Hairpin type flat wire inductor
By introducing protective blocks and rotating block structures into flat wire inductors, the problem of easily damaged pins is solved, and the pins are reinforced and protected, and the magnetic core is quickly connected, thereby improving the reliability and ease of operation of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO FILT TECH ELECTRONICS
- Filing Date
- 2025-01-14
- Publication Date
- 2026-05-05
AI Technical Summary
The leads of existing flat wire inductors are easily damaged by bending during use, and lack a protective mechanism.
A structure including a magnetic core, coil, pins, protective block, fixing block, insertion block, rotating block, and movable spring is designed. The pins are reinforced and protected by the cooperation of the rotating block and the insertion block, and the magnetic core is quickly connected and fixed to the package shell by the cooperation of the wedge block and the retaining ring.
It effectively protects the pins from damage, improves the lifespan of flat wire inductors, and simplifies the connection and removal process between the core and the package.
Smart Images
Figure CN224203939U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of flat wire inductor technology, specifically a hairpin-type flat wire inductor. Background Technology
[0002] Hairpin flat wire inductors are a special type of inductor typically used in high-frequency applications, offering high efficiency and a small size. These inductors are named for their unique shape, with leads bent into a hairpin-like form, resulting in a flat wire structure. This design helps improve heat dissipation, reduce parasitic capacitance, and allows for higher inductance values within a limited space.
[0003] In existing flat wire inductors, the pins are very long for easy connection, and there is no protective mechanism at the connection point. This makes the pins prone to damage due to bending during use, thus failing to provide pin protection. Utility Model Content
[0004] The purpose of this invention is to provide a hairpin-type flat wire inductor to solve the problem mentioned in the background art that the pins of currently used flat wire inductors are not protected during use, thus making them prone to damage.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a hairpin-type flat wire inductor, comprising: a magnetic core and pins, wherein a coil is wound around the outer side of the magnetic core, a package shell is installed on one side of the magnetic core, and the pins are connected to one end of the coil;
[0006] A protective block is sleeved on the outside of the pin, and a fixing block is connected to both sides of the protective block. A plug is installed on the top of the fixing block.
[0007] Preferably, a rotating block is connected to one side of the insert block via a rotating shaft, and a movable spring is connected between the rotating block and the groove of the insert block.
[0008] Preferably, a movable block is provided on one side of the rotating block, and a push block is connected to one side of the movable block through the encapsulation shell.
[0009] Preferably, a protrusion is installed at one end of the encapsulation shell, and a telescopic spring is installed inside the protrusion.
[0010] Preferably, a wedge-shaped block is installed through the protrusion on one side of the telescopic spring, and a retaining ring is sleeved on one end of the wedge-shaped block.
[0011] Preferably, a pressure block is installed inside the retaining ring via a groove, and one end of the pressure block is connected to a pull rod that passes through the retaining ring.
[0012] Preferably, the ends of the wedge block and the pressure block that are close to each other are both inclined structures, and the wedge block forms a telescopic structure with the protrusion through a telescopic spring.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: When using this hairpin-type flat wire inductor, the protective block can be sleeved on the outside of the pin according to the pin's usage requirements. This allows the fixing blocks on both sides of the protective block to drive the insertion block into the groove of the package shell. During the insertion process, the rotating block retracts into the groove of the insertion block. When the insertion block is fully inserted into the package shell, the rotating block will rotate back to its original position via the movable spring. Through the rotating block and the insertion block, the protective block can be stably sleeved on the outside of the pin, thereby providing reinforcement and protection for the pin. This is the characteristic of the use of this hairpin-type flat wire inductor.
[0014] 1. In use, the hairpin-type flat wire inductor can have its protection block fixed to the outside of the pin by inserting a plug, and then fixed by rotating a block, so that the protection block can reinforce and protect the pin and prevent damage to the pin.
[0015] 2. In use, the magnetic core of this hairpin flat wire inductor can be placed on the package shell according to the usage requirements. Then, the retaining ring is passed through the magnetic core and the package shell. At the same time, the retaining ring can be connected and fixed by the telescopic spring and wedge block at the bottom of the package shell, so as to facilitate and quickly connect and fix the package shell and the magnetic core. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the main sectional view of the present invention;
[0017] Figure 2 This is a schematic diagram of the front sectional view of the retaining ring of this utility model;
[0018] Figure 3 This is a schematic diagram of the front sectional view of the insert block of this utility model;
[0019] Figure 4 This is a three-dimensional structural diagram of the retaining ring of this utility model.
