A flexibly adjustable micro planar transformer

Abstract

The application discloses a flexible adjustable micro planar transformer and relates to the technical field of transformers, which comprises a transformer body, wherein the transformer body comprises a lower magnetic core, the top end of the lower magnetic core is provided with an upper magnetic core, the inner side of the upper magnetic core and the lower magnetic core is provided with a PCB board, the surface of the PCB board is provided with a pin, the top end of the PCB board is provided with an adjusting mechanism, the top end of the upper magnetic core is provided with a fixing mechanism, and the outer surface of the pin is provided with a protection mechanism. Through the adjusting mechanism, the fixing mechanism and the protection mechanism, the application realizes more flexible adjusting function, more excellent adaptability and lower use cost.

Description

Technical Field

[0001] This invention relates to the field of transformer technology, specifically to a flexibly adjustable miniature planar transformer. Background Technology

[0002] As a type of transformer, the core feature of a planar transformer is that its windings are not made of traditional round copper wire, but are flat, patterned conductors made by printing circuit boards, thick film technology or by stamping thin copper sheets. These planar windings are stacked layer by layer between the flat magnetic core, like a "spiral".

[0003] However, existing miniature planar transformers have the following shortcomings:

[0004] In existing technologies, the PCB spacing of transformers is fixed. This results in a fixed leakage inductance and interlayer distributed capacitance after the transformer is assembled, making it impossible to adjust the spacing of multiple PCBs during use, thus lacking flexibility. When the transformer needs to add or remove PCBs, the corresponding magnetic core must also be replaced with a model suitable for different numbers of PCBs, making it impossible to make corresponding adjustments and resulting in poor adaptability. In addition, the insulating sleeves in existing technologies are usually molded and encapsulated on the transformer pins in one go. The encapsulated transformer pins cannot be bent a second time, resulting in high costs.

[0005] Therefore, we propose a flexibly adjustable miniature planar transformer to address the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide a flexibly adjustable miniature planar transformer. Through the setting of adjustment mechanism, fixing mechanism and protection mechanism, it can achieve more flexible adjustment function, better adaptability and lower use cost, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a flexibly adjustable miniature planar transformer, comprising a transformer body, the transformer body comprising a lower magnetic core, an upper magnetic core mounted on the top of the lower magnetic core, a PCB board mounted on the inner side of the upper magnetic core and the lower magnetic core, pins mounted on the surface of the PCB board, an adjustment mechanism provided on the top of the PCB board, a fixing mechanism provided on the top of the upper magnetic core, and a protective mechanism provided on the outer surface of the pins;

[0008] A telescopic column is fixedly installed at the top of the lower magnetic core, and the top of the telescopic column contacts the bottom of the upper magnetic core. The adjustment mechanism includes a base plate, which is fixedly installed at the top of the PCB board. A top plate is slidably connected to the outer surface of the base plate. Wedge blocks are provided at the four corners of the top of the base plate. A chamfered surface is provided at the bottom of the top plate. Connecting rods are rotatably connected to both sides of the inner surface of the top plate. Multiple sets of first gears and second gears are fixedly installed on the outer surface of the connecting rods. Toothed belts are rotatably connected to the outer surfaces of the two sets of second gears. An extension rod is fixedly installed at one end of the outer surface of one set of second gears. A rotating block is fixedly installed at one end of the outer surface of the extension rod. A protective cover is installed on one side of the outer surface of the top plate. Threaded grooves are opened on the outer surface of the extension rod and the inner side of the protective cover.

[0009] Preferably, the bottom end of the upper magnetic core and the top end of the lower magnetic core are provided with mating grooves, and the upper magnetic core and the lower magnetic core are engaged through the mating grooves.

[0010] Preferably, the top of the base plate is provided with a groove, and the wedge block is slidably connected to the inner side of the groove.

[0011] Preferably, the first gear meshes with the inclined surface of the wedge block, and the inclined surface of the wedge block contacts the oblique cut surface to form a sliding fit surface.

[0012] Preferably, the protective cover is fitted onto the surface of the toothed belt, and the extension rod is rotatably connected to the inside of the protective cover through a threaded groove on the surface.

