DC-DC power supply module welding protection tool

Abstract

The utility model belongs to the technical field of DC-DC power supply module assembly, and discloses a DC-DC power supply module welding protection tool, a DC-DC power supply module comprises a shell, a sealing cover and two rows of pin headers, the welding protection tool is used for protecting the roots of the sealing cover and the two rows of pin headers, and the welding protection tool comprises a movable plate, a fixed plate and two buckle plates, the movable plate and the fixed plate are arranged between the two rows of pin headers side by side, and the movable plate and the fixed plate are connected in a sliding mode through a first connecting part. And in the two buckle plates, one buckle plate and the movable plate clamp and protect one row of pin headers, and the other buckle plate and the fixed plate clamp and protect the other row of pin headers. The welding protection tool has the advantages of being simple in structure, neat, compact and convenient to operate, the sealing cover and the root of the pin header of the DC-DC power module can be protected, and damage caused by losing of the sealing cover and the pin header due to high temperature in the welding process is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of DC-DC power module assembly technology, and relates to a welding protection fixture for DC-DC power modules. Background Technology

[0002] A DC-DC power module is an electronic device used to convert one DC voltage to another. It is widely used in various electronic devices. A DC-DC power module mainly consists of various electronic components, a housing, a cover, and pin headers. The electronic components are integrated into the housing, which is sealed by the cover. The pin headers pass through the cover and connect to an external ribbon cable. The external ribbon cable and pin headers are generally connected by soldering. To prevent the high temperature from burning the base of the pins before soldering, protective fixtures are usually placed on the cover.

[0003] Currently, the existing protective fixture consists of a thin sheet and a slot. The thin sheet and the slot are respectively positioned on both sides of a pin header to clamp and protect the pins. The thin sheet is located between two rows of pins. The following problems exist when installing this fixture:

[0004] 1. Because the edge of the tooling is prone to contact with a single pin header, it is difficult to insert it in one go. Multiple operations are required to achieve a proper fit between the tooling and the pin header. During operation, the pin header is prone to contact with the operator, which may cause varying degrees of injury to the operator and may also damage the pin header.

[0005] 2. When removing the tooling after welding, it is necessary to repeat the operation several times to successfully remove it.

[0006] 3. After the protective fixture is installed, there may still be gaps. During the welding process, there is a possibility of high temperature burning the base of the pins. If the cover is connected to the internal circuit of the DC-DC power module, the chip inside the DC-DC power module may be damaged by a large current, resulting in the scrapping of the DC-DC power module. Utility Model Content

[0007] To address the technical problems of existing protective fixtures, such as difficulty in installation and removal, potential injury to operators or pin headers, and large gaps at the pin header roots that can easily damage the pin headers due to high temperatures, leading to their scrapping, this utility model discloses a welding protective fixture for a DC-DC power module. The DC-DC power module includes a housing with a cover. Two rows of pin headers are fixed on the cover. The welding protective fixture is used to protect the cover and the roots of the two rows of pin headers. It includes a movable plate, a fixed plate, and two fastening plates. The movable plate and the fixed plate are arranged side by side between the two rows of pin headers. The movable plate and the fixed plate are slidably connected via a first connecting part.

[0008] In this configuration, one of the two buckle plates and the movable plate clamp and protect one row of pins, while the other buckle plate and the fixed plate clamp and protect another row of pins.

[0009] Furthermore, the first connecting part includes a slidingly fitted telescopic plate and a fixing groove, the telescopic plate being disposed on the side wall of the movable plate, and the fixing groove being disposed on the side wall of the fixed plate.

[0010] Furthermore, the telescopic plate is an inclined plate that tilts towards the sealing direction, and the fixing groove is an inclined groove that cooperates with the inclined plate.

[0011] Furthermore, the movable plate is provided with a first protrusion, which is used to connect or separate the movable plate from the fixed plate.

[0012] Furthermore, the fixing plate is provided with a second protrusion, which is used to connect or separate the fixing plate from the pins.

[0013] Furthermore, the movable plate, the fixed plate, and the buckle plate have a semi-circular hole on the side that clamps and protects the pin header, which contacts each pin header.

