A chip magnetic ring transformer in an energy storage circuit

Abstract

The present invention relates to a patch magnetic ring transformer of an energy storage circuit, comprising a frame, a magnetic ring and a coil wound on the magnetic ring, and is characterized in that: it also includes a lock buckle, the frame includes a base with pins and a bracket vertically fixed on the base, the bracket is used to pass through the inside of the magnetic ring, a lock hole is opened at the top center of the bracket, the lock buckle includes a cover plate and a plug column vertically fixed to the bottom surface of the cover plate, a fork is provided at the lower end of the plug column so that its lower end is divided into two petals, and a flange protruding outward is provided at the outer edge of the lower end of the two petals, and the lock hole is used for the plug column to be inserted. The patch magnetic ring transformer, the magnetic ring and the coil are bonded and fixed to the base by adhesive, and the lock buckle is buckled on the bracket, which greatly improves the stability of the connection between the magnetic ring and the coil and the frame, and the situation that the magnetic ring and the coil are not easy to loosen; in addition, during the production process, the cover plate can be sucked tightly by an automatic suction cup to achieve the absorption and transfer of the transformer, overcoming the defects of low efficiency and easy error of traditional manual feeding.

Description

Technical Field

[0001] The invention relates to an electronic component, in particular to a patch magnetic toroidal transformer in an energy storage circuit. Background Art

[0002] In electrical equipment and wireless circuits, transformers are often used to increase or decrease voltage, match impedance, and provide safety isolation. In a generator, whether the coil moves through a magnetic field or the magnetic field moves through a fixed coil, an electric potential can be induced in the coil. In both cases, the value of the magnetic flux remains unchanged, but the amount of magnetic flux intersecting the coil changes. This is the principle of mutual induction. At present, electronic equipment is becoming increasingly miniaturized, and high-density surface-mounted small transformers have become a direction for the miniaturization of electronic equipment. Chip transformers are also increasingly being used in various electronic devices.

[0003] The existing SMD magnetic ring transformer mainly includes a base, a magnetic ring and a coil, and the base has pins. In the process of assembling the transformer, the coil is first wound on the magnetic ring, glue is applied on the base, the coil and the magnetic ring are pressed against the base, the magnetic ring, the coil and the base are fixed by the adhesive force of the glue, and finally the end of the coil is welded and fixed to the pins on the base.

[0004] This type of SMD magnetic ring transformer relies solely on glue to fix the magnetic ring and the coil. After long-term use, the glue ages and cracks, and the coil and the magnetic ring are prone to loosening, which needs to be improved. Summary of the invention

[0005] Based on the above description, the present invention provides a chip magnetic toroidal transformer in an energy storage circuit to solve the problem that the magnetic ring and coil of the existing chip magnetic toroidal transformer are prone to loosening.

[0006] The technical solution of the present invention to solve the above technical problems is as follows:

[0007] A patch magnetic toroidal transformer for an energy storage circuit comprises a skeleton, a magnetic toroid and a coil wound on the magnetic toroid, and also comprises a lock buckle. The skeleton comprises a base with pins and a bracket vertically fixed on the base, the bracket is used to pass through the interior of the magnetic toroid, a lock hole is provided at the top center of the bracket, the lock buckle comprises a cover plate and a plug post vertically fixed to the bottom surface of the cover plate, a fork is provided at the lower end of the plug post so that its lower end is divided into two lobes, and a flange protruding outward is provided at the outer edge of the lower end of the two lobes, and the lock hole is used for the plug post to be inserted.