[0013] Preferably, the fixing mechanism includes a fixing rod, which is fixedly installed at the top of the lower magnetic core, and a mounting frame is fixedly installed at the top of the upper magnetic core. The fixing rod is inserted into the inner side of the upper magnetic core and the mounting frame. A push plate is slidably connected to the inner side of the mounting frame. Slots are provided on the surfaces of both the fixing rod and the mounting frame.

[0014] Preferably, a plug rod is fixedly installed on one side of the outer surface of the push plate, and the plug rod is slidably connected to the inner side of the slot. A reset spring and a pull rod are fixedly installed on the other side of the outer surface of the push plate, and the pull rod is slidably connected to the surface of the mounting frame.

[0015] Preferably, the protective mechanism includes a first insulating sleeve, a second insulating sleeve is inserted into the outer surface of the first insulating sleeve, the second insulating sleeve and the first insulating sleeve are both sleeved on the outer surface of the pin, and mounting holes are opened on both sides of the outer surface of the first insulating sleeve and the pin, a limit rod is rotatably connected to the inner side of the mounting hole, and a locking block is fixedly installed on the outer surface of the limit rod.

[0016] Preferably, a knob is fixedly installed on one end of the outer surface of the limiting rod, and slots are provided on both sides of the outer surface of the second insulating sleeve. The edge shape of the slot and the shape of the locking block are both spiral, and the locking block is slidably connected to the inner edge of the slot.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. This invention achieves more flexible adjustment functions through the setting of the adjustment mechanism. First, the rotating block drives the extension rod to rotate, which in turn drives the second gear and the toothed belt to rotate, so that the two sets of second gears drive the two sets of connecting rods to rotate simultaneously. Then, the connecting rod drives multiple sets of first gears to rotate, thereby driving the wedge block to move in the slide groove. Since the inclined surface and the oblique cut surface of the wedge block are in contact, they form a sliding mating surface, pushing multiple sets of wedge blocks to move simultaneously to the middle or both sides. The wedge block drives the top plate to rise or fall, and the top plate drives the PCB board to move, thereby completing the adjustment of the PCB board spacing. Since the inclined surface angle of the wedge block is smaller than the friction angle of the first gear, the first gear can achieve self-locking at any position. At the same time, the threaded groove on the extension rod and the protective cover provides rotational resistance, further enhancing the stability of the wedge block and effectively improving the flexibility of the transformer body.

[0019] 2. This invention features a fixing mechanism that provides superior adaptability. First, pulling the lever moves the push plate, disengaging the insertion rod from the slot and simultaneously compressing the return spring. At this point, the upper magnetic core can be removed. Subsequently, the number of PCB boards mounted on the upper and lower magnetic cores can be increased or decreased. Next, the upper and lower magnetic cores are engaged through the mating groove. During this process, the telescopic column also moves accordingly. The mating groove and telescopic column limit and support the movement path of the upper magnetic core. Once the upper magnetic core is moved to the appropriate position, the lever is released, the return spring resets, and the push plate moves, allowing the insertion rod to be inserted into the slot, thus limiting the position of the fixing rod. This design facilitates the addition or removal of PCB boards and effectively improves the adaptability of the transformer body.

[0020] 3. This invention incorporates a protective mechanism, achieving lower usage costs. First, the first and second insulating sleeves are fitted onto the pin's surface from both ends, exposing the bending point. The pin is then bent, and the first and second insulating sleeves are inserted. Next, the locking block on the limiting rod is aligned with the slot and inserted, allowing the limiting rod to penetrate the inside of the pin, the first insulating sleeve, and the second insulating sleeve. Then, a knob is used to move the locking block away from the slot, thus limiting the first and second insulating sleeves. Because the slot edge and the locking block are both irregularly spiral-shaped, the limiting rod can only be released when the angle between the locking block and the slot is perfectly aligned, further enhancing the structure's stability. This allows for quick maintenance and replacement of the first and second insulating sleeves, and the pin can be bent a second time after the first and second insulating sleeves are removed, effectively reducing usage costs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a flexibly adjustable miniature planar transformer according to the present invention.

[0022] Figure 2 This is a side view of the three-dimensional structure of a flexibly adjustable miniature planar transformer according to the present invention.

[0023] Figure 3 This is a three-dimensional view of the disassembled structure of a flexibly adjustable miniature planar transformer according to the present invention.

[0024] Figure 4 This is a three-dimensional view of the disassembled PCB board structure in a flexibly adjustable miniature planar transformer according to the present invention.

