Equivalent bidirectional conversion CLLC power transformer

Abstract

The invention relates to the technical field of transformers, and discloses an equivalent bidirectional conversion CLLC power transformer which comprises a pair of supporting pieces, a magnetic core is arranged between the pair of supporting pieces, and isolation plates are arranged outside the magnetic core in a sleeving mode from top to bottom at equal intervals. According to the invention, the orientation of the terminal can be adjusted, so that a proper tool use angle can be selected conveniently, the use of the tool is facilitated, and the orientation of the terminal can be adjusted during disassembly, so that when a shielding object exists in front of the terminal, the terminal can avoid the shielding object, and the use of the tool is facilitated; the terminal and the wire connecting end can be disassembled without cleaning a shielding object in front of the terminal during disassembly, time and labor are saved, the limitation of a ball head sleeve on a ball head rod can be eliminated, the ball head rod and the terminal can be pulled out, the position of the terminal can be adjusted to a greater extent, the terminal can be located at a proper operation position, and the operation efficiency is improved. And therefore, the terminal and the wire can be assembled and disassembled conveniently.

Description

Technical Field

[0001] The invention belongs to the technical field of transformers, and in particular relates to an equivalent bidirectional conversion CLLC power transformer. Background Art

[0002] A transformer is an electrical device that works on the principle of electromagnetic induction. It is mainly used to transform AC voltage, current and impedance to achieve efficient transmission and distribution of electrical energy. The basic components of a transformer include an iron core (or magnetic core) and a winding (coil).

[0003] When an existing transformer is in use, the position of its terminal for connecting to an external wire is fixed. When connecting the terminal to the wire connection end, due to environmental restrictions, it may be inconvenient to use tools. When the connection between the terminal and the wire is subsequently cancelled, there may be installed components in front of the terminal. These components form obstructions in front of the terminal, making it impossible to use the tool. The components need to be disassembled before the tool can be used to separate the terminal from the wire, which is time-consuming and laborious.

[0004] Therefore, it is necessary to invent an equivalent bidirectional conversion CLLC power transformer to solve the above problems. Summary of the invention

[0005] In view of the above problems, the present invention provides an equivalent bidirectional conversion CLLC power transformer to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: An equivalent bidirectional conversion CLLC power transformer comprises a pair of support members, a magnetic core is arranged between the pair of support members, an isolation plate is equidistantly sleeved on the outside of the magnetic core from top to bottom, a pair of primary sides and a pair of secondary sides are arranged on the outside of the magnetic core from top to bottom, a leakage magnetic sheet is arranged on the isolation plate, an insulating frame is fixedly installed on the rear side of the magnetic core, the insulating frame is fixedly connected to the support members, the isolation plate is fixedly connected to the insulating frame, terminals cooperating with the primary side and the secondary side are symmetrically arranged on the front side of the support members, a ball head rod is fixedly installed on the rear side of the terminal, a mounting opening corresponding to the terminal is opened on the front side of the support member, a ball head sleeve cooperating with the ball head rod is arranged in the mounting opening, a straightening assembly for straightening the ball head rod is arranged on the rear side of the ball head rod, and corresponding threaded holes are opened on the terminal and the ball head rod.

[0007] Furthermore, the straightening assembly includes a mounting cylinder fixedly installed in the mounting opening, a shaft rod rotatably installed inside the mounting cylinder, torsion springs are sleeved at both ends of the shaft rod, and the two ends of the torsion spring are respectively fixedly connected to the mounting cylinder and the shaft rod, a ring plate is symmetrically fixedly sleeved at the middle part of the shaft rod, a pull rope is fixedly connected to the middle part of the shaft rod, the pull rope is wound on the shaft rod, and the other end of the pull rope is fixedly connected to the middle part of the side of the ball head rod away from the terminal through a connecting rod.

[0008] Furthermore, the spacing distance between the two opposite ring plates is the same as the cross-sectional diameter of the pull rope, the outer side of the pull rope fits with the inner sides of the two ring plates, and the central axes of the pull rope, connecting rod, ball head rod and threaded hole are on the same horizontal line.

[0009] Furthermore, the ball head sleeve is composed of a plurality of arc-shaped plates equidistantly surrounded and assembled, the inner side of the arc-shaped plate matches the shape of the outer side of the ball head rod, and the arc-shaped plate is connected to the mounting tube through a connecting component.

