Film inductor Q value detection jig
By designing a thin film inductor Q value detection fixture and using a four-wire and four-pin method for testing, the problem of large error in traditional methods in low-value resistance measurement is solved, and a more stable and high-precision test effect is achieved.
Patent Information
- Application Number
- CN202421943096.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-12
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-08-12
AI Technical Summary
The traditional four-wire two-pin method is difficult to accurately measure when measuring low-value resistances, and may introduce large measurement errors, limiting its application in high-precision measurement occasions.
A thin film inductor Q value detection fixture was designed, and the test was tested using four-wire and four-pin method. Through the design of the detection joint and the test needle, the stability and accuracy of the test were ensured.
A more stable Q-value test effect is achieved, reducing measurement errors and improving the accuracy of the test.
Smart Images
Figure CN223038054U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of thin-film inductor Q-value detection, and specifically relates to a thin-film inductor Q-value detection fixture. Background Technique
[0002] The Q-value of a thin-film inductor, also known as the quality factor of the inductor, is an important parameter for measuring the performance of a thin-film inductor. It represents the ratio of the inductive reactance to the equivalent loss resistance presented by the inductor when operating under an AC voltage at a certain frequency. Specifically, the higher the Q-value of the thin-film inductor, the smaller the loss and the higher the efficiency. The Q-value of a thin-film inductor is an important parameter for measuring the performance of a thin-film inductor, and it represents the ratio of the inductive reactance to the equivalent loss resistance presented by the inductor when operating under an AC voltage at a certain frequency. Thin-film inductors have characteristics such as high Q-value, high-frequency stability, and small volume, and are widely used in radio frequency and microwave circuits. When selecting a thin-film inductor, it is necessary to select an appropriate Q-value and parameters according to specific application scenarios and requirements.
[0003] In the traditional four-wire two-needle method, due to the existence of wire resistance and contact resistance, it is difficult to accurately measure low-value resistors. When measuring very small resistance values, the wire resistance and contact resistance in the four-wire two-needle method may not be completely ignored, thus introducing a large measurement error, which limits its application in high-precision measurement occasions. And since the measurement of current and voltage may still be affected by some thermoelectromotive forces, in some cases, the measurement results of the four-wire two-needle method may not be stable or accurate enough.
[0004] Therefore, a thin-film inductor Q-value detection fixture is proposed. Content of the Utility Model
[0005] The purpose of the utility model is to provide a thin-film inductor Q-value detection fixture to solve the problems raised in the above background technique.
[0006] To achieve the above purpose, the utility model provides the following technical solution: A thin-film inductor Q-value detection fixture, including a detection table, a placement groove is opened at the top of the detection table, a fixing groove is opened inside the detection table, and a connection groove is opened at the top of the detection table; a detection joint is arranged on the front of the detection table; a placement table is arranged in the placement groove opened on the detection table, and a test hole is opened at the top of the placement table; a test needle is arranged in the test hole opened on the placement table; a protection component is arranged on the top of the detection table; a positioning component is arranged in the placement groove opened on the detection table.
[0007] Preferably, the detection joint is fixedly installed on the front of the detection table, the test needle is connected to the detection joint, and the test needle is adapted to the test hole.
[0008] Preferably, the protection component includes: a first connecting block disposed on one side of the detection table, and a connecting hole is formed in the front surface of the first connecting block; one side of the first connecting block is fixedly connected to one side of the detection table, a first fixing rod is fixedly connected in the connecting hole of the first connecting block, and an L-shaped engaging plate is rotatably sleeved on the outer wall of the first fixing rod.
[0009] Preferably, the protection component includes: a second fixing rod disposed in a connecting groove formed in the detection table; one end of the second fixing rod is fixedly connected to one side inner wall of the connecting groove, the other end of the second fixing rod is fixedly connected to the other side inner wall of the connecting groove, a second connecting block is rotatably sleeved on the outer wall of the second fixing rod, a protection cover plate is fixedly connected to one side of the second connecting block, and a torsion spring is sleeved on the outer wall of the second fixing rod.