[0008] As a preferred solution: movable cavities are symmetrically arranged on both sides of the lower end of the lock hole in the bracket, and a conical pushing piece is arranged at the center of the lower end of the lock hole, a movable block is installed in the movable cavity, the movable block can move in the direction of approaching and away from the pushing piece, and the side of the movable block facing away from the pushing block is an inclined surface; vertical guide holes are symmetrically arranged on both sides of the lock hole in the bracket, the lower ends of the guide holes are connected to the movable cavity, and a push rod that can move up and down is arranged in the guide hole, and the lower end of the push rod is in contact with the inclined surface of the movable block; a receiving groove is arranged at the upper end of the guide hole, the inner end of the receiving groove faces the lock hole and the outer end thereof faces the outside of the bracket, and the upper end of the guide hole is connected to the outer end of the receiving groove The inner end of the accommodating groove is connected with the lock hole, and the inner end position height of the accommodating groove is lower than the outer end position height, so that the accommodating groove is inclined; a long lock tongue is arranged in the accommodating groove, and the two ends of the lock tongue are in arc shape, and a waist-shaped hole is arranged on the lock tongue along its length direction, and a support shaft is passed through the waist-shaped hole, and the support shaft is fixed to the side wall of the accommodating groove, and the upper end of the push rod is arranged as an inclined surface, and the inclined surface contacts the end of the lock tongue; a limiting groove is symmetrically provided on the upper end side wall of the plug column, and the limiting groove is used for the lock tongue to enter, and the height of the limiting groove is greater than the height of the lock tongue; an elastic gasket is fixed along the circumference of the bottom edge of the cover plate, and the elastic gasket is used to press the coil.

[0009] As a preferred solution: a magnet block is further arranged inside the bracket and outside the accommodating groove, and the locking tongue is made of stainless steel.

[0010] As a preferred solution: the top of the bracket is provided with a chamfer for guiding the top end of the bracket into the magnetic ring.

[0011] As a preferred solution: the elastic gasket is made of porous rubber material, and its interior is a porous structure.

[0012] As a preferred solution: the upper surface of the cover plate is coated with a wear-resistant coating.

[0013] As a preferred solution: it also includes an elastic ring, through holes are symmetrically opened on the petal body of the plug post, and the elastic ring passes through two groups of through holes. When the plug post is not inserted into the lock hole, the elastic ring is in a natural state.

[0014] As a preferred solution: the elastic ring is a rubber band.

[0015] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0016] The chip magnetic ring transformer uses glue to glue the magnetic ring and the coil to the base, and installs the lock buckle on the bracket so that the cover of the lock buckle presses the magnetic ring and the coil, which greatly improves the stability of the connection between the magnetic ring and the coil and the skeleton, and it is not easy for the magnetic ring and the coil to loosen; in addition, due to the addition of the cover plate, the cover plate can be sucked tightly by an automatic suction cup during the production process, thereby realizing the absorption and transfer of the transformer, overcoming the defects of low efficiency and easy errors of traditional manual loading. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the skeleton structure of the SMD magnetic toroidal transformer in the first embodiment;

[0018] Figure 2 It is a side view of the chip magnetic toroidal transformer in the first embodiment;

[0019] Figure 3 It is a top view of the chip magnetic toroidal transformer in the first embodiment;

[0020] Figure 4 Schematic diagram of the internal structure of the chip magnetic toroidal transformer in Example 1;

[0021] Figure 5 for Figure 4 A magnified view of part A in FIG.

[0022] Figure 6 for Figure 4 A magnified view of part B in FIG.

[0023] Figure 7 Schematic diagram of the locking structure of the SMD magnetic toroidal transformer in Embodiment 1;

[0024] Figure 8 It is a schematic diagram of the unlocking structure of the SMD magnetic toroidal transformer in the first embodiment;

[0025] Fig. 9 This is a schematic diagram of the structure of the plug post in the second embodiment.

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] 1. Skeleton; 101. Base; 102. Pin; 103. Bracket; 104. Lock hole; 105. Chamfer; 106. Push piece; 107. Guide hole; 108. Active cavity; 109. Accommodation groove; 110. Push rod; 111. Active block; 112. Lock tongue; 113. Waist-shaped hole; 114. Support shaft; 115. Magnet block; 2. Lock buckle; 201. Insert column; 202. Cover plate; 203. Fork mouth; 204. Flange; 205. Limiting groove; 206. Elastic gasket; 207. Through hole; 208. Elastic ring; 3. Magnetic ring; 4. Coil; 5. Glue. DETAILED DESCRIPTION

[0028] Embodiment 1:

[0029] Reference Figure 1 , Figure 2 and Figure 3 A patch magnetic ring 3 transformer of an energy storage circuit includes a skeleton 1, a magnetic ring 3, a coil 4 wound on the magnetic ring 3, and a lock 2.

