Iron core and yoke fastening structure and relay

Abstract

The utility model provides an iron core and yoke fastening structure which comprises an iron core, a coil and a yoke, the coil is wound on the iron core in the circumferential direction, external threads are arranged on the head of the iron core in the circumferential direction, and internal threaded holes correspondingly matched with the external threads are formed in the yoke. The utility model further provides a relay which comprises the iron core and yoke iron fastening structure. According to the utility model, the iron core is screwed into the yoke to realize fastening by performing internal thread processing on the original riveting hole of the yoke and performing adaptive external thread processing on the head part of the iron core, so that compared with a fastening mode of expanding riveting and then flat riveting, the assembling steps are simplified, the assembling efficiency is improved, and the assembling cost is reduced. And meanwhile, the coil, the iron core, the yoke and other parts can be reused when the parts are repaired, so that the utilization rate of the parts is improved, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of relays, in particular to an iron core and yoke iron fastening structure and a relay. Background Art

[0002] Relay products are widely used in aerospace, satellite navigation, electronic countermeasures, radar, mobile communications, test instruments and other fields due to their wide frequency band, low loss and high isolation index. With the rapid development of key projects and systems such as national weapons and equipment, mobile communications, 5G and 6G automatic test systems, as important basic components in engineering equipment such as communications, measurement and control, carrier-based aircraft, carrier-based detection radars, and ultra-long-distance ground communications, relay products are not only required to have excellent performance indicators and high working reliability, but also to put forward new requirements for product research and development, production processes and cost control, requiring relay products to be simple to assemble, high in production efficiency and low in production cost.

[0003] The electromagnetic system is one of the essential components of relay products. Its function is to convert electromagnetic energy into mechanical energy, thereby driving the movement of mechanical parts and completing the signal transmission function. At present, one of the main structures used for the electromagnetic system of such products at home and abroad is the balanced rotation type (seesaw type). When assembling the electromagnetic system of this structure, the yoke and the iron core are fastened by first expanding riveting and then flat riveting. Figure 1 As shown, it not only increases the difficulty of assembly and reduces the assembly efficiency, but also once there is a problem with riveting, it cannot be repaired, and parts such as coils, cores and yokes cannot be used again and can only be scrapped, which increases the production cost. Utility Model Content

[0004] In order to solve the above problems, the utility model aims to propose an iron core and yoke fastening structure and a relay, by processing the internal thread at the original riveting hole of the yoke and adapting the iron core head to the external thread processing, the iron core is screwed into the yoke for fastening. Compared with the fastening method of first expansion riveting and then flat riveting, the assembly steps are simplified and the assembly efficiency is improved. At the same time, parts such as coils, iron cores and yokes can be reused when the components are repaired, which improves the utilization rate of parts and reduces production costs.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A core and yoke fastening structure comprises an iron core, a coil and a yoke, wherein the iron core is circumferentially wound with the coil, an external thread is circumferentially arranged on the head of the iron core, and an internal thread hole corresponding to and matching the external thread is arranged on the yoke.

[0007] Furthermore, glue is applied circumferentially to the root of the internal threaded hole of the iron core extending out of the yoke iron.

[0008] Furthermore, it also includes a coil frame, and the coil is fixed by the coil frame and wound around the circumference of the iron core.

[0009] Furthermore, the coil frame is sleeved on the iron core, and the lower part of the coil frame is overlapped on the limiting platform at the bottom of the iron core.

[0010] Furthermore, the coil frame is circumferentially provided with winding grooves for accommodating the coil.

[0011] In order to achieve the above-mentioned purpose, the utility model also provides a relay, including the iron core and yoke iron fastening structure as mentioned above.

[0012] Beneficial effects: The utility model designs threaded holes on the yoke and matching external threads at the head of the iron core, so that the iron core is screwed into the yoke through threads to achieve the purpose of tightening. While simplifying the assembly process, it improves assembly efficiency and realizes the function of rapid response to the market. At the same time, it improves the utilization rate of parts, reduces production costs, and has considerable economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0014] Figure 1 It is a schematic diagram of the fastening structure of the conventional yoke and the iron core in the background technology of the present utility model;

[0015] Figure 2 It is a structural schematic diagram of the iron core and yoke iron fastening structure according to an embodiment of the utility model;

[0016] Figure 3 This is a schematic diagram of the iron core structure of the iron core and yoke iron fastening structure described in an embodiment of the utility model. DETAILED DESCRIPTION

[0017] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0018] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0019] When assembling a traditional balanced rotating (seesaw) structure electromagnetic system, the yoke and the core are fastened by first expansion riveting and then flat riveting. This assembly method is not only inconvenient to operate and reduces assembly efficiency, but also the component cannot be repaired once a riveting error occurs. Components such as the coil, core and yoke cannot be disassembled due to riveting and can only be scrapped, resulting in reduced parts utilization and increased production costs.

