Widened transformer

Abstract

The utility model relates to the technical field of transformers, and discloses a widened transformer which comprises a winding body, a protective shell is fixedly installed on the outer side of the winding body, two connecting end pieces are arranged at the bottom of the protective shell, each connecting end piece comprises a bottom plate and a contact seat, the bottom plate is fixedly installed on one side of the bottom of the winding body, and the contact seats are fixedly installed at the bottom of the bottom plate. A plurality of guide pins are movably installed in the contact seat, and three first contact grooves are formed in the bottom of the bottom plate. The two connecting end pieces are arranged at the bottom of the winding body, each connecting end piece is composed of the bottom plate, the contact seat, the connecting column, the guide pin and the like, the contact piece is arranged at the top of the guide pin, and therefore the guide pin can be rapidly disassembled and assembled, the bottom of the connecting column is electrically connected with the contact piece at the top of the guide pin, and the electrical contact area of the guide pin and the connecting column can be guaranteed. And the bottom plate and the contact seat are in positioning connection through the positioning columns and the fixing screws, so that the maintenance convenience of the whole connecting end piece is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, and particularly relates to a widened transformer. Background Art

[0002] A micro-transformer is a small transformer with a specific design, mainly used in application scenarios that require high power density, high efficiency, and low leakage inductance, and has the characteristics of small volume, light weight, low cost, good heat dissipation, etc.;

[0003] For example, the Chinese utility model patent disclosed with the publication number CN218384779U: A PCB planar transformer. This application includes a planar transformer body, the planar transformer body includes a base, PCB multi-layer boards are fixed on both sides of the base, a conical seat is fixed on the PCB multi-layer board, an electrode post is installed at the bottom of the conical seat, a connecting post is fixed at the top of the conical seat, an electrode ring is installed between the connecting post and the conical seat, and a wire is fixed on the electrode ring. Therefore, through the setting of the above structure, when in use, the electrode ring connects the wire to the conical seat, and the insulating plate presses the electrode ring on the conical seat, which can quickly separate and disassemble the electrode ring from the conical seat for use during maintenance. And later, when separating the adjusting mechanism from the connecting plate at the bottom of the movable frame, the quick disassembly of the movable frame can be realized. After disassembly, the internal coil is exposed, which is convenient for later replacement and maintenance. However, in this application, the electrode post is electrically connected to the coil through the electrode ring and the wire. Due to the small volume and compact structure of the PCB transformer, the connection space between the coil and the electrode ring, wire, and electrode post is limited. An electrode ring is installed at one end of the wire, and the electrode ring is inserted and installed outside the electrode post, resulting in a small contact area between the electrode ring and the electrode post, thereby reducing the performance of the PCB transformer. In addition, due to the overall small structure of the PCB transformer, the attached connecting post and insulating plate structures will be even finer. Therefore, when inserting and installing the electrode ring, the insulating plate needs to be lifted, which makes the disassembly and assembly process of the electrode ring very inconvenient. At the same time, since the electrode post is exposed and electrically connected to the circuit board, when the transformer is in an overloaded working state for a long time, the electrode post and its connection part will bear too much current and heat, and if there is looseness or poor contact in the connection, it will also cause local overheating, resulting in material fatigue, melting, or even fracture of the electrode post. At this time, it is more difficult to replace the electrode post. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a widened transformer, which can effectively solve the problems in the background art.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A widened transformer, comprising a winding body, a protective shell is fixedly installed outside the winding body, two connection end pieces are arranged at the bottom of the protective shell, the connection end piece includes a bottom plate and a contact seat, the bottom plate is fixedly installed on one side of the bottom of the winding body, the contact seat is fixedly installed at the bottom of the bottom plate, and a plurality of lead pins are movably installed in the contact seat.

[0007] As a further preferred solution of the present utility model, three first contact grooves are opened at the bottom of the bottom plate, a connection column is fixedly installed in the first contact groove, and the top of the connection column passes through the bottom plate and extends above the bottom plate and is electrically connected to the corresponding output end of the winding body;

[0008] Based on this, through the setting of the fixed connection column at the bottom of the connection end piece, the lead pin can be electrically connected to the winding body through the contact seat and the connection column, and convenient maintenance can be realized.

[0009] As a further preferred solution of the present utility model, positioning columns are fixedly installed on both sides of the bottom of the bottom plate, and screw grooves are opened in the positioning columns.

[0010] As a further preferred solution of the present utility model, two bases are fixedly installed at the bottom of the contact seat, three partition grooves are opened at the bottom of the contact seat between the two bases, a second contact groove is also opened at the top of the contact seat directly above the partition groove, and jacks are opened in the contact seat between the partition groove and the second contact groove;

[0011] Based on this, through the setting of the second contact groove and the jack, the quick disassembly and assembly of the lead pin can be realized.

[0012] As a further preferred solution of the present utility model, sunken holes with a communicating type are opened in the contact seat and the base, positioning grooves are also opened on both sides of the top of the base, and the positioning grooves communicate with the corresponding sunken hole cavities. Based on this, with the opening of the positioning grooves and in cooperation with the positioning columns at the bottom of the bottom plate, the quick positioning installation of the contact seat at the bottom of the bottom plate can be realized.

