Transformer of SMD (Surface Mount Device) electronics

Abstract

The invention discloses a surface-mounted electronic transformer, which relates to the technical field of surface-mounted electronic transformers and comprises a transformer body and surface-mounted pins fixedly mounted on the left side and the right side of the rear of the transformer body. An adaptive mechanism is arranged in the transformer body, the adaptive mechanism comprises an adaptive framework, and adaptive lining plates are arranged on the outer side of the adaptive framework in an equal-angle sliding mode; a positioning mechanism is arranged outside the adaptive lining plate, the positioning mechanism comprises a positioning pressing plate, the positioning mechanism comprises a separation lining sheet, and the lead winding is separated and positioned through the separation lining sheet. According to the SMD electronic transformer, the adaptive framework in the transformer body is used for positioning the adaptive lining plate, the slidable adaptive lining plate changes the specification and range of the lead winding during winding, meanwhile, the positioning pressing plate is extruded to drive the separation lining plate to slide out during winding, then the lead winding is separated and positioned, and the situations of loosening and slipping are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of chip electronic transformers, in particular to a chip electronic transformer. Background Art

[0002] The chip electronic transformer is a miniaturized electronic component that combines surface mount technology with high-frequency power conversion technology. It is mainly used for voltage conversion and signal isolation in modern electronic equipment. It realizes power conversion through semiconductor switching devices and high-frequency magnetic cores. Its structure is highly integrated, and the coil and iron core are encapsulated in a plastic shell. It is compact and can be directly soldered on the circuit board without the need for additional fixing brackets. Unlike traditional industrial frequency transformers, the chip electronic transformer adopts the "AC-DC-AC" conversion process, realizes voltage conversion through a small high-frequency transformer, and uses the principle of electromagnetic induction to transfer energy. Due to the high frequency, the cross-sectional area and number of turns of the magnetic core are greatly reduced, and the volume is significantly reduced. ‌‌ The utility model with announcement number CN209912703U discloses a chip electronic transformer. The top of the wire rack is provided with a groove, which can effectively dissipate the heat of the coil; the wire rack is also provided with heat dissipation holes where the chip pins are embedded to prevent the chip pins from being deformed or falling off due to heat during welding; in addition, the number of windings can be increased to 9-10 to meet the needs of multiple outputs.

[0003] The utility model with announcement number CN206460850U discloses a new type of chip electronic transformer. By setting a horizontal double-sided vertical winding method for flat copper wire and a chip-type structure of the skeleton, the flat wire vertical winding is changed to a chip-type SMD structure, which reduces the overall height of the product and can be used for production plug-in automation, avoiding the common flat wire vertical winding structure of the pin type, which causes the plate to be thick, and the product cannot be inserted manually, and the problem of plug-in automation cannot be produced.

[0004] However, the above-mentioned SMD electronic transformer still has the following problems during actual use: the winding is positioned by the transformer frame to facilitate SMD welding, but the winding frame of this type of transformer has fixed specifications, and after forming, it can only be installed for lead windings of fixed specifications. The winding frame cannot be effectively adjusted according to production and processing requirements, and multiple groups of windings on a single frame will also be deformed, thereby affecting the normal operation and use of the transformer.

[0005] Therefore, we propose a chip electronic transformer to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a transformer for patch electronics, which solves the problem that the existing transformer bobbin is used to position the windings so that patch welding can be performed. However, the winding bobbin of this type of transformer has fixed specifications and can only be installed for lead windings of fixed specifications after molding. The winding bobbin cannot be effectively adjusted according to production and processing requirements, and multiple groups of windings on a single bobbin will also be deformed, thereby affecting the normal operation and use of the transformer.

[0007] To achieve the above object, the present invention provides the following technical solution: a chip electronic transformer, comprising a transformer body, and chip pins fixedly mounted on the left and right sides of the rear of the transformer body; An adapting mechanism is provided inside the transformer body, and the adapting mechanism includes an adapting frame, and an adapting lining is provided on the outside of the adapting frame in an equiangular sliding manner, and a lead winding is wound around the outside of the adapting lining; A positioning mechanism is provided on the outside of the adapting lining, and the positioning mechanism includes a positioning pressure plate, and the positioning mechanism includes a separating lining, and the lead winding is separated and positioned by the separating lining.

