Transformer

Abstract

The utility model provides a transformer. The transformer comprises a circuit board, an electronic element, a first transmission line and a second transmission line. The circuit board has a first end and a second end opposite to each other. The electronic component is arranged on the circuit board. The first transmission line is electrically connected between the first end of the circuit board and the input end of the transformer. The second transmission line is electrically connected between the second end of the circuit board and the other circuit board. The size of the first transmission line is larger than that of the second transmission line. The transformer is electrically connected with the two circuit boards in the space through the second transmission line, the overall circuit arrangement space can be effectively increased, product miniaturization is facilitated, the size of the first transmission line is larger than that of the second transmission line, currents with large strength can be borne, and circuit safety is improved.

Description

Technical Field

[0001] The utility model relates to a transformer, in particular to a transformer for increasing the circuit layout space. Background Art

[0002] With the increasingly thinner and lighter design of electronic consumer products, the requirement for miniaturization of their power supplies is also increasing. Due to the narrow internal space of the miniaturized power supply, only a circuit board with a smaller size can be used, resulting in an increasingly dense arrangement of electronic components, and even it is difficult to fully arrange all of them on the circuit board, which severely limits the circuit layout. Summary of the Utility Model

[0003] The utility model provides a transformer which can increase the circuit layout space.

[0004] According to an embodiment of the utility model, the transformer includes a circuit board, electronic components, a first transmission line and a second transmission line. The circuit board has opposite first and second ends. The electronic components are arranged on the circuit board. The first transmission line is electrically connected between the first end of the circuit board and the input end of the transformer. The second transmission line is electrically connected between the second end of the circuit board and another circuit board. The size of the first transmission line is larger than that of the second transmission line.

[0005] In an embodiment of the utility model, the transformer further includes a metal terminal. The metal terminal includes a first connection portion and a second connection portion. The first connection portion is connected to the circuit board, and the second connection portion is connected to the first transmission line or the second transmission line.

[0006] In an embodiment of the utility model, the first connection portion includes a hook portion. The hook portion is hooked to the slot of the circuit board.

[0007] In an embodiment of the utility model, the second connection portion includes an annular clamping portion. The annular clamping portion surrounds one end of the first transmission line or the second transmission line.

[0008] In an embodiment of the utility model, the metal terminal further includes a contact portion located between the first connection portion and the second connection portion. The size of the contact portion is smaller than that of the second connection portion. At least a part of the wire core of the first transmission line or the second transmission line contacts the inner side of the contact portion.

[0009] In an embodiment of the utility model, one end of the first transmission line or the second transmission line has a hook portion. The hook portion is hooked to the slot of the circuit board or another circuit.

[0010] In an embodiment of the utility model, the transformer further includes a metal terminal. The metal terminal is connected to one end of the second transmission line and is inserted into the slot of another circuit board.

[0011] In an embodiment according to the present utility model, the number of copper wires in the core of the second transmission line is less than that in the core of the first transmission line.

[0012] In an embodiment according to the present utility model, the transformer further includes a bushing. The bushing is sleeved on at least one end of the first transmission line and the second transmission line.

[0013] In an embodiment according to the present utility model, the transformer further includes an exterior part. The input end of the transformer is arranged on the exterior part.

[0014] Based on the above, in the transformer of the present utility model, the first transmission line is electrically connected between the first end of the circuit board and the input end of the transformer, and the second transmission line is electrically connected between the second end of the circuit board and another circuit board. By electrically connecting the two circuit boards through the second transmission line, the circuit layout can be expanded from a two-dimensional plane to a three-dimensional space. In the case of limited space of the transformer, the overall circuit layout space can be effectively increased, which is beneficial to the miniaturization of the product. In addition, the size of the first transmission line is larger than that of the second transmission line, which can carry a larger input current, improve the circuit safety, and after the current is converted to a weaker intensity, it is carried by the second transmission line with a smaller size, further reducing the cost.