[0010] Furthermore, the connecting component includes a straight rod fixedly mounted on the outside of the arc plate, a cavity is equidistantly arranged on the mounting tube, the cavity is rectangular in shape, a slide is slidably mounted in the cavity, one end of the straight rod extends into the cavity and is fixedly connected to the slide, the side of the slide away from the straight rod is fixedly connected to the inner wall of the cavity through a spring, and a fixing component for fixing the slide is provided on the outside of the slide.

[0011] Furthermore, the fixing assembly includes a limiting rod, a sliding opening connected to the cavity is opened on the outer side of the mounting tube, the limiting rod is located in the sliding opening, one end of the limiting rod is fixedly connected to the slide plate, a swivel is rotatably installed on the outer side of the mounting tube, a rubber pad is provided on the inner side of the swivel, the rubber pad is in contact with the mounting tube, and a movable opening is opened on the outer side of the swivel.

[0012] Furthermore, when the curved plate moves in a direction away from the ball head rod until it cannot move any more, the ball head rod can be separated from the curved plate.

[0013] Furthermore, the ball head rod is made of polyamide.

[0014] Technical effects and advantages of the present invention: 1. The present invention can adjust the direction of the terminal, so that it is convenient to select a suitable tool use angle, thereby facilitating the use of the tool. When disassembling, the direction of the terminal can also be adjusted, so that when there is an obstruction in front of the terminal, the terminal can avoid the obstruction, which is convenient for the use of the tool. When disassembling, the terminal and the wire connection end can be disassembled without cleaning the obstruction in front of the terminal, saving time and effort. 2. The present invention can eliminate the restriction of the ball head sleeve on the ball head rod, so that the ball head rod and the terminal can be pulled out, so that the position of the terminal can be adjusted to a greater extent, so that the terminal can be located in a suitable operating position, thereby facilitating the installation and removal of the terminal and the wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the structure of an equivalent bidirectional conversion CLLC power transformer according to an embodiment of the present invention is shown; Figure 2 The structure diagram of the terminal and the mounting barrel combination according to the embodiment of the present invention is shown in FIG. Figure 1 ; Figure 3 A schematic cross-sectional view of a terminal and a mounting barrel assembly according to an embodiment of the present invention is shown; Figure 4 The embodiment of the present invention is shown Figure 3 The enlarged structural diagram at A in the middle; Figure 5 A schematic diagram of an exploded structure of a terminal and a mounting barrel assembly according to an embodiment of the present invention is shown; Figure 6 The embodiment of the present invention is shown Figure 5 The enlarged structural diagram at B in the middle; Figure 7 The structure diagram of the terminal and the mounting barrel combination according to the embodiment of the present invention is shown in FIG. Figure 2 ; In the figure: 1. support member; 2. magnetic core; 3. primary side; 4. insulating frame; 5. magnetic leakage sheet; 6. terminal; 7. ball head rod; 8. threaded hole; 9. arc plate; 10. connecting rod; 11. shaft rod; 12. torsion spring; 13. ring plate; 14. pull rope; 15. slide plate; 16. straight rod; 17. spring; 18. limit rod; 19. swivel; 20. movable opening; 21. isolation plate; 22. mounting tube; 23. secondary side. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0017] The present invention provides an equivalent bidirectional conversion CLLC power transformer, such as Figures 1 to 7As shown, it includes a pair of support members 1, a magnetic core 2 is arranged between the pair of support members 1, an isolation plate 21 is equidistantly sleeved on the outside of the magnetic core 2 from top to bottom, a pair of primary edges 3 and a pair of secondary edges 23 are arranged on the outside of the magnetic core 2 from top to bottom, a leakage magnetic sheet 5 is arranged on the isolation plate 21, an insulating frame 4 is fixedly installed on the rear side of the magnetic core 2, the insulating frame 4 is fixedly connected to the support member 1, the isolation plate 21 is fixedly connected to the insulating frame 4, terminals 6 cooperating with the primary edge 3 and the secondary edge 23 are symmetrically arranged on the front side of the support member 1, a ball head rod 7 is fixedly installed on the rear side of the terminal 6, a mounting opening corresponding to the terminal 6 is opened on the front side of the support member 1, a ball head sleeve cooperating with the ball head rod 7 is arranged in the mounting opening, a straightening component for straightening the ball head rod 7 is arranged on the rear side of the ball head rod 7, and corresponding threaded holes 8 are opened on the terminal 6 and the ball head rod 7.