[0008] Preferably, the adaptation mechanism includes an adaptation frame fixedly installed at the internal center position of the transformer body, and the outside of the adaptation frame is provided with adaptation grooves at equal angles, and the adaptation grooves are used to install the adaptation lining, so that the adaptation lining is slid inside the transformer body to adjust the installation requirements of different lead windings.

[0009] Preferably, the adaptation mechanism includes a bidirectional threaded rod, and the bidirectional threaded rod is rotatably installed at the internal center position of the adaptation frame through a bearing, and the upper and lower outer walls of the bidirectional threaded rod are threadedly connected to guide sliders, and the outer walls of the symmetrically arranged guide sliders are hingedly connected to the inner end of the push flip rod at equal angles.

[0010] Preferably, the adaptation mechanism includes a guide slide, and the guide slide is fixedly installed at the inner center position of the adaptation lining plate set at equal angles, and the upper and lower sides of the inner wall of the adaptation lining plate are hingedly connected to the outer end of the push-turn rod, so that after the push-turn rod rotates, it contacts the hinged guide slide and the adaptation lining plate to move.

[0011] Preferably, the positioning mechanism includes a positioning pressure plate that is equidistantly slidably arranged on the outside of the adapter lining, and the upper and lower sides of the inner ends of the equidistantly arranged positioning pressure plates are fixedly connected to the outer ends of the main positioning slide rods, and the inner ends of the symmetrically arranged main positioning slide rods slide through the guide slides connected to the inner side of the adapter lining, and the symmetrically arranged main positioning slide rods and the guide slides are connected to each other through reset springs.

[0012] Preferably, the positioning mechanism includes a positioning slot, and the positioning slot is opened at equal distances inside the adapter liner, and the separation linings included in the positioning mechanism are slidably installed on the upper and lower sides of the symmetrically opened positioning slot, and the separation linings are installed in groups of two, and the separation linings and the positioning pressure plates are staggered.

[0013] Preferably, the positioning mechanism includes a secondary positioning slide rod, and the inner end of the secondary positioning slide rod is fixedly connected to the center position of the inner side of the separating lining, and the inner end of the secondary positioning slide rod slides through the guide slide rod arranged on the inner side of the adapter lining, and the symmetrically arranged secondary positioning slide rod and the guide slide rod are connected to each other through a resistance spring.

[0014] Preferably, the positioning mechanism includes a traction steel cable, and the outer end of the traction steel cable is fixedly connected to the inner end of the main positioning slide rod, and after the middle part of the traction steel cable is wrapped around the guide slide, its inner end is fixedly connected to the inner end of the auxiliary positioning slide rod, and the positioning pressure plate in the initial state is away from the outer wall of the adapter liner, so as to drive the partition lining to be received in the positioning slide groove opened inside the adapter liner.

[0015] Preferably, the adaptor linings included in the adaptor mechanism are distributed in a "V" shape, and the adaptor linings slide and fit at the four corners of the outside of the adaptor frame, and the installation of the lead windings under different specifications and requirements can be changed by sliding the adaptor linings.

[0016] Preferably, the positioning pressure plate included in the positioning mechanism is distributed in a "V" shape. The positioning pressure plate is driven to slide inward by the winding of the lead winding, so that the positioning pressure plate drives the corresponding separating lining to slide outward, thereby positioning each group of installed lead windings to avoid looseness and slipping.

[0017] Compared with the prior art, the present invention has the following beneficial effects: the transformer of the patch electronics is positioned according to the adaptor lining by the adaptor frame inside the transformer body; the slidable adaptor lining changes the specifications and range of the lead winding during winding; at the same time, the positioning pressing plate is squeezed during winding to drive the separation lining to slide out, thereby separating and positioning the lead winding to avoid looseness and slippage. The specific contents are as follows: 1. The adapter frame is installed at the inner center of the transformer body. The adapter linings are set at equal angles and are initially attached to the outer side of the adapter frame, so that the minimum specification distribution is achieved during the winding process.

[0018] 2. Rotate the bidirectional threaded rod inside the adapter frame to drive the guide slider and the hinged push-flip rod to slide inward synchronously. The push-flip rod resists the hinged guide slide and the adapter liner at the outer end to slide outward, so that the adapter liner set at equal angles slides to change the winding range of the lead winding.

[0019] 3. The lead winding is wound on the positioning pressure plate on the outside of the adaptation lining. When winding, the positioning pressure plate and the main guide slide bar are driven to slide inward, so that the positioning pressure plate fits the outer wall of the adaptation lining. After the adaptation lining is adjusted, the positioning pressure plate and the lead winding are in contact with each other, thereby improving the adaptation effect.