[0015] To make the above features and advantages of the present utility model more obvious and understandable, the following specific embodiments are given and detailed descriptions are provided in conjunction with the accompanying drawings as follows. Description of the Drawings

[0016] Figure 1 is a partial schematic diagram inside the transformer of an embodiment of the present utility model;

[0017] Figure 2 is Figure 1 a partial schematic diagram before the assembly of the transformer;

[0018] Figure 3A is Figure 2 a partial enlarged side view of the transformer;

[0019] Figure 3B is Figure 2 a partial enlarged front view of the transformer.

[0020] Description of the Reference Numerals

[0021] 10: Transformer;

[0022] 100, 180: Circuit boards;

[0023] 110: Electronic components;

[0024] 120: First transmission line;

[0025] 122, 132: Cores;

[0026] 130: Second transmission line;

[0027] 140a, 140c: Metal terminals;

[0028] 141a: First connection part;

[0029] 142a: Second connection part;

[0030] 143a: Contact part;

[0031] 144a, 190: Hook parts;

[0032] 145a: Annular clamping part;

[0033] 160a, 160b, 160c: Sleeves;

[0034] 170: Appearance part;

[0035] 172: Input end;

[0036] E1: First end;

[0037] E2: Second end;

[0038] G: Groove;

[0039] S: Slot. Detailed implementation manner

[0040] Figure 1 is a partial schematic diagram inside the transformer of an embodiment of the present utility model. Figure 2 is Figure 1 a partial schematic diagram before the assembly of the transformer. Figure 3A is Figure 2 a partial enlarged side view of the transformer.

[0041] Figure 3B is Figure 2 a partial enlarged front view of the transformer. For clearly showing the components inside the transformer, Figure 1 a part of the outer shell of the Figure 1 and Figure 2 the sleeves in Figure 3A are shown in dashed lines, Figure 3B and the sleeves in Figure 2 are hidden. It should be noted that for convenient viewing,

[0042] Please refer to Figures 1 to 3BThe transformer 10 of this embodiment includes an appearance part 170, a circuit board 100, another circuit board 180, an electronic component 110, a first transmission line 120, and a second transmission line 130. The transformer 10 is a transformer for an electronic device such as a computer, but the application object of the transformer 10 is not limited thereto. The appearance part 170 is the shell of the transformer 10, and is provided with an input terminal 172. Current can be input into the transformer 10 through the input terminal 172, and then output from the transformer 10 to the electronic device.

[0043] The circuit board 100 has a first end E1 and a second end E2 opposite to each other. The circuit board 100 may be provided with an electronic component 110 such as a resistor or a gas discharge tube (GDT), but the type and quantity of the electronic component 110 are not limited thereto. The first transmission line 120 is electrically connected between the first end E1 of the circuit board 100 and the input end 172 to achieve the effect of system grounding. The second transmission line 130 is electrically connected between the second end E2 of the circuit board 100 and another circuit board 180 to increase the circuit layout space of the transformer 10.

[0044] In detail, generally, a miniaturized power supply needs to use a smaller circuit board due to the small internal space. However, the area of a small-sized circuit board is limited, and it is difficult to configure all electronic components on the circuit board, which invisibly limits the layout of the circuit. In contrast, the transformer 10 of this embodiment uses a bendable second transmission line 130 to electrically connect the circuit board 100 and another circuit board 180. The other circuit board 180 is, for example, a main circuit board and can be configured at any location within the internal space of the transformer 10. For example, the circuit board 100 can be parallel or perpendicular to the Z-axis direction (such as Figure 1 ) on another circuit board 180. Thus, the circuit layout can be expanded from the original two-dimensional plane of the other circuit board 180 to a freely selectable three-dimensional space (circuit board 100), and when the internal space of the transformer 10 is limited, the overall circuit layout space is effectively increased, which is conducive to product miniaturization.

