Compact small-sized isolation power supply

Abstract

The utility model provides a compact type small isolation power supply. The compact type small isolation power supply comprises an isolation packaging bottom plate and a PCB arranged on the upper portion of the isolation packaging bottom plate. An isolation transformer unit is arranged on the PCB, the isolation packaging bottom plate further comprises a protection cover plate covering the upper portion of the PCB, and square connecting grooves are formed in the four diagonal positions of the isolation packaging bottom plate; an extrusion spring and a lantern ring piece connected with one end of the extrusion spring are arranged in a groove body of the connecting groove; the lantern ring piece is of a circular ring body structure and further comprises a limiting rod which is integrally formed and arranged on one side of a groove body of the connecting groove. The sleeve ring piece is movably connected with the limiting rod, one end of the limiting rod can penetrate through the sleeve ring piece, in the actual application process, connection of the protective cover and the bottom plate can be well achieved, the problems that a traditional structure is complex in connection mode and not beneficial to maintenance are solved, and the connecting structure is more convenient and faster to use.

Description

Technical Field

[0001] The utility model relates to the technical field of isolated power supply devices, in particular to a compact small isolated power supply with reasonable structural design and outstanding application effect. Background Art

[0002] Isolated power supplies are used for the power ground wires between two systems. Isolation is carried out in some laboratories or high - requirement occasions. For the safety of experimental personnel, generally, the input power supply of the experiment is isolated from the mains by a 1:1 power frequency transformer. In this way, no matter which wire of the circuit the laboratory experimenter touches, there will be no risk of electric shock because the isolated power supply is not connected to the ground. The isolation transformer can be installed as an electrical component on a printed circuit board, also known as a PCB - mounted transformer. To avoid direct exposure of the circuit board to the outside and cause damage, it is usually encapsulated. However, the existing packaging structures have problems such as too large volume, structural layout not conducive to heat dissipation, and relatively cumbersome maintenance structures, which are not conducive to the popularization and application of products.

[0003] For example, the utility model patent with the application number CN202321687921.0 and the patent name "Packaging Structure for Isolated Power Supply" specifically discloses a packaging structure for an isolated power supply. It includes an isolated power supply packaging bottom plate. The bottom of the inner cavity of the isolated power supply packaging bottom plate is provided with a PCB board, and an isolation transformer is arranged on the top of the PCB board. The top of the isolated power supply packaging bottom plate is slidably connected with a packaging shell. Both sides of the bottom of the packaging shell are fixedly connected with fixing strips, and rectangular grooves adapted to the fixing strips are respectively opened on both sides of the top of the isolated power supply packaging bottom plate. T - shaped blocks are respectively slidably connected to the front side and the rear side of the isolated power supply packaging bottom plate. Through the combined use of the isolated power supply packaging bottom plate and the packaging shell, the PCB board is prevented from being directly exposed to the outside. Through the combined use of the T - shaped blocks and the clamping grooves, the limit of the packaging shell on the top of the isolated power supply packaging bottom plate can be released, and the purpose of easily opening the packaging shell of the isolated power supply without the aid of auxiliary tools and facilitating the maintenance of its internal parts can be achieved.

[0004] Although the above - mentioned existing - technology structural design realizes the effect of convenient disassembly and maintenance to a certain extent, the overall structure is relatively complex, the heat dissipation performance is poor, and further structural improvement and improvement are needed. Content of the Utility Model

[0005] The problems of the existing technology solved by this application are as follows:

[0006] The existing packaging structures have problems such as too large volume, structural layout not conducive to heat dissipation, and relatively cumbersome maintenance structures, which are not conducive to the popularization and application of products.

[0007] The solution of the present utility model to solve the technical problem is as follows:

[0008] Provide a compact small isolated power supply, including an isolated encapsulation bottom plate and a PCB circuit board arranged on the upper part of the isolated encapsulation bottom plate; an isolation transformer unit is arranged on the PCB circuit board.

[0009] It further includes a protection cover plate covering the upper part of the PCB circuit board.

[0010] Square connection grooves are opened at the four diagonal parts of the isolated encapsulation bottom plate; an extrusion spring and a collar part connected to one end of the extrusion spring are arranged inside the groove body of the connection groove; the collar part is in a circular ring body structure.

[0011] It further includes a limiting rod integrally formed on one side of the groove body of the connection groove; the collar part is movably connected to the limiting rod, and one end of the limiting rod can penetrate through the collar part.

[0012] The outer diameter size of the collar part matches the width of the groove body of the connection groove, so that the collar part can move left and right stably in the connection groove.

