Planar transformation element and LED power supply

Abstract

The utility model discloses a planar transformation element and an LED power supply, and relates to the technical field of LED power supplies, and adopts the technical scheme that the planar transformation element comprises a transformation mainboard on which a winding is arranged; the magnetic core assembly is arranged around the voltage transformation mainboard, and the middle of the magnetic core assembly is connected with the through hole of the voltage transformation mainboard in an inserted mode; the connecting assembly is arranged on the lower side of the voltage transformation main board, and the upper side face of the connecting assembly is attached to the voltage transformation main board; the connecting assembly comprises a plurality of connecting plates which are long-strip-shaped plate bodies; the connecting plate is provided with a conductive position corresponding to the connecting block on the main strain compression plate, and the conductive position can conduct the upper side and the lower side of the connecting plate. The beneficial effects of the utility model are that the scheme uses the connecting assembly as the conductive structure of the planar transformation element to provide an implementation basis for the surface mounting of the planar transformation element, and compared with the traditional pin-type connection, since the external circuit board does not need to be penetrated and welding spots are left on the lower side of the external circuit board, the surface mounting of the planar transformation element is not needed. Therefore, the overall thickness of related structures of the internal circuit board can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of LED power supplies, in particular to a planar transformer element and an LED power supply. Background Art

[0002] LED lights are one of the most common lighting fixtures today, widely used due to their low energy consumption, high brightness, and other advantages. Furthermore, LED beads can be arranged in a variety of ways to achieve different lighting effects. Besides being used as simple lighting fixtures, they are also often used as decorative lamps.

[0003] LED lamp beads have the advantage of being small in size. They are usually grouped together in different ways according to needs. The corresponding LED lamp groups require a power supply, which serves as an external power supply connection and conversion device. For LED lamp beads with very small size, the power supply is relatively large. How to reduce the size of the power supply through structural optimization based on the existing structure is the problem to be solved in this solution. Utility Model Content

[0004] In view of one of the deficiencies of the prior art, the present invention provides a planar transformer element and an LED power supply to solve the problem of reducing the volume of the LED power supply.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: a planar transformer element and an LED power supply, comprising:

[0006] The transformer main board is a PCB board with windings arranged thereon. Through holes are provided on the transformer main board corresponding to the windings. A number of connection blocks are provided at both ends of the transformer main board, and the transformer main board can be electrically connected to the external circuit through the connection blocks.

[0007] The magnetic core component is arranged around the transformer mainboard, and the middle part of the magnetic core component is plugged into the through hole of the transformer mainboard;

[0008] A magnetic core covering member surrounds and covers the outside of the magnetic core assembly, and the magnetic core assembly is fixedly connected to the transformer mainboard through the magnetic core covering member;

[0009] The connecting component is arranged on the lower side of the transformer mainboard, and the upper side of the connecting component is in contact with the transformer mainboard; the connecting component includes:

[0010] There are several connecting plates, which are long strip-shaped plates. The connecting plates are provided with conductive bits corresponding to the connecting blocks on the transformer main board, and the conductive bits can conduct the upper and lower sides of the connecting plates.

[0011] Preferably, a notch is provided at the edge of each of the connection blocks on the transformer mainboard;

[0012] The side of the connecting plate facing the outside of the transformer main board is a vertical plane;

[0013] Two connecting plates are respectively arranged on the lower side of each end of the transformer main board; the connecting plates can be connected to the external circuit board in the form of patches.

[0014] An LED power supply, comprising:

[0015] A power supply mainboard, on which the aforementioned planar transformer element is disposed;

[0016] An interface component group, provided on the power supply mainboard, and capable of connecting to an external circuit;

[0017] The shell component has a cavity inside, and the power supply mainboard is arranged in the cavity; the shell component is provided with an opening corresponding to the interface component group.

[0018] Preferably, the components on the power supply mainboard are all processed by SMD method.

[0019] Preferably, the interface element group includes:

[0020] The main interface can be connected to the plug of the external power supply line; the main interface includes:

[0021] A connecting piece, fixedly arranged on one side of the power supply mainboard;

[0022] The plug has one end extending in a direction away from the power supply mainboard and the other end passing through the connecting piece and electrically connected to the power supply mainboard.