[0018] The isolation plate 21 can increase the distance between adjacent primary sides 3, the distance between adjacent secondary sides 23, and the distance between the primary side 3 and the adjacent secondary side 23 to obtain the distributed capacitance C between the windings, and combine the leakage magnetic sheet 5 to adjust the leakage magnetic circuit to obtain the ideal Lr.

[0019] The turns ratio of the primary side 3 and the secondary side 23 can form the required voltage conversion to obtain Lm.

[0020] When the transformer works in two different working modes of charge and discharge, because the characteristics of the primary side 3 and the secondary side 23 windings are consistent, and the magnetic circuit operation effect is the same, the bidirectional performance Lm, C, Lr of the transformer are the same, making the bidirectional conversion equivalent, making the circuit design simpler, and improving the bidirectional energy efficiency utilization rate to 99.5%.

[0021] The left and right lines of the primary side 3 or the secondary side 23 can be connected in parallel or in series as required, so that the transformer can withstand high current and high voltage requirements.

[0022] The function of the isolation plate 21 is to make the transformer better comply with the electrical insulation distance specification, and at the same time greatly improve the voltage level of the transformer from 800V to 10000V high voltage requirements.

[0023] The multi-layer mode of the primary side 3 and the secondary side 23 makes the heat dissipation effect greater and the transformer more integrated, which can increase the power of the same volume by 300%.

[0024] When it is necessary to connect the external wire to the corresponding terminal 6, hold the terminal 6 and rotate it with the ball head rod 7 in the ball head sleeve so that the direction of the terminal 6 can be adjusted. After adjusting to the appropriate direction, fit the connecting end of the wire with the terminal 6. After the screw is passed through the connecting end of the wire and the terminal 6 by an external tool, the rotating tool with the screw is rotated into the threaded hole 8, and then the connecting end of the terminal 6 and the wire is squeezed tightly to achieve the connection between the terminal 6 and the wire. After the connection is completed, release the terminal 6, and the straightening assembly is reset with the ball head rod 7 to straighten the ball head rod 7, thereby resetting the terminal 6. At this point, the connection between the terminal 6 and the wire is completed. The direction of the terminal 6 can be adjusted during the entire connection process, which makes it easy to select a suitable tool use angle, thereby facilitating the use of the tool. When disassembling, the direction of the terminal 6 can also be adjusted, so that when there is an obstruction directly in front of the terminal 6, the terminal 6 can avoid the obstruction, which is convenient for the use of the tool. When disassembling, there is no need to clean the obstruction in front of the terminal 6 to achieve the disassembly of the terminal 6 and the wire connection end, saving time and effort.

[0025] like Figure 3 As shown, the straightening assembly includes a mounting cylinder 22 fixedly installed in the mounting opening, a shaft 11 is rotatably installed inside the mounting cylinder 22, both ends of the shaft 11 are sleeved with torsion springs 12, both ends of the torsion spring 12 are respectively fixedly connected to the mounting cylinder 22 and the shaft 11, a ring plate 13 is symmetrically fixedly sleeved in the middle of the shaft 11, a pull rope 14 is fixedly connected to the middle of the shaft 11, the pull rope 14 is wound on the shaft 11, and the other end of the pull rope 14 is fixedly connected to the middle of the side of the ball head rod 7 away from the terminal 6 through the connecting rod 10.

[0026] When the terminal 6 is moved to rotate with the ball head rod 7 to adjust the direction of the terminal 6, the ball head rod 7 cooperates with the connecting rod 10 to pull the pull rope 14 to make it rotate with the shaft rod 11 in the forward direction. As the shaft rod 11 rotates, the torsion spring 12 is twisted to cause its torsional deformation to generate a force to loosen the terminal 6. At this time, the torsion spring 12 is reset and the shaft rod 11 is reversed and reset, so that the pull rope 14 is reeled in, and then the connecting rod 10 and the ball head rod 7 are pulled, so that the ball head rod 7 and the terminal 6 are finally reset to a horizontal state. Since the terminal 6 will pull the connected line when it moves, the connected line is reset by resetting the terminal 6, so as to avoid the line being pulled out too much and becoming messy, affecting later maintenance.

