Driving power supply structure

Abstract

The utility model discloses a driving power supply structure, which comprises a metal lower shell, a metal upper shell and a grounding screw, the metal lower shell is provided with a connecting through hole, and the metal upper shell is provided with a connecting blind hole right opposite to the connecting through hole. Or, the metal upper shell is provided with a connecting through hole, and the metal lower shell is provided with a connecting blind hole directly facing the connecting through hole; the connecting through hole is formed in the outer side of the connecting blind hole, the grounding screw penetrates through the connecting through hole and is in threaded connection with the connecting blind hole so as to lock the lower metal shell and the upper metal shell, and the tail end of a screw rod of the grounding screw is arranged on the inner side of the connecting blind hole. According to the utility model, the connecting blind hole is in threaded connection with the grounding screw, and when the grounding screw is connected with the connecting blind hole, the end part of the connecting blind hole is closed, so that metal chips in the connecting blind hole can be remained in the connecting blind hole, and the metal chips cannot be squeezed to fall on a circuit board in the driving power supply by the grounding screw; therefore, undesirable phenomena such as short circuit and machine explosion are reduced.

Description

Technical Field

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

[0002] The driver power supply is an important electronic driving component, such as driving LED lights. The driver power supply consists of a metal upper shell and a metal lower shell, with the driver circuit board located between the upper and lower shells. A grounding screw connects and locks the upper and lower shells, and the upper and lower shells are electrically connected through the grounding screw.

[0003] In existing technologies, metal upper shells typically use either un-taped or pre-taped flanged through holes to connect to grounding screws. When the grounding screw is threaded into the flanged through hole, for un-taped holes, the grounding screw self-taps the hole, generating metal shavings during the automatic threading process. For pre-taped holes, metal shavings remain inside the hole or are generated during locking. These metal shavings can be squeezed onto the circuit board inside the drive unit by the grounding screw, potentially leading to short circuits, device failure, and other malfunctions. Utility Model Content

[0004] The main purpose of this utility model is to propose a drive power supply structure that aims to solve the technical problem in the prior art where metal shavings are easily squeezed onto the circuit board inside the drive when connecting the grounding screw, which can easily lead to short circuits, explosions, and other adverse phenomena.

[0005] To achieve the above objectives, this utility model proposes a driving power supply structure, including a lower metal shell, an upper metal shell, and a grounding screw.

[0006] The lower metal shell is provided with a connecting through hole, and the upper metal shell is provided with a connecting blind hole directly opposite the connecting through hole;

[0007] Alternatively, the upper metal shell is provided with a connecting through hole, and the lower metal shell is provided with a connecting blind hole directly opposite the connecting through hole;

[0008] The connecting through hole is located outside the connecting blind hole. The grounding screw passes through the connecting through hole and is threadedly connected to the connecting blind hole to lock the lower metal shell and the upper metal shell. The end of the grounding screw is located inside the connecting blind hole.

[0009] This utility model is designed with a connection blind hole and a grounding screw threaded connection. When the grounding screw is connected to the connection blind hole, the end of the connection blind hole is closed, so the metal shavings in the connection blind hole will remain in the connection blind hole. The metal shavings will not be squeezed by the grounding screw onto the circuit board inside the power supply, thereby reducing the occurrence of adverse phenomena such as short circuits and machine failure.

[0010] Preferably, the lower metal shell includes a first connecting plate, the upper metal shell includes a second connecting plate, the second connecting plate abuts against the inner side of the first connecting plate, the connecting through hole is provided on the first connecting plate, the connecting blind hole is provided on the second connecting plate, the inner side of the second connecting plate is provided with a connecting protrusion, and the connecting blind hole is provided in the connecting protrusion.

[0011] Preferably, the connecting protrusion is integrally stamped with the second connecting plate, which simplifies the structure and processing.

