A mounting structure for a transformer

Abstract

The utility model relates to transformer installation technical field, especially a kind of installation structure of transformer, including circuit board, bottom shell and transformer;Circuit board is equipped with transformer placing opening, and the edge of circuit board is provided with incoming line electric connection position and outgoing line electric connection position in transformer placing opening, and the edge of the installation slot of bottom shell is provided with enclosing wall corresponding transformer placing opening;Circuit board is installed in the installation slot of bottom shell, and the bottom of transformer passes through transformer placing opening downwards, enclosing wall passes through transformer placing opening upwards, and the incoming line electrode and outgoing line electrode of transformer are electrically connected with incoming line electric connection position and outgoing line electric connection position respectively, and enclosing wall encloses transformer;The problem that the overall height of circuit board and switch power supply box height cannot be matched due to the installation mode of transformer is solved.

Description

Technical Field

[0001] This utility model relates to the field of transformer installation technology, and in particular to a transformer installation structure. Background Technology

[0002] The current shape of switching power supply boxes is usually designed according to the application scenario (such as which products or parts they are installed in) or the specifications of the switching power supply (such as the power of the switching power supply). Based on the priority of application scenario and switching power supply specifications, the height of the switching power supply box is limited in advance. At the same time, the switching power supply is also limited by the specifications to use a transformer of the corresponding specification. The height of the transformer of this specification is also limited within a certain range. This will cause the transformer to be placed and installed on the top surface of the circuit board in the conventional way, which will cause the overall height of the circuit board (or the overall height + the reserved installation height) to exceed the limited height of the switching power supply box, making it impossible to install the circuit board inside the switching power supply box.

[0003] It should be noted that the overall height of the circuit board is usually determined by the height of the transformer, because the tallest component on the circuit board is usually the transformer. Other components can have their height issues addressed in various ways, such as by replacing them with surface-mount devices. However, due to specification limitations, the height of the transformer is difficult to change (even between different manufacturers, the height difference is not significant). Utility Model Content

[0004] To address the aforementioned shortcomings, the purpose of this utility model is to propose a transformer mounting structure that solves the problem of mismatch between the overall height of the circuit board and the height of the switching power supply box caused by the transformer mounting method.

[0005] To achieve this objective, the present invention adopts the following technical solution: A transformer mounting structure includes a circuit board, a base shell, and a transformer; the circuit board has a transformer placement opening, and the circuit board has an inlet electrical connection position and an outlet electrical connection position on the edge of the transformer placement opening; the mounting groove of the base shell has a enclosure wall corresponding to the edge of the transformer placement opening. The circuit board is installed in the mounting slot of the bottom shell. The bottom of the transformer passes downward through the transformer placement opening. The enclosure wall passes upward through the transformer placement opening. The input electrode and output electrode of the transformer are electrically connected to the input electrical connection position and the output electrical connection position, respectively. The enclosure wall encloses the transformer.

[0006] Furthermore, the transformer has an input insulation extension block extending along the input electrode on the input side. The input insulation extension block and the input electrode are respectively arranged in a one-to-one correspondence. The input insulation extension block is used to extend the distance between the input electrode and the transformer. The transformer has an outgoing insulation extension block extending along the outgoing electrode on the outgoing side. The outgoing insulation extension block and the outgoing electrode are arranged in a one-to-one correspondence. The outgoing insulation extension block is used to extend the distance between the outgoing electrode and the transformer.

[0007] Furthermore, the incoming electrical connection position and the outgoing electrical connection position are respectively located at the rear end and the front end of the transformer placement opening, and the incoming electrode and the outgoing electrode are located at the rear end and the front end of the transformer.

[0008] Furthermore, the enclosure wall includes a first enclosure block and a second enclosure block; the left side of the leftmost outgoing line insulation extension block and the right side of the rightmost outgoing line insulation extension block are respectively left with passage gaps between them and the left and right sides of the transformer placement opening. The first and second enclosure blocks pass upward through the passage gap, respectively, to enclose the left side of the leftmost outgoing insulation extension block and the right side of the rightmost outgoing insulation extension block.