[0014] Furthermore, a second connecting portion is provided between the buckle plate, the movable plate, and the fixed plate, the second connecting portion including a slot and a clip that cooperate with each other.

[0015] Furthermore, a flexible adhesive tape is provided between the buckle plate, the movable plate, and the fixed plate.

[0016] Furthermore, the welding protection fixture also includes a heat insulation layer located on the upper surface of the cover.

[0017] Furthermore, the movable plate, the fixed plate, and the two snap-on plates are all made of flame-retardant asbestos rubber sheets.

[0018] Compared with existing technologies, the beneficial effects of this utility model are as follows: The welding protection fixture of this utility model has the characteristics of simple structure, neat and compact design, and convenient operation. It can protect the cover and pin root of the DC-DC power module, avoiding damage to the cover and pins caused by high temperature during welding. Through the design of the first connecting part, the moving plate and the fixed plate can slide telescopically before being inserted into the buckle plate, avoiding the risk of hand injury from repeated insertion and removal, and providing convenient and quick handling. The semi-circular holes on the moving plate, fixed plate, and buckle plate can partially cover half of the corresponding pin sidewall, individually covering each pin and preventing gaps between adjacent pins that could cause chip breakdown, thus preventing the DC-DC power module from being scrapped. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0020] Figure 1 This is a schematic diagram of the assembly of the DC-DC power module and the welding protection fixture disclosed in the embodiment of this utility model;

[0021] Figure 2 This is a schematic diagram of the welding protection fixture disclosed in an embodiment of the present utility model;

[0022] Figure 3 This is a schematic diagram of the first connection between the movable plate and the fixed plate disclosed in an embodiment of the present utility model;

[0023] Figure 4 This is a schematic diagram of the second connection between the fixing plate and the buckle plate disclosed in an embodiment of the present utility model;

[0024] Among them, 10 is the shell; 20 is the cover; 30 is the pin header; 1 is the moving plate; 11 is the first protrusion; 2 is the fixing plate; 21 is the second protrusion; 3 is the buckle plate; 4 is the first connecting part; 41 is the telescopic plate; 42 is the fixing groove; 5 is the semi-circular hole; and 6 is the second connecting part. Detailed Implementation

[0025] The embodiments of this application will be described in detail below with reference to the accompanying drawings. The advantages and features of this utility model will become clearer with the description, and those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features of the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] In the description of this embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the invention and simplifying the description, and 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. Therefore, they should not be construed as limiting the invention.

[0027] Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more features. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0028] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this disclosure. The illustrations only show the components related to this disclosure and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0029] This embodiment discloses a welding protection fixture for DC-DC power modules. (See also...) Figure 1 As shown, the DC-DC power module includes a housing 10, a cover 20 on the housing 10, and two rows of pin headers 30 fixed on the cover 20. The welding protection fixture is used to protect the cover 20 and the roots of the two rows of pin headers 30.

[0030] like Figure 1 and Figure 2 As shown, the welding protection fixture includes a movable plate 1, a fixed plate 2, and two clamping plates 3. The movable plate 1 and the fixed plate 2 are arranged side by side between two rows of pins 30, and the movable plate 1 and the fixed plate 2 are slidably connected via a first connecting part 4. Of the two clamping plates 3, one clamping plate 3 and the movable plate 1 clamp and protect one row of pins 30, and the other clamping plate 3 and the fixed plate 2 clamp and protect the other row of pins 30.

