insertion part is inserted into the first socket, and the first positioning pin is inserted into the second socket and the limiting hole.

[0014] As an optional solution for the relay, the height of the limiting hole relative to the bottom surface of the base is greater than the height of the second insertion hole relative to the bottom surface of the base. The first positioning pin includes a first positioning segment and a second positioning segment. The first positioning segment and the second positioning segment are connected in an L-shape. The first positioning segment is inserted into the second insertion hole and the limiting hole, and the second positioning segment is inserted into the second insertion hole.

[0015] As an alternative to the relay, at least one surface of the first positioning pin located in the limiting hole and the second socket is provided with a first raised rib, and the first raised rib abuts against the limiting hole and / or the second socket.

[0016] As an optional solution for the relay, the relay further includes a second positioning pin, the first positioning segment has a misalignment notch, the longitudinal cross-sectional area of ​​the second positioning segment is smaller than the inner hole area of ​​the second insertion hole, and the second positioning pin is inserted into the second insertion hole and the limiting hole.

[0017] As an optional solution for the relay, the second positioning pin includes a third positioning segment and a fourth positioning segment. The third positioning segment and the fourth positioning segment are connected in an L-shape. The third positioning segment is inserted into the second socket and the misalignment notch, and the fourth positioning segment is inserted into the second socket.

[0018] As an alternative to the relay, at least one surface of the second locating pin located in the misalignment notch and the second socket is provided with a second raised rib, the second raised rib abutting against the misalignment notch and / or the second socket.

[0019] As an optional solution for the relay, one end of the first assembly plate is provided with a second plug-in portion, and the other end of the first assembly plate is provided with a support ear. The second plug-in portion is engaged with the limiting rib on the base, and the support ear abuts against the yoke portion.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] The relay provided by this invention uses a connecting part to connect the iron core and the yoke into an integral structure. The iron core surface and the yoke surface are on the same plane, which improves the overall structural strength of the iron parts, reduces the riveting and fixing process of the iron core and the yoke, ensures the surface of the iron core is flat, avoids AC noise caused by cracking of the iron core and the yoke, and improves the yield of the relay. The iron core is inserted into the winding tube and the front end of the iron core extends out of the winding tube. The front end of the iron core can be attracted or separated from the armature of the relay. The connecting part stops on the outer wall of the second assembly plate, limiting the length of the iron core inserted into the winding tube and ensuring that the iron core is stably installed on the coil frame. Attached Figure Description

[0022] Figure 1 This is a first exploded view of the relay in an embodiment of the present invention;

[0023] Figure 2 This is a second exploded view of the relay in an embodiment of the present invention;

[0024] Figure 3 This is an assembly diagram of the relay from a first-view perspective in an embodiment of the present invention;

[0025] Figure 4 This is an assembly diagram of the relay from a second perspective in an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the iron component in an embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the coil frame structure in an embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of the structure of the first positioning pin in an embodiment of the present invention;

[0029] Figure 8 This is a schematic diagram of the structure in an embodiment of the present invention, showing the second protruding ribs disposed on the left and right sides of the second positioning pin;

[0030] Figure 9This is a schematic diagram of the structure in an embodiment of the present invention, showing the second protruding rib disposed on the upper surface of the second positioning pin;

[0031] Figure 10 This is a structural schematic diagram of the base from a first-view perspective in an embodiment of the present invention;

[0032] Figure 11 This is a structural schematic diagram of the base from a second perspective in an embodiment of the present invention.

[0033] In the picture:

[0034] 1. Iron component; 2. Coil frame; 3. Short-circuit ring; 4. Base; 5. First locating pin; 6. Second locating pin;

[0035] 11. Core section; 111. First limiting end; 112. Core surface; 113. Second limiting end; 114. First riveting groove; 115. Second riveting groove; 12. Connecting part; 13. Yoke section; 116. Yoke surface;

[0036] 21. First assembly plate; 22. Winding tube; 221. Protruding structure; 23. Second assembly plate; 24. Positioning slot; 25. First insertion part; 251. Limiting hole; 26. Second insertion part; 27. Support ear;

[0037] 41. First insertion hole; 42. Second insertion hole; 43. Limiting rib; 44. Third insertion hole;

[0038] 51. First positioning segment; 511. Misalignment notch; 52. Second positioning segment; 53. First protruding rib;

[0039] 61. Third positioning segment; 62. Fourth positioning segment; 63. Second protruding rib. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0041] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0044] To eliminate the need for riveting between the core and yoke, prevent cracking of the core and yoke, and avoid hum or noise caused by misalignment between the core and yoke surfaces, thereby improving the relay yield, this embodiment provides a relay, such as... Figures 1 to 11 As shown.