[0012] Preferably, the lower metal shell includes a first connecting plate, the upper metal shell includes a second connecting plate, the first connecting plate abuts against the inner side of the second connecting plate, the connecting through hole is provided on the second connecting plate, the connecting blind hole is provided on the first connecting plate, the inner side of the first connecting plate is provided with a connecting protrusion, and the connecting blind hole is provided in the connecting protrusion.

[0013] Preferably, the surfaces of the lower metal shell and the upper metal shell are provided with a powder coating or a paint coating.

[0014] Preferably, the connecting through hole is provided with a piercing structure, the piercing structure extends radially toward the inner side of the connecting through hole, the piercing structure is interference-fitted with the screw of the grounding screw, and the piercing structure can pierce the powder coating layer or paint coating when it comes into contact with the screw of the grounding screw.

[0015] Because the surfaces of the lower and upper metal shells are coated with powder or paint, and the inner walls of the connecting through-holes may also be coated with powder or paint, when the grounding screw comes into contact with the lower or upper metal shell containing the connecting through-hole, the powder or paint layer may be insulating and prevent conduction, thus affecting the grounding connection between the upper and lower metal shells. Therefore, this invention incorporates a piercing structure within the connecting through-hole. When the grounding screw passes through the connecting through-hole, it engages with the piercing structure via an interference fit, thereby piercing the powder or paint layer inside the connecting through-hole and easily ensuring contact and conduction between the grounding screw and the connecting through-hole.

[0016] Preferably, the puncture structure includes a plurality of protruding teeth, the ends of which are interference-fitted with the screw of the grounding screw. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the drive power supply structure of this utility model;

[0019] Figure 2 This is an exploded structural diagram of the drive power supply structure of this utility model;

[0020] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0021] Figure 4 This is a schematic diagram of the connecting protrusion of this utility model;

[0022] Figure 5 This is a cross-sectional view of the structure of the present invention, in which the grounding screw locks the lower metal shell and the upper metal shell, and metal shavings remain in the connecting blind hole.

[0023] In the attached diagram: 1-metal lower shell, 11-connecting through hole, 12-first connecting plate, 13-protruding tooth, 2-metal upper shell, 21-connecting blind hole, 22-second connecting plate, 23-connecting protrusion, 3-grounding screw, 4-circuit board, 5-metal shavings.

[0024] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] It should be noted that if the embodiments of this utility model involve directional indicators, such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0027] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0028] like Figures 1 to 5 As shown, a drive power supply structure includes a lower metal shell 1, an upper metal shell 2, and a grounding screw 3, with a circuit board 4 disposed between the lower metal shell 1 and the upper metal shell 2.

[0029] There are two ways to set up the lower metal shell 1 and the upper metal shell 2: the lower metal shell 1 is provided with a connecting through hole 11, and the upper metal shell 2 is provided with a connecting blind hole 21 directly opposite to the connecting through hole 11; or, the upper metal shell 2 is provided with a connecting through hole 11, and the lower metal shell 1 is provided with a connecting blind hole 21 directly opposite to the connecting through hole 11.

[0030] The connecting through hole 11 is located outside the connecting blind hole 21. The grounding screw 3 passes through the connecting through hole 11 and is threadedly connected to the connecting blind hole 21 to lock the lower metal shell 1 and the upper metal shell 2. The end of the screw of the grounding screw 3 is located inside the connecting blind hole 21. The length of the screw of the grounding screw 3 can be shorter than the depth of the connecting blind hole 21.

[0031] This utility model provides a connection blind hole 21 that is threadedly connected to a grounding screw 3. When the grounding screw 3 is connected to the connection blind hole 21, since the end of the connection blind hole 21 is closed, metal shavings 5 ​​will remain inside the connection blind hole 21. (Refer to...) Figure 5 Metal shavings 5 ​​will not be squeezed by the grounding screw 3 onto the circuit board 4 inside the drive power supply, thereby reducing the occurrence of short circuits, explosions, and other adverse phenomena. The blind hole 21 can be pre-taped or not pre-taped, and the metal shavings 5 ​​generated when connected to the grounding screw 3 will not fall onto the circuit board 4.