[0013] As a further preferred solution of the present utility model, the top of the lead pin passes through the jack and extends into the second contact groove and is fixedly installed with a contact piece. A washer is inserted and installed on the lead pin between the inner bottom of the second contact groove and the contact piece, and a compression spring is also sleeved on the lead pin between the washer and the inner bottom of the second contact groove.

[0014] As a further preferred solution of the present utility model, the contact seat is inserted and installed at the bottom of the bottom plate through two positioning grooves, that is, the positioning column is inserted and installed in the corresponding positioning groove, and a fixing screw is inserted and installed in the sunken hole. The top of the fixing screw is threadedly connected in the screw groove, and the contact piece is inserted and installed in the corresponding first contact groove with the support force of the washer and is electrically connected to the connection column;

[0015] Based on this, by using a split contact seat to achieve the quick disassembly and assembly of the contact piece and the pin, the quick maintenance of the contact piece and the pin can be realized. At the same time, with the support force of the washer, the contact piece can be closely attached to the connection column, thereby maintaining the stability of the electrical connection.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] A widened transformer according to the utility model is provided with two connection end pieces at the bottom of the winding body. The connection end piece is composed of components such as a bottom plate, a contact seat, a connection column, and a pin. A contact piece is arranged at the top of the pin, so as to facilitate the quick disassembly and assembly of the pin. Moreover, the bottom of the connection column is electrically connected to the contact piece at the top of the pin, which can ensure the electrical contact area between the pin and the connection column and guarantee the stable operation of the entire transformer. The bottom plate and the contact seat are also positioned and connected through positioning columns and fixing screws, realizing the convenience of maintaining the entire connection end piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 is a schematic diagram of the split main structure of the utility model;

[0020] Figure 3 is a cross-sectional view of the bottom plate and the contact seat of the utility model;

[0021] Figure 4 is Figure 3 an enlarged view of part A in

[0022] Figure 5 is a cross-sectional view of the contact seat of the utility model.

[0023] In the figure: 1, winding body; 2, protective shell; 3, connection end piece; 4, bottom plate; 5, contact seat; 6, first contact groove; 7, connection column; 8, positioning column; 9, screw groove; 10, base; 11, counterbore; 12, positioning groove; 13, fixing screw; 14, separation groove; 15, second contact groove; 16, jack; 17, contact piece; 18, washer; 19, compression spring; 20, pin. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] In order to make the technical means, creative features, achieved purposes, and effects of the utility model easy to understand, the utility model will be further described below in conjunction with specific embodiments.

[0025] As Figures 1-5As shown in the figure, a widened transformer provided by the utility model includes a winding body 1. A protective shell 2 is fixedly installed on the outside of the winding body 1. Two connecting end pieces 3 are arranged at the bottom of the protective shell 2. The connecting end piece 3 includes a bottom plate 4 and a contact seat 5. The bottom plate 4 is fixedly installed on one side of the bottom of the winding body 1. The contact seat 5 is fixedly installed at the bottom of the bottom plate 4. A plurality of lead pins 20 are movably installed in the contact seat 5.

[0026] As Figures 3-5 shown, three first contact grooves 6 are opened at the bottom of the bottom plate 4. A connecting column 7 is fixedly installed in the first contact groove 6, and the top of the connecting column 7 passes through the bottom plate 4 and extends above the bottom plate 4 and is electrically connected to the corresponding output end of the winding body 1. Based on this, through the setting of the fixed connecting column 7 at the bottom of the connecting end piece 3, the lead pin 20 can be electrically connected to the winding body 1 through the contact seat 5 and the connecting column 7, and convenient maintenance can be realized. Positioning columns 8 are fixedly installed on both sides of the bottom of the bottom plate 4. A screw groove 9 is opened in the positioning column 8;

[0027] As Figures 3-4 shown, two bases 10 are fixedly installed at the bottom of the contact seat 5. Three separation grooves 14 are opened at the bottom of the contact seat 5 between the two bases 10. A second contact groove 15 is also opened at the top of the contact seat 5 directly above the separation groove 14. An insertion hole 16 is opened in the contact seat 5 between the separation groove 14 and the second contact groove 15. Based on this, through the setting of the second contact groove 15 and the insertion hole 16, the quick disassembly and assembly of the lead pin 20 can be realized. A communicating counterbore 11 is opened in the contact seat 5 and the base 10. Positioning grooves 12 are also opened on both sides of the top of the base 10, and the positioning grooves 12 communicate with the corresponding counterbore 11 cavities. Based on this, with the opening of the positioning groove 12 and in cooperation with the positioning column 8 at the bottom of the bottom plate 4, the quick positioning installation of the contact seat 5 at the bottom of the bottom plate 4 can be realized. The top of the lead pin 20 passes through the insertion hole 16 and extends into the second contact groove 15 and is fixedly installed with a contact piece 17. A washer 18 is inserted and installed on the lead pin 20 between the bottom of the second contact groove 15 and the contact piece 17. A compression spring 19 is also sleeved on the lead pin 20 between the washer 18 and the bottom of the second contact groove 15. The contact seat 5 is inserted and installed at the bottom of the bottom plate 4 through two positioning grooves 12, that is, the positioning column 8 is inserted and installed in the corresponding positioning groove 12, and a fixing screw 13 is inserted and installed in the counterbore 11. The top of the fixing screw 13 is threadedly connected in the screw groove 9, and the contact piece 17 is inserted and installed in the corresponding first contact groove 6 with the support of the washer 18 and is electrically connected to the connecting column 7. Based on this, through the split contact seat 5, the quick disassembly and assembly of the contact piece 17 and the lead pin 20 can be realized, that is, the quick maintenance of the contact piece 17 and the lead pin 20 can be realized. At the same time, the contact piece 17 can be closely attached to the connecting column 7 with the support of the washer 18, so as to maintain the stability of the electrical connection.