[0009] Furthermore, both the input electrode and the output electrode are made of rigid conductive material.

[0010] Furthermore, the winding input line of the transformer extends along the bottom surface of the input line insulation extension block to the input line electrode and is electrically connected to the input line electrode; The winding lead of the transformer extends along the bottom surface of the lead insulation extension block to the lead electrode and is electrically connected to the lead electrode.

[0011] Furthermore, the incoming electrical connection position is an incoming welding hole that corresponds one-to-one with the incoming electrode, and the incoming electrode passes through the incoming welding hole from top to bottom; The outgoing electrical connection position is an outgoing welding hole that corresponds one-to-one with the outgoing electrode, and the outgoing electrode passes through the outgoing welding hole from top to bottom.

[0012] The technical solution provided by this utility model can include the following beneficial effects: After the circuit board is installed in the mounting slot of the bottom shell, there is usually a certain space between the bottom surface of the circuit board and the bottom of the mounting slot of the bottom shell. Therefore, a transformer placement opening is made in the circuit board so that the bottom of the transformer can be placed in the space, thereby improving the space utilization rate and reducing the occupation of the transformer height on the longitudinal space of the switching power supply box, so that both the circuit board and the transformer can be installed normally in the switching power supply box.

[0013] When the bottom of the transformer extends downward through the transformer placement opening and is at the same level as the circuit board, there is a risk of insufficient creepage distance and insufficient insulation. To address this, an upward-protruding enclosure wall is added to the mounting groove of the bottom shell to extend upward through the transformer placement opening and enclose the area around the transformer, thereby extending the creepage distance and enhancing insulation protection. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the installation structure of a transformer according to one embodiment of the present invention. Figure 1 .

[0015] Figure 2 Is it like this? Figure 1 The diagram shows a schematic of a transformer installation structure. Figure 2 .

[0016] Figure 3 Is it like this? Figure 1 The back of the circuit board shown.

[0017] The components include: circuit board 1, bottom shell 2, transformer 3, transformer placement opening 11, incoming line electrical connection position 12, outgoing line electrical connection position 13, enclosure wall 21, incoming line electrode 31, outgoing line electrode 32, incoming line insulation extension block 311, outgoing line insulation extension block 321, first enclosure block 211, second enclosure block 212, incoming line welding hole 121, and outgoing line welding hole 131. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, features defined with "first" and "second" may explicitly or implicitly include one or more of these features, used to distinguish and describe features, without any order or emphasis.

[0020] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0021] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model according to the specific circumstances.

[0022] The following is combined with Figures 1 to 3 This describes an installation structure for a transformer according to an embodiment of the present invention.

[0023] A transformer mounting structure includes a circuit board 1, a base shell 2, and a transformer 3; the circuit board 1 has a transformer placement opening 11, and the circuit board 1 has an inlet electrical connection position 12 and an outlet electrical connection position 13 on the edge of the transformer placement opening 11; the mounting groove of the base shell 2 has a enclosure wall 21 corresponding to the edge of the transformer placement opening 11. The circuit board 1 is installed in the mounting slot of the bottom shell 2. The bottom of the transformer 3 passes downward through the transformer placement opening 11, and the enclosure wall 21 passes upward through the transformer placement opening 11. The input electrode 31 and output electrode 32 of the transformer 3 are electrically connected to the input electrical connection position 12 and the output electrical connection position 13, respectively. The enclosure wall 21 encloses the transformer 3.

[0024] In a preferred embodiment of the transformer installation structure proposed in this utility model, such as... Figure 1 and 2 As shown, after the circuit board 1 is installed in the mounting slot of the bottom shell 2, there is usually a certain space between the bottom surface of the circuit board 1 and the bottom of the mounting slot of the bottom shell 2. Therefore, a transformer placement opening 11 is made in the circuit board 1 so that the bottom of the transformer 3 can be placed in this space, thereby improving the space utilization rate and reducing the occupation of the vertical space of the switching power supply box by the height of the transformer 3, so that both the circuit board 1 and the transformer 3 can be installed normally in the switching power supply box.