[0045] In this embodiment, the relay includes an iron component 1 and a coil frame 2. The iron component 1 includes a core portion 11, a connecting portion 12, and a yoke portion 13 connected in sequence. The core portion 11 and the yoke portion 13 are respectively located at both ends of the connecting portion 12 and on the same side of the connecting portion 12. The core surface 112 of the core portion 11 and the yoke surface 116 of the yoke portion 13 are located on the same plane. The coil frame 2 includes a first assembly plate 21, a winding tube 22, and a second assembly plate 23. The first assembly plate 21 and the second assembly plate 23 are respectively located at the two ends of the winding tube 22. The core portion 11 passes through the winding tube 22 and extends outwards. The connecting portion 12 stops at the outer wall surface of the second assembly plate 23. The yoke portion 13 is parallel to and spaced apart from the core portion 11.

[0046] In summary, the relay provided by this invention has an integral structure of the iron core 11, the connecting part 12, and the yoke 13. The iron core surface 112 of the iron core 11 and the yoke surface 116 of the yoke 13 are on the same plane, which improves the overall structural strength of the iron part 1, reduces the riveting and fixing process of the iron core 11 and the yoke 13, ensures the surface of the iron core 11 is flat, avoids the generation of AC noise after the iron core 11 and the yoke 13 crack, and improves the yield of the relay. The iron core 11 is inserted into the winding tube 22 and the front end of the iron core 11 extends out of the winding tube 22. The front end of the iron core 11 can be attracted or separated from the armature of the relay. The connecting part 12 stops on the outer wall surface of the second assembly plate 23. The yoke 13 is parallel to the iron core 11 and is located on the same side of the connecting part 12, which limits the length of the iron core 11 inserted into the winding tube 22 and ensures that the iron core 11 is stably installed on the coil frame 2.

[0047] Furthermore, the outer wall surface of the second assembly plate 23 is recessed with a positioning groove 24, and the connecting part 12 is engaged in the positioning groove 24. After the winding tube 22 of the coil frame 2 is inserted into the iron core part 11, the connecting part 12 of the iron part 1 and the positioning groove 24 engage with each other, improving the connection between the iron part 1 and the coil frame 2.

[0048] Furthermore, the relay also includes a short-circuit ring 3. The end of the iron core 11 furthest from the connecting portion 12 is provided with a first limiting end 111, an iron core surface 112, and a second limiting end 113. A first riveting groove 114 is formed between the iron core surface 112 and the first limiting end 111, and a second riveting groove 115 is formed between the iron core surface 112 and the second limiting end 113. The short-circuit ring 3 is fitted onto the iron core surface 112 and riveted to the first riveting groove 114 and the second riveting groove 115. The short-circuit ring 3 stops against the outer wall surface of the first assembly plate 21. The end of the iron core surface 112 furthest from the connecting portion 12 extends out of the short-circuit ring 3. The front end of the iron core 11 is riveted and fixed by the short-circuit ring 3, and the rear end of the iron core 11 is limited by a positioning slot 24, ensuring the iron core 11 is firmly installed on the coil frame 2 and improving the relay's shock resistance.

[0049] For example, the short-circuit ring 3 is made of copper. When the coil is wound on the outer wall of the winding tube 22 and connected to AC power, the short-circuit ring 3 is used to suppress the AC noise of the AC relay (the sound generated by the striking when the armature and the iron core 11 open and close).

[0050] Furthermore, each of the two inner sidewalls of the winding tube 22 is provided with a protruding structure 221, and the outer wall of the iron core 11 is sandwiched between the two protruding structures 221. In this embodiment, the protruding structure 221 is elongated. By adding the protruding structure 221, the distance between the two protruding structures 221 is not greater than the width of the iron core 11, so that the iron core 11 is firmly inserted into the winding tube 22.

[0051] Furthermore, the relay also includes a base 4 and a first positioning pin 5. The base 4 is provided with a first socket 41, a second socket 42, and a third socket 44. The first socket 41 and the second socket 42 are vertically connected, and the third socket 44 is vertically connected to the second socket 42. The end of the second assembly plate 23 away from the winding tube 22 is provided with a first insertion part 25. The first insertion part 25 is provided with a limiting hole 251. The first insertion part 25 is inserted into the first socket 41, and the first positioning pin 5 is inserted into the second socket 42 and the limiting hole 251. For example, the first socket 41 is provided on the upper surface of the base 4, and the third socket 44 is provided on the lower surface of the base 4. The first insertion part 25 of the coil frame 2 is inserted from top to bottom into the first socket 41 of the base 4. The limiting hole 251 partially overlaps with the second socket 42. The first positioning pin 5 is horizontally inserted into the second socket 42 and the limiting hole 251. When disassembly is required, use a screwdriver to insert into the third insertion hole 44 to pry the first positioning pin 5 out of the base 4.