[0027] like Figure 3 As shown, the spacing distance between the two opposite ring plates 13 is the same as the cross-sectional diameter of the pull rope 14, the outer side of the pull rope 14 fits with the inner sides of the two ring plates 13, and the central axes of the pull rope 14, the connecting rod 10, the ball head rod 7, and the threaded hole 8 are on the same horizontal line.

[0028] The pull rope 14 can cooperate with the connecting rod 10 to finally pull the ball head rod 7 to a horizontal state and reset it.

[0029] like Figures 2 to 7 As shown, the ball head sleeve is composed of a plurality of arc plates 9 equidistantly surrounded and assembled, the inner side of the arc plate 9 matches the outer side of the ball head rod 7, and the arc plate 9 is connected to the mounting tube 22 through a connecting assembly.

[0030] The ball head rod 7 is wrapped by a ball head sleeve composed of a plurality of arc-shaped plates 9, so that the ball head rod 7 can rotate in the formed ball head sleeve, thereby facilitating the adjustment of the ball head rod 7 and the terminal 6.

[0031] like Figures 3 to 6 As shown, the connecting component includes a straight rod 16 fixedly mounted on the outside of the arc plate 9, a cavity is equidistantly opened on the mounting tube 22, the cavity is rectangular in shape, a slide plate 15 is slidably mounted in the cavity, one end of the straight rod 16 extends into the cavity and is fixedly connected to the slide plate 15, and the side of the slide plate 15 away from the straight rod 16 is fixedly connected to the inner wall of the cavity through a spring 17, and a fixing component for fixing the slide plate 15 is provided on the outside of the slide plate 15.

[0032] The fixing of the fixing assembly to the slide plate 15 is cancelled, and the terminal 6 is pulled to make it move outward with the ball head rod 7, so that the arc plate 9 is squeezed to make it move with the straight rod 16 and the slide plate 15 in the direction away from the ball head rod 7. As the slide plate 15 moves, the compression spring 17 causes it to deform and generate a force, and then the ball head rod 7 is separated from the ball head sleeve composed of multiple arc plates 9. The compressed spring 17 releases the force to restore the slide plate 15, the straight rod 16, and the arc plate 9. At this time, the terminal 6 is pulled to make it continue to move with the ball head rod 7 and the connecting rod 10, so that the pull rope 14 pulls the shaft rod 11 to continue to rotate forward to release the pull rope 14, so that the position of the terminal 6 can be adjusted to a greater extent, so that the terminal 6 can be located at a suitable position. The operating position makes it easier to install and remove the terminal 6 and the wire. Hold the terminal 6 and insert it and the ball head rod 7 between the multiple arc plates 9. As the ball head rod 7 enters, the arc plate 9 is squeezed. According to the same principle, when the ball head rod 7 is reset, the compressed spring 17 releases the force to reset the slide plate 15, the straight rod 16, and the arc plate 9. Then, the fixing component of the slide plate 15 is restored, so that the ball head sleeve restricts the ball head rod 7. As the ball head rod 7 is reset, the terminal 6 is released. At this time, the torsion spring 12 is reset and the shaft rod 11 is reversed and reset, so that the winding rope 14 is pulled, and then the connecting rod 10 and the ball head rod 7 are pulled, so that the ball head rod 7 and the terminal 6 are finally reset to a horizontal state.

[0033] like Figure 2 and Figure 4As shown, the fixing assembly includes a limit rod 18, a sliding opening connected to the cavity is opened on the outer side of the mounting tube 22, the limit rod 18 is located in the sliding opening, one end of the limit rod 18 is fixedly connected to the slide plate 15, a swivel 19 is rotatably installed on the outer side of the mounting tube 22, a rubber pad is provided on the inner side of the swivel 19, the rubber pad is in contact with the mounting tube 22, and a movable opening 20 is opened on the outer side of the swivel 19.

[0034] When the swivel 19 is in contact with the limiting rod 18, the limiting rod 18 cannot move, thereby fixing the slide plate 15. The swivel 19 is rotated to rotate the movable opening 20 until it is aligned with the limiting rod 18. At this time, the slide plate 15 and the limiting rod 18 can move away from the ball head rod 7, thereby canceling the restriction on the slide plate 15.

[0035] like Figure 3 As shown, when the arc plate 9 moves in a direction away from the ball head rod 7 until it cannot move any more, the ball head rod 7 can be separated from the arc plate 9 .