[0023] Preferably, the connector has two grooves on a side facing the power supply mainboard, and the ends of the two plugs facing the power supply mainboard are respectively located in one groove;

[0024] The power mainboard is provided with an "L"-shaped conductive part corresponding to the groove. The conductive part is embedded in the groove and fixedly connected to the end of the plug post.

[0025] Preferably, the housing assembly comprises:

[0026] The plug-in channel is opened on the shell wall of the shell assembly, and the plug-in channel corresponds to the main interface setting; the shape of the plug-in channel corresponds to the plug of the external circuit. When the plug of the external circuit is plugged into the main interface, the peripheral side of the plug is in contact with the inner wall of the plug-in channel.

[0027] Preferably, the housing assembly comprises:

[0028] The first housing is located on the upper side of the power supply mainboard, and the side of the first housing is provided with a side plate extending downward; the first housing is provided with a half component 1;

[0029] The second housing is located on the lower side of the power supply mainboard; the first housing cover is buckled on the second housing, and the inner side surface of the side plate of the first housing is in contact with the outer side of the edge of the second housing; the second housing is provided with a second half component;

[0030] When the first shell and the second shell are buckled together, the first half component and the second half component are assembled into the insertion channel.

[0031] Preferably, the first half component is a through-groove structure provided on the side wall of the first shell, the groove wall of which extends toward the interior of the first shell, and a reinforcing rib is provided between the groove wall and the side wall of the first shell;

[0032] The second half component is a block structure arranged on the second shell, and a concave groove is opened on the block; when the first shell and the second shell are buckled together, the inner side surface of the groove wall of the first half component and the outer side surface of the block of the second half component are in contact with each other.

[0033] Preferably, the first half component comprises:

[0034] An upper concave portion is provided corresponding to each of the plug posts, and the upper concave portion is arc-shaped;

[0035] The groove of the second half component is a concave arc-shaped structure corresponding to the plug post;

[0036] The outer side surface of the connector of the main interface abuts against the side of the first half component and the second half component facing the power supply mainboard.

[0037] Compared with the existing technology, this solution has the following beneficial effects: By using the connection component as the conductive structure of the planar transformer element, this solution provides a basis for the implementation of the patch of the planar transformer element. Compared with the traditional pin-type connection, since there is no need to penetrate the external circuit board and leave solder joints on the lower side of the external circuit board, the overall thickness of the internal circuit board related structure can be reduced.

[0038] This solution changes the shell structure of the power supply and forms a plug-in channel corresponding to the main interface on the shell, eliminating the need for an additional interface support structure and further reducing the thickness of the power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a schematic diagram of the planar transformer structure of the embodiment of the present application. Figure 1 ;

[0040] Figure 2 This is a schematic diagram of the planar transformer structure of the embodiment of the present application. Figure 2 ;

[0041] Figure 3 This is a schematic diagram of the LED power supply structure of an embodiment of the present application;

[0042] Figure 4 This is an exploded diagram of the LED power supply according to an embodiment of the present application.

[0043] In the picture:

[0044] 1. Planar transformer element; 11. Transformer main board; 111. Connecting block; 112. Notch; 12. Magnetic core assembly; 13. Magnetic core covering; 14. Connecting assembly; 141. Connecting plate;

[0045] 2. Power supply main board; 21. Auxiliary circuit board;

[0046] 3. Interface component group; 31. Main interface;

[0047] 4. Shell assembly; 41. First shell; 42. Second shell; 43. Insertion channel; 431. Half component one; 432. Half component two. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0049] See also Figure 1 and Figure 2 , this application provides the following technical solutions:

