Single-wire-wrapped transformer

Abstract

The utility model discloses a single-wire coil transformer, which relates to the field of transformer equipment, and comprises an iron core, a connecting hole is transversely formed in the iron core, a screw rod is arranged in the connecting hole in a penetrating manner, the end part of the screw rod, which is positioned outside the iron core, is connected with a clamping plate through a nut, and the clamping plate is used for tightly clamping the iron core in the transverse direction; a mounting seat is arranged on the iron core, a plurality of groups of terminal blocks are detachably arranged on the mounting seat, a connecting hole is formed in each group of terminal block, the connecting holes are electrically connected with coils wound on the iron core, and the adjacent connecting holes are connected through short-circuit pieces. According to the utility model, the input terminal blocks are rearranged, and the adjacent second connecting holes and third connecting holes, or the first connecting holes and the second connecting holes, and the third connecting holes and fourth connecting holes are connected through the short-circuit pieces, so that series connection or parallel connection can be realized; and the risk of cross connection of the connecting pieces is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer equipment, in particular to a single-wire transformer. Background Art

[0002] The voltage ranges vary greatly in different countries. For example, the main single-phase voltage in my country is 220V / 50Hz, and the main single-phase voltage in Japan is 110V / 60Hz. A 50Hz design transformer can cover the direct application of a 60Hz design transformer, but the voltage and current need to be converted. Conventional single-coil transformers achieve the purpose of changing the input rated voltage and current by changing the series / parallel connection on the input side. Usually, connecting one place can achieve the effect of series connection. Connecting two places can achieve the effect of parallel connection. At this time, the input is half the voltage of the series connection, the current carrying capacity is twice that of the series connection, and the total power capacity remains unchanged. When connected in parallel, the short-circuit needs to be crossed, and can only be short-circuited with a soft connection. The insulation strength at the intersection needs to be considered to prevent the risk of short circuit. In addition, the lengths of the short-circuit used in series and parallel are different. Two accessories need to be provided for customers to choose from, and customers are also prone to use them incorrectly. Utility Model Content

[0003] The purpose of the utility model is to provide a single-coil transformer to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A single-wire transformer comprises an iron core, wherein the iron core is provided with a connecting hole in the transverse direction, a screw is passed through the connecting hole, a clamping plate is connected to the end of the screw outside the iron core through a nut, and is used to tightly clamp the iron core in the transverse direction, a mounting seat is provided on the iron core, and a plurality of groups of terminal blocks are detachably provided on the mounting seat, each group of the terminal blocks is provided with a connecting hole, the connecting hole is electrically connected to a coil wound on the iron core, and adjacent connecting holes are connected by a short-circuit piece to realize series connection or parallel connection.

[0006] Preferably, the coil comprises a first coil, a second coil and a third coil which are sequentially wound on an iron core, the first coil is a secondary coil, and the second coil and the third coil constitute a primary coil.

[0007] Preferably, the terminal block is provided with one or two groups of connection holes.

[0008] Preferably, the terminal block includes a first terminal block and a second terminal block arranged in parallel on the mounting base, the first terminal block is provided with a first connecting hole and a second connecting hole, the second terminal block is provided with a third connecting hole and a fourth connecting hole, the first connecting hole is electrically connected to the same-name end of the second coil, the second connecting hole is electrically connected to the same-name end of the third coil, the third connecting hole is electrically connected to the opposite-name end of the second coil, the fourth connecting hole is electrically connected to the opposite-name end of the third coil, the second connecting hole and the third connecting hole are connected through a short-circuit to achieve series connection, or the first connecting hole and the second connecting hole are connected through a short-circuit, and the third connecting hole and the fourth connecting hole are connected through a short-circuit to achieve parallel connection.

[0009] Preferably, a connecting plate is provided on the mounting seat, and a slot is formed between the connecting plate and the mounting seat, and the terminal block is plugged into the slot via a plug-in plate on the back side.

