A driver welding jig

Abstract

The utility model relates to circuit board welding technical field, concretely is a kind of driver welding fixture, for the welding of circuit board assembly, and circuit board assembly includes first circuit board, second circuit board, third circuit board and fourth circuit board, and welding fixture includes jig base, first circuit board, second circuit board, third circuit board and fourth circuit board are placed in jig base one by one layer by layer, cover plate assembly is movably arranged on jig base, and cover plate assembly is used to shield electrical element of second circuit board, third circuit board and fourth circuit board welding surface one by one. The utility model is set up the cover plate of different height on jig base, and the circuit board to be welded is covered one by one by the different height, realizes the shielding of electrical element, avoids when using tin wire welding, tin bead splashes on electrical element and influences the function of circuit board.

Description

Technical Field

[0001] This utility model relates to the field of circuit board welding technology, specifically to a driver welding fixture. Background Technology

[0002] As an electronic device capable of receiving control signals and driving related actuators to perform actions according to signal instructions, the driver is widely used in many fields such as automation control and intelligent manufacturing.

[0003] In the existing technology, during the assembly of the driver, multiple circuit boards need to be soldered together to form the driver as a whole. First, the circuit boards to be connected need to be stacked vertically together, so that the solder holes on the circuit boards are aligned with the pin headers. After the pin headers pass through the solder holes, a high-temperature soldering tool is used to melt the solder wire, so that the molten solder fills the gap between the pin headers and the solder holes. After the molten solder cools and solidifies, the connection and fixation of adjacent circuit boards can be achieved.

[0004] However, during the soldering process, the solder wire melts at high temperatures, easily causing solder balls to splatter. Since there are numerous precision electronic components distributed around the soldering location on the circuit board, these splattered solder balls can easily adhere to the pins or contacts of these components, potentially causing short circuits and affecting product yield and safety. Therefore, this invention proposes a driver soldering fixture to effectively solve these problems. Utility Model Content

[0005] The purpose of this invention is to provide a driver welding fixture to solve the problems mentioned in the background art.

[0006] This utility model is achieved through the following technical solution: a driver welding fixture for welding circuit board assemblies, the circuit board assembly including a first circuit board, a second circuit board, a third circuit board and a fourth circuit board, the welding fixture including a fixture base, the first circuit board, the second circuit board, the third circuit board and the fourth circuit board being stacked one by one on the fixture base, a cover plate assembly being movably provided on the fixture base, the cover plate assembly being used to shield the electrical components on the welding surfaces of the second circuit board, the third circuit board and the fourth circuit board one by one.

[0007] Optionally, the fixture base has a square plate structure, and four positioning posts protrude upward from the top surface of the fixture base. The four positioning posts are symmetrically distributed, and four positioning holes corresponding to the four positioning posts are opened on the first circuit board.

[0008] Optionally, the cover plate assembly includes a first cover plate, a second cover plate, and a third cover plate. The first cover plate can cover the top surface of the second circuit board to shield electrical components; the second cover plate can cover the top surface of the third circuit board to shield electrical components; and the third cover plate can cover the top surface of the fourth circuit board to shield electrical components.

[0009] Optionally, the first cover plate, the second cover plate, and the third cover plate are all provided with clearance openings, which are used to expose the welding points.

[0010] Optionally, the top surface of the fixture base protrudes upward to form a first mounting plate, a second mounting plate, and a third mounting plate, the first mounting plate, the second mounting plate, and the third mounting plate being located at three sides of the top surface of the fixture base.

[0011] Optionally, the first cover plate is movably connected to the first mounting plate, the second cover plate is movably connected to the second mounting plate, and the third cover plate is movably connected to the third mounting plate, with the heights of the first cover plate, the second cover plate, and the third cover plate increasing sequentially.

[0012] Optionally, the first cover plate is connected to the top surface of the first mounting plate by a hinge, the second cover plate is connected to the top surface of the second mounting plate by a hinge, and the third cover plate is connected to the top surface of the third mounting plate by a hinge.

[0013] Optionally, the first cover plate, the second cover plate, and the third cover plate are detachably connected to the first mounting plate, the second mounting plate, and the third mounting plate, respectively, and the first cover plate, the second cover plate, and the third cover plate are capable of sliding vertically on the first mounting plate, the second mounting plate, and the third mounting plate, respectively.

[0014] Compared with the prior art, the present invention provides a driver welding fixture, which has the following beneficial effects:

[0015] 1. This utility model provides a solution by setting cover plates of different heights on the fixture base. By covering the circuit boards to be soldered one by one according to the different heights, the electrical components are shielded, thus preventing solder balls from splashing onto the electrical components and affecting the function of the circuit boards when soldering with solder wire.