[0032] In some specific embodiments, reference is made to Figure 1 and Figure 2 The lower metal shell 1 includes a first connecting plate 12, and the upper metal shell 2 includes a second connecting plate 22. The second connecting plate 22 abuts against the inner side of the first connecting plate 12, that is, the upper metal shell 2 is inside the lower metal shell 1. A connecting through hole 11 is provided on the first connecting plate 12, and a connecting blind hole 21 is provided on the second connecting plate 22. A connecting protrusion 23 is provided on the inner side of the second connecting plate 22, and the connecting blind hole 21 is provided in the connecting protrusion 23.

[0033] Furthermore, the connecting protrusion 23 and the second connecting plate 22 are integrally stamped. By configuring a suitable stamping die, the connecting protrusion 23 can be stamped on the second connecting plate 22, which simplifies the structure and processing. In other embodiments, the connecting protrusion 23 can also be separately provided and fixed to the second connecting plate 22 by welding or riveting.

[0034] In another specific embodiment, the lower metal shell 1 includes a first connecting plate 12, and the upper metal shell 2 includes a second connecting plate 22. The first connecting plate 12 abuts against the inner side of the second connecting plate 22, that is, the upper metal shell 2 is on the outer side of the lower metal shell 1. A connecting through hole 11 is provided on the second connecting plate 22, and a connecting blind hole 21 is provided on the first connecting plate 12. A connecting protrusion 23 is provided on the inner side of the first connecting plate 12, and the connecting blind hole 21 is located in the connecting protrusion 23. In this way, when the lower metal shell 1 and the upper metal shell 2 are removed, the metal shavings 5 ​​in the connecting blind hole 21 will not fall into the inner side of the lower metal shell 1. The connecting protrusion 23 can be integrally stamped with the first connecting plate 12.

[0035] In some specific embodiments, a powder coating or paint coating is provided on the surfaces of the lower metal shell 1 and the upper metal shell 2. The powder coating or paint coating can protect the surfaces of the upper metal shell 2 and the lower metal shell 1 and make the surfaces more aesthetically pleasing.

[0036] In some specific embodiments, reference is made to Figure 3 and Figure 5 The connecting through hole 11 is provided with a piercing structure. The piercing structure extends radially to the inner side of the connecting through hole 11. The piercing structure is interference-fitted with the screw of the grounding screw 3. When the piercing structure and the screw of the grounding screw 3 come into contact, they can pierce the powder coating or paint coating.

[0037] Because the surfaces of the lower metal shell 1 and the upper metal shell 2 are covered with powder coating or paint coating, the inner wall of the connecting through hole 11 may also be covered with powder coating or paint coating. Since the powder coating or paint coating is not electrically conductive, there will be no electrical connection when the lower metal shell 1 and the upper metal shell 2 are in contact. When the grounding screw 3 is in contact with the lower metal shell 1 or the upper metal shell 2 where the connecting through hole 11 is located, there may be no electrical connection due to the insulation of the powder coating or paint coating, which will affect the grounding of the upper metal shell 2 and the lower metal shell 1, resulting in a high failure rate. In order to prevent the connecting through hole 11 from being covered with powder coating or paint, paper pieces are inserted into the connecting through hole 11 by hand to cover the inner wall of the connecting through hole 11 before powder coating or paint coating. The paper pieces are then removed during assembly. This allows the connecting through hole 11 to be connected to the grounding screw 3, but it increases labor costs and reduces efficiency.

