Tool for assembling cooling fins of charging power supply

Abstract

The utility model relates to a tool for assembling a cooling fin of a charging power supply, which belongs to the field of electronic engineering or electrical engineering and comprises a base, a PCBA (printed circuit board assembly) supporting column and a cooling fin positioning clamp, the cooling fin positioning clamp is horizontally arranged on the base and comprises an L-shaped limiting sheet and a rectangular cooling fin tolerance supporting block, and the supporting column is vertically arranged on the base. During use, the cooling fins are placed on the cooling fin tolerance supporting blocks, the end faces and the side faces of the cooling fins are in contact fit with the inner sides of the short edges and the inner sides of the long edges of the limiting stoppers respectively, and therefore the cooling fins are positioned on the cooling fin tolerance supporting blocks; the PCBA board welded with the components faces downwards and is placed on the two positioning clamps, and the cooling fins are fastened on the PCBA board through screws by using an electric screwdriver. By using the tool, accurate positioning and stable installation of the cooling fins can be ensured, the production speed of workers is increased, remarkable improvement and higher efficiency are brought to the production process, the yield and quality of products are improved, and meanwhile safety risks are reduced.

Description

Technical Field

[0001] The utility model belongs to the field of charging power supply assembly and manufacturing, and particularly relates to a tool for assembling a charging power supply heat sink. Background Art

[0002] At present, the charging power supply used for charging large-capacity lead-acid batteries has an input voltage of 12V, 24V, and 36V. This type of charging power supply has the characteristics of high power, small size, light weight, high charging efficiency, stable charging, strong shock resistance, high quality and durability. However, it was found during the work process that the components of these charging power supplies tend to generate high heat, which may cause the components to burn out after long-term use. Therefore, it is necessary to install a heat sink on the PCBA board to ensure the stable operation of the charging power supply. At present, there are some problems when assembling the heat sink: First, there is no device to fix the heat sink and support the PCBA board, and the workers can only fix it with their hands, so the heat sink and PCBA board are prone to move and poor positioning. The movement of the heat sink can easily cause the heat sink to scratch the components, which is also unsafe;

[0003] Secondly, it is difficult to align the vias on the PCBA board with the vias on the heat sink. It is easy to screw the screws crooked when assembling the heat sink, and it will also damage the components on the PCBA board, causing quality problems in the product. Summary of the invention

[0004] In view of the current shortcomings of slow assembly speed, low efficiency and low output of workers, in order to ensure the output and quality of products, it is necessary to provide an efficient and stable tooling to meet the needs of production while also reducing safety risks.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a tool for assembling a charging power supply heat sink, so as to facilitate the positioning and assembly of the charging power supply heat sink, speed up the production speed of workers, and ensure the output and quality of products.

[0006] The technical solution adopted by the utility model is: a tooling for assembling a charging power supply heat sink, comprising: a base, a PCBA board support column and a heat sink positioning fixture, the heat sink positioning fixture is horizontally arranged on the base, including an L-shaped limit stopper and a rectangular heat sink tolerance support block, and the support column is vertically arranged on the base.

[0007] The beneficial effects of the utility model are:

[0008] The beneficial effects of the utility model are reflected in the following aspects: through the structural design of the heat sink tolerance support block and the limit baffle, the accurate positioning and stable installation of the heat sink are ensured, and the problems of movement and scratching of components are effectively prevented; at the same time, the use of tooling can speed up the production speed of workers, bring significant improvements and higher efficiency to the production process, improve product output and quality, and reduce safety risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0010] Figure 2 This is a three-dimensional exploded schematic diagram of the utility model;

[0011] Figure 3 This is a top plan view of the utility model;

[0012] Figure 4 This is a schematic diagram of the use state of the utility model;

[0013] Figure 5 This is a schematic diagram of the PCBA board after assembly.

[0014] In the figure: 1. Base; 1-1. Strip hole; 2. Support column; 2-1. Shaft neck; 2-2. Spindle; 3. Heat sink positioning fixture; 3-1. L-shaped limit baffle; 3-1-1. Short block limit baffle; 3-1-2. Long block limit baffle; 3-2. Rectangular heat sink tolerance support block; 3-2-1. Heat sink tolerance support short block; 3-2-2. Heat sink tolerance support long block; 4. Short heat sink; 5. Long heat sink; 6. PCBA board; 6-1. Grounding hole; 6-2. High components. DETAILED DESCRIPTION

[0015] like Figure 1-5 The present invention shows a tool for assembling a charging power supply heat sink, comprising a base 1, a PCBA board support column 2, and a plurality of heat sink positioning fixtures 3.

[0016] The base 1 is a rectangular plate, and a plurality of support columns 2 are vertically arranged on the plate surface, usually two of them are arranged at intervals according to the position of the grounding hole 6-1 on the PCBA board 6 to be assembled; it is used to position and support the PCBA board 6; the support column 2 is cylindrical, and the top is processed into a stepped shaft, the outer diameter of the top journal 2-1 is smaller than the aperture of the grounding hole 6-1 of the PCBA board 6 to be assembled, the outer diameter of the main shaft 2-2 is larger than the aperture of the grounding hole 6-1, and the height of the main shaft 2-2 is the same as the height of the L-shaped limit stopper 3-1; the base 1 is also provided with a strip hole 1-1 for accommodating high components 6-2 that are higher than the heat sink;

[0017] The heat sink positioning fixture 3 is set on the base 1, including an L-shaped limit baffle 3-1 and a rectangular heat sink tolerance support block 3-2. The size and installation method of the L-shaped limit baffle and the rectangular heat sink tolerance support block are different according to the number, size and position of the heat sinks to be assembled on the PCBA board 6.