[0036] like Figure 3 As shown, the ball head rod 7 is made of polyamide.

[0037] Working principle: when it is necessary to connect the external wire to the corresponding terminal 6, hold the terminal 6 and rotate it with the ball head rod 7 in the ball head sleeve so that the direction of the terminal 6 can be adjusted. When the terminal 6 is turned to rotate with the ball head rod 7 to adjust the direction of the terminal 6, the ball head rod 7 cooperates with the connecting rod 10 to pull the pull rope 14 to make it rotate with the shaft rod 11 in the forward direction. As the shaft rod 11 rotates, the torsion spring 12 is twisted to cause its torsional deformation to produce a force. After adjusting to the appropriate direction, the connecting end of the wire is fitted with the terminal 6. After the screw is passed through the connecting end of the wire and the terminal 6 by an external tool, the rotating tool is rotated with the screw into the threaded hole 8, and then the connecting end of the terminal 6 and the wire is squeezed to achieve the connection between the terminal 6 and the wire. After the connection is completed, the terminal 6 is released, and the torsion spring 12 is reset to rotate the shaft rod 11 in the reverse direction The resetting operation causes the winding rope 14 to be reeled in, thereby pulling the connecting rod 10 and the ball rod 7, so that the ball rod 7 and the terminal 6 are finally reset to a horizontal state. Since the terminal 6 will pull the connected line when it moves, the connected line is reset by resetting the terminal 6, thereby preventing the line from being pulled out too much and becoming messy, affecting later maintenance. At this point, the connection between the terminal 6 and the wire is completed. The direction of the terminal 6 can be adjusted during the entire connection process, so that it is convenient to select a suitable tool use angle, thereby facilitating the use of the tool. When disassembling, the direction of the terminal 6 can also be adjusted, so that when there is an obstruction directly in front of the terminal 6, the terminal 6 can avoid the obstruction, which is convenient for the use of the tool. When disassembling, the obstruction in front of the terminal 6 can be removed to achieve the disassembly of the terminal 6 and the wire connection end, saving time and effort.When the swivel 19 is fitted with the limiting rod 18, the limiting rod 18 cannot move, thereby fixing the slide plate 15. The swivel 19 is rotated to rotate it with the movable opening 20 to align with the limiting rod 18. At this time, the slide plate 15 and the limiting rod 18 can move in the direction away from the ball head rod 7, that is, the restriction on the slide plate 15 is cancelled, and the terminal 6 is pulled to make it move outward with the ball head rod 7, so that the arc plate 9 is squeezed to make it move with the straight rod 16 and the slide plate 15 in the direction away from the ball head rod 7. As the slide plate 15 moves, the compression spring 17 causes it to deform and generate a force, and then the ball head rod 7 is separated from the ball head sleeve composed of multiple arc plates 9. The compressed spring 17 releases the force to reset the slide plate 15, the straight rod 16, and the arc plate 9. At this time, the terminal 6 is pulled to make it continue to move with the ball head rod 7 and the connecting rod 10, so that the pull rope 14 pulls the shaft rod 11 to continue to rotate forward. Release the pull rope 14 so that the position of the terminal 6 can be adjusted to a greater extent, so that the terminal 6 can be located in a suitable operating position, thereby facilitating the installation and removal of the terminal 6 and the wire. Hold the terminal 6 and insert it and the ball head rod 7 between the multiple arc plates 9. As the ball head rod 7 enters, the arc plate 9 is squeezed. The same principle applies. When the ball head rod 7 is reset, the compressed spring 17 releases the force to bring the slide plate 15, the straight rod 16, and the arc plate 9 back to normal. Then, the swivel 19 is rotated to make the movable opening 20 staggered with the limit rod 18, and the fixation of the slide plate 15 is restored, so that the ball head sleeve restricts the ball head rod 7. As the ball head rod 7 is reset, the terminal 6 is released. At this time, the torsion spring 12 is reset and the shaft rod 11 is reversed and reset, so that the reel pull rope 14 is reeled, and then the connecting rod 10 and the ball head rod 7 are pulled, so that the ball head rod 7 and the terminal 6 are finally reset to a horizontal state. ;

[0038] The above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them.