[0050] A planar transformer component includes a transformer mainboard 11 and a magnetic core assembly 12. The transformer mainboard 11 is a PCB board with windings disposed thereon. Through-holes corresponding to the windings are provided on the transformer mainboard 11. A plurality of connection blocks 111 are provided at each end of the transformer mainboard 11. The transformer mainboard 11 can be electrically connected to an external circuit via the connection blocks 111. The connection blocks 111 are conductive areas on the edges of the transformer mainboard 11, corresponding to the pin locations of a conventional PCB board. However, unlike conventional transformer components, this solution retains only the conductive areas as connection blocks 111, without providing pins. The magnetic core assembly 12 is disposed around the transformer mainboard 11, with the middle portion of the magnetic core assembly 12 plugging into the through-holes of the transformer mainboard 11. The magnetic core assembly 12 can be constructed using existing technology. This aspect is not a key improvement point of this solution and will not be elaborated on here. A magnetic core covering 13 is provided on the outside of the magnetic core assembly 12. The magnetic core covering 13 surrounds and covers the outside of the magnetic core assembly 12, playing the role of fixing and combining the magnetic core assembly 12, so that the magnetic core assembly 12 and the transformer mainboard 11 are fixedly connected. Because the conventional magnetic core assembly 12 is often composed of two parts, and due to material problems, there is usually no direct connection force between the two parts, and generally a bonding connection method is adopted. This solution uses a magnetic core covering 13 to form a surrounding covering structure around the magnetic core assembly 12, so that the two parts of the magnetic core assembly 12 remain in a spliced ​​state, and the magnetic core covering 13 can be made of a long film-like material. Different from the conventional pin structure, this solution is provided with a connecting assembly 14 on the lower side of the transformer mainboard 11, and the upper side of the connecting assembly 14 is in contact with the transformer mainboard 11; the transformer mainboard 11 is electrically connected to the external circuit board through the connecting assembly 14. The connecting assembly 14 includes a plurality of connecting plates 141 . The connecting plates 141 are elongated plates. Conductive terminals are provided on the connecting plates 141 corresponding to the connecting blocks 111 on the strain main board 11 . The conductive terminals can conduct electricity between the upper and lower sides of the connecting plates 141 .

[0051] The number of connecting plates 141 is selected based on the actual thickness of the parts. In this solution, two connecting plates 141 arranged vertically are set at each end of the transformer mainboard 11, and the conductive positions of the connecting plates 141 and the connecting blocks 111 on the transformer mainboard 11 are set in a one-to-one correspondence.

[0052] This solution introduces a connecting assembly 14, utilizing a connecting plate 141 as a conductive structure. This allows for surface mount soldering of the connecting plate 141 to the external circuit board. Compared to traditional pin-type connections, this eliminates the need to penetrate the external circuit board, leaving solder joints on the underside. This reduces the overall thickness of the internal circuit board structure. Furthermore, the use of connecting plate 141 provides more stable support and connection forces on the underside of the transformer mainboard 11.

[0053] Based on the above implementation plan, see Figure 2Each connection block 111 on the transformer mainboard 1 has a notch 112 along its edge. The side of the connecting plate 141 facing the outside of the transformer mainboard 11 is a vertical plane. Connecting plate 141 does not have a corresponding notch structure, but is instead a rectangular plate with straight edges. When connected to the transformer mainboard 1, the edges of connecting plate 141 are flush with those of the transformer mainboard 1, shielding the notch 112 on the transformer mainboard 1 from below.

[0054] The reserved notch 112 can be used as a connection port for later maintenance. Pins can be soldered to the notch 112 to connect to other components, or as a connection point for maintenance wiring. In addition, the notch 112 can also serve as a positioning point for the external housing. With the help of a pressure rod structure provided on the external housing, it is inserted into the notch 112 from top to bottom. The side of the lower end of the pressure rod is in contact with the notch 112, and the end surface of the lower end of the pressure rod is against the upper side of the connecting plate 141. Even if there is a large external vibration, it can ensure that the transformer component is not easily separated from the external circuit board.

[0055] See also Figure 3 and Figure 4 The present solution also provides an LED power supply, including a power supply mainboard 2 provided with the aforementioned planar transformer element 1, an interface element group 3 provided on the power supply mainboard 2, and the interface element group 3 can be connected to an external circuit. A shell assembly 4 is provided on the outside of the power supply mainboard 2, a cavity for placing the power supply mainboard 2 is provided inside the shell assembly 4, and an opening is provided on the shell assembly 4 corresponding to the interface element group 3. All electronic components on the power supply mainboard 2 are processed by patch processing. The specific circuit of the power supply mainboard 2 can be processed by existing technology. This aspect is not the key point of the present solution and will not be described here. Because of the improved form of the planar transformer element 1 of the present solution, all components of the power supply mainboard 2 are processed by patch processing, so the lower side of the power supply mainboard 2 can be made flat as a whole, and the power supply mainboard 2 can also be directly attached to the lower side of the shell assembly 4. Thereby reducing the overall thickness of the power supply.

