Transformer with external fuse

Abstract

The utility model discloses a transformer with an external fuse, which relates to the technical field of transformers and comprises a coil, an iron core is mounted on the outer side of the coil in a penetrating manner, side clamping pieces are fixedly mounted on the front side and the rear side of the iron core respectively, an upper clamping piece is fixedly connected between the side clamping piece on the front side and the top of the iron core, and a wiring mechanism is fixedly mounted on the top of the upper clamping piece. The wiring mechanism comprises a plurality of output terminals and a plurality of input terminals, two contact blocks are movably mounted in each input terminal, a connecting block is movably mounted at the top of each input terminal, a protective tube is fixedly mounted between the two connecting blocks, the two output terminals are fixedly connected through a connecting seat, and the two input terminals are also fixedly connected through a connecting seat. Two contact blocks and a connecting block are installed in the input terminal in a penetrating mode, an input electric wire can be conveniently fixed through cooperation of screws, protection of equipment can be achieved through arrangement of the connecting block, a sleeve, a gasket, a side base and a protective tube, and meanwhile the external protective tube is matched with the structure so that maintenance and replacement can be conveniently carried out.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, and particularly relates to a transformer with an external fuse. Background Technique

[0002] A transformer is a key electrical device. It is mainly used to change the voltage of alternating current without changing the frequency of the current. Through the principle of electromagnetic induction, the transformer can increase or decrease the voltage to meet the voltage level requirements of different electrical devices.

[0003] It is usually composed of an iron core and coils wound around the iron core. Transformers are not only widely used in the power system, but also in many fields such as electronics, communication, and transportation. For example, the Chinese utility model patent with the publication number CN203038758U: a power transformer with a fuse. This application has a plurality of iron cores arranged in parallel. A square hole is opened in the center of the iron core. A winding group is arranged in the square hole. Skeletons are fixed on the upper surface and the lower surface of the winding group. Second clamping plates vertically arranged and first clamping plates horizontally arranged are provided on the front and rear sides of the iron core. The first clamping plate and the second clamping plate are fixedly connected through fasteners. A fuse is connected in series through an electric wire in the winding group. Therefore, this application can also protect the device through the internally arranged fuse. However, since the fuse in this application is arranged inside the winding group, when the fuse melts, when replacing the fuse, it is also necessary to disassemble the winding box and the iron core, making the replacement process of the fuse cumbersome. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a transformer with an external fuse, which can effectively solve the problems in the background technique.

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

[0006] A transformer with an external fuse includes a coil. An iron core is inserted and installed outside the coil. Side clamping pieces are fixedly installed on the front side and the rear side of the iron core respectively. An upper clamping piece is fixedly connected between the side clamping piece on the front side and the top of the iron core. A wiring mechanism is fixedly installed on the top of the upper clamping piece. The wiring mechanism includes a plurality of output terminals and a plurality of input terminals. Two contact blocks are movably installed in the input terminals. A connecting block is movably installed on the top of the input terminals. A fuse tube is fixedly installed between the two connecting blocks.

[0007] As a further preferred solution of the utility model, the two output terminals are fixedly connected through a connecting seat. The two input terminals are also fixedly connected through a connecting seat. And one of the output terminals and one of the input terminals are also fixedly connected through a connecting seat. The connecting seat is fixedly installed on the top of the upper clamping piece through screws.

[0008] As a further preferred embodiment of the present utility model, a limiting block is fixedly installed on one side of the inner top of the input terminal. Two first counterbores are also formed in the inner top of the input terminal, and a protective cover is fixedly installed on the top of the input terminal;

[0009] Based on this, by arranging the limiting block in the input terminal, the contact block can be inserted and installed in the input terminal and positioned.

[0010] As a further preferred embodiment of the present utility model, a wire hole is formed in the contact block, and a second counterbore is formed in the inner top of the wire hole. Two contact blocks are inserted and installed in the input terminal, and an insulating block is inserted and installed in the input terminal between the two contact blocks. The second counterbore is in communication with the corresponding first counterbore in the inner top of the input terminal;

[0011] Based on this, one end of the wire can be fixed through the cooperation of the contact block and the screw, and the insulating block can be used to prevent the two contact blocks from directly electrically contacting in the input terminal.