[0038] Therefore, this utility model has a piercing structure in the connecting through hole 11. When the screw of the grounding screw 3 passes through the connecting through hole 11, it is connected with the piercing structure by interference fit, thereby piercing the powder coating or paint coating inside the connecting through hole 11. This makes it easier to ensure that the grounding screw 3 is in contact with the connecting through hole 11 and conduction. When the grounding screw 3 is connected to the grounding blind hole by thread, it is also connected to the grounding blind hole, so that the lower metal shell 1 and the upper metal shell 2 are connected, which meets the CCC requirement of 100% conduction and grounding, and saves labor costs and improves efficiency.

[0039] Furthermore, the piercing structure includes several protruding teeth 13, the ends of which are interference-fitted with the screw of the grounding screw 3. When the grounding screw 3 is screwed into the connecting through hole 11, the ends of the protruding teeth 13 deform and pierce the powder coating or paint coating. The protruding teeth 13 reduce the difficulty of screwing the grounding screw 3 into the connecting through hole 11. The protruding teeth 13 can be one, two, or more. In this embodiment, four protruding teeth 13 are provided, and the four protruding teeth 13 are evenly distributed circumferentially within the connecting through hole 11. The outer diameter of the screw of the grounding screw 3 should be slightly larger than the diameter of the central space at the end of the protruding teeth 13, so that the screw of the grounding screw 3 can be screwed into the connecting through hole 11 and can also be interference-fitted with the protruding teeth 13.

[0040] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A driving power supply structure, characterized in that, It includes a lower metal shell (1), an upper metal shell (2), and a grounding screw (3); The lower metal shell (1) is provided with a connecting through hole (11), and the upper metal shell (2) is provided with a connecting blind hole (21) directly opposite the connecting through hole (11). Alternatively, the upper metal shell (2) is provided with a connecting through hole (11), and the lower metal shell (1) is provided with a connecting blind hole (21) directly opposite the connecting through hole (11). The connecting through hole (11) is located outside the connecting blind hole (21). The grounding screw (3) passes through the connecting through hole (11) and is threadedly connected to the connecting blind hole (21) to lock the lower metal shell (1) and the upper metal shell (2). The end of the screw of the grounding screw (3) is located inside the connecting blind hole (21).

2. The driving power supply structure as described in claim 1, characterized in that, The lower metal shell (1) includes a first connecting plate (12), and the upper metal shell (2) includes a second connecting plate (22). The second connecting plate (22) abuts against the inner side of the first connecting plate (12). The connecting through hole (11) is provided on the first connecting plate (12), and the connecting blind hole (21) is provided on the second connecting plate (22). The inner side of the second connecting plate (22) is provided with a connecting protrusion (23), and the connecting blind hole (21) is provided in the connecting protrusion (23).

3. The driving power supply structure as described in claim 2, characterized in that, The connecting protrusion (23) and the second connecting plate (22) are integrally stamped.

4. The driving power supply structure according to claim 1, wherein The lower metal shell (1) includes a first connecting plate (12), and the upper metal shell (2) includes a second connecting plate (22). The first connecting plate (12) abuts against the inner side of the second connecting plate (22). The connecting through hole (11) is provided on the second connecting plate (22), and the connecting blind hole (21) is provided on the first connecting plate (12). The inner side of the first connecting plate (12) is provided with a connecting protrusion (23), and the connecting blind hole (21) is provided in the connecting protrusion (23).

5. The drive power supply structure as described in claim 1, characterized in that, The surfaces of the lower metal shell (1) and the upper metal shell (2) are provided with a powder coating or a paint coating.

6. The driving power supply structure according to claim 5, wherein The connecting through hole (11) is provided with a piercing structure. The piercing structure extends radially toward the inner side of the connecting through hole (11). The piercing structure is interference-fitted with the screw of the grounding screw (3). When the piercing structure and the screw of the grounding screw (3) come into contact, the piercing structure can pierce the powder coating or paint coating.

7. The driving power supply structure as described in claim 6, characterized in that, The puncture structure includes several protruding teeth (13), the ends of which are interference-fitted with the screw of the grounding screw (3).

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