[0013] Cover plate connection rings are integrally formed at the four diagonal parts on the lower side of the protection cover plate; the cover plate connection rings push the collar part to move towards the extrusion spring side, and then are sleeved on the limiting rod, and the protection cover plate and the isolated encapsulation bottom plate are movably connected under the extrusion of the extrusion spring.

[0014] Long strip-shaped heat dissipation windows are respectively opened on the sides of the protection cover plate.

[0015] Preferably, linear limiting grooves are opened on the left and right sides of the groove body of the connection groove; limiting blocks protrude outwards from both sides of the collar part.

[0016] The limiting blocks are embedded in the limiting grooves.

[0017] The technical effects produced by the present application in solving the technical problem are as follows:

[0018] Compared with the prior art, a compact small isolated power supply of the present utility model includes an isolated encapsulation bottom plate and a PCB circuit board disposed on the upper part of the isolated encapsulation bottom plate. An isolation transformer unit is provided on the PCB circuit board. It further includes a protection cover plate covering the upper part of the PCB circuit board. Square connection grooves are formed at four diagonal positions of the isolated encapsulation bottom plate. An extrusion spring and a collar member connected to one end of the extrusion spring are provided inside the groove body of the connection groove. The collar member has a toroidal structure. It further includes a limiting rod integrally formed on one side of the groove body of the connection groove. The collar member is movably connected to the limiting rod. One end of the limiting rod can penetrate through the collar member. The outer diameter dimension of the collar member matches the width of the groove body of the connection groove, so that the collar member can stably move left and right in the connection groove. Cover plate connection rings are integrally formed at four diagonal positions on the lower side of the protection cover plate. The cover plate connection rings push the collar member to move towards the extrusion spring side and then sleeved on the limiting rod. Under the extrusion of the extrusion spring, the protection cover plate is movably connected to the isolated encapsulation bottom plate. Long strip-shaped heat dissipation windows are respectively formed on the sides of the protection cover plate. In the actual application process, the connection between the protection cover and the bottom plate can be better realized, improving the problems of complex connection mode and inconvenient maintenance in the traditional structure. The connection structure of this application is more convenient and fast to use. [Description of the Drawings]

[0019] Figure 1 is a three-dimensional state structure schematic diagram of a compact small isolated power supply of the present utility model.

[0020] Figure 2 is an exploded state structure schematic diagram of a compact small isolated power supply of the present utility model.

[0021] Figure 3 is Figure 2 an enlarged schematic diagram of part A in [Detailed Embodiments]

[0022] To make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0023] Please refer to Figures 1 to 3 , a compact small isolated power supply 1 of the present utility model includes an isolated encapsulation bottom plate 11 and a PCB circuit board 13 disposed on the upper part of the isolated encapsulation bottom plate 11. An isolation transformer unit 14 is provided on the PCB circuit board 13.

[0024] It further includes a protection cover plate 12 covering the upper part of the PCB circuit board 13;

[0025] Square connecting grooves 111 are formed at the four diagonal positions of the isolation encapsulation bottom plate 11; an extrusion spring 151 and a collar member 15 connected to one end of the extrusion spring 151 are arranged inside the groove body of the connecting groove 111; the collar member 15 has a circular ring body structure;

[0026] It further includes a limiting rod integrally formed on one side of the groove body of the connecting groove 111; the collar member 15 is movably connected to the limiting rod, and one end of the limiting rod can penetrate through the collar member 15;

[0027] The outer diameter size of the collar member 15 matches the groove width of the connecting groove 111, so that the collar member 15 can stably move left and right in the connecting groove 111;

[0028] Cover plate connecting rings 122 are integrally formed at the four diagonal positions on the lower side of the protection cover plate 12; the cover plate connecting rings 122 push the collar member 15 to move towards the side of the extrusion spring 151, and then sleeved on the limiting rod, and the protection cover plate 12 is movably connected to the isolation encapsulation bottom plate 11 under the extrusion of the extrusion spring 151;

[0029] Long strip-shaped heat dissipation windows 121 are respectively formed on the side edges of the protection cover plate 12.

