Magnetic circuit fixing device and relay

Abstract

The utility model relates to the technical field of relays, and particularly discloses a magnetic circuit fixing device and a relay, the magnetic circuit fixing device comprises a base, a fixing frame and a magnetic circuit part, the fixing frame and the magnetic circuit part are fixedly assembled on the base, a positioning column and a dispensing groove are formed on the fixing frame, a positioning hole is formed on the base, and a gluing groove is formed between the base and the magnetic circuit part. The positioning column and the dispensing groove are located on the two sides, away from each other, of the fixing frame respectively, the positioning column is fixedly inserted into the positioning hole, and the dispensing groove is used for guiding glue into the gluing groove so that the fixing frame, the magnetic circuit part and the base can be bonded and fixed together. According to the utility model, the magnetic circuit part, the base and the fixing frame (including parts limited by the fixing frame) are fixed through dispensing, so that the magnetic circuit part, the base and the fixing frame form a whole body, and the bonding stability and the positioning reliability of all the parts are higher, so that even under severe conditions of high temperature, high humidity, low temperature, continuous vibration and the like, the magnetic circuit part, the base and the fixing frame cannot be damaged. And the stable anti-vibration effect can also be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of relays, in particular to a magnetic circuit fixing device and a relay. Background Art

[0002] For the existing magnetic circuit fixing device of a relay, the positioning column is inserted into the limiting groove, and glue is injected into the limiting groove to fix the fixing plate on the base. In this fixing method, the glue bonding position and the plugging and fixing position of the positioning column are at the same position. Since the positioning column 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 of the rear side of the fixing plate. Moreover, the glue only bonds and fixes the fixing plate to the base, without bonding and fixing the magnetic circuit part located on the rear side of the fixing plate, resulting in insufficient bonding stability and positioning reliability of the components of the relay. Summary of the Utility Model

[0003] The utility model aims to provide a magnetic circuit fixing device to solve the above-mentioned existing technical problems.

[0004] To achieve the above object, the technical solution of the utility model is: a magnetic circuit fixing device, including a base, a fixing frame and a magnetic circuit part fixedly assembled on the base. The fixing frame is formed with a positioning column and a glue dispensing groove, the base is formed with a positioning hole, and an adhesive groove is formed between the base and the magnetic circuit part. The positioning column and the glue dispensing groove are respectively located on two opposite sides of the fixing frame. The positioning column is fixedly inserted into the positioning hole, and the glue dispensing groove is used to guide glue to the adhesive groove to fix the fixing frame, the magnetic circuit part and the base together by bonding.

[0005] Preferably, the magnetic circuit part includes a yoke. The base is formed with a plurality of vertical walls, and the yoke is clamped between the plurality of vertical walls. One of the vertical walls extends towards the yoke to form two rib structures, and the adhesive groove is formed by enclosing between the two rib structures, the vertical wall, the side wall of the yoke and the bottom surface of the base.

[0006] Preferably, the glue dispensing groove is located at the top of the yoke, and a glue outlet communicating with the adhesive groove is formed on one side of the glue dispensing groove.

[0007] Preferably, the projection of the glue outlet in the vertical direction falls on one side of the top of the yoke close to the adhesive groove.

[0008] Preferably, the glue dispensing groove is a strip-shaped glue dispensing groove, and the glue outlet is located on one side in the length direction of the glue dispensing groove.

[0009] Preferably, the yoke extends towards the adhesive groove to form a convex bud structure.

[0010] Preferably, the convex bud structure is semi-columnar.

[0011] Preferably, there are two positioning posts, which are respectively located at both front ends of the fixing frame, and there are two dispensing grooves, which are respectively located at both rear ends of the fixing frame.

[0012] The utility model also provides a relay, including the magnetic circuit fixing device described in any one of the above.

[0013] Preferably, it further includes an armature assembly rotatably arranged between the base and the fixing frame.