[0028] It should be noted that the present utility model is a widened transformer. When installing the lead pin 20, the washer 18 and the compression spring 19 can be inserted and installed outside the lead pin 20 first. Then, holding the contact piece 17, the bottom of the lead pin 20 is inserted and installed in the jack 16 through the second contact groove 15, and the bottom of the lead pin 20 extends to the position below the contact seat 5 through the partition groove 14, so that the compression spring 19 cooperates with the second contact groove 15 and the washer 18 to support the contact piece 17, and the washer 18 plays an insulating role between the compression spring 19. Then, the remaining two lead pins 20 are installed in the same way as above. Subsequently, the contact seat 5 is placed at the bottom of the bottom plate 4, and the two positioning grooves 12 at the top of the contact seat 5 are respectively inserted and installed on the connecting columns 7. Then, the fixing screw 13 passes through the counterbore 11 from the bottom of the base 10 and is threadedly connected in the screw groove 9, so that the contact seat 5 can be fixedly installed at the bottom of the bottom plate 4. At the same time, by means of the reaction force of the compression of the washer 18, the washer 18 is inserted and installed in the first contact groove 6, and the top of the contact piece 17 is closely attached to the bottom of the connecting column 7, so as to ensure the stability of the electrical connection between the contact piece 17 and the connecting column 7. Subsequently, the bottom of the lead pin 20 can be installed on the circuit board by soldering. In the later stage, when the lead pin 20 is damaged during disassembly and assembly, only the contact seat 5 needs to be removed from the bottom of the bottom plate 4 and a new lead pin 20 can be replaced.

[0029] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A widening transformer, characterized in that: The invention comprises a winding body (1), a protective shell (2) is fixedly mounted on the outside of the winding body (1), two connecting end pieces (3) are arranged at the bottom of the protective shell (2), the connecting end pieces (3) comprise a bottom plate (4) and a contact seat (5), the bottom plate (4) is fixedly mounted on one side of the bottom of the winding body (1), the contact seat (5) is fixedly mounted on the bottom of the bottom plate (4), and a plurality of lead pins (20) are movably mounted in the contact seat (5).

2. A widening transformer according to claim 1, characterized in that: The bottom of the base plate (4) is provided with three first contact grooves (6), and a connecting column (7) is fixedly installed in the first contact groove (6), and the top of the connecting column (7) passes through the base plate (4) and extends to a position above the base plate (4) and is electrically connected to the corresponding output end of the winding body (1).

3. A widening transformer according to claim 2, characterized in that: Positioning columns (8) are fixedly mounted on both sides of the bottom of the base plate (4), and screw grooves (9) are provided in the positioning columns (8).

4. A widening transformer according to claim 3, characterized in that: Two bases (10) are fixedly mounted on the bottom of the contact seat (5); three separation grooves (14) are provided on the bottom of the contact seat (5) located between the two bases (10); a second contact groove (15) is also provided on the top of the contact seat (5) located directly above the separation grooves (14); and a socket (16) is provided on the contact seat (5) located between the separation grooves (14) and the second contact grooves (15).

5. A widening transformer according to claim 4, characterized in that: The contact seat (5) and the base (10) are provided with a communicating countersunk hole (11), and both sides of the top of the base (10) are provided with positioning grooves (12), and the positioning grooves (12) are communicated with the corresponding countersunk hole (11) cavity.

6. A widening transformer according to claim 5, characterized in that: The top of the lead pin (20) passes through the insertion hole (16) and extends into the second contact groove (15) and is fixedly mounted with a contact sheet (17); the lead pin (20) located between the bottom of the second contact groove (15) and the contact sheet (17) is interspersed with a gasket (18); the lead pin (20) located between the gasket (18) and the bottom of the second contact groove (15) is also fitted with a compression spring (19).

7. A widening transformer according to claim 6, characterized in that: The contact seat (5) is installed through two positioning grooves (12) at the bottom of the base plate (4), that is, the positioning column (8) is installed through the corresponding positioning groove (12), and a fixing screw (13) is installed through the countersunk hole (11), and the top of the fixing screw (13) is threadedly connected in the screw groove (9), and the contact piece (17) is installed through the corresponding first contact groove (6) with the support force of the washer (18) and is electrically connected to the connecting column (7).

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