[0025] Figure 5 This invention relates to a flexibly adjustable miniature planar transformer. Figure 4 Enlarged 3D view of the structure at point A in the middle;

[0026] Figure 6 This is an exploded perspective view of the upper and lower magnetic cores in a flexibly adjustable miniature planar transformer according to the present invention.

[0027] Figure 7 This is a side perspective view of the fixing mechanism in a flexibly adjustable miniature planar transformer according to the present invention.

[0028] Figure 8 This is a side-view perspective view of the pin structure in a flexibly adjustable miniature planar transformer according to the present invention.

[0029] Figure 9 This is a side view perspective of the protective mechanism in a flexibly adjustable miniature planar transformer according to the present invention.

[0030] In the diagram: 1. Transformer body; 101. Lower magnetic core; 102. Upper magnetic core; 103. PCB board; 104. Pin; 105. Telescopic column; 106. Connecting groove; 2. Adjustment mechanism; 201. Base plate; 202. Top plate; 203. Wedge block; 204. Beveled surface; 205. Connecting rod; 206. First gear; 207. Second gear; 208. Toothed belt; 209. Extension rod; 210. Rotary... 211. Block; 212. Protective cover; 3. Threaded groove; 4. Fixing mechanism; 301. Fixing rod; 302. Mounting frame; 303. Push plate; 304. Slot; 305. Insert rod; 306. Return spring; 307. Pull rod; 5. Protective mechanism; 401. First insulating sleeve; 402. Second insulating sleeve; 403. Mounting hole; 404. Limiting rod; 405. Locking block; 406. Knob; 407. Locking groove. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see the appendix Figure 1 -Appendix Figure 9 As shown, the present invention provides a technical solution: a flexibly adjustable miniature planar transformer, including a transformer body 1, the transformer body 1 including a lower magnetic core 101, an upper magnetic core 102 mounted on the top of the lower magnetic core 101, a PCB board 103 mounted on the inner side of the upper magnetic core 102 and the lower magnetic core 101, pins 104 mounted on the surface of the PCB board 103, and an adjustment mechanism 2 provided on the top of the PCB board 103, a fixing mechanism 3 provided on the top of the upper magnetic core 102, and a protective mechanism 4 provided on the outer surface of the pins 104.

[0033] Example 1, according to Figure 1-5As shown, a telescopic column 105 is fixedly installed at the top of the lower magnetic core 101. The top of the telescopic column 105 contacts the bottom of the upper magnetic core 102. The adjustment mechanism 2 includes a base plate 201, which is fixedly installed at the top of the PCB board 103. A top plate 202 is slidably connected to the outer surface of the base plate 201. Wedge blocks 203 are provided at the four corners of the top of the base plate 201. A chamfered surface 204 is provided at the bottom of the top plate 202. Connecting rods 205 are rotatably connected to both sides of the inner surface of the top plate 202. Multiple sets of first gears 206 and second gears 207 are fixedly installed on the outer surface of the connecting rods 205. A toothed belt 208 is rotatably connected to the outer surface of both sets of second gears 207. An extension rod 209 is fixedly installed at one end of the outer surface of one set of second gears 207. A rotating block 210 is fixedly installed on one end of the outer surface of the 09. A protective cover 211 is installed on one side of the outer surface of the top plate 202. Threaded grooves 212 are opened on the outer surface of the extension rod 209 and the inner side of the protective cover 211. A mating groove 106 is opened at the bottom end of the upper magnetic core 102 and the top end of the lower magnetic core 101. The upper magnetic core 102 and the lower magnetic core 101 are engaged through the mating groove 106. A sliding groove is opened at the top end of the bottom plate 201. The wedge block 203 is slidably connected to the inner side of the sliding groove. The first gear 206 meshes with the inclined surface of the wedge block 203. The inclined surface of the wedge block 203 contacts the inclined cut surface 204 to form a sliding mating surface. The protective cover 211 is sleeved on the surface of the toothed belt 208. The extension rod 209 is rotatably connected to the inner side of the protective cover 211 through the threaded groove 212 on the surface.

