Magnetic circuit fixing device and relay

Abstract

The present disclosure relates to the technical field of relays. Specifically disclosed are a magnetic circuit fixing device and a relay. The magnetic circuit fixing device is used for fixing a magnetic circuit part, comprising a base and a holder fixedly assembled on the base, wherein positioning columns and dispensing grooves are formed on the holder, positioning holes are formed on the base, and an adhesive groove is formed between the base and the magnetic circuit part. The positioning columns and the dispensing grooves are respectively located on two sides of the holder that face away from each other; the positioning columns are fixedly inserted into the positioning holes, and the dispensing grooves are used for guiding glue into the adhesive groove, thereby bonding and fixing the holder, the magnetic circuit part and the base together.

Description

Magnetic circuit fixing device and relay

[0001] This disclosure claims priority to Chinese Patent Application No. 202421738483.0, filed on July 22, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of relay technology, specifically to a magnetic circuit fixing device and a relay. Background Technology

[0003] Existing relay magnetic circuit fixing devices fix the fixing plate to the base by inserting a positioning pin into a limiting groove and injecting glue into the limiting groove. In this fixing method, the glue bonding position and the insertion fixing position of the positioning pin are in the same location. Since the positioning pin is generally located on the front side of the fixing plate, this fixing method can only fix the front side of the fixing plate, resulting in insufficient installation stability on the rear side of the fixing plate. Furthermore, the glue only bonds the fixing plate to the base and does not bond and fix the magnetic circuit part located on the rear side of the fixing plate together, resulting in insufficient bonding stability and positioning reliability of the relay components. Summary of the Invention

[0004] The present disclosure aims to provide a magnetic circuit fixing device to solve the aforementioned technical problems.

[0005] To achieve the above objectives, the technical solution disclosed herein is as follows: a magnetic circuit fixing device for fixing a magnetic circuit part, including a base and a fixing frame fixedly mounted on the base. The fixing frame has a positioning post and an adhesive groove, the base has a positioning hole, and an adhesive groove is formed between the base and the magnetic circuit part. The positioning post and the adhesive groove are located on opposite sides of the fixing frame. The positioning post is fixedly inserted into the positioning hole, and the adhesive groove is used to guide the adhesive to the adhesive groove to bond and fix the fixing frame, the magnetic circuit part, and the base together.

[0006] According to some embodiments of this disclosure, the magnetic circuit portion includes a yoke, and a plurality of vertical walls are formed on the base. The yoke is engaged between the plurality of vertical walls. One of the vertical walls extends toward the yoke and forms two rib structures. The two rib structures, the vertical walls, the side wall of the yoke, and the bottom surface of the base enclose the adhesive groove.

[0007] According to some embodiments of this disclosure, the dispensing groove is located on the top of the yoke, and an adhesive outlet is provided on one side of the dispensing groove to connect with the adhesive groove.

[0008] According to some embodiments of this disclosure, the projection of the glue outlet in the vertical direction falls on the top of the yoke on the side near the glue groove.

[0009] According to some embodiments of the present disclosure, the glue dispensing groove is a long strip-shaped glue dispensing groove, and the glue outlet is located on one side of the length direction of the glue dispensing groove.

[0010] According to some embodiments of the present disclosure, the yoke iron extends in the direction of the glue groove and forms a convex petal structure.

[0011] According to some embodiments of the present disclosure, the convex petal structure is a semi-cylindrical structure.

[0012] According to some embodiments of the present disclosure, there are two positioning columns, and the two positioning columns are respectively located at the two ends of the front side of the fixed frame. There are two glue dispensing grooves, and the two glue dispensing grooves are respectively located at the two ends of the rear side of the fixed frame.

[0013] The present disclosure also provides a relay, which comprises the magnetic circuit fixing device described above.

[0014] According to some embodiments of the present disclosure, the armature assembly is rotatably arranged between the base and the fixed frame.

[0015] The present disclosure has the following beneficial effects:

[0016] 1. By dispensing glue to fix the magnetic circuit part, the base, and the fixed frame (including the parts limited by the fixed frame), the magnetic circuit part, the base, and the fixed frame form an integral whole, the bonding stability and positioning reliability of each component are higher, and even in harsh conditions such as high temperature and high humidity, low temperature, and continuous vibration, the stable anti-vibration effect can be guaranteed. Moreover, the positioning column and the glue dispensing groove are respectively located on the two sides of the fixed frame away from each other, so that the stability of the fixed frame fixedly installed on the base is higher.