[0012] As a further preferred embodiment of the present utility model, a sleeve is fixedly installed at the bottom of the connection block. The sleeve is inserted and installed in the corresponding first counterbore and fixed by a screw, and the connection block is placed on the top of the input terminal.

[0013] As a further preferred embodiment of the present utility model, washers are arranged at both ends of the fuse tube. A side seat is fixedly installed on the outer side of the washer, and the two ends of the fuse tube are respectively fixedly installed on the corresponding side seats. The washer is fixedly installed on the connection block by a screw;

[0014] Based on this, through the arrangement of the connection block, the sleeve, the washer, the side seat and the fuse tube, the conduction of the circuit can be realized, and the fuse tube can be used to prevent the equipment from being damaged due to excessive input current. At the same time, it is also convenient to directly replace the fuse tube from the outside in the later stage.

[0015] Compared with the prior art, the present utility model has the following beneficial effects:

[0016] For a transformer with an external fuse described in the present utility model, two contact blocks and a connection block are inserted and installed in the input terminal. The cooperation with the screw facilitates the fixing of the input wire. Through the arrangement of the connection block, the sleeve, the washer, the side seat and the fuse tube, the protection of the equipment can be realized. At the same time, the external fuse tube is convenient for maintenance and replacement in cooperation with the above structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main structure of the present utility model;

[0018] Figure 2 It is a schematic diagram of the wiring mechanism structure of the present utility model;

[0019] Figure 3 Schematic diagram of the input terminal splitting structure of the present utility model;

[0020] Figure 4 Schematic diagram of the contact block and connection block structure of the present utility model;

[0021] Figure 5 Schematic diagram of the connection structure of the fuse tube, connection block and washer of the present utility model.

[0022] In the figure: 1, coil; 2, iron core; 3, side clip; 4, upper clip; 5, wiring mechanism; 6, output terminal; 7, input terminal; 8, contact block; 9, connection block; 10, fuse tube; 11, connection seat; 12, limit block; 13, first counterbore; 14, protective cover; 15, wire hole; 16, second counterbore; 17, insulating block; 18, sleeve; 19, washer; 20, side seat. Detailed implementation manners

[0023] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation manners.

[0024] As Figures 1 - 5 shown, a transformer with an external fuse provided by the present utility model includes a coil 1, an iron core 2 is inserted and installed on the outside of the coil 1, side clips 3 are fixedly installed on the front side and the rear side of the iron core 2 respectively, an upper clip 4 is fixedly connected between the front side side clip 3 and the top of the iron core 2, a wiring mechanism 5 is fixedly installed on the top of the upper clip 4, the wiring mechanism 5 includes a plurality of output terminals 6 and a plurality of input terminals 7, two contact blocks 8 are movably installed in the input terminal 7, a connection block 9 is movably installed on the top of the input terminal 7, and a fuse tube 10 is fixedly installed between the two connection blocks 9.

[0025] As Figures 3 - 4As shown, the two output terminals 6 are fixedly connected through a connecting seat 11, and the two input terminals 7 are also fixedly connected through the connecting seat 11. Moreover, one of the output terminals 6 and one of the input terminals 7 are also fixedly connected through the connecting seat 11. The connecting seat 11 is fixedly installed on the top of the upper clamping piece 4 by screws. A limiting block 12 is fixedly installed on one side of the inner top of the input terminal 7. Two first counterbores 13 are also formed in the inner top of the input terminal 7. A protective cover 14 is fixedly installed on the top of the input terminal 7. Based on this, by arranging the limiting block 12 in the input terminal 7, the contact block 8 can be inserted and positioned in the input terminal 7. A wire hole 15 is formed in the contact block 8, and a second counterbore 16 is formed in the inner top of the wire hole 15. Two contact blocks 8 are inserted into the input terminal 7, and an insulating block 17 is inserted between the two contact blocks 8 in the input terminal 7. Moreover, the second counterbore 16 is in communication with the corresponding first counterbore 13 in the inner top of the input terminal 7. Based on this, one end of the wire can be fixed through the cooperation of the contact block 8 and the screw, and the insulating block 17 can be used to prevent the two contact blocks 8 from directly making electrical contact in the input terminal 7;

