Power supply device

Abstract

The utility model discloses a power supply device contains insulating fixed combination structure, the casing, circuit board and lock fastening element, insulating fixed combination structure contains insulating body and metal material's first fixed sleeve and second fixed sleeve, and insulating fixed combination structure sets up between circuit board and casing, and metal material's lock fastening element crosses the mounting hole of circuit board, and locks fastening in the first fixed sleeve of insulating body, and the fixed portion of casing and the second fixed sleeve of insulating body lock fastening each other. Therefore, the power supply device of the case has the reliability of metal screw fixation, and has the insulating performance of plastic screw simultaneously, effectively reduces the safety distance required between electronic device and screw, improves the utilization of circuit board, and reduces the layout difficulty of electronic component.

Description

Technical Field

[0001] This case relates to a power supply device, and more particularly to a power supply device having an insulated fixed assembly structure. Background Technology

[0002] In power supply circuit systems, to ensure stability and reliability, stringent safety regulations are often imposed on the product during the design process. Under these regulations, simultaneously meeting electrical performance requirements and ensuring safe distances between electronic components and grounding points is a key focus and challenge in circuit system and printed circuit board design.

[0003] In printed circuit board (PCB) layout, metal screws are commonly used to secure the PCB to the housing. These screws serve as the conductive points between the PCB and external ground, thus acting as grounding points to ensure electrical safety. However, to maintain safe distances between electronic components and these screws, the components must typically be placed outside the screw area. This means that no electronic components can be placed around these screws, resulting in significant wasted board space.

[0004] To address the aforementioned issues, existing methods involve replacing the conductive metal screws with insulating plastic ones. However, because plastic is weaker than metal and cannot withstand large torques, the reliability of plastic screws is lower than that of metal screws, ultimately reducing the lifespan of the power supply device.

[0005] Therefore, how to develop a power supply device to solve the problems faced by existing technologies is a pressing issue that needs to be addressed in this field. Utility Model Content

[0006] The purpose of this invention is to provide a power supply device. The power supply device includes an insulating and fixing assembly structure, a housing, a circuit board, and locking elements. The insulating and fixing assembly structure includes an insulating body and a first and second fixing sleeve made of metal. The insulating and fixing assembly structure is disposed between the circuit board and the housing. The metal locking elements pass through the mounting holes of the circuit board and are locked within the first fixing sleeve of the insulating body. The fixing part of the housing and the second fixing sleeve of the insulating body are locked together. Therefore, the power supply device of this invention has the reliability of metal screw fixing while also possessing the insulation performance of plastic screws, effectively reducing the required safety distance between electronic components and screws, improving the utilization rate of the circuit board, and reducing the difficulty of electronic component layout.

[0007] To achieve the above objectives, this invention provides a power supply device. The power supply device includes an insulating and fixing assembly structure, a housing, a circuit board, and a locking element. The insulating and fixing assembly structure includes an insulating body, a first fixing sleeve, and a second fixing sleeve. The insulating body includes a first accommodating space, a second accommodating space, and an insulating portion disposed between the first and second accommodating spaces. The first fixing sleeve is disposed in the first accommodating space. The second fixing sleeve is disposed in the second accommodating space. The housing includes an inner surface and a fixing portion, the fixing portion protruding from the inner surface. The circuit board includes at least one electronic component and at least one mounting hole. The insulating and fixing assembly structure is disposed between the circuit board and the housing, and the locking element passes through at least one mounting hole on the circuit board and is locked within the first fixing sleeve of the insulating body, and the fixing portion of the housing and the second fixing sleeve of the insulating body are locked together.

[0008] In some embodiments, the insulating portion has a first distance greater than 2 millimeters.

[0009] In some embodiments, the locking element is at a distance from the insulating portion.

[0010] In some embodiments, the first fixing sleeve and the second fixing sleeve are fixed in the first accommodating space and the second accommodating space respectively by a secondary injection molding process or a hot melt process.

[0011] In some embodiments, the locking element is a metal screw, and the first fixing sleeve has a first internal thread, which is screwed into and fixed to an external thread of the metal screw.

[0012] In some embodiments, the first fixing sleeve and the second fixing sleeve are made of metal, and / or the insulating body is made of plastic or ceramic.