[0031] Further, see Figure 3As shown, the first connecting part 4 includes a slidingly fitted telescopic plate 41 and a fixing groove 42. The telescopic plate 41 is disposed on the side wall of the moving plate 1, and the fixing groove 42 is disposed on the side wall of the fixing plate 2. When assembling the welding protection fixture between the two rows of pins 30, the fixing plate 2 is first installed so that it engages with the root of each pin 30. Then, the telescopic plate 41 of the moving plate 1 is inserted into the fixing groove 42 of the fixing plate 2, and the moving plate 1 is moved downward to engage with the root of the other row of pins 30. In specific implementation, in order to avoid the moving plate 1 moving downward and causing the telescopic plate 41 to be inserted into the fixing groove 42, resulting in outward pressure on the root of the pin 30 and bending of the pins, after the telescopic plate 41 is fully inserted into the fixing groove 42, the sum of the widths of the fixing plate 2 and the moving plate 1 is less than the distance between the two rows of pins 30. Meanwhile, to prevent the two from separating, after the fixed plate 2 and the movable plate 1 respectively come into contact with each row of pins 30, the distance between the telescopic plate 41 and the inner wall of the fixed groove 42 is less than half the width of the fixed groove 42.

[0032] In specific implementation, the thickness of the telescopic plate 41 is less than the thickness of the fixed plate 2. The fixed plate 2 and the movable plate 1 have the same thickness. The fixed plate 2, the movable plate 1 and the buckle plate 3 have the same length, and their length must be greater than the length of the pin 30. Their length can be the same as or different from the length of the cover 20 according to actual needs.

[0033] Furthermore, in order to facilitate quick docking and connection between the fixed plate 2 and the movable plate 1, in an embodiment where no drawings are shown, the telescopic plate 41 can be an inclined plate that tilts toward the cover 20, and the fixed groove 42 can be an inclined groove that cooperates with the inclined plate.

[0034] Preferably, the telescopic plate 41 on the side wall of the movable plate 1 can be a single plate arranged along the length of the side wall, or multiple plates can be equally spaced on the side wall. The fixing groove 42 machined on the side wall of the fixed plate 2 can be a long groove, or multiple short grooves equally spaced on the side wall. The first connecting part 4 can be any structure that connects the movable plate 1 and the fixed plate 2, and this utility model does not limit it.

[0035] Furthermore, to facilitate the docking operation between the movable plate 1 and the fixed plate 2, see [link to documentation]. Figure 2 and Figure 3As shown, the movable plate 1 is provided with a first protrusion 11, which is used to connect or separate the movable plate 1 from the fixed plate 2. A second protrusion 21 may also be provided on the fixed plate 2, which is used to connect or separate the fixed plate 2 from the pin header 30. Through the arrangement of the first protrusion 11 and / or the second protrusion 21, during operation, when the first protrusion 11 is pulled towards or away from the fixed plate 2 by hand or external force, the first protrusion 11 causes the movable plate 1 to contact or separate from the fixed plate 2. The movable plate 1 then causes the telescopic plate 41 to slide within the fixed plate 2, achieving the purpose of moving away from or partially covering the pin header 30, thus securing the pin header in one go and avoiding injury to the hand.

[0036] Further, see Figure 3 As shown, the movable plate 1, the fixed plate 2, and the buckle plate 3 have semi-circular holes 5 on the side that clamp and protect the pin header 30, which contact each pin header 30. By providing semi-circular holes 5 that match each pin header 30 on the movable plate 1, the fixed plate 2, and the buckle plate 3, a tight contact between the movable plate 1, the fixed plate 2, and the buckle plate 3 and each pin header 30 can be achieved, ensuring that high temperatures during welding will not enter through the gaps in the contact and cause burn damage to the root of the pin header 30. At the same time, the semi-circular holes 5 allow the movable plate 1, the fixed plate 2, and the buckle plate 3 to clamp the pin header 30 in an opening and closing manner, which can completely isolate the root of the pin header from the ribbon cable and prevent it from being burned.

[0037] Further, see Figure 4 As shown, a second connecting part 6 is provided between the buckle plate 3, the movable plate 1, and the fixed plate 2. The second connecting part 6 includes a slot and a clip that cooperate with each other. By setting the second connecting part 6, the buckle plate 3 can be accurately aligned and connected with the movable plate 1 and the fixed plate 2.

[0038] Furthermore, a flexible adhesive tape is provided between the buckle plate 3 and the moving plate 1 and the fixed plate 2. In specific implementation, the flexible adhesive tape can be any structure such as Velcro, flexible buckle, or strap. The flexible adhesive tape can fix the buckle plate 3 to the moving plate 1 and the fixed plate 2, preventing it from separating from the pin header 30 and ensuring that it can clamp and protect each row of pin header 30.