[0010] Preferably, the clamping plate includes a vertical portion, and two groups of the vertical portions are tightly clamped on the front and rear sides of the iron core through screws and nuts. The lower end of the vertical portion is integrally provided with a supporting portion perpendicular thereto, and the supporting portion constitutes a supporting base for the entire device.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model can realize series connection or parallel connection by rearranging the input terminal block and connecting the adjacent second connection hole and the third connection hole, or the first connection hole and the second connection hole, and the third connection hole and the fourth connection hole through a short-circuit piece. Since the improved connection holes are in adjacent positions, the risk of cross-connection of the connection pieces is effectively avoided. At the same time, the distance between adjacent connection holes is short, which saves wiring materials and optimizes material costs. Moreover, a short-circuit special for short-circuiting is used between two adjacent connection holes, which further improves safety and convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 for Figure 1 A schematic diagram of the structure of the middle A area;

[0015] Figure 3 for Figure 1 A magnified schematic diagram of the structure of the middle B area;

[0016] Figure 4 It is a top view of the utility model (in parallel);

[0017] Figure 5 This is a parallel circuit diagram of the utility model;

[0018] Figure 6It is a top view of the utility model (in series);

[0019] Figure 7 It is a circuit diagram of the utility model in series;

[0020] In the figure: 1 iron core, 2 screw rod, 3 clamping plate, 4 vertical part, 5 support part, 6 coil, 7 mounting seat, 8 connecting plate, 9 slot, 10 first terminal block, 11 second terminal block, 12 first connecting hole, 13 second connecting hole, 14 third connecting hole, 15 fourth connecting hole, 16 short-circuit piece. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-7 , the utility model provides a technical solution:

[0023] A single-wire transformer comprises an iron core 1, wherein the iron core 1 is provided with a connecting hole in the horizontal direction, a screw rod 2 is passed through the connecting hole, a clamping plate 3 is connected to the end of the screw rod 2 located outside the iron core 1 through a nut, and is used to tightly clamp the iron core 1 in the horizontal direction, the clamping plate 3 comprises a vertical portion 4, two groups of vertical portions 4 are tightly clamped on the front and rear sides of the iron core 1 through the screw rod 2 and the nut, and a supporting portion 5 perpendicular thereto is integrally provided at the lower end of the vertical portion 4, and the supporting portion 5 constitutes a supporting base of the entire device. In the technical scheme of the embodiment, a total of four groups of screw rods 2 are provided, which are respectively located at the four corners of the iron core 1; a mounting seat 7 is symmetrically provided on the iron core 1, and a plurality of groups of end portions are detachably provided on the mounting seat 7. Sub-stations, each group of terminal stations is provided with connection holes, the connection holes are one group or two groups, the connection holes are electrically connected to the coils 6 wound on the iron core 1, the coils 6 include a first coil, a second coil, and a third coil wound on the iron core 1 in sequence, the first coil is a secondary coil, the second coil and the third coil constitute a primary coil, and adjacent connection holes are connected by short-circuit pieces 16 to achieve series or parallel connection; a connector is provided in the connection hole, the lower end of the connector is electrically connected to each coil 6, and when the short-circuit piece 16 is inserted into the connection hole, the upper end of the connector is connected, thereby realizing the short circuit between each coil 6, thereby achieving the technical effect of series or parallel connection;

[0024] The terminal block includes a first terminal block 10 and a second terminal block 11 which are arranged in parallel on the mounting base 7. The specific number of the terminal blocks can be set according to the actual application. The first terminal block 10 is provided with a first connection hole 12 and a second connection hole 13, and the second terminal block 11 is provided with a third connection hole 14 and a fourth connection hole 15. In the technology of this embodiment, each terminal block corresponds to two groups of connection holes. At the same time, it can also be set that each group of terminal blocks corresponds to a group of connection holes, and then the number of terminal blocks can be set to four groups; the first connection hole 12 is electrically connected to the same-name end of the second coil, the second connection hole 13 is electrically connected to the same-name end of the third coil, the third connection hole 14 is electrically connected to the opposite-name end of the second coil, and the fourth connection hole 15 is electrically connected to the opposite-name end of the third coil. At the same time, the second connection hole 13 is connected to the third connection hole 14 through a short-circuit 16 to achieve series connection, or the first connection hole 12 is connected to the second connection hole 13 through a short-circuit, and the third connection hole 14 is connected to the fourth connection hole 15 through a short-circuit 16 to achieve parallel connection.