[0010] Preferably, one end of the torsion spring contacts one side of the connecting groove, the other end of the torsion spring contacts one side of the protection cover plate, a engaging groove is formed in one side of the protection cover plate, a movable groove is formed in one side of the protection cover plate and is adapted to the placement groove, and the engaging groove of the protection cover plate is adapted to the L-shaped engaging plate. Through this protection component, the test in the four-wire four-pin method can be well achieved, and the Q value can be made more stable.
[0011] Preferably, the positioning component includes: a telescopic rod disposed in a fixing groove formed in the detection table; the bottom of the telescopic rod is fixedly connected to the bottom inner wall of the fixing groove, a T-shaped block is fixedly connected to the telescopic end of the telescopic rod, a first movable plate is rotatably connected to one side of the T-shaped block, and a third movable plate is rotatably connected to one side of the T-shaped block.
[0012] Preferably, the telescopic end of the telescopic rod penetrates through the top inner wall of the fixing groove and extends into the placement groove to be fixedly connected to the bottom of the T-shaped block, a positioning pressing block is rotatably connected to one end of the first movable plate, a second movable plate is rotatably connected to one side of the positioning pressing block, and a fixing block is rotatably connected to one side of the second movable plate.
[0013] Preferably, the bottom of the fixing block is fixedly connected to the bottom inner wall of the placement groove, and the other side of the second movable plate is rotatably connected to one end of the third movable plate. Through this positioning component, the positioning pressing block can well position and fix the thin film, preventing the position of the thin film from shifting and affecting the test effect.
[0014] The utility model provides a thin film inductance Q value detection jig. It has the following beneficial effects:
[0015] (1). The utility model places the film to be tested on the placement table, fixes it through the positioning component, then swings the protective cover plate to cover it, and then swings the L-shaped clamping plate to engage with the protective cover plate to prevent the influence of external factors. Then, the test is carried out through the detection joint and the test needle, and a total of four groups of test needles are provided for the detection joint and the test needle, so as to achieve the effect of making the test Q value more stable through the four-wire and four-needle method.
[0016] (2). The utility model places the film to be tested on the placement table, then starts the telescopic rod. The operation of the telescopic rod drives the T-shaped block to move, and the movement of the T-shaped block drives the first movable plate and the third movable plate to move. The movement of the first movable plate and the third movable plate drives the positioning extrusion block and the second movable plate to move. The second movable plate is limited by the fixed block to itself, so as to limit the positioning extrusion block, so as to achieve the effect of positioning and fixing the film by the positioning extrusion block and preventing the position of the film from shifting and affecting the test. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a three-dimensional view of the utility model;
[0018] Figure 2 is a schematic cross-sectional structure view of the utility model;
[0019] Figure 3 is the utility model Figure 2 magnified view of A in;
[0020] Figure 4 is the utility model Figure 2 magnified view of B in.
[0021] In the figure: 1 detection table, 2 detection joint, 3 placement table, 4 test needle, 5 protection component, 511 connecting block one, 512 fixing rod one, 513 L-shaped clamping plate, 514 fixing rod two, 515 torsion spring, 516 connecting block two, 517 protection cover plate, 6 positioning component, 611 telescopic rod, 612 T-shaped block, 613 first movable plate, 614 positioning extrusion block, 615 second movable plate, 616 fixing block, 617 third movable plate. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0023] Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals throughout denote the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present utility model, and should not be construed as limiting the present utility model.
[0024] Embodiment 1
[0025] A preferred embodiment of a thin-film inductor Q-value detection fixture provided by the present utility model is as Figures 1-4 shown: A thin-film inductor Q-value detection fixture includes a detection table 1, a placement groove is opened at the top of the detection table 1, a fixing groove is opened inside the detection table 1, and a connection groove is opened at the top of the detection table 1; a detection joint 2 is arranged on the front surface of the detection table 1; a placement table 3 is arranged in the placement groove opened on the detection table 1, and a test hole is opened at the top of the placement table 3; a test needle 4 is arranged in the test hole opened on the placement table 3; a protection component 5 is arranged on the top of the detection table 1; a positioning component 6 is arranged in the placement groove opened on the detection table 1.
[0026] The detection joint 2 is fixedly installed on the front surface of the detection table 1, the test needle 4 is connected with the detection joint 2, and the test needle 4 is adapted to the test hole.