[0039] Furthermore, the welding protection fixture also includes a heat insulation layer located on the upper surface of the cover 20.

[0040] Furthermore, the movable plate 1, the fixed plate 2, and the two buckle plates 3 are all made of flame-retardant asbestos rubber sheets. Metal plates or PCB boards can also be used, which makes the welding protection fixture have the characteristics of insulation and high temperature resistance, preventing current from passing through and damaging the chip, making it safe and reliable.

[0041] This utility model's welding protection fixture features a simple, neat, and compact structure, and is easy to operate. It can protect the cover and pin roots of the DC-DC power module, preventing damage to the cover and pins due to high temperatures during welding. The design of the first connecting part allows for a telescopic sliding mechanism between the moving plate and the fixed plate before insertion with the snap-on plate, avoiding repeated insertions that could cause hand injury. It is also convenient and quick to handle. The semi-circular holes on the moving plate, fixed plate, and snap-on plate partially cover half of the corresponding pin's sidewall, individually protecting each pin 30 and preventing gaps between adjacent pins that could cause chip damage, thus preventing the DC-DC power module from becoming unusable.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0043] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A welding protection fixture for a DC-DC power module, the DC-DC power module comprising a housing (10), a cover (20) provided on the housing (10), and two rows of pin headers (30) fixed on the cover (20), characterized in that, The welding protection fixture is set on the surface of the cover (20) and includes a movable plate (1), a fixed plate (2) and two buckle plates (3). The movable plate (1) and the fixed plate (2) are arranged side by side between the two rows of pins (30). The movable plate (1) and the fixed plate (2) are slidably connected via the first connecting part (4). Of the two buckle plates (3), one buckle plate (3) and the moving plate (1) clamp and protect one row of pins (30), and the other buckle plate (3) and the fixing plate (2) clamp and protect another row of pins (30).

2. The welding protection fixture for DC-DC power modules according to claim 1, characterized in that, The first connecting part (4) includes a slidingly fitted telescopic plate (41) and a fixing groove (42). The telescopic plate (41) is disposed on the side wall of the movable plate (1), and the fixing groove (42) is disposed on the side wall of the fixed plate (2).

3. The welding protection fixture for DC-DC power modules according to claim 2, characterized in that, The telescopic plate (41) is an inclined plate that is inclined toward the cover (20), and the fixing groove (42) is an inclined groove that cooperates with the inclined plate.

4. The welding protection fixture for DC-DC power modules according to claim 2 or 3, characterized in that, The movable plate (1) is provided with a first protrusion (11), which is used to connect or separate the movable plate (1) from the fixed plate (2).

5. The welding protection fixture for DC-DC power modules according to claim 2 or 3, characterized in that, The fixing plate (2) is provided with a second protrusion (21), which is used to connect or separate the fixing plate (2) from the pin header (30).

6. The welding protection fixture for DC-DC power modules according to claim 1, characterized in that, The movable plate (1), the fixed plate (2), and the buckle plate (3) have a semi-circular hole (5) on one side that clamps and protects the pins (30) and contacts each pin (30).

7. The welding protection fixture for DC-DC power modules according to claim 1, characterized in that, A second connecting part (6) is provided between the buckle plate (3), the movable plate (1), and the fixed plate (2). The second connecting part (6) includes a slot and a clip that cooperate with each other.

8. The welding protection fixture for DC-DC power modules according to claim 1 or 7, characterized in that, A flexible adhesive tape is also provided between the buckle plate (3), the movable plate (1), and the fixed plate (2).

9. The welding protection fixture for DC-DC power modules according to claim 1, characterized in that, The welding protection fixture also includes a heat insulation layer located on the upper surface of the cover (20).

10. The welding protection fixture for DC-DC power modules according to claim 1, characterized in that, The movable plate (1), the fixed plate (2), and the two snap-on plates (3) are all flame-retardant asbestos rubber sheets.

Images