[0034] The overall effect of Embodiment 1 is as follows: it achieves a more flexible adjustment function. First, the rotating block 210 drives the extension rod 209 to rotate, which in turn drives the second gear 207 and the toothed belt 208 to rotate, so that the two sets of second gears 207 simultaneously drive the two sets of connecting rods 205 to rotate. Then, the connecting rods 205 drive multiple sets of first gears 206 to rotate, thereby driving the wedge block 203 to move in the groove. Since the inclined surface of the wedge block 203 is in contact with the inclined surface 204, the two form a sliding mating surface, causing multiple sets of wedge blocks 203 to move. 03 Simultaneously moving to the middle or both sides, the wedge block 203 drives the top plate 202 to move up or down, and the top plate 202 drives the PCB board 103 to move, thereby completing the adjustment of the spacing of the PCB board 103. Since the slope angle of the wedge block 203 is smaller than the friction angle of the first gear 206, the first gear 206 can achieve self-locking at any position. At the same time, the extension rod 209 and the threaded groove 212 on the protective cover 211 provide rotational resistance, further enhancing the stability of the wedge block 203 and improving the flexibility of the transformer body 1.

[0035] Example 2, according to Figure 3 , Figure 6 and Figure 7As shown, the fixing mechanism 3 includes a fixing rod 301, which is fixedly installed on the top of the lower magnetic core 101. A mounting frame 302 is fixedly installed on the top of the upper magnetic core 102. The fixing rod 301 is inserted into the inner side of the upper magnetic core 102 and the mounting frame 302. A push plate 303 is slidably connected to the inner side of the mounting frame 302. Slots 304 are provided on the surfaces of both the fixing rod 301 and the mounting frame 302. A plug rod 305 is fixedly installed on one side of the outer surface of the push plate 303. The plug rod 305 is slidably connected to the inner side of the slot 304. A reset spring 306 and a pull rod 307 are fixedly installed on the other side of the outer surface of the push plate 303. The pull rod 307 is slidably connected to the surface of the mounting frame 302.

[0036] The overall effect of Embodiment 2 is as follows: it achieves better adaptability. First, pulling the lever 307 moves the push plate 303, thereby causing the insertion rod 305 to disengage from the slot 304. At the same time, the return spring 306 is compressed, at which point the upper magnetic core 102 can be removed. Then, the number of PCB boards installed on the upper magnetic core 102 and the lower magnetic core 101 can be increased or decreased. Next, the upper magnetic core 102 and the lower magnetic core 101 are engaged through the docking groove 106. During this process, the telescopic column 105 will also move accordingly. The docking groove 106 and the telescopic column 105 can limit and support the movement path of the upper magnetic core 102. When the upper magnetic core 102 is moved to the appropriate position, the lever 307 is released, the return spring 306 returns to its original position, and the push plate 303 moves, thereby causing the insertion rod 305 to be inserted into the slot 304, completing the limitation of the position of the fixing rod 301. This design provides convenience for the addition or removal of PCB boards and effectively improves the adaptability of the transformer body 1.

[0037] Example 3, according to Figure 3 , Figure 8 and Figure 9 As shown, the protective mechanism 4 includes a first insulating sleeve 401, a second insulating sleeve 402 inserted into the outer surface of the first insulating sleeve 401, and both the second insulating sleeve 402 and the first insulating sleeve 401 are sleeved on the outer surface of the pin 104. Mounting holes 403 are provided on both sides of the outer surface of the first insulating sleeve 401 and the pin 104. A limit rod 404 is rotatably connected to the inner side of the mounting hole 403. A locking block 405 is fixedly installed on the outer surface of the limit rod 404, and a knob 406 is fixedly installed at one end of the outer surface of the limit rod 404. A slot 407 is provided on both sides of the outer surface of the second insulating sleeve 402. The edge shape of the slot 407 and the shape of the locking block 405 are both spiral. The locking block 405 is slidably connected to the inner edge of the slot 407.

[0038] The overall effect of embodiment 3 is as follows: it achieves lower usage costs. First, the first insulating sleeve 401 and the second insulating sleeve 402 are respectively placed on the surface of the pin 104 from both ends, exposing the bending point. Then, the pin 104 is bent. Finally, the first insulating sleeve 401 and the second insulating sleeve 402 are inserted. Next, the locking block 405 on the limiting rod 404 is aligned with the locking slot 407 and inserted, so that the limiting rod 404 is inserted into the inside of the pin 104, the first insulating sleeve 401 and the second insulating sleeve 402. Then, the locking block 405 on the limiting rod 404 is moved away by the knob 406. The slot 407 limits the positions of the first insulating sleeve 401 and the second insulating sleeve 402. Since the edge of the slot 407 and the shape of the locking block 405 are both irregular spiral shapes, the limiting rod 404 can only be released when the angle of the locking block 405 and the slot 407 are completely aligned. This further enhances the stability of the structure, allowing the first insulating sleeve 401 and the second insulating sleeve 402 to be quickly maintained and replaced. After the first insulating sleeve 401 and the second insulating sleeve 402 are removed, the pin 104 can be bent again, reducing the cost of use.