[0056] Based on the above implementation plan, see Figure 4 , also considering the reduction of the overall thickness of the power supply, when other circuit boards need to be set in addition to the power mainboard 2 inside the power supply, such as Figure 4 The auxiliary circuit board 21 in the power supply main board 21 can be placed on the upper side of the auxiliary circuit board 21. The specific function and structure of the auxiliary circuit board 21 can be selectively set by technicians according to actual conditions.

[0057] Based on the above embodiment, the interface component group 3 includes a main interface 31, which can be plugged into the plug of the external power supply line. In addition, the interface component group 3 also includes other interface components, which are standard components of the existing technology. This solution does not improve other interfaces.

[0058] The main interface 31 in this embodiment consists of a connector fixedly mounted on one side of the power supply motherboard 2. This connector is made of plastic and features a metal pin. One end of the pin extends away from the power supply motherboard 2, while the other end passes through the connector and is electrically connected to the motherboard. The connector has two grooves on the side facing the power supply motherboard 2, with the two pins positioned in one groove at their ends facing the motherboard 2. An L-shaped conductive member is installed in the corresponding grooves on the power supply motherboard 2. The conductive member is embedded in the groove and securely connected to the end of the pin.

[0059] The connector consists of a rectangular portion and an arc-shaped portion. The rectangular portion is a rectangular block structure, while the arc-shaped portion is a semicircular arc structure. Two arc-shaped portions are symmetrically located at each end of the rectangular portion. A groove is provided on the side of the rectangular portion facing the power supply motherboard 2. An annular boss is provided on the side of the connector facing away from the power supply motherboard 2, with one annular boss located around each plug. The plug serves as a metal conductor connecting to external circuitry, while the connector supports the plug and bears the force when the plug is inserted.

[0060] On the basis of the above implementation scheme, a plug-in channel 43 is opened on the shell wall of the shell assembly 4, and the plug-in channel 43 is arranged corresponding to the main interface 31; the shape of the plug-in channel 43 corresponds to the plug of the external line. When the plug of the external line is plugged into the main interface 31, the peripheral side of the plug is in contact with the inner wall of the plug-in channel 43.

[0061] Unlike conventional technologies, the main interface 31 of this solution no longer has a corresponding plug shell around it. Instead, a plug-in channel 43 is directly formed on the shell assembly 4 as a guide structure for the plug, thereby reducing the corresponding plug shell part structure on the ordinary power supply and further reducing the overall thickness of the power supply.

[0062] Based on the above embodiment, the housing assembly 4 is composed of two parts that snap together: a first housing 41 located above the power supply mainboard 2, and a second housing 42 located below the power supply mainboard 2. The two parts snap together to form a rectangular box. The first housing 41 comprises a rectangular plate with side panels extending downward from its edges. A first half 431 is provided on the first housing 41, corresponding to the insertion channel 43. The first half 431 serves as the upper half of the insertion channel 43. The second housing 42 also comprises a rectangular plate, slightly smaller in area than the rectangular plate of the first housing 41. The first housing 41 snaps onto the second housing 42, with the inner side surfaces of the side panels of the first housing 41 abutting against the outer side surfaces of the edges of the second housing 42. A second half 432 is provided on the second housing 42, serving as the lower half of the insertion channel 43. When the first and second housings 41 and 42 are snapped together, the first half 431 and the second half 432 combine to form the insertion channel 43.

[0063] Half component 1 431 is a through-slot structure provided on the sidewall of the first housing 41. Its walls extend toward the interior of the first housing 41, and reinforcing ribs are provided between the walls and the sidewalls. Half component 1 431 includes an upper recess, one for each post. The upper recess is arc-shaped, and the through-slot of half component 1 431 is approximately M-shaped.