[0052] Furthermore, the height of the limiting hole 251 relative to the bottom surface of the base 4 is greater than the height of the second insertion hole 42 relative to the bottom surface of the base 4. The first positioning pin 5 includes a first positioning segment 51 and a second positioning segment 52, which are connected in an L-shape. The first positioning segment 51 is inserted into the second insertion hole 42 and the limiting hole 251, and the second positioning segment 52 is inserted into the second insertion hole 42. Because the limiting hole 251 and the second insertion hole 42 are at different heights, the L-shaped first positioning pin 5 can further limit the position of the coil frame 2 relative to the base 4, ensuring that the coil frame 2 does not shift relative to the base 4.

[0053] Furthermore, at least one surface of the first positioning pin 5, which is located within the limiting hole 251 and the second insertion hole 42, is provided with a first protruding rib 53, which abuts against the limiting hole 251 and / or the second insertion hole 42. By adding the first protruding rib 53, the pressing force of the first positioning pin 5 on the hole wall after insertion into the hole can be increased, the friction between the two can be increased, and the stability of the limiting can be improved.

[0054] In some applications, the outer wall of the first positioning segment 51 is provided with a first protruding rib 53, the first protruding rib 53 has rounded corners, and the first protruding rib 53 abuts against the inner wall of the limiting hole 251. For example, multiple first protruding ribs 53 are provided on the lower surface of the first positioning segment 51 to increase the appropriate compressive force between the first positioning pin 5 and the limiting hole 251, and further prevent the coil frame 2 from displacing relative to the base 4 in the vertical direction.

[0055] Furthermore, the relay also includes a second positioning pin 6. The first positioning section 51 has a misalignment notch 511, and the longitudinal cross-sectional area of ​​the second positioning section 52 is smaller than the inner hole area of ​​the second insertion hole 42. The second positioning pin 6 is inserted into the second insertion hole 42 and the limiting hole 251. Because the first positioning section 51 has a misalignment notch 511, it is convenient for the second positioning pin 6 to be inserted into the limiting hole 251, so that the first positioning pin 5 and the second positioning pin 6 restrain each other and ensure that the position is firmly locked.

[0056] Furthermore, the second positioning pin 6 includes a third positioning segment 61 and a fourth positioning segment 62. The third positioning segment 61 and the fourth positioning segment 62 are connected in an L-shape. The third positioning segment 61 is inserted into the second insertion hole 42 and the limiting hole 251, with a portion of the third positioning segment 61 located within the misalignment notch 511. The fourth positioning segment 62 is inserted into the second insertion hole 42. Due to the different heights of the limiting hole 251 and the second insertion hole 42, the L-shaped second positioning pin 6 can further restrict the position of the coil frame 2 relative to the base 4, ensuring that the coil frame 2 does not shift relative to the base 4.

[0057] Furthermore, at least one surface of the second locating pin 6, which is located within the misalignment notch 511 and the second insertion hole 42, is provided with a second protruding rib 63. The second protruding rib 63 abuts against the misalignment notch 511 and / or the second insertion hole 42. By adding the second protruding rib 63, the pressing force exerted by the second locating pin 6 on the hole wall and the side wall of the misalignment notch 511 after insertion into the hole can be increased, thereby increasing the friction between them and improving the stability of the positioning. Furthermore, the second protruding rib 63 is a triangular rib.

[0058] For example, such as Figure 8 As shown, the second protruding rib 63 is set on the left and right sides of the second positioning pin 6 to further restrict the displacement of the first positioning pin 5 and the second positioning pin 6 in the left and right directions.

[0059] For example, such as Figure 9 As shown, the second protruding rib 63 is set on the upper surface of the second positioning pin 6 to further prevent the coil frame 2 from shifting relative to the base 4 in the vertical direction.

[0060] Furthermore, such as Figure 3 Combination Figure 6 As shown, one end of the first assembly plate 21 is provided with a second plug-in portion 26, and the other end of the first assembly plate 21 is provided with a support ear 27. The second plug-in portion 26 is engaged with the limiting rib 43 on the base 4, and the support ear 27 abuts against the yoke portion 13. By adding the second plug-in portion 26 and the support ear 27 to both ends of the first assembly plate 21, the iron part 1, the coil frame 2 and the base 4 are firmly connected, improving the shock resistance and reducing the AC hum generated by the relay.

[0061] In summary, the assembly method of the electromagnetic system is as follows: After the iron core 11 is inserted into the coil frame 2, the iron core 11 is riveted to the short-circuit ring 3. The first limiting end 111 and the second limiting end 113 on the left and right sides of the iron core 11 open and deform, fixing them together. The surface of the short-circuit ring 3 is the stress point, which will not damage the flatness of the iron core surface 112 in the middle of the iron core 11, and can reduce the process of riveting and fixing the iron core 11 to the yoke 13. The assembly method of the electromagnetic system and the base assembly is as follows: After the coil frame 2 on the electromagnetic system is inserted into the base 4, it is fixed with positioning pins. There are two positioning pins. After the first positioning pin 5 is inserted, the relay is in a detachable state. Then the relay performance parameters are tested. If the test is unqualified, the first positioning pin 5 is removed through the third insertion hole 44 at the bottom of the base 4 for adjustment. If the performance parameters are qualified, the second positioning pin is inserted. At this time, it is in a non-detachable state.