[0013] In some embodiments, the second fixing sleeve has a second internal thread, and the fixing part of the housing has an external thread, wherein the second internal thread and the external thread of the fixing part are screwed together.

[0014] In some embodiments, the first fixing sleeve and / or the second fixing sleeve each have at least one fixing ring, the at least one fixing ring being respectively surrounded around a first outer surface of the first fixing sleeve and a second outer surface of the second fixing sleeve.

[0015] In some embodiments, the first fixing sleeve and / or the second fixing sleeve is cylindrical or drum-shaped.

[0016] In some embodiments, the end of the first fixing sleeve away from the insulating portion has a first diameter, and the end of the first fixing sleeve near the insulating portion has a second diameter, wherein the first diameter is smaller than the second diameter.

[0017] In some embodiments, the end of the second fixing sleeve away from the insulating portion has a third diameter, and the end of the second fixing sleeve near the insulating portion has a fourth diameter, wherein the third diameter is smaller than the fourth diameter.

[0018] In some embodiments, the insulating fixing assembly structure is a cylinder, a dodecagonal prism, a quincunx prism, or a prism. Attached Figure Description

[0019] The following detailed description of the present invention and the schematic diagrams of the embodiments are intended to enable those skilled in the art to more fully understand the above content, and are not intended to limit the present invention.

[0020] Figure 1 This is a schematic diagram of the power supply device according to the first embodiment of the present invention;

[0021] Figure 2 For the purposes of this utility model, Figure 1 A schematic diagram of the insulating and fixing assembly structure of the power supply device;

[0022] Figure 3 for Figure 2 An exploded view of the insulating fixed assembly structure;

[0023] Figure 4 for Figure 1 A cross-sectional structural diagram of the power supply device;

[0024] Figure 5 for Figure 2 A schematic diagram of the structure of the first fixing sleeve of the insulating fixing assembly structure;

[0025] Figure 6 for Figure 2 A cross-sectional schematic diagram of the insulating and fixing assembly structure;

[0026] Figure 7 This is a schematic diagram of the insulating fixing assembly structure according to the second embodiment of this utility model;

[0027] Figure 8 This is a schematic diagram of the insulating fixing assembly structure according to the third embodiment of this utility model;

[0028] Figure 9 This is a schematic diagram of the structure of the first fixing sleeve of the insulating fixing assembly structure according to the fourth embodiment of this utility model;

[0029] Figure 10 This is a schematic diagram of the structure of the first fixing sleeve of the insulating fixing assembly structure according to the fifth embodiment of this utility model; and

[0030] Figure 11A and 11B This diagram compares the power supply device of this utility model with prior art power supply devices in terms of safety regulations.

[0031] The reference numerals in the attached figures are explained as follows:

[0032] 100: Power supply device

[0033] 1: Insulation and fixing assembly structure

[0034] 10: Insulating body

[0035] 101: First Accommodation Space

[0036] 102: Second Accommodation Space

[0037] 103: Insulation section

[0038] 11, 11a: First fixing sleeve

[0039] 110: First outer surface

[0040] 111: First internal thread

[0041] 12, 12a: Second fixing sleeve

[0042] 120: Second outer surface

[0043] 121: Second internal thread

[0044] 13: Fixing ring

[0045] 2: Casing

[0046] 21: Inner surface

[0047] 211: External thread

[0048] 22: Fixing part

[0049] 3: Circuit board

[0050] 31: Electronic components

[0051] 32: Mounting hole

[0052] 4: Locking element

[0053] 41: External thread

[0054] D1: First Distance

[0055] D2: Distance

[0056] R1: First diameter

[0057] R2: Second diameter

[0058] R3: Third diameter

[0059] R4: Fourth diameter

[0060] L1: Extension line

[0061] L2: Extension line

[0062] L3: Horizontal line Detailed Implementation

[0063] Some typical embodiments embodying the features and advantages of this invention will be described in detail in the following description. It should be understood that this invention can have various variations in different ways, all of which do not depart from the scope of this invention, and the descriptions and drawings herein are for illustrative purposes only and not for limiting the invention. For example, if the following description of a first feature disposed on or above a second feature indicates that it includes embodiments where the first and second features are in direct contact, and also includes embodiments where additional features may be disposed between the first and second features, so that the first and second features may not be in direct contact. Furthermore, different embodiments in this disclosure may use repeated reference numerals and / or markings. These repetitions are for simplification and clarity and are not intended to limit the relationships between the various embodiments and / or the described appearance structures. Moreover, to facilitate the description of the relationship between one element or feature component and another element(s) or feature component(s) in the drawings, spatially related terms such as "upper," "lower," "top," "bottom," and similar terms may be used. In addition to the orientations shown in the accompanying drawings, spatially relevant terms are used to cover different orientations of the device in use or operation. The device may also be otherwise positioned (e.g., rotated 90 degrees or located in other orientations), and the descriptions of the spatially relevant terms used will be interpreted accordingly. Furthermore, when an element is referred to as "connected to" or "coupled to" another element, it may be directly connected to or coupled to the other element, or there may be intervening components. For example, the term "thermally coupled" as used herein can refer to either direct contact forming a heat transfer path or indirect heat transfer path forming through other components. Although the numerical ranges and parameters of the broad scope of this disclosure are approximate, values ​​are stated as precisely as possible in specific examples. Additionally, it is understood that although terms such as "first," "second," and "third" may be used in the claims to describe different elements, these elements should not be limited by these terms, and the elements described accordingly in the embodiments are represented by different element symbols. These terms are used to distinguish different components. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element without departing from the scope of the embodiments. The term “and / or” as used hereinforcingly includes any or all of the combinations of one or more of the related listed items.

[0064] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 . Figure 1 This is a schematic diagram of the power supply device according to the first embodiment of the present invention. Figure 2 For the purposes of this utility model, Figure 1 A schematic diagram of the insulation and fixing assembly structure of the power supply device. Figure 3 for Figure 2 An exploded view of the insulating fixed assembly structure. Figure 4 for Figure 1 A cross-sectional structural diagram of the power supply device. Figure 5 for Figure 2 A schematic diagram of the first fixing sleeve of the insulating fixing assembly structure. Figure 6 for Figure 2 A cross-sectional schematic diagram of the insulating and fixing assembly structure.

[0065] like Figures 1 to 4 As shown, the power supply device 100 of this invention includes an insulating and fixing assembly structure 1, a housing 2, a circuit board 3, and a locking element 4. The insulating and fixing assembly structure 1 includes an insulating body 10, a first fixing sleeve 11, and a second fixing sleeve 12. The insulating body 10 includes a first accommodating space 101, a second accommodating space 102, and an insulating portion 103, which is disposed between the first accommodating space 101 and the second accommodating space 102. The first fixing sleeve 11 is disposed in the first accommodating space 101. The second fixing sleeve 12 is disposed in the second accommodating space 102. The housing 2 includes an inner surface 21 and a fixing portion 22, which protrudes from the inner surface 21. The circuit board 3 includes at least one electronic component 31 and at least one mounting hole 32. An insulating fixing assembly structure 1 is disposed between the circuit board 3 and the housing 2, and a locking element 4 passes through at least one mounting hole 32 of the circuit board 3 and is locked within the first fixing sleeve 11 of the insulating body 1, while the fixing part 22 of the housing 2 and the second fixing sleeve 12 of the insulating body 10 are locked together. In other words, the locking element 4 passes through the circuit board 3, so that the circuit board 3 is effectively fixed to the insulating fixing assembly structure 1 and is supported by the insulating fixing assembly structure 1.

[0066] like Figure 2 and Figure 3As shown, the insulating body 10 can be, but is not limited to, a hexagonal columnar structure, with the first accommodating space 101 and the second accommodating space 102 respectively disposed at its two opposite ends for the first fixing sleeve 11 and the second fixing sleeve 12 to be respectively disposed therein. In some embodiments, the insulating body 10 can be made of an insulating plastic material, but is not limited thereto. In this embodiment, an insulating portion 103 is provided between the first accommodating space 101 and the second accommodating space 102 to separate the two accommodating spaces 101 and 102. In some embodiments, the insulating body 10 can be, but is not limited to, a one-piece molded structure, and its appearance can vary according to the actual application, for example: circular, square, quincunx-shaped, or other various shapes.