[0020] Furthermore, after the moving positioning pressure plate drives the main guide slide bar to move, the fixedly connected traction cable is loosened, and the auxiliary positioning slide bar that is not limited by the traction cable is compressed by the resistance spring to drive the separating lining to slide out of the positioning slide groove so as to protrude from the outer wall of the positioning pressure plate, thereby separating and positioning each group of lead windings to avoid looseness and slipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the positioning plate installation structure of the present invention; Figure 3 For the present invention Figure 2 A in the middle is an enlarged structural diagram; Figure 4 This is a schematic diagram of the structure of the positioning plate and the separation lining after sliding; Figure 5 This is a schematic diagram of the structure of the adapter liner after adjustment of the present invention; Figure 6 This is a schematic diagram of the structure of the installation of the bidirectional threaded rod of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the adapter skeleton of the present invention; Figure 8 This is a schematic diagram of the three-dimensional structure of the adapter liner of the present invention; Figure 9 For the present invention Figure 8 The enlarged structural diagram at B in the middle; Figure 10 This is a schematic diagram of the installation structure of the separator lining of the present invention.

[0022] In the figure: 1. Transformer body; 2. SMD pins; 3. Adaptation frame; 4. Adaptation lining; 5. Lead winding; 6. Positioning pressure plate; 7. Separation lining; 8. Adaptation slide; 9. Guide slider; 10. Push-flip rod; 11. Guide slide; 12. Main positioning slide; 13. Return spring; 14. Positioning slide; 15. Auxiliary positioning slide; 16. Resistance spring; 17. Traction cable; 18. Bidirectional threaded rod. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0024] See also Figures 1-10 , the present invention provides the following technical solutions: Example 1: In order to solve the problems existing in the actual use of existing chip electronic transformers, this embodiment discloses the following technical solutions: a chip electronic transformer, comprising a transformer body 1, and chip pins 2 fixedly installed on the left and right sides of the rear of the transformer body 1; an adaptation mechanism is provided inside the transformer body 1, and the adaptation mechanism includes an adaptation skeleton 3, and an adaptation lining 4 is slidingly provided at equal angles on the outside of the adaptation skeleton 3, and a lead winding 5 is wound around the outside of the adaptation lining 4; the adaptation skeleton 3 included in the adaptation mechanism is fixedly installed at the inner center position of the transformer body 1, and the outside of the adaptation skeleton 3 is provided with adaptation grooves 8 at equal angles, and the adaptation grooves 8 are used to install the adaptation lining 4, so that the adaptation lining 4 can be slid inside the transformer body 1 to adjust the installation requirements of different lead windings 5.

[0025] The adaptation mechanism includes a bidirectional threaded rod 18, and the bidirectional threaded rod 18 is rotatably installed at the internal center position of the adaptation frame 3 through a bearing, and the upper and lower outer walls of the bidirectional threaded rod 18 are threadedly connected to the guide sliders 9, and the outer walls of the symmetrically arranged guide sliders 9 are hingedly connected to the inner ends of the push-turn rods 10 at equal angles; the adaptation mechanism includes a guide slide 11, and the guide slide 11 is fixedly installed at the inner center position of the adaptation lining 4 arranged at equal angles, and the upper and lower sides of the inner wall of the adaptation lining 4 are hingedly connected to the outer ends of the push-turn rod 10, so that after the push-turn rod 10 rotates, it contacts the hinged guide slide 11 and the adaptation lining 4 to move.

[0026] The adapting mechanism includes an adapting lining 4 which is distributed in a V-shaped structure and slides to fit the four corners of the outside of the adapting frame 3. The sliding of the adapting lining 4 changes the installation of the lead winding 5 according to different specifications and requirements.

[0027] like Figure 5-Figure 8 As shown, the transformer body 1 is installed and fixed to the adaptation frame 3, and the adaptation frame 3 is positioned to the guide slide 11 and the adaptation lining 4 through the adaptation slide 8 opened inside, so that the guide slide 11 and the adaptation lining 4 in the initial state are close to the outer wall of the adaptation frame 3, reaching the minimum specifications for the lead winding 5 to be installed.