[0064] The second half component 432 is a block structure mounted on the second housing 42, with a recessed groove formed in the block. The recess of the second half component 432 is a concave arc-shaped structure corresponding to the plug-in post. When the first housing 41 and the second housing 42 are fastened together, the inner surface of the groove wall of the first half component 431 and the outer surface of the block of the second half component 432 abut against each other. The upper recess of the first half component 431 and the recess of the second half component 432 combine to form two cylindrical cavities, with a transverse connection between them. The outer surface of the connector of the main interface 31 abuts against the side of the first half component 431 and the second half component 432 facing the power supply motherboard 2.

[0065] With the help of the structure of this solution, the structure for protecting the pins is directly formed on the shell assembly 4 of the power supply, and the connector of the main interface 31 is made separately to connect it to the power supply motherboard 2. In addition to the aforementioned ability to eliminate the protective shell of the interface pins, it also simplifies the connection between the main interface 31 and the power supply motherboard 2, making it easier to assemble.

[0066] On the basis of the above-mentioned implementation scheme, a number of fixing plates are provided on the upper side of the second shell 42, and the power supply mainboard 2 is clamped by the fixing plates. Unlike conventional circuit boards, because the components on the power supply mainboard 2 of this solution are completely processed by patch processing, the bottom surface of the power supply mainboard 2 itself can be attached to the upper surface of the second shell 42 without the need to support the power supply mainboard 2, thereby further reducing the thickness of the finished power supply. Therefore, this solution also adopts a different form of fixing the power supply mainboard 2, and a fixing plate is provided on the upper side of the second shell 42. The plate body of the fixing plate is perpendicular to the rectangular plate of the second shell 42, and several fixing plates are provided around the placement area of ​​the power supply mainboard 2. A clamping structure is provided on the side of the fixing plate facing the power supply mainboard 2. By pressing down the power supply mainboard 2, it is clamped between the fixing plates on the surrounding side, thereby achieving the fixation of the power supply mainboard 2.

[0067] This solution utilizes two different types of clamping structures. A long, strip-shaped clamping strip is installed on the fixed plate on one side of the power supply motherboard 2. The strip is installed on the fixed plate on the same side, with a longitudinal cross-section that forms a right-angled trapezoid. The transverse right-angled sides of the trapezoid connect to the fixed plate, with the oblique sides facing toward the power supply motherboard 2. Several right-angled trapezoidal clamping blocks are installed on the fixed plate on the other side, with two to three clamping blocks installed on each fixed plate.

[0068] Using a snap-on connection greatly facilitates the installation of the power supply motherboard. However, considering that the plastic material may age after long-term use, the snap-on structure may be damaged when removing the power supply motherboard 2 for maintenance. Therefore, this solution adopts a combination of a snap-on strip and a snap-on block, with the longer snap-on strip providing greater snap-on force, and the snap-on block acting as the force-applying structure. When removing the power supply motherboard 2, even if the snap-on structure is damaged due to material aging, the longer and more integrated snap-on strip on one side is less susceptible to damage. Even if several damaged areas appear on the snap-on block, they will remain distributed and can be used for subsequent snap-on connection to the power supply motherboard 2. Combining the two different structures of the snap-on strip and the snap-on block also prevents the power supply motherboard 2 from being difficult to remove later.

[0069] Building on the above-mentioned implementation, the first housing 41 is equipped with a positioning rod corresponding to the planar transformer element 1. This rod is a round rod with a notch at its lower end corresponding to the connecting plate 141. After the power supply mainboard 2 and the second housing 42 are installed, the first housing 41 is snapped onto the second housing 42. The lower end of the rod in the second housing 41 rests against the upper side of the power supply mainboard 2, with its cylindrical portion locked within the notch 112 and its notch aligned with the connecting plate 141. This achieves dual positioning of the power supply mainboard 2 and the planar transformer element 1.

[0070] In the description of the present application and its embodiments, it should be noted that, unless there is a conflict, the embodiments created in the present application and the features in the embodiments can be combined with each other.

[0071] In the description of the invention of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the invention of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the invention of the present application. In addition, the terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second" and the like may explicitly or implicitly include one or more of such features. In the description of the invention of the present application, unless otherwise specified, "multiple" means two or more.

[0072] In the description of the invention of this application, it should be noted that, unless otherwise clearly specified or limited, the terms "installed," "connected," "connected," and "set" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. For those skilled in the art, the specific meanings of the above terms in the invention of this application can be understood based on specific circumstances.