[0067] In some embodiments, such as Figure 4 As shown, the fixing part 22 of the housing 2 can contact or abut against the insulating part 103, so that the fixing part 22 of the housing 2 provides support for the insulating fixing assembly structure 1. Therefore, the insulating fixing assembly structure 1 can provide a good fixing effect for the housing 2 and the circuit board 3, while achieving effective insulation performance. Therefore, the distance between the electronic components 31 on the circuit board 3 and the mounting holes 32 used for fixing can be greatly shortened, thereby greatly improving the layout space of the circuit board 3.

[0068] In some embodiments, the power supply device 100 may be used in an on-board charger.

[0069] like Figure 4 As shown, in some embodiments, the insulating portion 103 of the insulating body 10 of the insulating fixing assembly structure 1 has a first distance D1, which is greater than 2 mm, i.e., a safety distance of 2 mm. Therefore, the components installed in the first accommodating space 101 and the second accommodating space 102 can achieve better electrical isolation.

[0070] like Figure 4 As shown, in this embodiment, the locking element 4 and the insulating part 103 are separated by a distance D2, but this is not a limitation. Therefore, the locking element 4 does not directly contact the insulating part 103, thereby improving the durability of the insulating body 10 and the effectiveness of electrical isolation.

[0071] In some embodiments, the first fixing sleeve 11 and the second fixing sleeve 12 can be fixed in the first accommodating space 101 and the second accommodating space 102 respectively by a secondary injection molding process or a hot melt process, and are not limited thereto. With this installation method, the first fixing sleeve 11 and the second fixing sleeve 12 can fit tightly in the first accommodating space 101 and the second accommodating space 102, increasing the reliability of the insulating fixing assembly structure 1.

[0072] In this embodiment, the locking element 4 is a metal screw, but it is not limited thereto. The first fixing sleeve 11 has a first internal thread 111, which is screwed into and fixed to the external thread 41 of the metal screw. In some embodiments, the first fixing sleeve 11 and the second fixing sleeve 12 may be made of, but are not limited to, metal. In other embodiments, the insulating body 10 may be made of plastic or ceramic, but is not limited thereto. Therefore, by screwing the metal first fixing sleeve 11 and the metal screw into each other, the stability of the connection and fixation of the circuit board 3 and the insulating fixing assembly structure 1 can be improved.

[0073] In some embodiments, the second fixing sleeve 12 has a second internal thread 121, and the fixing part 21 of the housing 2 has an external thread 211. The second internal thread 121 and the external thread 211 of the fixing part 21 correspond to each other and are screwed together. Therefore, the metal second fixing sleeve 12 and the fixing part 22 of the housing 2 (preferably, but not limited to, metal) correspond to each other and are screwed together to improve the stability of the connection and fixation of the housing 2 and the insulating fixing assembly structure 1.

[0074] Please see Figure 5 and Figure 6 and cooperate Figure 3 and Figure 4 . Figure 5 for Figure 2 A schematic diagram of the first fixing sleeve of the insulating fixing assembly structure. Figure 6 for Figure 2 A cross-sectional schematic diagram of the insulating fixing assembly structure is provided. In some embodiments, the first fixing sleeve 11 may be, but is not limited to, a hollow conical sleeve structure. That is, its second diameter R2 is larger than its first diameter R1. The second fixing sleeve 12 may be, but is not limited to, the same structure as the first fixing sleeve 11. Therefore, Figure 5 uses the first fixing sleeve 11 as a representative, and the structure of the second fixing sleeve 12 will not be described in detail. In this embodiment, the angle between the extension line L1 from the second diameter R2 to the first diameter R1 and the horizontal line L3 is approximately 3 degrees, but is not limited to this. Similarly, in Figure 6 In this embodiment, the angle between the extension line L2 (not shown) of the second fixing sleeve 12 extending from the fourth diameter R4 to the third diameter R1 and the horizontal line can also be 3 degrees, and is not limited to this. In this embodiment, by designing the first fixing sleeve 11 and the second fixing sleeve 12 as conical shapes, the first fixing sleeve 11 and the second fixing sleeve 12 can be more securely engaged and fixed in the first accommodating space 101 or the second accommodating space 102, thereby increasing the reliability of the connection and fixation.