[0025] When the bottom of transformer 3 passes downward through transformer placement opening 11 and is at the same level as circuit board 1, there is a risk of insufficient creepage distance and insufficient insulation. To address this, an upward-protruding enclosure wall 21 is added to the mounting groove of the bottom shell 2 to pass upward through the transformer placement opening 11 and enclose the area around transformer 3, thereby extending the creepage distance and enhancing insulation protection.

[0026] Furthermore, an inlet insulation extension block 311 is provided on the inlet side of the transformer 3 along the inlet electrode 31. The inlet insulation extension block 311 and the inlet electrode 31 are provided in a one-to-one correspondence. The inlet insulation extension block 311 is used to extend the distance between the inlet electrode 31 and the transformer 3. A lead wire insulation extension block 321 is provided on the lead wire side of transformer 3 along the lead wire electrode 32. The lead wire insulation extension block 321 and the lead wire electrode 32 are provided in a one-to-one correspondence. The lead wire insulation extension block 321 is used to extend the distance between the lead wire electrode 32 and transformer 3.

[0027] In this embodiment, as Figure 3 As shown, in order to further optimize the creepage distance and insulation protection, the incoming electrode 31 and the outgoing electrode 32 are respectively provided with an incoming insulation extension block 311 and an outgoing insulation extension block 321, which are used to extend the distance between the electrical connection point of the transformer 3 and the circuit board 1 and the transformer 3.

[0028] Furthermore, the incoming electrical connection position 12 and the outgoing electrical connection position 13 are respectively located at the rear end and the front end of the transformer placement opening 11, and the incoming electrode 31 and the outgoing electrode 32 are located at the rear end and the front end of the transformer 3.

[0029] In this embodiment, the incoming electrical connection position 12 and the outgoing electrical connection position 13 are respectively disposed at the rear end and the front end of the transformer placement opening 11, and the incoming electrode 31 and the outgoing electrode 32 are respectively disposed at the rear end and the front end of the transformer 3. Thus, after the electrodes and the electrical connection positions are electrically connected, the transformer 3 can be stably suspended in the transformer placement opening 11, so that after the circuit board 1 is installed in the mounting groove of the bottom shell 2, it can remain stable regardless of whether the bottom surface of the transformer 3 can contact the bottom of the mounting groove of the bottom shell 2.

[0030] Furthermore, the enclosure wall 21 includes a first enclosure block 211 and a second enclosure block 212; the left side of the leftmost outgoing line insulation extension block 321 and the right side of the rightmost outgoing line insulation extension block 321 are respectively left with passage gaps between them and the left and right sides of the transformer placement opening 11. The first enclosure block 211 and the second enclosure block 212 pass upward through the passage gap respectively, enclosing the left side of the leftmost outgoing line insulation extension block 321 and the right side of the rightmost outgoing line insulation extension block 321.

[0031] In this embodiment, similar to a switching power supply circuit, the creepage distance of the primary and secondary windings of the transformer 3 is usually not in compliance with safety regulations because components are connected across the input and output terminals of the transformer 3. Therefore, it is preferable to provide a first shielding block 211 and a second shielding block 212 on the output side of the transformer 3. By partially shielding both sides of the output insulation extension block 321, the creepage distance can be extended, making the structure of the shielding wall 21 simpler.

[0032] Furthermore, both the inlet electrode 31 and the outlet electrode 32 are made of rigid conductive material.

[0033] In this embodiment, the transformer 3 is suspended by electrically connecting the input electrode 31 and the output electrode 32 to the input electrical connection position 12 and the output electrical connection position 13, respectively. The input electrode 31 and the output electrode 32 are preferably made of rigid conductive materials (such as metal composite materials) to provide sufficient support.

[0034] Furthermore, the winding input line of transformer 3 extends along the bottom surface of the input line insulation extension block 311 to the input line electrode 31 and is electrically connected to the input line electrode 31. The winding lead of transformer 3 extends along the bottom surface of lead insulation extension block 321 to lead electrode 32 and is electrically connected to lead electrode 32.