[0028] Furthermore, when it is necessary to adjust the winding specifications, the bidirectional threaded rod 18 installed inside the adaptation skeleton 3 is manually rotated, and the guide slider 9 threadedly connected to the bidirectional threaded rod 18 is limited by the push-turn rod 10, so that the rotating bidirectional threaded rod 18 drives the threaded guide slider 9 to slide inward synchronously, and the guide slider 9 drives the push-turn rod 10 hinged on the outer wall to rotate, so that the push-turn rod 10 drives the guide slide 11 hinged on the outer end to slide outward synchronously, and the adaptation lining 4 is limited by the adaptation groove 8 on the outside of the adaptation skeleton 3 for the sliding adaptation lining 4 to avoid its displacement and misalignment. At the same time, the outer diameter of the adaptation skeleton 3 is changed by the outward sliding adaptation lining 4, so that the lead winding 5 is wound around the outer wall of the adaptation lining 4 set at equal angles, thereby improving the range of winding adaptability.

[0029] Example 2: In order to solve the problems existing in the actual use of transformers of existing patch electronics, this embodiment discloses the following technical solutions: a positioning mechanism is provided on the outside of the adapter liner 4, and the positioning mechanism includes a positioning pressure plate 6, and the positioning mechanism includes a separating liner 7, and the lead winding 5 is separated and positioned by the separating liner 7; the positioning pressure plate 6 included in the positioning mechanism is equidistantly slidably arranged on the outside of the adapter liner 4, and the upper and lower sides of the inner ends of the equidistantly arranged positioning pressure plates 6 are fixedly connected to the outer ends of the main positioning slides 12, and the inner ends of the symmetrically arranged main positioning slides 12 slide through the guide slide 11 connected to the inner side of the adapter liner 4, and the symmetrically arranged main positioning slides 12 and the guide slides 11 are connected to each other through the reset spring 13.

[0030] The positioning mechanism includes a positioning slot 14, and the positioning slot 14 is equidistantly opened inside the adapter liner 4, and the separation linings 7 included in the positioning mechanism are slidably installed on the upper and lower sides of the symmetrically opened positioning slot 14, and the separation linings 7 are installed in groups of two, and the separation linings 7 and the positioning pressure plate 6 are staggered. The positioning mechanism includes a secondary positioning slide 15, and the inner end of the secondary positioning slide 15 is fixedly connected to the inner center position of the separation lining 7, and the inner end of the secondary positioning slide 15 slides through the guide slide 11 arranged on the inner side of the adapter liner 4, and the symmetrically arranged secondary positioning slide 15 and the guide slide 11 are connected to each other by a resistance spring 16.

[0031] The positioning mechanism includes a traction cable 17, and the outer end of the traction cable 17 is fixedly connected to the inner end of the main positioning slide 12, and after the middle part of the traction cable 17 is wrapped around the guide slide 11, its inner end is fixedly connected to the inner end of the auxiliary positioning slide 15, and the positioning pressure plate 6 in the initial state is away from the outer wall of the adapter liner 4, so as to drive the partition lining 7 to be accommodated in the positioning slide groove 14 opened inside the adapter liner 4; the positioning pressure plate 6 included in the positioning mechanism is distributed in a "V" shape, and the positioning pressure plate 6 is driven to slide inward by the winding of the lead winding 5, so that the positioning pressure plate 6 drives the corresponding partition lining 7 to slide outward, and then positions each group of installed lead windings 5 ​​to avoid looseness and slippage.

[0032] like Figures 8-10 As shown, during the winding process, the lead winding 5 contacts the positioning pressure plate 6 on the outside of the adapter lining 4 through the lead winding 5, and after winding, the positioning pressure plate 6 is squeezed to slide toward the outer wall of the adapter lining 4. At the same time, the moving positioning pressure plate 6 drives the main positioning slide 12 on the inside to stretch the reset spring 13, and drives the traction steel cable 17 fixed at the inner end to relax, so that the traction steel cable 17 no longer limits the auxiliary positioning slide 15, so that the auxiliary positioning slide 15 and the separating lining 7 are driven to slide outward after the friction spring 16 is compressed, thereby separating and positioning each group of lead windings 5 ​​to avoid looseness and slipping.

[0033] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A chip electronic transformer, comprising a transformer body (1), and chip pins (2) fixedly mounted on the left and right sides of the rear of the transformer body (1); It is characterized in that Also includes: An adapting mechanism is provided inside the transformer body (1), and the adapting mechanism includes an adapting frame (3), and an adapting lining (4) is provided on the outside of the adapting frame (3) in an equiangular sliding manner, and a lead winding (5) is wound around the outside of the adapting lining (4); A positioning mechanism is provided on the outside of the adapter lining (4), and the positioning mechanism includes a positioning pressure plate (6), and the positioning mechanism includes a separating lining (7), and the lead winding (5) is separated and positioned by the separating lining (7).