[0026] As Figure 3 , Figure 5 shown, a sleeve 18 is fixedly installed at the bottom of the connecting block 9. The sleeve 18 is inserted into the corresponding first counterbore 13 and fixed by screws. The connecting block 9 is placed on the top of the input terminal 7. Washers 19 are provided at both ends of the fuse tube 10. A side seat 20 is fixedly installed on the outside of the washer 19. The two ends of the fuse tube 10 are respectively fixedly installed on the corresponding side seats 20. The washer 19 is fixedly installed on the connecting block 9 by screws. Based on this, through the arrangement of the connecting block 9, the sleeve 18, the washer 19, and the fuse tube 10, the conduction of the circuit can be realized, and the fuse tube 10 can be used to prevent the equipment from being damaged due to excessive input current. At the same time, it is also convenient to directly replace the fuse tube 10 from the outside later.

[0027] It should be noted that the present utility model is a transformer with an external fuse. When the fuse tube 10 melts and needs to be replaced with a new one, first insert one end of the wire into the wire hole 15 of the corresponding contact block 8. Then, place the two new washers 19 on the corresponding connecting blocks 9 respectively, and place the fuse tube 10 inside the protective cover 14. Then, sequentially pass the bottom of the fixing screw through the washer 19, the connecting block 9, and the sleeve 18 and thread it into the first counterbore 13. At the same time, the bottom of the fixing screw fixes the wire inserted in the wire hole 15. Thus, the end of the fixing screw fixes the connecting block 9 on the top of the input terminal 7 and fixes the washer 19 on the top of the connecting block 9, so as to connect and protect the input circuit through the fixing screw, the sleeve 18, the connecting block 9, the washer 19, the side seat 20, and the fuse tube 10.

[0028] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above-mentioned embodiments, and what is described in the above embodiments and the specification only illustrates the principles 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 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 transformer with external insurance, characterized in that: The invention comprises a coil (1), an iron core (2) is inserted and installed on the outer side of the coil (1), side clamps (3) are fixedly installed on the front and rear sides of the iron core (2), the front side side clamp (3) is fixedly connected to the top of the iron core (2) with an upper clamp (4), a wiring mechanism (5) is fixedly installed on the top of the upper clamp (4), the wiring mechanism (5) comprises a plurality of output terminals (6) and a plurality of input terminals (7), two contact blocks (8) are movably installed in the input terminal (7), a connecting block (9) is movably installed on the top of the input terminal (7), and a fuse (10) is fixedly installed between the two connecting blocks (9).

2. A transformer with external fuse according to claim 1, characterized in that: The two output terminals (6) are fixedly connected via a connection seat (11), the two input terminals (7) are also fixedly connected via a connection seat (11), and one of the output terminals (6) and one of the input terminals (7) are also fixedly connected via a connection seat (11), and the connection seat (11) is fixedly mounted on the top of the upper clamp (4) via screws.

3. A transformer with external fuse according to claim 1, characterized in that: A limit block (12) is fixedly mounted on one side of the top of the input terminal (7), two first countersunk holes (13) are also provided on the top of the input terminal (7), and a protective cover (14) is fixedly mounted on the top of the input terminal (7).

4. A transformer with external fuse according to claim 3, characterized in that: A wire hole (15) is provided in the contact block (8), a second countersunk hole (16) is provided at the top of the wire hole (15), two contact blocks (8) are inserted and installed in the input terminal (7), an insulating block (17) is inserted and installed in the input terminal (7) located between the two contact blocks (8), and the second countersunk hole (16) is connected to a channel of a first countersunk hole (13) corresponding to the top of the input terminal (7).

5. A transformer with external fuse according to claim 4, characterized in that: A sleeve (18) is fixedly mounted on the bottom of the connection block (9); the sleeve (18) is inserted into the corresponding first countersunk hole (13) and fixed by screws; and the connection block (9) is placed on top of the input terminal (7).

6. A transformer with external fuse according to claim 5, characterized in that: Washers (19) are provided at both ends of the fuse tube (10), side seats (20) are fixedly mounted on the outside of the washers (19), and both ends of the fuse tube (10) are respectively fixedly mounted on the corresponding side seats (20), and the washers (19) are fixedly mounted on the connecting block (9) by means of screws.

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