[0020] In the diagram: 1. Magnetic core; 2. Coil; 3. Encapsulation shell; 4. Pin; 5. Protective block; 6. Fixing block; 7. Insertion block; 8. Rotating block; 9. Movable spring; 10. Movable block; 11. Push block; 12. Protrusion; 13. Telescopic spring; 14. Wedge block; 15. Snap ring; 16. Pressure block; 17. Pull rod. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] Please see Figure 1 This utility model provides a technical solution: a hairpin flat wire inductor, comprising: a magnetic core 1 and pins 4, a coil 2 wound around the outside of the magnetic core 1, a package shell 3 installed on one side of the magnetic core 1, and pins 4 connected to one end of the coil 2;
[0023] A protective block 5 is sleeved on the outside of pin 4. Fixed blocks 6 are connected to both sides of the protective block 5. An insert block 7 is installed on the top of the fixed block 6. A rotating block 8 is connected to one side of the insert block 7 through a rotating shaft. A movable spring 9 is connected between the rotating block 8 and the groove of the insert block 7. A movable block 10 is provided on one side of the rotating block 8. A push block 11 is connected to one side of the movable block 10 through the encapsulation shell 3. The rotating block 8 and the insert block 7 form a rotating structure through the rotating shaft.
[0024] In practical implementation, when the pin 4 needs reinforcement, the hairpin-type flat wire inductor can have a protective block 5 fitted onto the outside of the pin 4. Simultaneously, the fixing blocks 6 on both sides of the protective block 5 drive the insertion block 7 into the groove of the package housing 3. As the insertion block 7 moves into the groove of the package housing 3, the rotating block 8 on one side of the insertion block 7 is pressed by the inner wall of the groove in the package housing 3, causing it to rotate inwards. This causes the rotating block 8 to retract into the groove of the insertion block 7, compressing the movable spring 9 on one side of the insertion block 7. When the insertion block 7 is fully inserted into the groove of the package housing 3, due to the large opening inside the package housing 3, the rotating block 8... The rotating block 8 will rotate out of the groove of the insert block 7 by the reset action of the movable spring 9. The cooperation between the rotating block 8 and the insert block 7 can fix the protective block 5 to the outside of the pin 4. The protective block 5 can strengthen and protect the pin 4, making the connection less prone to damage. Conversely, the push block 11 can be pushed, which will push the movable block 10 to move. At this time, the movable block 10 can press the rotating block 8 back into the groove of the insert block 7. Without the limiting effect of the rotating block 8 on the insert block 7, the insert block 7 can be removed from the groove of the package shell 3, making it convenient to remove the protective block 5.
[0025] See Figure 1 and Figure 3As can be seen, during use, the protective block 5 can be fitted onto the outside of the pin 4 according to the usage requirements. With the cooperation of the insert block 7 and the rotating block 8, the protective block 5 can be fixed on one side of the package shell 3. The protective block 5 can protect and reinforce the pin 4.
[0026] A protrusion 12 is installed at one end of the encapsulation shell 3. A telescopic spring 13 is installed inside the protrusion 12. A wedge block 14 is installed through the protrusion 12 on one side of the telescopic spring 13. A retaining ring 15 is sleeved on one end of the wedge block 14. A pressure block 16 is installed inside the retaining ring 15 through a groove. A pull rod 17 that passes through the retaining ring 15 is connected to one end of the pressure block 16. The ends of the wedge block 14 and the pressure block 16 that are close to each other are both inclined structures. The wedge block 14 forms a telescopic structure with the protrusion 12 through the telescopic spring 13. Two sets of protrusions 12 are symmetrically installed about the center line of the retaining ring 15.
