CN213583314U

CN213583314U - Tunable inductor

Info

Publication number: CN213583314U
Application number: CN202023008095.1U
Authority: CN
Inventors: 伍仕超
Original assignee: Shenzhen Chengda Yonghe Electronics Co ltd
Current assignee: Shenzhen Chengda Yonghe Electronics Co ltd
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2021-06-29
Anticipated expiration: 2030-12-15

Abstract

The utility model discloses a tunable inductor, which is provided with a first coil with a first terminal lead wire, a second coil with a second terminal lead wire with the same direction as the first terminal lead wire, and a connecting bridge arranged opposite to the lead wire of the first terminal and the second terminal lead wire, wherein the connecting bridge connects the first coil and the second coil to ensure that the first coil and the second coil are connected in series and the first coil and the second coil are arranged at intervals; the top of the connecting bridge is provided with a tuning assembly; the current generates a magnetic flux in both the first coil and the second coil, the lead wire of the first terminal and the lead wire of the second terminal are respectively connected in series with the connection bridge, and a downward or upward force is provided to the connection bridge by an external force to respectively reduce or increase a space between the first coil and the second coil to increase or decrease an inductance, thereby increasing a tunable value range.

Description

Tunable inductor

Technical Field

The utility model belongs to the inductance field especially relates to a tunable inductance.

Background

As the demand for miniaturization of electronic devices is higher and higher, inductors are also developed toward miniaturized components, and the performance and technical requirements of inductors are higher and higher.

The existing tunable inductor has a series of defects in the tunable filter, such as a small tunable value range, a low radio frequency power level, a low capacitor quality factor, a large magnetic circuit approaching leakage loss, and the like, and thus a new tunable inductor is needed in view of the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model provides a tunable inductance, the above-mentioned problem of solution.

In order to solve the above problem, the utility model provides a technical scheme as follows: the tunable inductor is provided with a first coil with a first terminal lead wire, a second coil with a second terminal lead wire in the same direction as the first terminal lead wire, and a connecting bridge is arranged opposite to the lead wire of the first terminal and the second terminal lead wire and is used for connecting the first coil and the second coil so that the first coil and the second coil are connected in series and are arranged at intervals; the top of the connecting bridge is provided with a tuning assembly; the current generates a magnetic flux in both the first coil and the second coil.

Preferably, the tuning assembly is a device that can vary the upward or downward force of the connecting bridge; the tuning assembly is a connecting plate, and the connecting plate is connected with the triggering end of the electric control device of the external equipment.

Preferably, the first coil and the second coil are wound on the magnetic core, a lead of the first terminal of the first coil extends outward to be connected with one end of the connecting bridge, and a lead of the second terminal of the second coil extends outward to be connected with the other end of the connecting bridge.

Preferably, the first coil and the second coil are sleeved on the outer periphery of the magnetic core, the lead of the first terminal is arranged on the rear end face of the magnetic core, and the lead of the second terminal is arranged on the front end face of the magnetic core.

Preferably, a groove is formed in the bottom surface or the top surface of the magnetic core, a gasket is placed inside the groove, and the height of the first coil and the height of the second coil on the surface of the magnetic core are adjusted.

Compared with the prior art, the technical scheme has the advantages that the lead of the first terminal and the lead of the second terminal are respectively connected with the connecting bridge in series, and downward or upward force is provided for the connecting bridge through external force so as to respectively reduce or increase the space between the first coil and the second coil to increase or reduce the inductance, thereby increasing the tunable value range.

Drawings

In order to illustrate the embodiments or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for a person skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a general schematic diagram of the structure of the present invention.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "fixed," "integrally formed," "left," "right," and the like are used for descriptive purposes only and in the following drawings, elements having similar structures are identified by the same reference numerals.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

As shown in fig. 1, an embodiment of the present invention is: the tunable inductor is provided with a first coil 2 with a first terminal lead wire, a second coil 3 with a second terminal lead wire in the same direction as the first terminal lead wire, a connecting bridge 4 is arranged opposite to the lead wire of the first terminal and the second terminal lead wire, the connecting bridge 4 is used for connecting the first coil 2 and the second coil 3, the first coil 2 and the second coil 3 are connected in series, and the first coil 2 and the second coil 3 are arranged at intervals; the top of the connecting bridge 4 is provided with a tuning component; the current generates a magnetic flux in both the first coil and the second coil.

Preferably, the tuning assembly is a device that can vary the upward or downward force of the connecting bridge; the tuning assembly is the connecting plate, the connecting plate is connected with external equipment's electrically controlled device trigger end, and further, the connecting plate is insulating material and the synthetic material of shielding nature material, for example: a conductive rubber plate.

Preferably, the first coil 2 and the second coil 3 are wound on the magnetic core, a lead of a first terminal of the first coil 2 extends outward to be connected with one end of the connecting bridge 4, and a lead of a second terminal of the second coil 3 extends outward to be connected with the other end of the connecting bridge 4.

Preferably, the first coil 2 and the second coil 3 are sleeved on the outer periphery of the magnetic core, the lead of the first terminal is arranged on the rear end face of the magnetic core, and the lead of the second terminal is arranged on the front end face of the magnetic core.

Further, the terminal leads of each coil of the variable inductor are straight and oriented in the same direction for easy mounting on a PCB or similar circuit board 1. Therefore, the tunable inductor of the present application has a predictable and consistent inductance value, and even if it is a higher quality factor Qb high frequency application after multiple tuning, the tunable inductor has a higher inductance value accuracy.

It should be noted that the above technical features are continuously combined with each other to form various embodiments which are not listed above, and all the embodiments are regarded as the scope of the present invention described in the specification; moreover, modifications and variations will occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the invention as defined by the appended claims.

Claims

1. The tunable inductor is characterized in that a first coil with a first terminal lead wire and a second coil with a second terminal lead wire in the same direction as the first terminal lead wire are arranged, a connecting bridge is arranged opposite to the lead wire of the first terminal and the second terminal lead wire, the connecting bridge is used for connecting the first coil and the second coil, the first coil and the second coil are connected in series, and the first coil and the second coil are arranged at intervals; the top of the connecting bridge is provided with a tuning assembly; the current generates a magnetic flux in both the first coil and the second coil.

2. The tunable inductor of claim 1, wherein the tuning component is a device that can vary the upward or downward force of the connecting bridge; the tuning assembly is a connecting plate, and the connecting plate is connected with the triggering end of the electric control device of the external equipment.

3. The tunable inductor of claim 1, wherein the first coil and the second coil are wound on a magnetic core, and wherein a lead of the first terminal of the first coil extends outward to connect with one end of the connecting bridge, and a lead of the second terminal of the second coil extends outward to connect with the other end of the connecting bridge.

4. The tunable inductor of claim 3, wherein the first coil and the second coil are sleeved around the outer periphery of the magnetic core, the lead of the first terminal is at the rear end face of the magnetic core, and the lead of the second terminal is at the front end face of the magnetic core.

5. The tunable inductor of claim 3, wherein the bottom surface or the top surface of the magnetic core is provided with a groove, a spacer is placed inside the groove, and the height of the first coil and the second coil on the surface of the magnetic core is adjusted.