[0025] In order to facilitate the terminal block to be detachably plugged into the mounting seat 7, a connecting plate 8 is provided on the mounting seat 7, and a slot 9 is formed between the connecting plate 8 and the mounting seat 7, and the terminal block is plugged into the slot 9 through the plug-in plate on the back;

[0026] It can be seen from the above structural description that by rearranging the terminal block at the input end, connecting the adjacent second connection hole 13 and the third connection hole 14, or connecting the first connection hole 12 and the second connection hole 13, and the third connection hole 14 and the fourth connection hole 15 through the short-circuit 16, series connection or parallel connection can be achieved. Since the improved connection holes are in adjacent positions, the risk of cross-connection of the short-circuit 16 is effectively avoided; at the same time, the distance between adjacent connection holes is shorter, which saves wiring materials and optimizes material costs; and, a short-circuit-only short-circuit 16 is used between two adjacent connection holes to further improve safety and convenience.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A single-coil transformer, characterized in that: The invention comprises an iron core (1), wherein the iron core (1) is provided with a connecting hole in the transverse direction, wherein a screw rod (2) is inserted into the connecting hole, and the end of the screw rod (2) located outside the iron core (1) is connected to a clamping plate (3) through a nut, and is used to tightly clamp the iron core (1) in the transverse direction, and the iron core (1) is provided with a mounting seat (7), and the mounting seat (7) is detachably provided with a plurality of groups of terminal blocks, each group of the terminal blocks is provided with a connecting hole, and the connecting hole is electrically connected to a coil (6) wound on the iron core (1), and adjacent connecting holes are connected by a short-circuit (16) to achieve series connection or parallel connection.

2. A single-wire transformer according to claim 1, characterized in that: The coil (6) comprises a first coil, a second coil and a third coil which are sequentially wound on the iron core (1), the first coil being a secondary coil, and the second coil and the third coil constituting a primary coil.

3. A single-wire transformer according to claim 2, characterized in that: The terminal block is provided with one or two groups of connection holes.

4. The single-wire transformer according to claim 3, characterized in that: The terminal block comprises a first terminal block (10) and a second terminal block (11) which are arranged in parallel on a mounting seat (7); the first terminal block (10) is provided with a first connection hole (12) and a second connection hole (13); the second terminal block (11) is provided with a third connection hole (14) and a fourth connection hole (15); the first connection hole (12) is electrically connected to the same-name end of the second coil, the second connection hole (13) is electrically connected to the same-name end of the third coil, the third connection hole (14) is electrically connected to the opposite-name end of the second coil, and the fourth connection hole (15) is electrically connected to the opposite-name end of the third coil; the second connection hole (13) and the third connection hole (14) are connected via a short-circuit (16) to achieve series connection, or the first connection hole (12) and the second connection hole (13) are connected via a short-circuit, and the third connection hole (14) and the fourth connection hole (15) are connected via a short-circuit (16) to achieve parallel connection.

5. A single-wire transformer according to any one of claims 1 to 4, characterized in that: The mounting seat (7) is provided with a connecting plate (8), and a slot (9) is formed between the connecting plate (8) and the mounting seat (7), and the terminal block is plugged into the slot (9) via a plug-in plate on the back.

6. The single-wire transformer according to claim 5, characterized in that: The clamping plate (3) comprises a vertical portion (4), two groups of the vertical portions (4) are tightly clamped on the front and rear sides of the iron core (1) through screws (2) and nuts, and a support portion (5) perpendicular thereto is integrally provided at the lower end of the vertical portion (4), and the support portion (5) constitutes a support base for the entire device.

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