[0035] In this embodiment, when the winding of transformer 3 is connected to the electrode, the incoming and outgoing wires of the winding preferably extend to the electrode on the bottom surface of the incoming wire insulation extension block 311 and the outgoing wire insulation extension block 321, which can effectively keep them away from nearby conductive parts.

[0036] Furthermore, the incoming electrical connection position 12 is an incoming welding hole 121 that corresponds one-to-one with the incoming electrode 31, and the incoming electrode 31 passes through the incoming welding hole 121 from top to bottom; The outgoing electrical connection position 13 is an outgoing welding hole 131 that corresponds one-to-one with the outgoing electrode 32. The outgoing electrode 32 passes through the outgoing welding hole 131 from top to bottom.

[0037] In this embodiment, the transformer 3 is supported entirely by the connection between the electrodes and the electrical connection points. Preferably, the electrodes pass through the welding holes from above and are then welded to achieve the electrical connection. This allows the circuit board 1 to support the transformer 3, making it less likely for the welding points to separate.

[0038] Other components and operations of the installation structure of a transformer according to an embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0039] In this specification, the terms "embodiment," "example," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A transformer mounting structure, characterized in that: It includes a circuit board, a base shell, and a transformer; the circuit board has an opening for placing the transformer, and the circuit board has an inlet electrical connection position and an outlet electrical connection position on the edge of the transformer placement opening; the mounting groove of the base shell has a protective wall corresponding to the edge of the transformer placement opening. The circuit board is installed in the mounting slot of the bottom shell. The bottom of the transformer passes downward through the transformer placement opening. The enclosure wall passes upward through the transformer placement opening. The input electrode and output electrode of the transformer are electrically connected to the input electrical connection position and the output electrical connection position, respectively. The enclosure wall encloses the transformer.

2. The installation structure of a transformer according to claim 1, characterized in that: The transformer has an inlet insulation extension block extending along the inlet electrode on the inlet side. The inlet insulation extension block and the inlet electrode are arranged in a one-to-one correspondence. The inlet insulation extension block is used to extend the distance between the inlet electrode and the transformer. The transformer has an outgoing insulation extension block extending along the outgoing electrode on the outgoing side. The outgoing insulation extension block and the outgoing electrode are arranged in a one-to-one correspondence. The outgoing insulation extension block is used to extend the distance between the outgoing electrode and the transformer.

3. The installation structure of a transformer according to claim 2, characterized in that: The incoming electrical connection and the outgoing electrical connection are respectively located at the rear end and the front end of the transformer placement opening, and the incoming electrode and the outgoing electrode are located at the rear end and the front end of the transformer.

4. The transformer mounting structure according to claim 3, characterized in that: The enclosure wall includes a first enclosure block and a second enclosure block; there are passage gaps between the left side of the leftmost outgoing line insulation extension block and the right side of the rightmost outgoing line insulation extension block and the left and right sides of the transformer placement opening, respectively. The first and second enclosure blocks pass upward through the passage gap, respectively, to enclose the left side of the leftmost outgoing insulation extension block and the right side of the rightmost outgoing insulation extension block.

5. The installation structure of a transformer according to claim 1, characterized in that: Both the input electrode and the output electrode are made of rigid conductive material.

6. The installation structure of a transformer according to claim 2, characterized in that: The winding input line of the transformer extends along the bottom surface of the input line insulation extension block to the input line electrode and is electrically connected to the input line electrode; The winding lead of the transformer extends along the bottom surface of the lead insulation extension block to the lead electrode and is electrically connected to the lead electrode.

7. The installation structure of a transformer according to claim 1, characterized in that: The incoming electrical connection position is an incoming welding hole that corresponds one-to-one with the incoming electrode, and the incoming electrode passes through the incoming welding hole from top to bottom; The outgoing electrical connection position is an outgoing welding hole that corresponds one-to-one with the outgoing electrode, and the outgoing electrode passes through the outgoing welding hole from top to bottom.

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