[0039] The working principle of the entire device is as follows: When using the transformer body 1, if it is necessary to add or remove PCB boards 103, the push plate 303 is moved by the pull rod 307, which in turn moves the insertion rod 305 away from the slot 304 and compresses the return spring 306, allowing the upper magnetic core 102 to be removed. Then, the PCB boards 103 on the upper magnetic core 102 and lower magnetic core 101 are added or removed. Next, the upper magnetic core 102 and lower magnetic core 101 are engaged through the docking groove 106, and the telescopic column 105 moves accordingly. The docking groove 106 and the telescopic column 105 limit and support the movement path of the upper magnetic core 102. After the upper magnetic core 102 moves to the appropriate position, the pull rod 307 can be released, allowing the return spring 306 to return to its original position. The reset of 306 causes the push plate 303 to move, which in turn causes the insertion rod 305 to insert into the slot 304, thereby limiting the position of the fixing rod 301. This facilitates the addition or removal of the PCB board 103 and improves the adaptability of the transformer body 1. When it is necessary to adjust the leakage inductance and interlayer distributed capacitance of the transformer body 1, the limitation on the fixing rod 301 can be released. Then, the rotating block 210 drives the extension rod 209 to rotate, which in turn drives the second gear 207 and the toothed belt 208 to rotate. This causes the two sets of second gears 207 to drive the two sets of connecting rods 205 to rotate simultaneously. Then, the connecting rods 205 drive multiple sets of first gears 206 to rotate, which in turn drives the wedge block 203 to move in the slide groove. Because the wedge block 203... The inclined surface of the wedge 203 contacts the inclined cut surface 204, forming a sliding fit surface. This allows multiple sets of wedge blocks 203 to move simultaneously towards the center or both sides. The wedge blocks 203 drive the top plate 202 to move up or down, which in turn drives the PCB board 103 to move, thus adjusting the spacing of the PCB board 103. Since the inclined angle of the wedge block 203 is smaller than the friction angle of the first gear 206, the first gear 206 can self-lock at any position. The extension rod 209 and the threaded groove 212 on the protective cover 211 provide rotational resistance, further increasing the stability of the wedge block 203 and the flexibility of the transformer body 1. When using the pin 104, the first insulating sleeve 401 and the second insulating sleeve 401 need to be connected from both ends of the pin 104. The insulating sleeves 402 are respectively fitted onto the surface of the first insulating sleeve 401, exposing the bending point. Then, the pin 104 is bent, and finally the first insulating sleeve 401 and the second insulating sleeve 402 are inserted. Next, the locking block 405 on the limiting rod 404 is aligned with the locking slot 407 and inserted, so that the limiting rod 404 is inserted into the inside of the pin 104, the first insulating sleeve 401, and the second insulating sleeve 402. Then, the locking block 405 on the limiting rod 404 is moved away from the locking slot 407 by the knob 406, thereby completing the function of limiting the position of the first insulating sleeve 401 and the second insulating sleeve 402. Since the edge shape of the locking slot 407 and the shape of the locking block 405 are both irregular spiral shapes, the angle position of the locking block 405 and the locking slot 407 must be consistent for the limiting rod 404 to be released.This further increases the structural robustness, allowing for quick maintenance and replacement of the first insulating sleeve 401 and the second insulating sleeve 402. It also allows for a secondary bending of the pin 104 after removing the first insulating sleeve 401 and the second insulating sleeve 402, reducing operating costs.