[0073] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0074] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A planar transformer element, characterized in that: include: The transformer main board is a PCB board with windings arranged thereon. Through holes are provided on the transformer main board corresponding to the windings. A number of connection blocks are provided at both ends of the transformer main board, and the transformer main board can be electrically connected to the external circuit through the connection blocks. The magnetic core component is arranged around the transformer mainboard, and the middle part of the magnetic core component is plugged into the through hole of the transformer mainboard; A magnetic core covering member surrounds and covers the outside of the magnetic core assembly, and the magnetic core assembly is fixedly connected to the transformer mainboard through the magnetic core covering member; The connecting component is arranged on the lower side of the transformer mainboard, and the upper side of the connecting component is in contact with the transformer mainboard; the connecting component includes: There are several connecting plates, which are long strip-shaped plates. The connecting plates are provided with conductive bits corresponding to the connecting blocks on the transformer main board, and the conductive bits can conduct the upper and lower sides of the connecting plates.

2. The planar transformer element according to claim 1, wherein: A notch is provided at the edge of each of the connection blocks on the transformer mainboard; The side of the connecting plate facing the outside of the transformer main board is a vertical plane; Two connecting plates are respectively arranged on the lower side of each end of the transformer main board; the connecting plates can be connected to the external circuit board in the form of patches.

3. An LED power supply, characterized in that: include: A power supply mainboard, on which the planar transformer element according to claim 1 or 2 is provided; An interface component group, provided on the power supply mainboard, and capable of connecting to an external circuit; The shell component has a cavity inside, and the power supply mainboard is arranged in the cavity; the shell component is provided with an opening corresponding to the interface component group.

4. The LED power supply according to claim 3, wherein: The components on the power supply mainboard are all processed by SMD method.

5. The LED power supply according to claim 3, wherein: The interface element group includes: The main interface can be connected to the plug of the external power supply line; the main interface includes: A connecting piece, fixedly arranged on one side of the power supply mainboard; The plug has one end extending in a direction away from the power supply mainboard and the other end passing through the connecting piece and electrically connected to the power supply mainboard.

6. The LED power supply according to claim 5, wherein: The connector has two grooves on one side facing the power supply mainboard, and the ends of the two plugs facing the power supply mainboard are respectively located in one groove; The power mainboard is provided with an "L"-shaped conductive part corresponding to the groove. The conductive part is embedded in the groove and fixedly connected to the end of the plug.

7. The LED power supply according to claim 6, wherein: The housing assembly comprises: The plug-in channel is opened on the shell wall of the shell assembly, and the plug-in channel corresponds to the main interface setting; the shape of the plug-in channel corresponds to the plug of the external circuit. When the plug of the external circuit is plugged into the main interface, the peripheral side of the plug is in contact with the inner wall of the plug-in channel.

8. The LED power supply according to claim 7, wherein: The housing assembly comprises: The first housing is located on the upper side of the power supply mainboard, and the side of the first housing is provided with a side plate extending downward; the first housing is provided with a half component 1; The second housing is located on the lower side of the power supply mainboard; the first housing cover is buckled on the second housing, and the inner side surface of the side plate of the first housing is in contact with the outer side of the edge of the second housing; the second housing is provided with a second half component; When the first shell and the second shell are buckled together, the first half component and the second half component are assembled into the insertion channel.

9. The LED power supply according to claim 8, wherein: The first half-part is a through-slot structure provided on the side wall of the first shell, wherein the slot wall extends toward the interior of the first shell, and a reinforcing rib is provided between the slot wall and the side wall of the first shell; The second half component is a block structure arranged on the second shell, and a concave groove is opened on the block; when the first shell and the second shell are buckled together, the inner side surface of the groove wall of the first half component and the outer side surface of the block of the second half component are in contact with each other.

10. The LED power supply according to claim 9, wherein: The first half component comprises: An upper concave portion is provided corresponding to each of the plug posts, and the upper concave portion is arc-shaped; The groove of the second half component is a concave arc-shaped structure corresponding to the plug post; The outer side surface of the connector of the main interface abuts against the side of the first half component and the second half component facing the power supply mainboard.

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