[0016] 2. In this utility model, the cover plate can not only be connected by hinge rotation, but also slide vertically on the mounting plate, so that the cover plate can be installed and removed vertically. This ensures that the opening process of the cover plate is not hindered by the height of the wiring terminals, and that the cover plate can adapt to the soldering work of more specifications of circuit boards. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the circuit board assembly structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the fixture base and cover plate assembly structure according to Embodiment 1 of this utility model;

[0020] Figure 4 This is a schematic diagram of the fixture base and cover plate assembly structure in Embodiment 2 of this utility model;

[0021] Figure 5 This is a top sectional view of the jig base of this utility model;

[0022] Figure 6 This is a top sectional view of the mounting plate of this utility model.

[0023] In the diagram: 1. Circuit board assembly; 101. First circuit board; 102. Second circuit board; 103. Third circuit board; 104. Fourth circuit board; 2. Fixture base; 201. Positioning post; 202. First mounting plate; 203. Second mounting plate; 204. Third mounting plate; 3. Cover plate assembly; 301. First cover plate; 302. Second cover plate; 303. Third cover plate; 304. Clearance opening; 4. Limiting rod; 5. Spring. Detailed Implementation

[0024] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1: Please refer to Figure 1 - Figure 3 A driver welding fixture is used for welding a circuit board assembly 1, the circuit board assembly 1 including a first circuit board 101, a second circuit board 102, a third circuit board 103 and a fourth circuit board 104, the welding fixture including a fixture base 2, the first circuit board 101, the second circuit board 102, the third circuit board 103 and the fourth circuit board 104 are stacked one by one on the fixture base 2.

[0026] The fixture base 2 has a square plate-like structure. Four positioning posts 201 protrude upwards from the top surface of the fixture base 2 and are symmetrically distributed. The first circuit board 101 has four positioning holes that correspond one-to-one with the four positioning posts 201. Therefore, the positioning posts 201 ensure that the first circuit board 101 is placed accurately on the fixture base 2, preventing deviations in subsequent soldering points.

[0027] On the other hand, in this embodiment, four positioning posts 201 are respectively located on the top surface of the fixture base 2 near the four ends to position the four ends of the first circuit board 101 and prevent the first circuit board 101 from shaking in the horizontal direction.

[0028] Furthermore, a cover plate assembly 3 is movably provided on the fixture base 2. The cover plate assembly 3 is used to shield the electrical components on the soldering surfaces of the second circuit board 102, the third circuit board 103, and the fourth circuit board 104 one by one. This prevents high-temperature solder balls from splashing onto the electrical components on the circuit boards when multiple circuit boards are being soldered, thereby avoiding damage to the circuit board functions and affecting the use of the driver.

[0029] Specifically, the cover plate assembly 3 includes a first cover plate 301, a second cover plate 302, and a third cover plate 303. The first cover plate 301 can cover the top surface of the second circuit board 102 to shield electrical components; the second cover plate 302 can cover the top surface of the third circuit board 103 to shield electrical components; and the third cover plate 303 can cover the top surface of the fourth circuit board 104 to shield electrical components. This allows workers to cover different circuit boards with different cover plates when soldering the circuit boards in the circuit board assembly 1, with each cover plate corresponding to a different circuit board, thus avoiding errors in the stacking order of the circuit boards.

[0030] The first cover plate 301, the second cover plate 302, and the third cover plate 303 are all provided with relief openings 304, which are used to expose the soldering points. The shape and position of the relief openings 304 on each cover plate are different, and the relief openings 304 on different cover plates correspond to the soldering points on different circuit boards, so that the workers can solder the soldering pins to the circuit board together.

[0031] Specifically, after the first circuit board 101 is placed on the fixture base 2, the second circuit board 102 is placed on top of the first circuit board 101. At this time, the soldering pins on the first circuit board 101 pass through the soldering holes on the second circuit board 102 and extend above the second circuit board 102. After the first cover plate 301 covers the top surface of the second circuit board 102, the soldering pins are located in the clearance openings 304 on the first cover plate 301. The other areas of the first cover plate 301 will shield and protect the electrical components on the second circuit board 102. The third circuit board 103 and the fourth circuit board 104 will also be shielded and protected by the second cover plate 302 and the third cover plate 303 respectively during soldering.