[0018] Taking the positioning fixtures for setting two groups of heat sinks of different lengths as an example, the two groups of positioning fixtures 3 are respectively arranged at both ends of the base 1 plate surface, one group includes a short block limit baffle 3-1-1 and a heat sink tolerance support short block 3-2-1, and the other group includes a long block limit baffle 3-1-2 and a heat sink tolerance support long block 3-2-2. The heat sink tolerance support short block 3-2-1 and the heat sink tolerance support long block 3-2-2 are respectively arranged horizontally. The short side surface of the heat sink tolerance supporting short block 3-2-1 contacts and cooperates with the inner side of the short side of the short block limiting baffle 3-1-1, and a certain distance is maintained between the long side surface of the heat sink tolerance supporting short block 3-2-1 and the inner side of the long side of the short block limiting baffle 3-1-1; the short side surface of the heat sink tolerance supporting long block 3-2-2 contacts and cooperates with the inner side of the long side of the long block limiting baffle 3-1-2, and a certain distance is maintained between the long side surface of the heat sink tolerance supporting long block 3-2-2 and the inner side of the horizontal side of the long block limiting baffle 3-1-2.

[0019] How to use, such as Figure 3-4 , place the short heat sink 4 on the heat sink tolerance support short block 3-2-1, one end face and one side face of the short heat sink 4 are respectively in contact with the short side and the inner side of the long side of an L-shaped short block limit stopper 3-1-1, so that the short heat sink 4 is positioned on the heat sink tolerance support short block 3-2-1; place the long heat sink 5 on the heat sink tolerance support long block 3-2-2, one end face and one side face of the long heat sink 5 are respectively in contact with the long side and the inner side of the short side of another L-shaped long block limit stopper 3-1-2, so that the long heat sink 5 is positioned on the heat sink tolerance support long block 3-2-2;

[0020] Place the PCBA board 6 with components welded thereon facing downward on two positioning fixtures 3, place a tall component 6-2 on the PCBA board 6 that is higher than the heat sink in the strip hole 1-1, and place two grounding holes 6-1 on the PCBA board 6 at the fixed ends of two PCBA board support columns 2, respectively. The PCBA board 6 is in a horizontal state and positioned on the fixture. At this time, the via holes of the short heat sink 4 and the long heat sink 5 correspond to the via holes of the PCBA board 6, respectively. Use an electric screwdriver to fasten the short heat sink 4 and the long heat sink 5 to the PCBA board 6 with screws.

Claims

1. A tool for assembling a charging power supply heat sink, characterized in that: The invention comprises a base (1), a PCBA board support column (2) and a heat sink positioning fixture (3), wherein the heat sink positioning fixture (3) is horizontally arranged on the base (1) and comprises an L-shaped limit stopper (3-1) and a rectangular heat sink tolerance support block (3-2), and the support column (2) is vertically arranged on the base (1).

2. The tooling for assembling a charging power supply heat sink according to claim 1, characterized in that: The heat sink positioning fixture (3) is provided in two groups, one group comprising a short block limiting baffle (3-1-1) and a heat sink tolerance support short block (3-2-1), the short side surface of the heat sink tolerance support short block (3-2-1) contacts and cooperates with the inner side of the short side of the short block limiting baffle (3-1-1), and a certain distance is maintained between the long side surface of the heat sink tolerance support short block (3-2-1) and the inner side of the long side of the short block limiting baffle (3-1-1); the other group of positioning fixtures (3) comprises a long block limiting baffle (3-1-2) and a heat sink tolerance support long block (3-2-2), the short side surface of the heat sink tolerance support long block (3-2-2) contacts and cooperates with the inner side of the long side of the long block limiting baffle (3-1-2), and a certain distance is maintained between the long side surface of the heat sink tolerance support long block (3-2-2) and the inner side of the short side of the long block limiting baffle (3-1-2).

3. The tooling for assembling a charging power supply heat sink according to claim 2, characterized in that: The support columns (2) are provided in two numbers and are spaced apart according to the positions of the grounding holes (6-1) on the PCBA board (6) to be assembled; and are used to position and support the PCBA board (6); the support column (2) is cylindrical, with a stepped shaft provided on the top; the outer diameter of the shaft neck (2-1) is smaller than the hole diameter of the grounding hole (6-1) of the PCBA board (6) to be assembled; the outer diameter of the main shaft (2-2) is larger than the hole diameter of the grounding hole (6-1); and the height of the main shaft (2-2) is the same as the height of the L-shaped limit stopper (3-1).

4. The tooling for assembling a charging power supply heat sink according to claim 2, characterized in that: The base (1) is also provided with a strip hole (1-1), which is arranged between two sets of positioning fixtures (3) and is used to place high components (6-2) that are higher than the heat sink.

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