[0030] The frame 1 includes a base 101 with pins 102 and a bracket 103 vertically fixed on the base 101, and the bracket 103 is used to pass through the inside of the magnetic ring 3. A lock hole 104 is opened at the center of the top of the bracket 103, and a chamfer 105 is provided at the top of the bracket 103 for guiding the top end of the bracket 103 into the magnetic ring 3.

[0031] The lock buckle 2 includes a cover plate 202 and a plug 201 vertically fixed to the bottom surface of the cover plate 202. A fork 203 is provided at the lower end of the plug 201, so that the lower end of the plug 201 is divided into two lobes, and a flange 204 protruding outward is provided at the outer edge of the lower end of the two lobes. The lock hole 104 is used for inserting the plug 201.

[0032] The assembly process of the patch magnetic ring 3 transformer is as follows: winding the coil 4 on the magnetic ring 3, applying adhesive 5 on the base 101, passing the bracket 103 through the magnetic ring 3 until the coil 4 on the magnetic ring 3 contacts the base 101, and welding the end of the coil 4 to the corresponding pin 102; then placing the lock buckle 2 on the top of the frame 1, aligning the lower end of the plug post 201 with the lock hole 104, and then inserting the plug post 201 into the lock hole 104. The edge is provided with a flange 204. When the lower end of the plug post 201 is squeezed into the lock hole 104, the petals are squeezed and moved closer to each other. At this time, the lower end of the plug post 201 undergoes elastic deformation to generate elastic force. When the plug post 201 enters the lock hole 104, the elastic force of the lower end of the plug post 201 pushes the petals in the opposite direction, so that the flange 204 of the petals presses against the inner wall of the lock hole 104, so that the plug post 201 can be kept in the lock hole 104 through contact friction, thereby ensuring that the lock buckle 2 and the frame 1 will not detach.

[0033] In this state, the adhesive 5 fixes the bottom of the coil 4 and the base 101 together, and the cover 202 presses the top of the coil 4, that is, the coil 4 and the magnetic ring 3 are doubly fixed, which greatly improves the stability of the connection between the magnetic ring 3 and the coil 4 and the skeleton 1, and it is not easy for the magnetic ring 3 and the coil 4 to loosen; in addition, due to the addition of the cover 202, the cover 202 can be sucked tightly by an automated suction cup during the production process, thereby realizing the absorption and transfer of the transformer, overcoming the defects of low efficiency and easy errors of traditional manual loading.

[0034] Reference Figure 4 , Figure 5and Figure 6 In this embodiment, an active cavity 108 is symmetrically arranged on both sides of the lower end of the locking hole 104 in the bracket 103, and a conical pushing piece 106 is arranged at the center of the lower end of the locking hole 104. A movable block 111 is installed in the active cavity 108. The movable block 111 can move toward and away from the pushing piece 106, and the side of the movable block 111 away from the pushing block is an inclined surface; vertical guide holes 107 are symmetrically arranged on both sides of the locking hole 104 in the bracket 103, and the lower end of the guide hole 107 is aligned with the active cavity 108. 08 is connected, a push rod 110 which can move up and down is arranged in the guide hole 107, and the lower end of the push rod 110 contacts the inclined surface of the movable block 111; a receiving groove 109 is arranged at the upper end of the guide hole 107, the inner end of the receiving groove 109 faces the locking hole 104 and the outer end thereof faces the outside of the bracket 103, the upper end of the guide hole 107 is connected with the outer end of the receiving groove 109, the inner end of the receiving groove 109 is connected with the locking hole 104, the inner end position height of the receiving groove 109 is lower than the outer end position height, so that the receiving groove 109 is inclined.