[0014] The utility model has the following beneficial effects:

[0015] 1. By dispensing and fixing the magnetic circuit part, the base, and the fixing frame (including the parts limited by the fixing frame), the magnetic circuit part, the base, and the fixing frame form an integral whole, and 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 ensured; and since the positioning posts and the dispensing grooves are respectively located on two opposite sides of the fixing frame, the stability of the fixing frame fixed on the base is higher.

[0016] 2. By arranging the glue outlet on one side of the length direction of the long-strip dispensing groove, linear glue scribing is realized, the scribing length is longer, the bonding surface is larger, which is beneficial to the uniform distribution of the glue and greatly improves the bonding force, thereby improving the positioning reliability of each component by extending the sealing length.

[0017] 3. Through the rib structure, the dispensing partition can be taken into account, the flow direction of the glue is restricted, and the flow direction of the glue can be ensured to be controllable. Then, through the convex bud structure on the yoke iron, the bonding area of the yoke iron is increased, thereby increasing the bonding force and further improving the dispensing adsorption and curing effect. Description of the Drawings

[0018] Figure 1 is the assembly schematic diagram and partial enlarged schematic diagram of the magnetic circuit fixing device of the embodiment of the utility model;

[0019] Figure 2 is the assembly schematic diagram and partial enlarged schematic diagram of the yoke iron and the base of the embodiment of the utility model;

[0020] Figure 3 is the assembly schematic diagram of the fixing frame and the magnetic circuit part of the embodiment of the utility model;

[0021] Reference numerals in the drawings: 1 base, 11 vertical wall, 12 rib structure, 13 positioning hole, 14 second limiting hole, 2 fixing frame, 21 positioning post, 22 dispensing groove, 221 glue outlet, 23 first limiting hole, 3 magnetic circuit part, 31 yoke iron, 311 convex bud structure, 4 adhesive groove, 5 armature. Detailed Embodiment

[0022] To further illustrate the embodiments, the present utility model provides accompanying drawings. These drawings are a part of the disclosure of the present utility model, mainly used to illustrate the embodiments, and can cooperate with the relevant descriptions in the specification to explain the operating principle of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present utility model. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0023] In the description of the present utility model, unless otherwise specified, "a plurality of" means two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0024] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] Referring to Figures 1-3 As shown, as an embodiment of the present utility model, a magnetic circuit fixing device is provided, which includes a base 1, a fixing frame 2 and a magnetic circuit part 3 fixedly assembled on the base 1. A positioning post 21 and a glue dispensing groove 22 are formed on the fixing frame 2, a positioning hole 13 is formed on the base 1, and an adhesive groove 4 is formed between the base 1 and the magnetic circuit part 3. The positioning post 21 and the glue dispensing groove 22 are respectively located on two opposite sides of the fixing frame 2. The positioning post 21 is fixedly inserted into the positioning hole 13, and the glue dispensing groove 22 is used to guide glue into the adhesive groove 4 to bond and fix the fixing frame 2, the magnetic circuit part 3 and the base 1 together. By dispensing glue 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 form an integral body, and 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 ensured; and since the positioning post 21 and the glue dispensing groove 22 are respectively located on two opposite sides of the fixing frame 2, the stability of the fixing frame 2 fixedly installed on the base 1 is higher.

[0026] In this embodiment, the magnetic circuit part 3 includes a yoke 31. A plurality of vertical walls 11 are formed on the base 1. The yoke 31 is clamped between the plurality of vertical walls 11. One of the vertical walls 11 extends towards the yoke 31 to form two rib structures 12. The two rib structures 12, the vertical wall 11, the side wall of the yoke 31 and the bottom surface of the base 1 enclose to form the adhesive groove 4. The dispensing groove 22 is located at the top of the yoke 31. An adhesive outlet 221 communicating with the adhesive groove 4 is formed on one side of the dispensing groove 22. The projection of the adhesive outlet 221 in the vertical direction falls on one side of the top of the yoke 31 close to the adhesive groove 4, so that the glue in the dispensing groove 22 can slowly and orderly flow down into the adhesive groove 4 through the side wall of the yoke 31. The two rib structures 12 can take into account the dispensing barrier, limit the flow direction of the glue, and ensure that the flow direction of the glue is controllable.