[0062] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A relay, characterized by The application relates to a core assembly of a transformer, which comprises an iron piece (1), a coil framework (2) and a short circuit ring (3). The iron piece (1) comprises an integral iron core part (11), a connecting part (12) and a yoke part (13), the iron core part (11) and the yoke part (13) are respectively arranged at two ends of the connecting part (12) and located at the same side of the connecting part (12), and the iron core surface (112) of the iron core part (11) and the yoke surface (116) of the yoke part (13) are located in the same plane. The coil framework (2) comprises a first assembly plate (21), a bobbin (22) and a second assembly plate (23), the first assembly plate (21) and the second assembly plate (23) are respectively arranged at two end openings of the bobbin (22), the iron core part (11) is arranged in the bobbin (22) and extends out, and the connecting part (12) is stopped at the outer wall surface of the second assembly plate (23). The iron core part (11) is provided with a first limiting end (111), the iron core surface (112) and a second limiting end (113) away from the connecting part (12), the first riveting groove (114) is formed between the iron core surface (112) and the first limiting end (111), the second riveting groove (115) is formed between the iron core surface (112) and the second limiting end (113), the short circuit ring (3) is sleeved on the iron core surface (112) and riveted with the first riveting groove (114) and the second riveting groove (115), the short circuit ring (3) is stopped at the outer wall surface of the first assembly plate (21), and the iron core surface (112) away from the connecting part (12) extends out of the short circuit ring (3). The base (4) is provided with a first insertion hole (41), a second insertion hole (42) and a third insertion hole (44), the first insertion hole (41) is vertically communicated with the second insertion hole (42), the third insertion hole (44) is vertically communicated with the second insertion hole (42), the second assembly plate (23) is provided with a first insertion part (25) away from the bobbin (22), the first insertion part (25) is provided with a limiting hole (251), the first insertion part (25) is inserted into the first insertion hole (41), and the first positioning pin (5) is inserted into the second insertion hole (42) and the limiting hole (251).

2. The relay according to claim 1, characterized in that The outer wall surface of the second assembly plate (23) is concavely provided with a positioning clamping groove (24), and the connecting part (12) is clamped in the positioning clamping groove (24).

3. The relay of claim 1, wherein The opposite two inner side walls of the bobbin (22) are respectively provided with a protruding structure (221), and the outer wall surface of the iron core part (11) is clamped between the two protruding structures (221).

4. A relay according to any one of claims 1-3, characterised in that The height of the limiting hole (251) relative to the bottom surface of the base (4) is greater than the height of the second insertion hole (42) relative to the bottom surface of the base (4), the first positioning pin (5) comprises a first positioning section (51) and a second positioning section (52), the first positioning section (51) and the second positioning section (52) are connected in an L shape, the first positioning section (51) is inserted into the second insertion hole (42) and the limiting hole (251), and the second positioning section (52) is inserted into the second insertion hole (42).

5. The relay of claim 4, wherein At least one surface of the first positioning pin (5) placed in the limiting hole (251) and the second insertion hole (42) is provided with a first raised rib (53), and the first raised rib (53) abuts against the limiting hole (251) and / or the second insertion hole (42).

6. The relay of claim 4, wherein The relay further comprises a second positioning pin (6), the first positioning section (51) is provided with a misaligned notch (511), the longitudinal cross-sectional area of the second positioning section (52) is smaller than the inner hole area of the second insertion hole (42), and the second positioning pin (6) is inserted into the second insertion hole (42) and the limiting hole (251).

7. The relay according to claim 6, characterized in that The second positioning pin (6) comprises a third positioning section (61) and a fourth positioning section (62), the third positioning section (61) and the fourth positioning section (62) are connected in an L shape, the third positioning section (61) is inserted into the second insertion hole (42) and the misaligned notch (511), and the fourth positioning section (62) is inserted into the second insertion hole (42).

8. The relay according to claim 7, characterized in that At least one surface of the second positioning pin (6) placed in the misaligned notch (511) and the second insertion hole (42) is provided with a second raised rib (63), and the second raised rib (63) abuts against the misaligned notch (511) and / or the second insertion hole (42).

9. The relay according to any one of claims 1 to 3, characterized in that One end of the first assembly plate (21) is provided with a second insertion part (26), the other end of the first assembly plate (21) is provided with a supporting lug (27), the second insertion part (26) is clamped with the limiting rib (43) on the base (4), and the supporting lug (27) abuts against the yoke part (13).

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