[0035] An elongated locking tongue 112 is arranged in the receiving groove 109, and both ends of the locking tongue 112 are arc-shaped. A waist-shaped hole 113 is arranged on the locking tongue 112 along its length direction, and a support shaft 114 is passed through the waist-shaped hole 113, and the support shaft 114 is fixed to the side wall of the receiving groove 109. Such a structure allows the locking tongue 112 to rotate around the support shaft 114, and the relative position of the locking tongue 112 and the support shaft 114 can be adjusted.

[0036] The upper end of the push rod 110 is configured as an inclined surface, and the inclined surface contacts the end of the locking tongue 112 .

[0037] A limiting groove 205 is symmetrically provided on the upper side wall of the plug post 201, and the limiting groove 205 is used for the locking tongue 112 to enter, and the height of the limiting groove 205 is greater than the height of the locking tongue 112; an elastic gasket 206 is fixed along the circumference of the bottom edge of the cover plate 202, and the elastic gasket is used to compress the coil 4.

[0038] like Figure 4 As shown, in the initial state, that is, when the lock buckle 2 is separated from the bracket 103, the movable block 111 is located at its innermost position, and the distance between the movable block 111 and the pushing member 106 is the smallest; the top rod 110 is located at its lowest position, the lock tongue 112 is in a horizontal state and the lock tongue 112 is located at its outermost position, that is, the distance between the lock tongue 112 and the center of the lock hole 104 is the largest, and the lock tongue 112 is hidden in the accommodating groove 109.

[0039] Reference Figure 7During the assembly of the transformer, after the magnetic ring 3 with the coil 4 is sleeved on the bracket 103, the lock buckle 2 can be installed immediately; during the installation of the lock buckle 2, when the plug post 201 enters the lock hole 104 and the lower end of the plug post 201 begins to contact the pushing piece 106, the cover plate 202 continues to be pressed down, and at this time the pushing piece 106 begins to enter the fork 203 of the plug post 201; since the pushing piece 106 is conical, during the subsequent descent of the plug post 201, the pushing piece 106 will push the petals at the lower end of the plug post 201, so that the two sets of petals bend outward and move away from each other; during the outward bending process of the petals, the flange 204 will contact the movable block 111 and push the movable block 111 outward, and when the movable block 111 moves outward, it will drive the push rod 110 to rise, so that the upper end of the push rod 110 begins to push the lock tongue 112 to move inward, and at this time the lock tongue 112 begins to approach the center of the lock hole 104.

[0040] That is, in the process of the plug post 201 entering the lock hole 104, the limiting groove 205 on the plug post 201 drops synchronously with the plug post 201, and when the lower end of the plug post 201 contacts the pushing piece 106, the lock tongue 112 begins to approach the plug post 201, and at the same time, the elastic gasket 206 contacts the coil 4 and begins to squeeze the coil 4 downward. When the inner end of the lock tongue 112 enters the limiting groove 205, the cover plate 202 is released. At this time, the elastic force of the elastic gasket 206 will drive the cover plate 202 to connect the plug post 201 and retreat a short distance upward. At this time, the bottom surface of the limiting groove 205 presses the inner end of the lock tongue 112 upward, and the outer end of the lock tongue 112 is pressed upward by the bottom surface of the solute groove, and combined with the supporting force of the support shaft 114, the lock tongue 112 can be stably maintained in the current horizontal state. At this time, the plug post 201 is locked by the lock tongue 112 and cannot be pulled out, thereby completing the connection and fixation of the lock buckle 2 and the frame 1.