[0017] 2. By arranging the glue outlet on one side of the length direction of the long strip-shaped glue dispensing groove, linear glue marking is realized, the glue marking length is longer, the bonding surface is larger, the uniform distribution of glue is beneficial, and the bonding force is greatly improved, so that the positioning reliability of each component is improved by prolonging the length of the sealing.

[0018] 3. The convex rib structure can be used for glue dispensing blocking, limiting the flow direction of the glue, and ensuring the controllability of the glue flow. The convex petal structure on the yoke iron increases the glue bonding area of the yoke iron, thereby increasing the bonding force and further improving the glue dispensing adsorption and solidification effect. BRIEF DESCRIPTION OF DRAWINGS

[0019] FIG. 1A is an assembly schematic view of the magnetic circuit fixing device according to an embodiment of the present disclosure;

[0020] FIG. 1B is an enlarged schematic view of part M in FIG. 1A;

[0021] FIG. 2A is an assembly schematic view of the yoke iron and the base according to an embodiment of the present disclosure;

[0022] FIG. 2B is an enlarged schematic view of part N in FIG. 2A.

[0023] Figure 3 is a schematic diagram of the assembly of the fixing frame and the magnetic circuit part according to an embodiment of the present disclosure;

[0024] Attached diagram labels: 1. Base, 11. Vertical wall, 12. Rib structure, 13. Positioning hole, 14. Second limiting hole, 2. Fixing frame, 21. Positioning post, 22. Glue groove, 221. Glue outlet, 23. First limiting hole, 3. Magnetic circuit part, 31. Yoke, 311. Protruding bud structure, 4. Glue groove, 5. Armature. Detailed Implementation

[0025] To further illustrate the various embodiments, this disclosure includes accompanying drawings. These drawings are part of the disclosure and are primarily used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of this disclosure. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0026] In the description of this disclosure, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure 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, and therefore should not be construed as a limitation of this disclosure. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0028] Referring to Figures 1A-3, as an embodiment of this disclosure, a magnetic circuit fixing device is provided, including a base 1 and a fixing frame 2 and a magnetic circuit portion 3 fixedly mounted on the base 1. The fixing frame 2 has a positioning post 21 and an adhesive groove 22 formed thereon. The base 1 has a positioning hole 13 formed thereon. An adhesive groove 4 is formed between the base 1 and the magnetic circuit portion 3. The positioning post 21 and the adhesive groove 22 are located on opposite sides of the fixing frame 2, respectively. The positioning post 21 is fixedly inserted into the positioning hole 13. The adhesive groove 22 is used to guide adhesive into the adhesive groove 4 to achieve the fixing frame 2 and the magnetic circuit portion 3 being fixedly mounted. The magnetic circuit part 3 and the base 1 are bonded and fixed together. By applying adhesive to fix the magnetic circuit part 3, the base 1, and the fixing frame 2 (including the parts limited by the fixing frame 2), the magnetic circuit part 3, the base 1, and the fixing frame 2 are formed as a whole. The bonding stability and positioning reliability of each component are higher, so that even under harsh conditions such as high temperature and high humidity, low temperature, and continuous vibration, a stable anti-vibration effect can be guaranteed. Moreover, since the positioning post 21 and the adhesive groove 22 are located on opposite sides of the fixing frame 2, the stability of the fixing frame 2 fixed on the base 1 is higher.

[0029] Referring to Figures 2A and 2B, in this embodiment, the magnetic circuit part 3 includes a yoke 31. Multiple vertical walls 11 are formed on the base 1. The yoke 31 is positioned between these vertical walls 11. One of the vertical walls 11 extends towards the yoke 31, forming two protruding rib structures 12. The two protruding rib structures 12, the vertical walls 11, the sidewall of the yoke 31, and the bottom surface of the base 1 enclose the adhesive groove 4. The dispensing groove 22 is located on the top of the yoke 31. A dispensing port 221, which connects to the adhesive groove 4, is provided on one side of the dispensing groove 22. The vertical projection of the dispensing port 221 falls on the top of the yoke 31 near the adhesive groove 4, allowing the adhesive in the dispensing groove 22 to flow slowly and orderly down the sidewall of the yoke 31 into the adhesive groove 4. The two protruding rib structures 12 also act as dispensing barriers, restricting the flow direction of the adhesive and ensuring controllable flow.

[0030] Of course, in other cases, the projection of the glue outlet 221 in the vertical direction can fall directly on the adhesive groove 4.