[0032] Furthermore, a first mounting plate 202, a second mounting plate 203, and a third mounting plate 204 protrude upwards from the top surface of the fixture base 2, respectively located on three sides of the top surface of the fixture base 2. Therefore, the fixture base 2, the first mounting plate 202, the second mounting plate 203, and the third mounting plate 204 cooperate to form a groove structure with an opening on one side, allowing the circuit board to be assembled and disassembled not only vertically but also from the side opening, making it more convenient to use and reducing the overall weight of the device for easier transportation.

[0033] In this embodiment, the first cover plate 301 is movably connected to the first mounting plate 202, the second cover plate 302 is movably connected to the second mounting plate 203, and the third cover plate 303 is movably connected to the third mounting plate 204. The heights of the first cover plate 301, the second cover plate 302, and the third cover plate 303 increase sequentially, so that the first cover plate 301, the second cover plate 302, and the third cover plate 303 can cover and protect circuit boards at different heights.

[0034] The height of the first mounting plate 202 is 20-25mm, the height of the second mounting plate 203 is 35-40mm, and the height of the third mounting plate 204 is 50-55mm. The first cover plate 301, the second cover plate 302, and the third cover plate 303 are respectively disposed on the top surface of the first mounting plate 202, the second mounting plate 203, and the third mounting plate 204, so that the space under the cover plate can be used to place the corresponding circuit board.

[0035] Furthermore, the first cover plate 301 is connected to the top surface of the first mounting plate 202 by a hinge, the second cover plate 302 is connected to the top surface of the second mounting plate 203 by a hinge, and the third cover plate 303 is connected to the top surface of the third mounting plate 204 by a hinge.

[0036] The three hinges are located on the top surface of the corresponding mounting plate near the outer side. The first cover plate 301, the second cover plate 302, and the third cover plate 303 can rotate around the corresponding hinge axis. When the first cover plate 301, the second cover plate 302, and the third cover plate 303 cover the second circuit board 102, the third circuit board 103, and the fourth circuit board 104 respectively, the first cover plate 301, the second cover plate 302, and the third cover plate 303 are in a horizontal distribution state. The bottom surface of the first cover plate 301, the second cover plate 302, and the third cover plate 303 near the hinges respectively abuts against the top surface of the first mounting plate 202, the second mounting plate 203, and the third mounting plate 204, so that the first cover plate 301, the second cover plate 302, and the third cover plate 303 always remain in a horizontal state, avoiding solder balls from splashing onto the electrical components of the circuit board.

[0037] Example 2: Please refer to Figure 4- Figure 6 This application also provides another embodiment, which differs from Embodiment 1 in that: the first cover plate 301, the second cover plate 302, and the third cover plate 303 are detachably connected to the first mounting plate 202, the second mounting plate 203, and the third mounting plate 204, respectively. The first cover plate 301, the second cover plate 302, and the third cover plate 303 can slide vertically on the first mounting plate 202, the second mounting plate 203, and the third mounting plate 204, respectively. This allows the first cover plate 301, the second cover plate 302, and the third cover plate 303 to move vertically to achieve disassembly and assembly operations, thereby avoiding obstruction of the opening of the cover plates by the wiring terminals on the top surface of the fourth circuit board 104.

[0038] Specifically, each of the three mounting plates has a notch on its top surface for inserting a corresponding cover plate. The cover plate can be inserted into the notch for installation, thus covering and protecting the circuit board. Similarly, to open the cover plate, simply pull it vertically out of the notch to open the cover plate and remove the circuit board assembly 1 from the fixture base 2. This ensures that the opening process of the cover plate is not affected by the height of the terminals on the fourth circuit board 104, thereby enabling the device to be used for soldering protection of circuit boards of more specifications.

[0039] like Figure 6 As shown, taking the first mounting plate 202 and the first cover plate 301 as examples, two limiting rods 4 are provided in the portion of the first cover plate 301 embedded in the notch of the first mounting plate 202. The two limiting rods 4 are symmetrically distributed and slide relative to each other along the length of the first mounting plate 202. The opposing ends of the two limiting rods 4 are elastically connected by a spring 5. In the natural state, the spring 5 is in a compressed state and can apply a spring force to the two limiting rods 4 to move them away from each other. The opposing ends of the two limiting rods 4 extend out of the outer side of the first cover plate 301 and can be inserted into the side wall of the notch in the first mounting plate 202 to achieve fixed installation of the first cover plate 301. Figure 4 As shown, the top surfaces of the two limiting rods 4 protrude upwards to form protrusions. The two protrusions extend out of the top surface of the first cover plate 301, and the top surface of the first cover plate 301 is provided with a sliding groove for the protrusions to slide in the position opposite to the limiting rods 4, so that the workers can control the two limiting rods 4 to move closer to each other through the two protrusions to realize the disassembly of the first cover plate 301.