[0045] The first transmission line 120 and the second transmission line 130 are composed differently. The number of copper cores used in the first transmission line 120 is more than that in the second transmission line 130, making the diameter D1 of the first transmission line 120 greater than the diameter D2 of the second transmission line 130. In this embodiment, the core 122 of the first transmission line 120 is composed of multiple copper wires, which are coated with polyethylene (PE) plastic, for example, and then covered with an outer wire sheath. The second transmission line 130 is, for example, a single-core wire, and the core 132 is composed of at least one copper wire, which is coated with ethylene tetrafluoroethylene (ETFE) film, for example, and then covered with an outer wire sheath. The outer wire sheath is, for example, PVC. Compared with the outer wire sheath of the second transmission line 130, the first transmission line 120 can further use a thicker outer wire sheath.

[0046] Accordingly, since the size of the first transmission line 120 is larger than that of the second transmission line 130, it can carry a high-voltage current with a greater intensity input from the input end 172. Moreover, since the first transmission line 120 is coated with different materials and thicknesses, its insulation ability is better, and it is suitable for passing through and being arranged at the position where high-voltage components are provided in the transformer to ensure the safety of the circuit. After the input current is converted into a current with a weaker intensity by the circuit board 100, the second end E2 of the circuit board 100 uses the second transmission line 130 with a smaller size to carry the current and transmit the current to another circuit board 180. Since the number of copper cores in the second transmission line 130 is smaller and the outer skin is thinner, it is suitable for bending and passing through the position where low-voltage components are provided.

[0047] In this embodiment, the transformer 10 further includes metal terminals 140a, 140c. Any one of the metal terminals 140a, 140c can be selected to be connected between the first transmission line 120 and the circuit board 100, between the circuit board 100 and the second transmission line 130, and / or between the second transmission line 130 and another circuit board 180, so that the first transmission line 120 and the second transmission line 130 are electrically connected to the circuit board 100 and another circuit board 180 through the metal terminals 140a, 140c respectively.

[0048] Please refer to Figure 3A and Figure 3B, the metal terminal 140a includes a first connection portion 141a, a second connection portion 142a, and a contact portion 143a. The first connection portion 141a is connected to the circuit board 100 or another circuit board 180, and the second connection portion 142a is connected to the first transmission line 120 or the second transmission line 130. Specifically, the first connection portion 141a includes a hook portion 144a, and the hook portion 144a is hooked to the slot G at the first end E1 or the second end E2 of the circuit board 100. The second connection portion 142a includes an annular clamping portion 145a, and the annular clamping portion 145a surrounds one end of the first transmission line 120 / second transmission line 130 close to the circuit board 100. The first connection portion 141a and the second connection portion 142a are connected by the contact portion 143a, and at least a part of the wire cores 122 / 132 of the first transmission line 120 / second transmission line 130 contacts the inner side of the contact portion 143a. Preferably, the size L3 of the contact portion 143a is smaller than the size L1 of the first connection portion 141a and the size L2 of the second connection portion 142a to more closely contact the wire cores 122 / 132.

[0049] In the above configuration, after the hook portion 144a of the metal terminal 140a is hooked to the circuit board 100 / another circuit board 180 and the first transmission line 120 / second transmission line 130 is passed through the metal terminal 140a, the hook portion 144a can be welded to the circuit board 100 / another circuit board 180 by, for example, fog tin plating to provide a good electrical connection, but the welding method is not limited thereto. Since the metal terminal 140a is hooked to the circuit board 100, it has the advantages of improving the connection stability and facilitating the welding operation. At the same time, the annular clamping portion 145a can also be bent inward to abut against the first transmission line 120 / second transmission line 130 to firmly clamp the first transmission line 120 / second transmission line 130 and prevent it from accidentally coming loose. In addition, the contact portion 143a can also be bent inward to abut against the wire cores 122 / 132 of the first transmission line 120 / second transmission line 130 to ensure stable contact between the contact portion 143a and the wire cores 122 / 132.

