Anti-direct-current mutual inductor with heat dissipation structure

Abstract

The utility model relates to the technical field of magnetic cores, in particular to an anti-direct-current mutual inductor with a heat dissipation structure, which comprises a mutual inductor main body, a plurality of pins are fixedly connected to the front side of the mutual inductor main body, a plurality of heat dissipation holes are arranged outside the pins, pins are inserted into the pins, clamping grooves are arranged on the left side and the right side of each pin, and the clamping grooves are arranged in the mutual inductor main body. A clamping block is clamped in the clamping groove, the clamping block is slidably connected in the pin, and two mounting grooves are formed in the pin; the pins are designed to be hollow, and the heat dissipation holes are formed in the outer portions of the pins, so that the probes of the PCB can be inserted into the pins and clamped through the clamping blocks, the pins and the PCB are conveniently and stably installed, heat is reduced, heat dissipation can be conducted in time, heat interference is avoided, and the service life of the PCB is prolonged. And therefore, the service life is prolonged, and the use economy is higher.

Description

Technical Field

[0001] This utility model relates to the field of magnetic core technology, and more specifically, to an anti-DC transformer with a heat dissipation structure. Background Technology

[0002] With the rapid development of power electronics technology, the accurate measurement of electrical energy in AC circuits containing DC components has received widespread attention in the electricity meter industry. Currently, high-precision, DC-component-resistant current transformers are being developed and manufactured, suitable for electronic electricity meters that require DC power measurement, and also serve as a means of preventing electricity theft.

[0003] A search revealed a single-core DC current transformer in the prior art, patent publication number CN211654511U. Its specification states that the isolation structure isolates the bottom of the housing from the PCB board, creating a large heat-dissipating air layer between them. This prevents heat generated during soldering of the conductive pins to the PCB board from being transferred to the bottom of the housing and causing deformation. Furthermore, the isolation structure also allows for a fixed insertion length of the conductive pins into the PCB board.

[0004] However, in actual use, the pins are usually connected to the PCB board by soldering. When a component on the PCB board is damaged, the current transformer is removed from the PCB board, and the pins on the current transformer are re-soldered to the PCB board. If a cold solder joint occurs during soldering, an effective connection is not formed between the pins and the PCB board, resulting in an unstable connection. This increases the connection resistance, leading to increased heat generation, which can cause thermal interference to surrounding electronic components, affecting their normal operation and even causing component damage. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides an anti-DC transformer with a heat dissipation structure to solve the problem that in the prior art, when the connection between the pin and the PCB board is unstable, the connection resistance increases, resulting in increased heat generation, which in turn causes thermal interference to the surrounding electronic components, affects their normal operation performance, and may even lead to component damage.

[0006] To solve the above technical problems, the present invention provides the following technical solution: a DC current transformer with a heat dissipation structure, comprising a current transformer body, a plurality of pins fixedly connected to the front side of the current transformer body, a plurality of heat dissipation holes being opened on the outside of the pins, a pin being inserted into the inside of the pins, a slot being opened on both the left and right sides of the pin, a locking block being locked inside the slot, and the locking block being slidably connected inside the pin.

[0007] The pin has two mounting slots inside. The end of the card block away from the slot is fixedly connected to a mounting plate. The other end of the mounting plate is fixedly connected to a pull rope. The end of the pull rope away from the mounting plate is fixedly connected to a winding rod. An elastic element is sleeved on the outside of the pull rope.

[0008] The winding rod is externally fixedly connected to two limiting blocks. The top of the pin is provided with a placement groove. The placement groove is provided with two slots. The placement block is movably connected to the placement groove. The placement block is provided with a limiting groove. The top of the limiting groove is fixedly connected to a turntable. The bottom of the turntable is fixedly connected to both sides with insert blocks.

[0009] The card block is slidably connected inside the mounting groove, the mounting plate is slidably connected inside the mounting groove, and the pull rope is slidably connected inside the mounting groove.

[0010] One end of the elastic element is fixedly connected to the inner wall of the mounting groove, and the other end of the elastic element is fixedly connected to the mounting plate.

[0011] The winding rod is rotatably connected to the inside of the top of the placement groove, the winding rod is slidably connected to the inside of the limiting groove, and the limiting block is slidably connected to the inside of the limiting groove.

[0012] The turntable is slidably connected inside the placement slot, and the insert block is inserted into the slot.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] In the above solution, by designing the pins hollow and opening multiple heat dissipation holes on their exterior, the PCB board probes can be inserted into the pins and secured with clips, making the pins and PCB board easy and stable to install. This not only reduces heat generation but also allows for timely heat dissipation, thus preventing thermal interference and extending the lifespan of the pins, resulting in high economic efficiency. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present utility model;

[0016] Figure 2 This is a right view of the fixing pin of this utility model;

[0017] Figure 3 For the present utility model Figure 2 Cross-sectional view of the structure at point AA;

[0018] Figure 4 For the present utility model Figure 2 Cross-sectional view of the structure at point BB;

[0019] Figure 5 For the present utility model Figure 4 Enlarged view of the structure at point A in the middle.