[0027] Of course, in other cases, it is also acceptable that the projection of the adhesive outlet 221 in the vertical direction directly falls on the adhesive groove 4.

[0028] In this embodiment, the dispensing groove 22 is a long-strip dispensing groove, and the adhesive outlet 221 is located on one side in the length direction of the dispensing groove 22, so as to change the traditional dispensing to linear scribing. The scribing length is longer, the bonding surface is larger, which is beneficial to the uniform distribution of the glue and greatly improves the bonding force, thereby improving the positioning reliability of each component by extending the length of the sealing.

[0029] In this embodiment, the yoke 31 extends towards the adhesive groove 4 to form two semi-columnar convex bud structures 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 convex bud structure can also be other shapes or quantities, such as hemispherical, which is not limited here.

[0030] In this embodiment, there are two positioning posts 21, and the two positioning posts 21 are respectively located at the front ends of the fixing frame 2. There are two dispensing grooves 22, and the two dispensing grooves 22 are respectively located at the rear ends of the fixing frame 2, so that both the front and rear sides of the fixing frame 2 can be fixed on the base 1 through the fixing structure, further improving the assembly stability, and at the same time taking into account the reliable positioning of the magnetic circuit part 3 at the rear side of the fixing frame 2.

[0031] The present utility model further provides a relay, which includes the magnetic circuit fixing device described in the above embodiment, and further includes a push card and an armature assembly 5 rotatably arranged between a base 1 and a fixing bracket 2. Among them, a first limiting hole 23 is formed on the fixing bracket 2, and a second limiting hole 14 is formed on the base 1. 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. By fixing with one-time dispensing, the effective sealing between the base 1, the magnetic circuit part 3, the armature assembly, the push card, and the fixing bracket 2 can be ensured, achieving the effects of firm vibration resistance and reliable positioning of components.

[0032] Although the present utility model is specifically shown and introduced in combination with the preferred implementation, those skilled in the art should understand that various changes made to the present utility model in form and details without departing from the spirit and scope of the present utility model defined by the appended claims all fall within the protection scope of the present utility model.

Claims

1. A magnetic circuit fixing device, characterized in that: It includes a base and a fixing frame and a magnetic circuit part 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, an adhesive groove is formed between the base and the magnetic circuit part, and 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 in the positioning hole, and the glue dispensing groove is used to guide glue into the adhesive groove to achieve bonding and fixing the fixing frame, the magnetic circuit part and the base together.

2. The magnetic circuit fixing device according to claim 1, characterized in that: The magnetic circuit part includes a yoke, and a plurality of vertical walls are formed on the base. The yoke is clamped between the plurality of vertical walls, and one of the vertical walls extends toward the yoke to form two convex rib structures. The two convex rib structures, the vertical walls, the side walls of the yoke and the bottom surface of the base form the adhesive groove.

3. The magnetic circuit fixing device according to claim 2 is characterized in that: The glue dispensing groove is located at the top of the yoke iron, and a glue outlet connected to the adhesive groove is opened on one side of the glue dispensing groove.

4. The magnetic circuit fixing device according to claim 3 is characterized in that: The projection of the glue outlet in the vertical direction falls on the top of the yoke close to the side of the glue groove.

5. The magnetic circuit fixing device according to claim 3 is characterized in that: The glue dispensing groove is a long strip 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 fixing device according to claim 2, characterized in that: The yoke iron extends toward the adhesive groove to form a convex bud structure.

7. The magnetic circuit fixing device according to claim 6, characterized in that: The convex structure is semi-columnar.

8. The magnetic circuit fixing device according to claim 1, characterized in that: There are two positioning posts, which are respectively located at two ends of the front side of the fixing frame, and there are two glue dispensing grooves, which are respectively located at two ends of the rear side of the fixing frame.

9. A relay, characterized in that: It comprises the magnetic circuit fixing device described in any one of claims 1 to 8.

10. The relay according to claim 9, characterized in that: The invention also comprises an armature assembly which is rotatably arranged between the base and the fixing frame.

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