[0075] Please refer to it again. Figure 6 and cooperate Figure 4As shown in the figure, when the first fixing sleeve 11 is disposed in the first accommodating space 101, its end with a smaller first diameter R1 is disposed at the end away from the insulating part 103, while its end with a larger second diameter R2 is disposed at the end closer to the insulating part 103. This allows the first fixing sleeve 11 to be securely engaged within the first accommodating space 101. Similarly, when the second fixing sleeve 12 is disposed in the second accommodating space 102, its end with a smaller third diameter R3 is disposed at the end away from the insulating part 103, while its end with a larger fourth diameter R4 is disposed at the end closer to the insulating part 103. Therefore, the second fixing sleeve can also be securely engaged within the second accommodating space 102.

[0076] In some embodiments, the height of the insulating fixing assembly structure 1 is equal to the sum of the pitch of the first internal thread 111 of the first fixing sleeve 11 multiplied by the number of turns of the first internal thread 111, plus the sum of the pitch of the second internal thread 121 of the second fixing sleeve 12 multiplied by the number of turns of the second internal thread 121, and a safety distance (e.g., 2 mm).

[0077] Please see Figure 7 , Figure 8 and cooperate Figure 2 . Figure 7 This is a schematic diagram of the insulating fixing assembly structure according to the second embodiment of the present invention. Figure 8 This is a schematic diagram of the insulating fixing assembly structure according to the third embodiment of the present invention. As can be seen from these different embodiment diagrams, the insulating body 10 of the insulating fixing assembly structure 1 can have various forms, for example, it can be a cylinder (not shown) or a quincunx prism (such as...). Figure 7 (as shown), or a dodecagonal prism (such as...) Figure 8 (as shown), or a hexagonal prism (such as...) Figure 2 (as shown) etc. That is to say, the structure and appearance of the insulation fixing assembly structure 1 can be adjusted according to actual needs, and the friction or structural strength during installation can be increased by adjusting the appearance and structural design of different insulation fixing assembly structures 1.

[0078] Please see Figure 9 and cooperate Figure 2 and Figure 4 . Figure 9 This is a schematic diagram of the structure of the first fixing sleeve of the insulating fixing assembly structure according to the fourth embodiment of the present invention. In this embodiment, the structure and function of the first fixing sleeve 11a are similar to those of the first fixing sleeve 11 in the first embodiment. The same component numbers represent the same structural components and functions, and the structure of the second fixing sleeve 12a is the same as that of the first fixing sleeve 11a, so it will not be described again here. However, the difference between this embodiment and the first embodiment is that the first fixing sleeve 11a has at least one fixing ring 13, such as Figure 9As shown, at least one fixing ring 13 surrounds the first outer surface 110 of the first fixing sleeve 11a, thereby increasing the friction when it is fitted inside the first receiving space 101, thus helping it to be more securely engaged and fixed inside the first receiving space 101, and increasing the reliability of the connection and fixation.

[0079] Please see Figure 10 and cooperate Figure 3 and Figure 6 . Figure 10 This is a schematic diagram of the structure of a fixing sleeve or a second fixing sleeve in the insulating fixing assembly structure according to the fifth embodiment of this utility model. As can be seen from these different embodiment diagrams, the first fixing sleeve 11 can have various shapes, for example, it can be cylindrical (not shown) or conical (e.g., ...). Figure 3 and 6 (as shown), or drum-shaped (as shown) Figure 10 As shown in the figure, the second fixing sleeve 12 has the same structure as the first fixing sleeve 11, so it will not be described again here. That is to say, the structure and appearance of the first fixing sleeve 11 and the second fixing sleeve 12 can be adjusted according to actual needs, and the reliability of the connection and locking can be increased by different appearance and structural designs of the first fixing sleeve 11 and the second fixing sleeve 12.