[0027] The protection component 5 includes: a first connection block 511, which is arranged on one side of the detection table 1, and a connection hole is opened on the front surface of the first connection block 511; one side of the first connection block 511 is fixedly connected with one side of the detection table 1, a first fixing rod 512 is fixedly connected in the connection hole of the first connection block 511, and an L-shaped clamping plate 513 is rotatably sleeved on the outer wall of the first fixing rod 512.
[0028] The protection component 5 includes: a second fixing rod 514, which is arranged in the connection groove opened on the detection table 1; one end of the second fixing rod 514 is fixedly connected with one side inner wall of the connection groove, the other end of the second fixing rod 514 is fixedly connected with the other side inner wall of the connection groove, a second connection block 516 is rotatably sleeved on the outer wall of the second fixing rod 514, a protection cover plate 517 is fixedly connected to one side of the second connection block 516, and a torsion spring 515 is sleeved on the outer wall of the second fixing rod 514.
[0029] One end of the torsion spring 515 contacts one side of the connection groove, the other end of the torsion spring 515 contacts one side of the protection cover plate 517, a clamping groove is opened on one side of the protection cover plate 517, a movable groove is opened on one side of the protection cover plate 517, and the movable groove is adapted to the placement groove, and the clamping groove of the protection cover plate 517 is adapted to the L-shaped clamping plate 513.
[0030] Further, in this embodiment, the thin film to be tested is placed on the placement table 3, fixed by the positioning component 6, covered by swinging the protective cover plate 517, and then the L-shaped engaging plate 513 is swung to engage with the protective cover plate 517 to prevent the influence of external factors. Then, the detection joint 2 and the test needle 4 are used for testing, and a total of four groups of test needles are provided for the detection joint 2 and the test needle 4, so as to achieve the test in the four-wire and four-needle mode and make the Q value more stable.
[0031] Embodiment 2
[0032] On the basis of Embodiment 1, a preferred embodiment of the thin film inductor Q value detection fixture provided by the present utility model is as Figures 1-4 shown: The positioning component 6 includes: a telescopic rod 611, which is arranged in the fixing groove opened on the detection table 1; the bottom of the telescopic rod 611 is fixedly connected to the bottom of the inner wall of the fixing groove, and the telescopic end of the telescopic rod 611 is fixedly connected to a T-shaped block 612. One side of the T-shaped block 612 is rotatably connected to a first movable plate 613, and one side of the T-shaped block 612 is rotatably connected to a third movable plate 617.
[0033] The telescopic end of the telescopic rod 611 penetrates through the top of the inner wall of the fixing groove and extends into the placement groove to be fixedly connected to the bottom of the T-shaped block 612. One end of the first movable plate 613 is rotatably connected to a positioning extrusion block 614. One side of the positioning extrusion block 614 is rotatably connected to a second movable plate 615, and one side of the second movable plate 615 is rotatably connected to a fixing block 616.
[0034] The bottom of the fixing block 616 is fixedly connected to the bottom of the inner wall of the placement groove, and the other side of the second movable plate 615 is rotatably connected to one end of the third movable plate 617.
[0035] Further, in this embodiment, the thin film to be tested is placed on the placement table 3, and then the telescopic rod 611 is started. The operation of the telescopic rod 611 drives the T-shaped block 612 to move. The movement of the T-shaped block 612 drives the first movable plate 613 and the third movable plate 617 to move. The movement of the first movable plate 613 and the third movable plate 617 drives the positioning extrusion block 614 and the second movable plate 615 to move. The second movable plate 615 is limited by the fixing block 616 to achieve the limitation of the positioning extrusion block 614, so as to fix the thin film by the positioning extrusion block 614 and prevent the position of the thin film from shifting and affecting the test.
[0036] In use, place the thin film to be tested on the placement table 3, then start the telescopic rod 611. The operation of the telescopic rod 611 drives the movement of the T-shaped block 612. The movement of the T-shaped block 612 drives the movement of the first movable plate 613 and the third movable plate 617. The movement of the first movable plate 613 and the third movable plate 617 drives the movement of the positioning extrusion block 614 and the second movable plate 615. The second movable plate 615 limits itself through the fixed block 616 to limit the positioning extrusion block 614, so as to fix the position of the thin film by the positioning extrusion block 614 and prevent the position of the thin film from shifting. Then swing the protective cover plate 517 to cover it, and then swing the L-shaped clamping plate 513 to engage with the protective cover plate 517 to prevent the influence of external factors. Then, perform a test through the detection connector 2 and the test needle 4. And four groups of test needles are provided for the detection connector 2 and the test needle 4 to achieve a four-wire and four-needle test method, making the Q value more stable.