[0031] Referring to Figure 1B, in this embodiment, the dispensing groove 22 is a long strip dispensing groove with two opposite long sides. The dispensing port 221 is located on the long side of the dispensing groove 22, thereby changing the traditional dispensing to linear dispensing. The dispensing length is longer and the bonding surface is larger, which is conducive to the uniform distribution of glue and greatly improves the bonding force. Thus, by extending the sealing length, the positioning reliability of each component is improved.

[0032] Referring to Figure 2B, in this embodiment, the yoke 31 extends towards the adhesive groove 4 to form two semi-columnar protrusions 311, which can increase the adhesive area of ​​the yoke 31, thereby increasing the bonding force and improving the dispensing adsorption and curing effect. Of course, the protrusions can also be other shapes or numbers, such as hemispherical, which is not limited here.

[0033] Referring to Figure 3, in this embodiment, there are two positioning posts 21, which are located at the front ends of the fixing frame 2 respectively. There are also two glue dispensing grooves 22, which are located at the rear ends of the fixing frame 2 respectively. This allows both the front and rear sides of the fixing frame 2 to be fixed to the base 1 by the fixing structure, further improving the assembly stability, while also ensuring the reliable positioning of the magnetic circuit part 3 on the rear side of the fixing frame 2.

[0034] Referring to Figures 1A and 3, this disclosure also provides a relay, including the magnetic circuit fixing device described in the above embodiments, and further including a push card and an armature assembly 5 rotatably disposed between the base 1 and the fixing frame 2. The fixing frame 2 has a first limiting hole 23 (see Figure 3), and the base 1 has a second limiting hole 14 (see Figure 2A). The armature assembly 5 includes an armature and a rotating shaft. The rotating shaft is installed at the center of the armature. One end of the rotating shaft is rotatably installed in the first limiting hole 23, and the other end is rotatably installed in the second limiting hole 14. The relay can be fixed by a single glue application, which can ensure effective sealing between the base 1, the magnetic circuit part 3, the armature assembly, the push card, and the fixing frame 2, achieving the effect of stable vibration resistance and reliable component positioning.

[0035] Although this disclosure has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that any changes in form and detail made to this disclosure without departing from the spirit and scope of this disclosure as defined by the appended claims fall within the protection scope of this disclosure.

Claims

1. A magnetic circuit fixing device for fixing a magnetic circuit portion, characterized by: The fixing device comprises a base and a fixing frame fixedly assembled on the base, a positioning column and a glue dispensing groove are formed on the fixing frame, a positioning hole is formed on the base, a glue adhering groove is formed between the base and a magnetic circuit part, the positioning column and the glue dispensing groove are respectively located on two sides of the fixing frame away from each other, the positioning column is fixedly inserted into the positioning hole, and the glue dispensing groove is used for guiding glue into the glue adhering groove to realize adhering and fixing of the fixing frame, the magnetic circuit part and the base together.

2. The magnetic circuit fixture of claim 1, wherein: The magnetic circuit part comprises a yoke, a plurality of vertical walls are formed on the base, one of the vertical walls extends towards the yoke to form two convex rib structures, the glue adhering groove is formed between the two convex rib structures, the vertical wall and the side wall of the yoke and the bottom surface of the base.

3. The magnetic circuit fixture of claim 2, wherein: The glue dispensing groove is located on the top of the yoke, and a glue outlet is formed on one side of the glue dispensing groove and is in butt joint with the glue adhering groove.

4. The magnetic circuit fixture of claim 3, wherein: The projection of the glue outlet in the vertical direction falls on one side of the top of the yoke close to the glue adhering groove.

5. The magnetic circuit fixture of claim 3, wherein: The glue dispensing groove is a long strip-shaped glue dispensing groove, and the glue outlet is located on one side of the length direction of the glue dispensing groove.

6. The magnetic circuit fixture of claim 2, wherein: The yoke extends towards the glue adhering groove to form a convex petal structure.

7. The magnetic circuit fixture of claim 6, wherein: The convex petal structure is a semi-cylindrical structure.

8. The magnetic circuit fixture of claim 1, wherein: There are two positioning columns, and the two positioning columns are respectively located on the two ends of the front side of the fixing frame.

9. A relay characterized by: The fixing device comprises the fixing device of any one of claims 1-8.

10. The relay of claim 9, wherein: The fixing device further comprises an armature assembly rotatably arranged between the base and the fixing frame.

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