[0080] Please see Figure 11A and Figure 11B and cooperate Figure 1 . Figure 11A and Figure 11B This diagram compares the power supply device of this invention with prior art power supply devices within the safety regulations. Figure 11A As shown, prior art power supplies do not employ the insulating and fixing assembly structure 1 of this invention, and a certain safety distance must be maintained around the mounting holes 32 (as shown by the circle around the mounting holes, with a radius of 10mm). Electronic components 31 cannot be placed within this safety distance. Therefore, to mount electronic components 31 on the circuit board 3, a larger layout area is required, for example, using a square circuit board with a side length of 158mm. Figure 11B As shown, since the power supply device 100 of this case includes an insulating fixed assembly structure 1, electronic components 31 (and...) Figure 11A The same electronic component 31 can be placed on the circuit board 3 closer to the mounting hole 32, that is, it can be installed within the circle around the mounting hole 32. Therefore, when the same electronic component 31 as 10A is installed on the circuit board 3, the layout requirements can be reduced. For example, the same electronic component 31 can be configured using a square circuit board with a side length of 138mm.

[0081] In summary, the purpose of this utility model is to provide a power supply device. The power supply device includes an insulating and fixing assembly structure, a housing, a circuit board, and locking elements. The insulating and fixing assembly structure includes an insulating body and a first and second fixing sleeve made of metal. The insulating and fixing assembly structure is disposed between the circuit board and the housing. The metal locking elements pass through the mounting holes of the circuit board and are locked within the first fixing sleeve of the insulating body. Furthermore, the fixing part of the housing and the second fixing sleeve of the insulating body are locked together. Therefore, the power supply device of this invention has the reliability of metal screw fixing while also possessing the insulation performance of plastic screws, effectively reducing the required safety distance between electronic components and screws, improving the utilization rate of the circuit board, and reducing the difficulty of electronic component layout.

Claims

1. A power supply device, characterized in that, Include: An insulating and fixed assembly structure, comprising: An insulating body includes a first accommodating space, a second accommodating space, and an insulating part, wherein the insulating part is disposed between the first accommodating space and the second accommodating space; A first fixing sleeve is disposed in the first accommodating space; as well as A second fixing sleeve is disposed in the second accommodating space; A housing includes an inner surface and a fixing part, the fixing part protruding from the inner surface; A circuit board comprising at least one electronic component and at least one mounting hole; and A locking element, The insulating fixing assembly is disposed between the circuit board and the housing, and the locking element passes through at least one mounting hole of the circuit board and is locked in the first fixing sleeve of the insulating body, and the fixing part of the housing and the second fixing sleeve of the insulating body are locked together.

2. The power supply device as claimed in claim 1, characterized in that, The insulating portion has a first distance, which is greater than 2 millimeters.

3. The power supply device as claimed in claim 1, characterized in that, The locking element is at a distance from the insulating part.

4. The power supply device as claimed in claim 1, characterized in that, The first fixing sleeve and the second fixing sleeve are respectively fixed in the first accommodating space and the second accommodating space by a secondary injection molding process or a hot melt process.

5. The power supply device as claimed in claim 1, characterized in that, The locking element is a metal screw, and the first fixing sleeve has a first internal thread, which is screwed and fixed to the metal screw with an external thread.

6. The power supply device as claimed in claim 1, characterized in that, The first fixing sleeve and the second fixing sleeve are made of metal, and / or the insulating body is made of plastic or ceramic.

7. The power supply device as claimed in claim 1, characterized in that, The second fixing sleeve has a second internal thread, and the fixing part of the housing has an external thread. The second internal thread and the external thread of the fixing part are screwed together.

8. The power supply device as claimed in claim 1, characterized in that, The first fixing sleeve and / or the second fixing sleeve each have at least one fixing ring, and the at least one fixing ring is respectively wrapped around a first outer surface of the first fixing sleeve and a second outer surface of the second fixing sleeve.

9. The power supply device as claimed in claim 1, characterized in that, The first fixing sleeve and / or the second fixing sleeve is cylindrical or drum-shaped.

10. The power supply device as claimed in claim 1, characterized in that, The first fixing sleeve has a first diameter at the end away from the insulating part and a second diameter at the end of the first fixing sleeve close to the insulating part, wherein the first diameter is smaller than the second diameter.

11. The power supply device as claimed in claim 1, characterized in that, The second fixing sleeve has a third diameter at the end away from the insulating part and a fourth diameter at the end near the insulating part, wherein the third diameter is smaller than the fourth diameter.

12. The power supply device as claimed in claim 1, characterized in that, The insulating fixing assembly structure is a cylinder, a dodecagonal prism, a plum blossom prism, or a prism.

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