[0041] Reference Figure 8 When the latch 202 is to be disassembled, it is only necessary to continue to press the cover plate 202 downward, at which time the plug post 201 continues to descend, and the pushing member 106 continues to push the petal body outward; the flange 204 drives the movable block 111 to continue to move outward, at which time the push rod 110 continues to rise, and the push rod 110 drives the lock tongue 112 to further extend into the limiting groove 205, until the outer end of the waist-shaped hole 113 on the lock tongue 112 contacts the support shaft 114, so that the lock tongue 112 moves to its innermost position; at this time, the weight of the section of the lock tongue 112 located on the inner side of the support shaft 114 is greater than the weight of the section located on the outer side of the support shaft 114, and according to the lever principle, it can be known that the inner end of the lock tongue 112 will swing downward, and the swing of the lock tongue 112 is accompanied by the decline of the limiting groove 205, which can make the inner end of the lock tongue 112 get rid of the limiting groove 205; when the lock tongue 112 is separated from the limiting groove 205, the gravity of the lock tongue 112 itself keeps it in the position as shown in the figure. Figure 8, and then the pressure on the cover plate 202 can be released and the cover plate 202 can be held to lift the lock buckle 2 upward. Since the lock tongue 112 remains in the downward swing state so that it is hidden in the receiving groove 109 again, the lock tongue 112 will not enter the limiting groove 205 during the process of lifting the plug post 201 upward, which can ensure that the plug post 201 can be pulled out smoothly. When the flange 204 at the lower end of the plug post 201 rises to the position where the receiving groove 109 is located, the elastic force of the petal body itself allows the flange 204 to enter the receiving groove 109. After the flange 204 enters the receiving groove 109, it contacts the bottom of the inner end of the lock tongue 112 When the locking nut 112 is unlocked, the locking nut 112 is released from the locking hole 104, and the magnetic ring 3 and the coil 4 are separated from the frame 1. When the locking nut 112 is released, the weight of the outer end of the locking nut 112 is greater than the weight of the inner end of the locking nut 112, and the locking nut 112 returns to its initial position. When the plug 201 is completely disengaged from the lock hole 104, the lock buckle 2 is unlocked. After that, the adhesive force of the adhesive 5 on the coil 4 can be released by hot melting or other means, and the connection between the coil 4 and the pin 102 can be melted, so that the magnetic ring 3 and the coil 4 can be separated from the frame 1 as a whole.

[0042] By adopting the above structure and operation, the coil 4 and the magnetic ring 3 can be effectively fixed to prevent the coil 4 and the magnetic ring 3 from loosening after the transformer is used for a long time; and the locking and unlocking of the lock 2 can be achieved through a simple two-level pressing action, which greatly facilitates the overall assembly and disassembly of the chip magnetic ring 3 transformer.

[0043] Considering that when the lock buckle 2 is separated from the frame 1, the lock tongue 112 can move freely in the initial state. During the transportation of the frame 1, the lock tongue 112 may automatically extend into the lock hole 104 due to the placement direction and shaking, affecting the subsequent smooth assembly of the lock buckle 2.

[0044] To avoid the above situation, in this embodiment, a magnet block 115 is further provided inside the bracket 103 and on the outside of the accommodating groove 109. The lock tongue 112 is made of stainless steel. When the lock tongue 112 is in the initial position, its outer end is attracted by the magnetic force of the magnet block 115, so that the lock tongue 112 can be stably and reliably maintained in the initial position, avoiding displacement of the lock tongue 112 due to its own gravity or shaking.

[0045] The elastic gasket 206 in this embodiment is made of porous rubber material, and its interior is a porous structure. Such a material prevents the elastic gasket 206 from hardening and losing its elasticity after long-term use.

[0046] In addition, a wear-resistant coating is coated on the upper surface of the cover plate 202, and the wear-resistant coating can protect the cover plate 202 and prevent the cover plate 202 from being scratched and the surface smoothness is reduced, so that it cannot be smoothly sucked by the suction cup.