[0040] The working principle and usage process of this utility model are as follows: First, when soldering the circuit boards, the first circuit board 101 is placed on the top surface of the fixture base 2 by positioning pins 201. Then, the second circuit board 102 is placed on the top surface of the first circuit board 101, and the soldering pins on the top surface of the first circuit board 101 are aligned with the soldering holes on the second circuit board 102, allowing the pins to pass through the soldering holes. Subsequently, the first cover plate 301 is horizontally placed over the top surface of the second circuit board 102. At this time, the opening 304 on the first cover plate 301 allows the soldering pins on the first circuit board 101 to be exposed, while the remaining area shields the electrical components on the second circuit board 102. The operator then uses solder wire to solder the first circuit board 101 and the second circuit board 102 together.

[0041] Then, open the first cover plate 301, place the third circuit board 103 on the top surface of the second circuit board 102, so that the soldering pins on the top surface of the second circuit board 102 pass through the soldering holes on the third circuit board 103, and then cover the top surface of the third circuit board 103 with the second cover plate 302, and solder the second circuit board 102 and the third circuit board 103 together with solder wire.

[0042] Finally, open the second cover plate 302, place the fourth circuit board 104 on top of the third circuit board 103, so that the soldering pins on the top surface of the third circuit board 103 pass through the soldering holes on the fourth circuit board 104, and then cover the top surface of the fourth circuit board 104 with the third cover plate 303. Solder the third circuit board 103 and the fourth circuit board 104 together with solder wire. After completing the soldering of all circuit boards, open the third cover plate 303 to complete the soldering and assembly of the driver.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A driver soldering fixture for soldering a circuit board assembly (1), the circuit board assembly (1) comprising a first circuit board (101), a second circuit board (102), a third circuit board (103), and a fourth circuit board (104), characterized in that: The welding fixture includes a fixture base (2), on which the first circuit board (101), the second circuit board (102), the third circuit board (103) and the fourth circuit board (104) are stacked one by one. A cover plate assembly (3) is movably provided on the fixture base (2). The cover plate assembly (3) is used to shield the electrical components on the welding surfaces of the second circuit board (102), the third circuit board (103) and the fourth circuit board (104) one by one.

2. The driver welding fixture according to claim 1, characterized in that: The fixture base (2) has a square plate structure. The top surface of the fixture base (2) protrudes upward to form four positioning posts (201). The four positioning posts (201) are symmetrically distributed. The first circuit board (101) has four positioning holes that correspond one-to-one with the four positioning posts (201).

3. The driver welding fixture according to claim 2, characterized in that: The cover plate assembly (3) includes a first cover plate (301), a second cover plate (302) and a third cover plate (303). The first cover plate (301) can cover the top surface of the second circuit board (102) to shield electrical components; the second cover plate (302) can cover the top surface of the third circuit board (103) to shield electrical components; and the third cover plate (303) can cover the top surface of the fourth circuit board (104) to shield electrical components.

4. The driver welding fixture according to claim 3, characterized in that: The first cover plate (301), the second cover plate (302) and the third cover plate (303) are all provided with a clearance opening (304), which is used to expose the welding point.

5. The driver welding fixture according to claim 3, characterized in that: The top surface of the fixture base (2) protrudes upward to form a first mounting plate (202), a second mounting plate (203) and a third mounting plate (204), which are respectively located at three sides of the top surface of the fixture base (2).

6. The driver welding fixture according to claim 5, characterized in that: The first cover plate (301) is movably connected to the first mounting plate (202), the second cover plate (302) is movably connected to the second mounting plate (203), and the third cover plate (303) is movably connected to the third mounting plate (204). The heights of the first cover plate (301), the second cover plate (302), and the third cover plate (303) increase sequentially.

7. A driver welding fixture according to claim 6, characterized in that: The first cover plate (301) is connected to the top surface of the first mounting plate (202) by a hinge, the second cover plate (302) is connected to the top surface of the second mounting plate (203) by a hinge, and the third cover plate (303) is connected to the top surface of the third mounting plate (204) by a hinge.

8. A driver welding fixture according to claim 6, characterized in that: The first cover plate (301), the second cover plate (302) and the third cover plate (303) are detachably connected to the first mounting plate (202), the second mounting plate (203) and the third mounting plate (204) respectively, and the first cover plate (301), the second cover plate (302) and the third cover plate (303) can slide vertically on the first mounting plate (202), the second mounting plate (203) and the third mounting plate (204) respectively.

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