[0040] 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 flexibly adjustable miniature planar transformer, comprising a transformer body (1), characterized in that: The transformer body (1) includes a lower magnetic core (101), an upper magnetic core (102) is installed at the top of the lower magnetic core (101), a PCB board (103) is installed on the inner side of the upper magnetic core (102) and the lower magnetic core (101), pins (104) are installed on the surface of the PCB board (103), and an adjustment mechanism (2) is provided at the top of the PCB board (103), a fixing mechanism (3) is provided at the top of the upper magnetic core (102), and a protective mechanism (4) is provided on the outer surface of the pins (104). A telescopic column (105) is fixedly installed at the top of the lower magnetic core (101). The top of the telescopic column (105) contacts the bottom of the upper magnetic core (102). The adjustment mechanism (2) includes a base plate (201), which is fixedly installed at the top of the PCB board (103). A top plate (202) is slidably connected to the outer surface of the base plate (201). Wedge blocks (203) are provided at the four corners of the top of the base plate (201). A chamfered surface (204) is provided at the bottom of the top plate (202). Connecting rods (204) are rotatably connected to both sides of the inner surface of the top plate (202). 05), multiple sets of first gears (206) and second gears (207) are fixedly installed on the outer surface of the connecting rod (205). The outer surfaces of the two sets of second gears (207) are rotatably connected with toothed belts (208). An extension rod (209) is fixedly installed at one end of the outer surface of one set of second gears (207). A rotating block (210) is fixedly installed at one end of the outer surface of the extension rod (209). A protective cover (211) is installed on one side of the outer surface of the top plate (202). Threaded grooves (212) are opened on the outer surface of the extension rod (209) and the inner side of the protective cover (211).

2. The flexibly adjustable miniature planar transformer according to claim 1, characterized in that: The bottom end of the upper magnetic core (102) and the top end of the lower magnetic core (101) are provided with mating grooves (106), and the upper magnetic core (102) and the lower magnetic core (101) are engaged through the mating grooves (106).

3. The flexibly adjustable miniature planar transformer according to claim 1, characterized in that: The top of the base plate (201) is provided with a sliding groove, and the wedge block (203) is slidably connected to the inner side of the sliding groove.

4. The flexibly adjustable miniature planar transformer according to claim 1, characterized in that: The first gear (206) meshes with the inclined surface of the wedge block (203), and the inclined surface of the wedge block (203) contacts the oblique cutting surface (204) to form a sliding mating surface.

5. The flexibly adjustable miniature planar transformer according to claim 1, characterized in that: The protective cover (211) is fitted onto the surface of the toothed belt (208), and the extension rod (209) is rotatably connected to the inside of the protective cover (211) through the threaded groove (212) on the surface.

6. The flexibly adjustable miniature planar transformer according to claim 1, characterized in that: The fixing mechanism (3) includes a fixing rod (301), which is fixedly installed on the top of the lower magnetic core (101). The top of the upper magnetic core (102) is fixedly installed with a mounting frame (302). The fixing rod (301) is inserted into the inner side of the upper magnetic core (102) and the mounting frame (302). The inner side of the mounting frame (302) is slidably connected with a push plate (303). The surfaces of the fixing rod (301) and the mounting frame (302) are both provided with slots (304).

7. The flexibly adjustable miniature planar transformer according to claim 6, characterized in that: A plug rod (305) is fixedly installed on one side of the outer surface of the push plate (303). The plug rod (305) is slidably connected to the inner side of the slot (304). A reset spring (306) and a pull rod (307) are fixedly installed on the other side of the outer surface of the push plate (303). The pull rod (307) is slidably connected to the surface of the mounting frame (302).

8. The flexibly adjustable miniature planar transformer according to claim 1, characterized in that: The protective mechanism (4) includes a first insulating sleeve (401), a second insulating sleeve (402) is inserted into the outer surface of the first insulating sleeve (401), the second insulating sleeve (402) and the first insulating sleeve (401) are both sleeved on the outer surface of the pin (104), and mounting holes (403) are opened on both sides of the outer surface of the first insulating sleeve (401) and the pin (104). A limit rod (404) is rotatably connected to the inner side of the mounting hole (403), and a locking block (405) is fixedly installed on the outer surface of the limit rod (404).

9. The flexibly adjustable miniature planar transformer according to claim 8, characterized in that: A knob (406) is fixedly installed on one end of the outer surface of the limiting rod (404). The outer surfaces of the second insulating sleeve (402) are provided with slots (407). The edge shape of the slot (407) and the shape of the block (405) are both spiral. The block (405) is slidably connected to the inner edge of the slot (407).

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