[0050] In this embodiment, the first transmission line 120 / second transmission line 130 and the circuit board 100 / another circuit board 180 may not be connected by the metal terminals 140a, 140c. Instead, a part of the wire cores 122 / 132 of the first transmission line 120 / second transmission line 130 can be bent to form a hook portion 190, which is hooked to the slot G of the circuit board 100 or the slot G of another circuit board 180, and then the hook portion 190 is welded to the circuit board 100 / another circuit board 180 to complete the electrical connection between the transmission line and the circuit board.

[0051] Please go back to Figure 1, in this embodiment, the metal terminal 140c can be connected, for example, between the second transmission line 130 and another circuit board 180, and can be inserted into the slot S of this circuit board 180. Thereby, the second transmission line 130 can be electrically connected to another circuit board 180 well through the metal terminal 140c.

[0052] In addition, the transformer 10 further includes bushings 160a, 160b, 160c. The materials of the bushings 160a, 160b, 160c are, for example, polyethylene plastics and can be sleeved on the ends of the first transmission line 120 and the second transmission line 130. For example, the bushing 160a can be sleeved on one end of the first transmission line 120 close to the input end 172, the bushing 160b can be sleeved on one end of the first transmission line 120 and the second transmission line 130 close to the circuit board 100 and cover the circuit board 100, and the bushing 160c can be sleeved on one end of the second transmission line 130 close to the metal terminal 140c. Of course, the number and configuration of the bushings 160a, 160b, 160c are not limited thereto. Since the bushing 160a has an insulating effect, it can prevent the ends of the first transmission line 120 and the second transmission line 130 from accidentally touching other components inside the transformer 10 and affecting the quality of the electrical connection, and ensure circuit safety.

[0053] In summary, in the transformer of the present utility model, the first transmission line is electrically connected between the first end of the circuit board and the input end of the transformer, and the second transmission line is electrically connected between the second end of the circuit board and another circuit board. By electrically connecting the two circuit boards through the second transmission line, the circuit layout can be expanded from a two-dimensional plane to a three-dimensional space. In the case of limited space of the transformer, the overall circuit layout space can be effectively increased, which is beneficial to the miniaturization of the product.

[0054] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A transformer, characterized in that, Comprising: A circuit board having opposite first and second ends; An electronic component disposed on the circuit board, A first transmission line electrically connected between the first end of the circuit board and the input end of the transformer; And A second transmission line electrically connected between the second end of the circuit board and another circuit board, wherein the size of the first transmission line is larger than the size of the second transmission line.

2. The transformer according to claim 1, wherein It further includes a metal terminal, the metal terminal includes a first connection portion and a second connection portion, the first connection portion connects to the circuit board, and the second connection portion connects to the first transmission line or the second transmission line.

3. The transformer according to claim 2, characterized in that, The first connection portion includes a hook portion that hooks into a slot of the circuit board.

4. The transformer according to claim 2, characterized in that, The second connection portion includes an annular clamping portion that surrounds one end of the first transmission line or the second transmission line.

5. The transformer according to claim 2, characterized in that, The metal terminal further includes a contact portion located between the first connection portion and the second connection portion, the size of the contact portion is smaller than the size of the second connection portion, and at least a part of the wire core of the first transmission line or the second transmission line contacts the inner side of the contact portion.

6. The transformer according to claim 1, characterized in that, One end of the first transmission line or the second transmission line has a hook portion that hooks into a slot of the circuit board or the other circuit board.

7. The transformer according to claim 1, characterized in that, It further includes a metal terminal, the metal terminal is connected to one end of the second transmission line and is inserted into a slot of the other circuit board.

8. The transformer according to claim 1, wherein, The number of copper wires in the wire core of the second transmission line is less than the number of copper wires in the wire core of the first transmission line.

9. The transformer according to claim 1, wherein, It further includes a sleeve that sleevingly covers one end of at least one of the first transmission line and the second transmission line.

10. The transformer according to claim 1, characterized in that, It further includes an appearance part, and the input end of the transformer is disposed on the appearance part.

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