[0037] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A thin film inductor Q value detection fixture, characterized in that: The invention comprises a testing platform (1), wherein a placement groove is provided on the top of the testing platform (1), a fixing groove is provided inside the testing platform (1), and a connection groove is provided on the top of the testing platform (1); A detection connector (2) is arranged on the front side of the detection platform (1); A placement table (3) is arranged in a placement groove provided on the detection table (1), and a test hole is provided on the top of the placement table (3); A test needle (4) is arranged in a test hole provided on the placement platform (3); A protective component (5) is arranged on the top of the detection platform (1); The positioning component (6) is arranged in a placement groove provided in the detection platform (1).
2. The thin film inductor Q value detection jig according to claim 1, characterized in that: The detection connector (2) is fixedly mounted on the front side of the detection platform (1), the test needle (4) is connected to the detection connector (2), and the test needle (4) is adapted to the test hole.
3. The thin film inductor Q value detection jig according to claim 1, characterized in that: The protection component (5) comprises: A connection block (511) is arranged on one side of the detection platform (1), and a connection hole is provided on the front side of the connection block (511); One side of the connecting block 1 (511) is fixedly connected to one side of the detection platform (1); a fixing rod 1 (512) is fixedly connected in the connecting hole of the connecting block 1 (511); and an L-shaped clamping plate (513) is rotatably sleeved on the outer wall of the fixing rod 1 (512).
4. The thin film inductor Q value detection jig according to claim 1, characterized in that: The protection component (5) comprises: A second fixing rod (514) is arranged in a connection groove provided in the testing platform (1); One end of the second fixing rod (514) is fixedly connected to one side of the inner wall of the connecting groove, and the other end of the second fixing rod (514) is fixedly connected to the other side of the inner wall of the connecting groove. The outer wall of the second fixing rod (514) is rotatably sleeved with a second connecting block (516), one side of the second connecting block (516) is fixedly connected with a protective cover plate (517), and the outer wall of the second fixing rod (514) is sleeved with a torsion spring (515).
5. The thin film inductor Q value detection jig according to claim 4, characterized in that: One end of the torsion spring (515) contacts one side of the connecting groove, and the other end of the torsion spring (515) contacts one side of the protective cover plate (517). A snap-fit groove is provided on one side of the protective cover plate (517). A movable groove is provided on one side of the protective cover plate (517), and the movable groove is matched with the placement groove. The snap-fit groove of the protective cover plate (517) is matched with the L-shaped snap-fit plate (513).
6. The thin film inductor Q value detection jig according to claim 1, characterized in that: The positioning component (6) comprises: A telescopic rod (611) is arranged in a fixed groove provided in the testing platform (1); The bottom of the telescopic rod (611) is fixedly connected to the bottom of the inner wall of the fixed groove, the telescopic end of the telescopic rod (611) is fixedly connected to a T-shaped block (612), one side of the T-shaped block (612) is rotatably connected to a movable plate one (613), and one side of the T-shaped block (612) is rotatably connected to a movable plate three (617).
7. The thin film inductor Q value detection jig according to claim 6, characterized in that: The telescopic end of the telescopic rod (611) passes through the top of the inner wall of the fixed groove and extends into the placement groove to be fixedly connected to the bottom of the T-block (612); one end of the movable plate 1 (613) is rotatably connected to a positioning extrusion block (614); one side of the positioning extrusion block (614) is rotatably connected to the movable plate 2 (615); and one side of the movable plate 2 (615) is rotatably connected to a fixed block (616).
8. The thin film inductor Q value detection jig according to claim 7, characterized in that: The bottom of the fixed block (616) is fixedly connected to the bottom of the inner wall of the placement groove, and the other side of the movable plate 2 (615) is rotatably connected to one end of the movable plate 3 (617).