[0020] Example 1

[0021] Based on the above existing technical defects, see Figure 2-3 : A core and yoke fastening structure of this embodiment includes an iron core 1, a coil 2 and a yoke 3, the iron core 1 is circumferentially wound with the coil 2, the head of the iron core 1 is circumferentially provided with an external thread 101, and the yoke 3 is provided with an internal thread hole 301 corresponding to the external thread 101.

[0022] This embodiment can be based on the structure of a traditional balanced rotary electromagnetic system. By processing internal threads at the original riveting holes of the yoke and adapting external threads at the head of the core, the core can be screwed into the yoke for fastening. This structural design facilitates product assembly and improves assembly efficiency. At the same time, when the component is repaired, the coil, core and yoke can be reused, reducing production costs.

[0023] This embodiment solves the problems of complicated assembly steps and low assembly efficiency during the assembly process of a balanced rotating (seesaw) structure electromagnetic system, and makes up for the defect that the iron core and armature of this type of electromagnetic system cannot be repaired once a riveting error occurs, and parts such as the coil, iron core and yoke can only be scrapped.

[0024] In a specific example, glue 4 is applied circumferentially to the root of the iron core 1 extending out of the internal threaded hole 301 of the yoke 3 .

[0025] In this embodiment, a circle of glue is applied to the root of the iron core extending out of the yoke to further ensure the firmness of the assembly of the iron core and the yoke and enhance the operational reliability of the product.

[0026] In a specific example, a coil frame 5 is further included, and the coil 2 is fixed in position by the coil frame 5 and is wound around the core 1 in the circumferential direction.

[0027] In this embodiment, the coil skeleton can better limit the winding of the coil in the circumferential direction of the core, thereby improving the installation stability of the coil.

[0028] In a specific example, the coil skeleton 5 is sleeved on the iron core 1 , and the lower part of the coil skeleton 5 is overlapped on the limiting platform 102 at the bottom of the iron core 1 .

[0029] The coil frame of this embodiment is provided with a through hole in the center, so as to be directly sleeved on the iron core. The lower part of the coil frame is directly overlapped on the limit platform at the bottom of the iron core, which is convenient for installation and disassembly, and can be reused, thus reducing costs.

[0030] In a specific example, the coil frame 5 is circumferentially provided with winding grooves 501 for accommodating the coil 2 .

[0031] The coil frame of this embodiment facilitates the accommodation and winding of the coil through the winding groove, prevents the coil from being misaligned during the winding process, and improves the stability of the coil installation.

[0032] Example 2

[0033] In order to achieve the above-mentioned purpose, the present embodiment further provides a relay, comprising the iron core and yoke fastening structure as mentioned above.

[0034] The relay of this embodiment has the same advantages as the above-mentioned iron core and yoke fastening structure over the prior art, which will not be described in detail here.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A core and yoke fastening structure, characterized in that: The invention comprises an iron core (1), a coil (2) and a yoke (3); the iron core (1) is circumferentially wound with the coil (2); the head of the iron core (1) is circumferentially provided with an external thread (101); and the yoke (3) is provided with an internal thread hole (301) corresponding to and matching the external thread (101).

2. The iron core and yoke fastening structure according to claim 1, characterized in that: The root of the internal threaded hole (301) of the iron core (1) extending out of the yoke (3) is smeared with glue (4) on the circumference.

3. The iron core and yoke fastening structure according to claim 1, characterized in that: It also comprises a coil frame (5), and the coil (2) is fixed in position by the coil frame (5) and is wound around the iron core (1) in the circumferential direction.

4. The core and yoke fastening structure according to claim 3, characterized in that: The coil frame (5) is sleeved on the iron core (1), and the lower part of the coil frame (5) is overlapped on the limiting platform (102) at the bottom of the iron core (1).

5. The core and yoke fastening structure according to claim 3, characterized in that: The coil frame (5) is provided with a winding groove (501) for accommodating the coil (2) in the circumferential direction.

6. A relay, characterized in that: It comprises the iron core and yoke fastening structure as claimed in any one of claims 1 to 5.

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