[0030] In this application, an isolation encapsulation bottom plate 11 and a PCB circuit board 13 disposed above the isolation encapsulation bottom plate 11 are provided simultaneously; an isolation transformer unit 14 is provided on the PCB circuit board 13, and a protection cover plate 12 covering the upper part of the PCB circuit board 13 is further included. Square connection grooves 111 are formed at four diagonal positions of the isolation encapsulation bottom plate 11; an extrusion spring 151 and a collar 15 connected to one end of the extrusion spring 151 are provided inside the groove body of the connection groove 111. The collar 15 has a circular ring structure, and a limiting rod integrally formed on one side of the groove body of the connection groove 111 is further included; the collar 15 is movably connected to the limiting rod, and one end of the limiting rod can penetrate through the collar 15. The outer diameter of the collar 15 matches the width of the groove body of the connection groove 111, so that the collar 15 can stably move left and right in the connection groove 111. Cover plate connection rings 122 are integrally formed at four diagonal positions on the lower side of the protection cover plate 12; the cover plate connection rings 122 push the collar 15 to move towards the extrusion spring 151 side and then sleeved on the limiting rod, and the protection cover plate 12 is movably connected to the isolation encapsulation bottom plate 11 under the extrusion of the extrusion spring 151. Long strip-shaped heat dissipation windows 121 are respectively formed on the sides of the protection cover plate 12. In the actual application process, the connection between the protection cover and the bottom plate can be better realized, and the problems of complex connection mode and inconvenient maintenance in the traditional structure are improved. The connection structure of this application is more convenient and fast to use.

[0031] Further, linear limiting grooves are formed on the left and right sides of the groove body of the connection groove 111; limiting blocks protrude outward from both sides of the collar 15;

[0032] The limiting blocks are embedded in the limiting grooves.

[0033] The technical effects produced by this application in solving technical problems are as follows:

[0034] Compared with the prior art, a compact small isolated power supply 1 of the present utility model is provided with an isolated encapsulation bottom plate 11 and a PCB circuit board 13 disposed on the upper part of the isolated encapsulation bottom plate 11; an isolation transformer unit 14 is provided on the PCB circuit board 13, and further includes a protection cover plate 12 covering the upper part of the PCB circuit board 13. Square connection grooves 111 are formed at the four diagonal positions of the isolated encapsulation bottom plate 11; an extrusion spring 151 and a collar 15 connected to one end of the extrusion spring 151 are disposed inside the groove body of the connection groove 111. The collar 15 has a circular ring structure, and further includes a limiting rod integrally formed on one side of the groove body of the connection groove 111; the collar 15 is movably connected to the limiting rod, and one end of the limiting rod can penetrate through the collar 15. The outer diameter of the collar 15 matches the width of the groove body of the connection groove 111, so that the collar 15 can stably move left and right in the connection groove 111. Cover plate connection rings 122 are integrally formed at the four diagonal positions on the lower side of the protection cover plate 12; the cover plate connection rings 122 push the collar 15 to move towards the extrusion spring 151 side and then sleeved on the limiting rod, and the protection cover plate 12 is movably connected to the isolated encapsulation bottom plate 11 under the extrusion of the extrusion spring 151. Long strip-shaped heat dissipation windows 121 are respectively formed on the sides of the protection cover plate 12. In the actual application process, the connection between the protection cover and the bottom plate can be better realized, and the problems of complex connection mode and inconvenient maintenance of the traditional structure are improved. The connection structure of this application is more convenient and fast.

[0035] The above-described embodiments of the present utility model do not limit the protection scope of the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. A compact small isolated power supply, comprising an isolation package base plate and a PCB circuit board arranged on the upper part of the isolation package base plate; an isolation transformer unit is arranged on the PCB circuit board, characterized in that: It also includes a protective cover plate arranged on the upper part of the PCB circuit board; The four diagonal parts of the isolation packaging bottom plate are provided with square connection grooves; a compression spring and a collar connected to one end of the compression spring are arranged inside the groove body of the connection groove; the collar is in a circular ring structure; It also includes a limiting rod integrally formed and arranged on one side of the groove body of the connecting groove; The collar is movably connected to the limiting rod, and one end of the limiting rod can pass through the collar; The outer diameter of the collar part matches the width of the connecting groove, so that the collar part can stably move left and right in the connecting groove; The four diagonal parts of the lower side of the protective cover are respectively integrally formed with cover connecting rings; the cover connecting ring pushes the sleeve ring to move toward the side of the extrusion spring, and then is sleeved on the limit rod, so that the protective cover is movably connected with the isolation packaging bottom plate under the extrusion of the extrusion spring; The sides of the protection cover plate are respectively provided with long strip-shaped heat dissipation windows.

2. A compact small isolated power supply as claimed in claim 1, characterized in that: The left and right sides of the connecting groove are provided with linear limiting grooves; the two sides of the collar member are provided with limiting blocks protruding outwards; The limiting block is embedded in the limiting groove.

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