[0047] Embodiment 2:

[0048] Reference Fig. 9 This embodiment adds an elastic ring 208 on the basis of the first embodiment. Through holes 207 are symmetrically opened on the petals of the plug post 201. The elastic ring 208 passes through two groups of through holes 207. When the plug post 201 is not inserted into the lock hole 104, the elastic ring 208 is in a natural state, that is, the elastic ring 208 is not stretched. The elastic ring 208 plays a boosting role. When the two groups of petals are away from each other, the elastic ring 208 is stretched and elastically deformed. The elastic force of the elastic ring 208 can drive the two groups of petals to move closer to each other, so as to avoid the situation where the two groups of petals cannot be retracted and restored after long-term use.

[0049] The elastic ring 208 in this embodiment is a rubber band.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A chip magnetic toroidal transformer for energy storage circuit, comprising a frame, a magnetic toroid and a coil wound on the magnetic toroid. Its characteristics are: The lock is also provided with a lock buckle, wherein the skeleton comprises a base with pins and a bracket vertically fixed on the base, the bracket is used to pass through the interior of the magnetic ring, a lock hole is opened at the top center of the bracket, the lock buckle comprises a cover plate and a plug column vertically fixed to the bottom surface of the cover plate, a fork is provided at the lower end of the plug column to divide its lower end into two petals, and a flange protruding outward is provided at the outer edge of the lower end of the two petals, and the lock hole is used for the plug column to be inserted; an active cavity is symmetrically provided on both sides of the bracket and located at the lower end of the lock hole, and a conical pushing piece is provided at the center of the lower end of the lock hole, a movable block is installed in the active cavity, the movable block can move in the direction of approaching and moving away from the pushing piece, and the side of the movable block facing away from the pushing block is an inclined surface; vertical guide holes are symmetrically provided on both sides of the bracket and located at the lock hole, the lower end of the guide hole is connected to the active cavity, a push rod that can move up and down is provided in the guide hole, and the push rod The lower end is in contact with the inclined surface of the movable block; the upper end of the guide hole is provided with a receiving groove, the inner end of the receiving groove faces the locking hole and the outer end thereof faces the outside of the bracket, the upper end of the guide hole is connected with the outer end of the receiving groove, the inner end of the receiving groove is connected with the locking hole, the inner end position height of the receiving groove is lower than the outer end position height, so that the receiving groove is inclined; a long lock tongue is provided in the receiving groove, the two ends of the lock tongue are arc-shaped, a waist-shaped hole is provided on the lock tongue along its length direction, a support shaft is passed through the waist-shaped hole, the support shaft is fixed to the side wall of the receiving groove, the upper end of the push rod is set to an inclined surface, and the inclined surface contacts the end of the lock tongue; a limiting groove is symmetrically provided on the upper end side wall of the plug column, the limiting groove is used for the lock tongue to enter, and the height of the limiting groove is greater than the height of the lock tongue; an elastic gasket is fixed to the bottom edge of the cover plate along its circumference, and the elastic gasket is used to press the coil.

2. The chip magnetic toroidal transformer of the energy storage circuit according to claim 1, Its characteristics are: A magnet block is also arranged inside the bracket and outside the accommodating groove, and the locking tongue is made of stainless steel.

3. The chip magnetic toroidal transformer of the energy storage circuit according to claim 1, Its characteristics are: The top of the bracket is provided with a chamfer for guiding the top end of the bracket into the magnetic ring.

4. The chip magnetic toroidal transformer of the energy storage circuit according to claim 1, Its characteristics are: The elastic gasket is made of porous rubber material, and its interior is a porous structure.

5. The chip magnetic toroidal transformer of the energy storage circuit according to claim 2, Its characteristics are: The upper surface of the cover plate is coated with a wear-resistant coating.

6. The chip magnetic toroidal transformer of the energy storage circuit according to claim 1, Its characteristics are: It also includes an elastic ring. Through holes are symmetrically opened on the petal body of the plug post. The elastic ring passes through two groups of through holes. When the plug post is not inserted into the lock hole, the elastic ring is in a natural state.

7. The chip magnetic toroidal transformer of the energy storage circuit according to claim 6, Its characteristics are: The elastic ring is a rubber band.

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