[0020] [Figure Labels]

[0021] 1. Current transformer body; 2. Pins; 3. Insert pins; 4. Heat dissipation holes; 5. Slot; 6. Block; 7. Mounting slot; 8. Mounting plate; 9. Pull rope; 10. Elastic element; 11. Winding rod; 12. Limiting block; 13. Placement slot; 14. Slot; 15. Placement block; 16. Limiting slot; 17. Turntable; 18. Insert block. Detailed Implementation

[0022] To make the technical problems, technical solutions and advantages of this utility model clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0023] Example 1: Please refer to Figures 1 to 5 This utility model provides a technical solution: a DC current transformer with a heat dissipation structure, including a current transformer body 1. Multiple pins 2 are fixedly connected to the front side of the current transformer body 1. Multiple heat dissipation holes 4 are opened on the outside of the pins 2. The heat dissipation holes 4 are used to increase the contact area between the pins 2 and the outside, thereby improving the heat dissipation effect of the pins 2. A pin 3 is inserted into the inside of the pin 2. A slot 5 is opened on both the left and right sides of the pin 3. A locking block 6 is locked inside the slot 5. The locking block 6 is slidably connected inside the pin 2, so that the locking block 6 can limit the pin 3, making the installation of the pin 2 and the pin 3 more stable.

[0024] When pin 2 needs to be connected to pin 3, the two locking blocks 6 are moved to opposite sides, and pin 3 is inserted into the inside of pin 2. Then, the locking blocks 6 are slid in the opposite direction so that they engage with the inside of the slot 5, thus making pin 2 and pin 3 stably connected. This not only reduces heat generation but also allows for timely heat dissipation through the heat dissipation holes 4, preventing thermal interference and extending the service life, making it more economical to use.

[0025] Example 2: Based on Example 1, in order to facilitate the pulling of the locking block 6, two mounting slots 7 are opened inside the pin 2. The locking block 6 is slidably connected inside the mounting slots 7, which provide more space for the locking block 6 to move. The end of the locking block 6 away from the slot 5 is fixedly connected to a mounting piece 8, which is slidably connected inside the mounting slot 7. The mounting slot 7 limits the mounting piece 8 so that it will not deviate when sliding. The other end of the mounting piece 8 is fixedly connected to a pull rope 9, which is slidably connected inside the mounting slot 7. The mounting slot 7 limits the pull rope 9 so that it can slide smoothly. The end of the pull rope 9 away from the mounting piece 8 is fixedly connected to a winding rod 11. An elastic element 10 is sleeved on the outside of the pull rope 9. One end of the elastic element 10 is fixedly connected to the inner wall of the mounting slot 7, and the other end of the elastic element 10 is fixedly connected to the mounting piece 8.

[0026] When the locking block 6 needs to be pulled, the winding rod 11 is rotated to wind one end of the pull rope 9, so that the other end of the pull rope 9 can pull the mounting piece 8 to move outward. As the mounting piece 8 compresses the elastic element 10 and deforms, it can drive the locking block 6 to disengage from the inside of the slot 5. Conversely, by releasing the winding rod 11, the elastic element 10 can perform a reset movement, which in turn can push the mounting piece 8 to move inward, so that the mounting piece 8 can push the locking block 6 to engage with the inside of the slot 5.

[0027] Example 3: Based on Example 2, to improve the engagement stability between the locking block 6 and the locking slot 5, two limiting blocks 12 are externally fixedly connected to the winding rod 11. A placement groove 13 is formed inside the top of the pin 2. The winding rod 11 is rotatably connected to the top of the placement groove 13, which limits the winding rod 11, allowing it to rotate smoothly. Two slots 14 are formed inside the placement groove 13, and a placement block 15 is movably connected inside the placement groove 13, providing space for the placement block 15. A limiting groove 16 is formed inside the placement block 15, allowing the winding rod 11 to slide. Connected inside the limiting groove 16, the limiting groove 16 limits the winding rod 11, allowing the winding rod 11 to slide smoothly. The limiting block 12 is slidably connected inside the limiting groove 16. The limiting block 12 and the limiting groove 16 work together to allow the placement block 15 to drive the winding rod 11 to rotate through the limiting block 12. The top of the limiting groove 16 is fixedly connected to the turntable 17, which is slidably connected inside the placement groove 13. The placement groove 13 provides placement space for the turntable 17. The bottom two sides of the turntable 17 are fixedly connected to the insert blocks 18, which are inserted into the slot 14, so that the turntable 17 is limited.