[0027] In practical implementation, when it is necessary to quickly connect and fix the package shell 3 and the magnetic core 1, the hairpin flat wire inductor can place the magnetic core 1 on the package shell 3, and then the retaining ring 15 is clamped on the outside of the magnetic core 1 and passes through the package shell 3. Since one end of the wedge block 14 has a beveled structure, when the retaining ring 15 is inserted, the bottom of the retaining ring 15 will squeeze the wedge block 14. The wedge block 14 will shrink into the inside of the protrusion 12 when it is squeezed, so that the wedge block 14 squeezes the telescopic spring 13 inside the protrusion 12. When the retaining ring 15 completely limits the magnetic core 1 on the package shell 3, the wedge block 14 will be aligned with the groove on the side of the retaining ring 15. Then the telescopic spring 13 will return to its original position and drive the wedge block 14 to be inserted into the groove of the retaining ring 15. Through the cooperation of the wedge block 14 and the retaining ring 15, the package shell 3 and the magnetic core 1 can be quickly connected and fixed.
[0028] Conversely, simply pull the lever 17 towards the bottom of the retaining ring 15, causing the lever 17 to move the pressure block 16 downwards. Since the ends of the pressure block 16 and the wedge block 14 that are close to each other are both inclined structures, the downward movement of the pressure block 16 will squeeze the wedge block 14 through the inclined surface, thereby squeezing the wedge block 14 into the interior of the protrusion 12 again. Without the wedge block 14 limiting the retaining ring 15, the retaining ring 15 can be separated from the encapsulation shell 3, thus making it easy to quickly remove the magnetic core 1 from the encapsulation shell 3.
[0029] See Figure 1 , Figure 2 and Figure 4 As can be seen, during use, the magnetic core 1 can be placed on the packaging shell 3 according to the usage requirements, and then the magnetic core 1 can be fixed on the packaging shell 3 by the retaining ring 15, and the retaining ring 15 can be fixed by the wedge block 14, so that the magnetic core 1 and the packaging shell 3 can be quickly connected and fixed.
[0030] In summary: When using this hairpin-type flat wire inductor, the coil 2 can be evenly wound around the outside of the magnetic core 1, and then the pin 4 is connected to the end of the coil 2. Finally, the encapsulation shell 3 is installed on one side of the magnetic core 1. During normal operation, it is only necessary to connect the pin 4 to the corresponding position on the circuit board as needed, and then the flat wire inductor can work normally. This is existing technology and will not be elaborated on in detail here. The contents not described in detail in this description are existing technologies known to those skilled in the art.
[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A hairpin-type flat wire inductor, comprising: A magnetic core (1) and pins (4) are characterized in that: a coil (2) is wound around the outside of the magnetic core (1), a package shell (3) is installed on one side of the magnetic core (1), and the pins (4) are connected to one end of the coil (2); A protective block (5) is sleeved on the outside of the pin (4), and a fixing block (6) is connected to both sides of the protective block (5). A plug (7) is installed on the top of the fixing block (6).
2. The hairpin-type flat wire inductor according to claim 1, characterized in that: A rotating block (8) is connected to one side of the insert (7) via a rotating shaft, and a movable spring (9) is connected between the rotating block (8) and the groove of the insert (7).
3. A hairpin-type flat wire inductor according to claim 2, characterized in that: A movable block (10) is provided on one side of the rotating block (8), and a push block (11) is connected to one side of the movable block (10) through the encapsulation shell (3).
4. A hairpin-type flat wire inductor according to claim 1, characterized in that: A protrusion (12) is installed at one end of the encapsulation shell (3), and a telescopic spring (13) is installed inside the protrusion (12).
5. A hairpin-type flat wire inductor according to claim 4, characterized in that: A wedge block (14) is installed on one side of the telescopic spring (13) through the protrusion (12), and a retaining ring (15) is sleeved on one end of the wedge block (14).
6. A hairpin-type flat wire inductor according to claim 5, characterized in that: The retaining ring (15) has a pressure block (16) installed inside through a groove, and one end of the pressure block (16) is connected to a pull rod (17) that passes through the retaining ring (15).
7. A hairpin-type flat wire inductor according to claim 5, characterized in that: The wedge block (14) and the pressure block (16) are both inclined at their closest ends. The wedge block (14) forms a telescopic structure with the protrusion (12) through the telescopic spring (13).