Claims

1. An equivalent bidirectional conversion CLLC power transformer, comprising a pair of support members (1), characterized in that: A magnetic core (2) is provided between a pair of the support members (1); an isolation plate (21) is equidistantly sleeved on the outside of the magnetic core (2) from top to bottom; a pair of primary edges (3) and a pair of secondary edges (23) are provided on the outside of the magnetic core (2) from top to bottom; a magnetic leakage sheet (5) is provided on the isolation plate (21); an insulating frame (4) is fixedly mounted on the rear side of the magnetic core (2); the insulating frame (4) is fixedly connected to the support member (1); and the isolation plate (21) is fixedly connected to the insulating frame (4). The front side of the support member (1) is symmetrically provided with terminals (6) that cooperate with the primary side (3) and the secondary side (23); a ball head rod (7) is fixedly installed on the rear side of the terminal (6); a mounting opening corresponding to the terminal (6) is provided on the front side of the support member (1); a ball head sleeve that cooperates with the ball head rod (7) is provided in the mounting opening; a straightening component for straightening the ball head rod (7) is provided on the rear side of the ball head rod (7); and corresponding threaded holes (8) are provided on the terminal (6) and the ball head rod (7).

2. The equivalent bidirectional conversion CLLC power transformer according to claim 1 is characterized in that: The straightening assembly comprises a mounting cylinder (22) fixedly mounted in the mounting opening, a shaft (11) being rotatably mounted inside the mounting cylinder (22), both ends of the shaft (11) being sleeved with torsion springs (12), the two ends of the torsion spring (12) being respectively fixedly connected to the mounting cylinder (22) and the shaft (11), a ring plate (13) being symmetrically fixedly sleeved in the middle of the shaft (11), a pull rope (14) being fixedly connected to the middle of the shaft (11), the pull rope (14) being wound on the shaft (11), and the other end of the pull rope (14) being fixedly connected to the middle of a side of the ball head rod (7) away from the terminal (6) through a connecting rod (10).

3. The equivalent bidirectional conversion CLLC power transformer according to claim 2 is characterized in that: The spacing distance between the two opposing ring plates (13) is the same as the cross-sectional diameter of the pull rope (14); the outer side of the pull rope (14) fits the inner sides of the two ring plates (13); and the central axes of the pull rope (14), the connecting rod (10), the ball head rod (7), and the threaded hole (8) are on the same horizontal line.

4. The equivalent bidirectional conversion CLLC power transformer according to claim 3 is characterized in that: The ball head sleeve is composed of a plurality of arc-shaped plates (9) which are equidistantly surrounded and assembled; the inner side of the arc-shaped plate (9) matches the shape of the outer side of the ball head rod (7); and the arc-shaped plate (9) is connected to the mounting cylinder (22) via a connecting assembly.

5. The equivalent bidirectional conversion CLLC power transformer according to claim 4 is characterized in that: The connecting assembly comprises a straight rod (16) fixedly mounted on the outside of the arc-shaped plate (9); a cavity is equidistantly arranged around the mounting tube (22); the cavity is rectangular in shape; a slide plate (15) is slidably mounted in the cavity; one end of the straight rod (16) extends into the cavity and is fixedly connected to the slide plate (15); a side of the slide plate (15) away from the straight rod (16) is fixedly connected to the inner wall of the cavity via a spring (17); and a fixing assembly for fixing the slide plate (15) is provided on the outside of the slide plate (15).

6. The equivalent bidirectional conversion CLLC power transformer according to claim 5, characterized in that: The fixing assembly comprises a limit rod (18), a sliding opening communicating with the cavity is provided on the outer side of the mounting tube (22), the limit rod (18) is located in the sliding opening, one end of the limit rod (18) is fixedly connected to the slide plate (15), a rotating ring (19) is rotatably installed on the outer side of the mounting tube (22), a rubber pad is provided on the inner side of the rotating ring (19), the rubber pad abuts against the mounting tube (22), and a movable opening (20) is provided on the outer side of the rotating ring (19).

7. The equivalent bidirectional conversion CLLC power transformer according to claim 6 is characterized in that: When the arc-shaped plate (9) moves in a direction away from the ball head rod (7) until it cannot move any more, the ball head rod (7) can be separated from the arc-shaped plate (9).

8. The equivalent bidirectional conversion CLLC power transformer according to claim 7 is characterized in that: The ball head rod (7) is made of polyamide.

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