[0028] When the take-up lever 11 needs to be rotated, the turntable 17 is pulled upwards, causing the insert block 18 to disengage from the inside of the turntable 17. This causes the place block 15 to slide upwards. At this time, rotating the turntable 17 causes the place block 15 to rotate, which in turn causes the place block 15 to rotate via the limit block 12. Conversely, sliding the turntable 17 downwards causes the place block 15 to slide downwards, and the turntable 17 pushes the insert block 18 to insert into the slot 14, thereby limiting the turntable 17 and preventing it from rotating.

[0029] The working process of this utility model is as follows:

[0030] When pin 2 needs to be installed with pin 3, pulling the turntable 17 upward causes the insert block 18 to disengage from the inside of the turntable 17, and the turntable 17 causes the placement block 15 to slide upward. Rotating the turntable 17 then causes the placement block 15 to rotate, which in turn causes the placement block 15 to rotate via the limit block 12, allowing the winding rod 11 to wind around one end of the pull rope 9. This causes the other end of the pull rope 9 to pull the mounting piece 8 outward, so that the mounting piece 8, while compressing the elastic element 10 and deforming, causes the locking block 6 to slide into the mounting groove 7, thereby inserting pin 3 into the inside of pin 2. Then, the turntable 17 is released, allowing the elastic element 10 to... The reset movement causes the elastic element 10 to push the mounting piece 8 inward, allowing the mounting piece 8 to push the locking block 6 into the slot 5 and engage it. Then, the locking block 6 slides in the opposite direction, engaging again with the slot 5. At this point, by sliding the turntable 17 downward, the turntable 17 pushes the placement block 15 downward, allowing the turntable 17 to push the insertion block 18 into the slot 14. This limits the turntable 17, preventing it from rotating and ensuring a stable connection between the pin 2 and the pin 3. This not only reduces heat generation but also allows for timely heat dissipation through the heat dissipation hole 4, preventing thermal interference and extending its service life, resulting in higher economic efficiency.

[0031] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0032] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0033] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A DC current transformer with a heat dissipation structure, characterized in that, The device includes a transformer body (1), with multiple pins (2) fixedly connected to the front side of the transformer body (1). Multiple heat dissipation holes (4) are opened on the outside of the pins (2). A pin (3) is inserted into the inside of the pin (2). A slot (5) is opened on both the left and right sides of the pin (3). A locking block (6) is locked inside the slot (5). The locking block (6) is slidably connected inside the pin (2).

2. The DC-DC transformer with a heat dissipation structure according to claim 1, characterized in that, The pin (2) has two mounting slots (7) inside. The end of the card block (6) away from the slot (5) is fixedly connected to a mounting piece (8). The other end of the mounting piece (8) is fixedly connected to a pull rope (9). The end of the pull rope (9) away from the mounting piece (8) is fixedly connected to a winding rod (11). An elastic element (10) is sleeved on the outside of the pull rope (9).

3. The DC-DC transformer with a heat dissipation structure according to claim 2, characterized in that, The winding rod (11) is externally fixedly connected to two limiting blocks (12). The pin (2) has a placement groove (13) inside its top end. The placement groove (13) has two slots (14) inside its interior. The placement groove (13) is movably connected to a placement block (15). The placement block (15) has a limiting groove (16) inside its interior. The top end of the limiting groove (16) is fixedly connected to a turntable (17). Both sides of the bottom end of the turntable (17) are fixedly connected to insert blocks (18).

4. The DC-resistant transformer with a heat dissipation structure according to claim 2, characterized in that, The card block (6) is slidably connected inside the mounting groove (7), the mounting piece (8) is slidably connected inside the mounting groove (7), and the pull rope (9) is slidably connected inside the mounting groove (7).

5. The DC-DC transformer with a heat dissipation structure according to claim 2, characterized in that, One end of the elastic element (10) is fixedly connected to the inner wall of the mounting groove (7), and the other end of the elastic element (10) is fixedly connected to the mounting plate (8).

6. The DC-DC transformer with a heat dissipation structure according to claim 3, characterized in that, The winding rod (11) is rotatably connected to the inside of the top of the placement groove (13), the winding rod (11) is slidably connected to the inside of the limiting groove (16), and the limiting block (12) is slidably connected to the inside of the limiting groove (16).

7. The DC-DC transformer with a heat dissipation structure according to claim 3, characterized in that, The turntable (17) is slidably connected inside the placement slot (13), and the insert (18) is inserted into the slot (14).

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