2. A chip electronic transformer according to claim 1, characterized in that: The adapting mechanism includes an adapting frame (3) fixedly mounted at the inner center position of the transformer body (1), and an adapting slide groove (8) is provided at an equal angle on the outside of the adapting frame (3), and the adapting slide groove (8) is used to install the adapting lining (4), so that the adapting lining (4) is slid inside the transformer body (1) to adjust the installation requirements of different lead windings (5).

3. A chip electronic transformer according to claim 2, characterized in that: The adapting mechanism includes a bidirectional threaded rod (18), and the bidirectional threaded rod (18) is rotatably mounted at the inner center position of the adapting frame (3) through a bearing, and the upper and lower outer walls of the bidirectional threaded rod (18) are both threadedly connected to guide sliders (9), and the outer walls of the symmetrically arranged guide sliders (9) are hingedly connected to the inner ends of the push-turning rods (10) at equal angles.

4. The chip electronic transformer according to claim 3, characterized in that: The adapting mechanism includes a guide slide (11), and the guide slide (11) is fixedly installed at the inner center position of the adapting lining plate (4) arranged at equal angles, and the upper and lower sides of the inner wall of the adapting lining plate (4) are hingedly connected to the outer end of the push-turning rod (10), so that after the push-turning rod (10) rotates, it contacts the hinged guide slide (11) and the adapting lining plate (4) to move.

5. The chip electronic transformer according to claim 1, characterized in that: The positioning mechanism includes a positioning pressure plate (6) that is equidistantly slidably arranged on the outer side of the adapter lining (4), and the upper and lower sides of the inner ends of the equidistantly arranged positioning pressure plates (6) are fixedly connected to the outer ends of the main positioning slide bars (12), and the inner ends of the symmetrically arranged main positioning slide bars (12) slide through the guide slide bars (11) connected to the inner side of the adapter lining (4), and the symmetrically arranged main positioning slide bars (12) and the guide slide bars (11) are connected to each other through return springs (13).

6. The chip electronic transformer according to claim 1, characterized in that: The positioning mechanism includes a positioning slot (14), and the positioning slot (14) is opened at equal distances inside the adapter lining (4), and the separation lining (7) included in the positioning mechanism is slidably installed on the upper and lower sides of the symmetrically opened positioning slot (14), and the separation linings (7) are installed in a group of two, and the separation linings (7) and the positioning pressure plate (6) are staggered.

7. The chip electronic transformer according to claim 6, characterized in that: The positioning mechanism includes a secondary positioning slide (15), and the inner end of the secondary positioning slide (15) is fixedly connected to the inner center position of the separating lining (7), and the inner end of the secondary positioning slide (15) slides through the guide slide (11) arranged on the inner side of the adapter lining (4), and the symmetrically arranged secondary positioning slide (15) and the guide slide (11) are connected to each other through a resistance spring (16).

8. The chip electronic transformer according to claim 7, characterized in that: The positioning mechanism includes a traction cable (17), and the outer end of the traction cable (17) is fixedly connected to the inner end of the main positioning slide (12), and after the middle part of the traction cable (17) is wound around the guide slide (11), its inner end is fixedly connected to the inner end of the auxiliary positioning slide (15), and the positioning pressure plate (6) in the initial state is away from the outer wall of the adapter lining (4) so ​​as to drive the partition lining (7) to be accommodated in the positioning slide (14) opened inside the adapter lining (4).

9. The chip electronic transformer according to claim 1, characterized in that: The adapting mechanism includes an adapting lining (4) which is arranged in a V-shaped distribution structure, and the adapting lining (4) is slidably fitted to the four corners of the outer side of the adapting frame (3). The installation of the lead winding (5) under different specifications and requirements can be changed by sliding the adapting lining (4).

10. The chip electronic transformer according to claim 1, characterized in that: The positioning mechanism includes a positioning pressure plate (6) which is arranged in a "V"-shaped structure. The positioning pressure plate (6) is driven to slide inward by the winding of the lead winding (5), so that the positioning pressure plate (6) drives the corresponding separation lining (7) to slide outward, thereby positioning each group of installed lead windings (5) to avoid looseness or slippage.

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