Cooling fan circuit board fixing jig and tin soldering device

Abstract

The invention relates to the field of tin soldering jigs, and provides a cooling fan circuit board fixing jig and a tin soldering device.The cooling fan circuit board fixing jig comprises a top plate, a bottom plate, a front fixing piece, a rear fixing piece and a hinge frame; the top plate is fixedly mounted on the hinge frame, and a plurality of welding holes for providing soldering tin are formed in the top plate; the bottom plate is hinged to the hinge frame; the front fixing piece is installed on the top face of the top plate, the rear fixing piece is installed on the side, away from the top plate, of the hinge frame, and a conduction groove is formed in the bottom plate. The circuit board is placed on the top plate, the bottom plate rotates along the hinge frame, the bottom plate and the rear fixing piece are staggered through the conduction groove, the bottom plate covers the circuit board to provide compression, the top plate and the bottom plate are turned over, and the circuit board is fixed to the bottom plate through the hinge frame. And the front fixing piece and the rear fixing piece are supported towards a placing surface required by welding. The method has the effect of improving the stability of the circuit board during tin soldering.

Description

Technical Field

[0001] This application relates to the field of soldering fixtures, and in particular to a heat dissipation fan circuit board fixing fixture and soldering device. Background Technology

[0002] Cooling fans have a wide range of applications, including air cooling for household appliances and computers. They are used in circuit boards for circuit control. The connection points of capacitors, resistors, wires and other components on the circuit board need to be soldered to provide protection and secure connection. Some circuit boards need to be manually positioned during the soldering process. The fixed circuit board is prone to slippage, which can cause deviations or errors in the soldering points and affect the yield. Summary of the Invention

[0003] To address the aforementioned issues, this application provides a heat dissipation fan circuit board fixing fixture and a soldering device.

[0004] The technical solution provided in this application for a cooling fan circuit board fixing fixture and soldering device is as follows: A fixture for fixing a cooling fan circuit board includes a top plate, a bottom plate, a front fixing member, a rear fixing member, and a hinge frame. The top plate is fixedly installed on the hinge frame, and the top plate has a plurality of soldering holes for providing solder. The bottom plate is hinged to the hinge frame. The front fixing member is installed on the top surface of the top plate, and the rear fixing member is installed on the side of the hinge frame away from the top plate. The bottom plate has a through groove. The circuit board is placed on the top plate, and the bottom plate is rotated along the hinge frame. The bottom plate is offset from the rear fixing member through the through groove, so that the bottom plate covers the circuit board and provides pressure. The top plate and the bottom plate are flipped so that the front fixing member and the rear fixing member provide support towards the placement surface of the soldering device required for soldering.

[0005] By adopting the above technical solution, the front fixing member is located on the top surface of the top plate and covers the top plate, while the rear fixing member is located at the bottom of the hinge frame. Both are placed on the soldering device placement surface required for soldering, thereby covering the bottom plate. This prevents the top plate and bottom plate from being lifted after being flipped, resulting in a stable clamping effect on the circuit board located between the top plate and the bottom plate, thereby improving the stability during soldering.

[0006] Optionally, the top plate is divided into a first clamping plate and a second clamping plate, with a spacer layer between the first clamping plate and the second clamping plate, and the spacer layer having a hole fitting.

[0007] By adopting the above technical solution, the hole adapter is used to provide adaptation for soldering holes. For example, some circuit boards require different soldering positions, so the hole adapter can be used to cover some unnecessary soldering holes or partially obscure the size of the soldering holes, thereby achieving the function of adapting to different soldering points on different soldering boards.

[0008] Optionally, the hole adapter includes an adapter frame, a pivot shaft, and an adapter plate; a pivot hole is provided at the corner of the top plate, and the pivot shaft is pivotally connected to the pivot hole; the adapter frame is mounted on the pivot shaft, and a slot is provided on the adapter frame; the adapter plate is slidably connected to the slot, and an adapter hole is provided on the adapter plate.

[0009] By adopting the above technical solution, after the adapter board is inserted into the slot, it can rotate with the adapter frame and pivot into the interlayer and cover the solder holes. The remaining adapter holes are the solder points, thereby enabling the determination of the solder points required for different circuit boards.

[0010] Optionally, the adapter plate is provided in several pieces, and the size of the adapter hole on different adapter plates is different.

[0011] By adopting the above technical solution, the solder points of different circuit boards can be adapted to different circuit boards by replacing different types of adapter boards, thus avoiding the situation of over-soldering or under-soldering.

[0012] Optionally, exhaust vents are provided on both sides of the spacer layer.

[0013] By adopting the above technical solution, ventilation openings are opened on both sides of the interlayer to facilitate the emission of fumes during the soldering process and reduce the impact of fumes on soldering.

[0014] Optionally, both the front and rear fasteners are divided into two groups. The front fasteners are positioned at two corners of the top plate at a preset distance, and the rear fasteners are installed at both ends of the hinge frame at a preset distance.

[0015] By adopting the above technical solution, the front and rear fixing parts are respectively two sets forming a four-corner structure, which provides support for the four corners and improves the stability of the overall fixing fixture.

[0016] Optionally, the second clamping plate is provided with a sliding groove, and the sliding groove is provided with an elastic part and a clamping part; the clamping part is slidably connected to the sliding groove, one end of the elastic part is connected to the groove wall of the sliding groove, and the other end is connected to the clamping part; the second clamping plate is also provided with a reference protrusion on the side away from the clamping part.

[0017] By adopting the above technical solution, the reference protrusion on the top plate provides a placement base point for the circuit board, and the clamping part is pulled to move along the sliding groove. During the movement, the elastic part is pressed to make the circuit board stably positioned on the second clamping plate. Then, the clamping part is released, and the elastic part provides elastic force to the clamping part, causing the clamping part to move along the sliding groove until it cooperates with the reference protrusion to clamp the circuit board, thereby achieving the function of stabilizing the circuit board.

[0018] Optionally, the front fixing member includes a fixing post, a telescopic part, a reset part, and a pulling part; the fixing post is connected to the top plate, and a telescopic groove is formed on the fixing post, and a pulling hole is formed in the telescopic groove near the clamping part; the telescopic part and the reset part are both located in the telescopic groove, and the telescopic part is slidably connected to the telescopic groove, one end of the reset part is connected to the groove wall of the telescopic groove, and the other end is connected to the telescopic part; one end of the pulling part is connected to the telescopic part, and the other end passes through the pulling hole and is connected to the clamping part; the reset part generates an elastic force, and the elastic force is greater than the elastic force generated by the elastic part.

[0019] By adopting the above technical solution, when the circuit board needs to be replaced, the fixing fixture is removed from the soldering device. After the telescopic part is disengaged from the soldering device, it is reset by the elastic force of the reset part. Since the elastic force of the reset part is greater than that of the elastic part, the reset part overcomes the elastic force of the elastic part and simultaneously pulls the clamping part along the sliding groove through the pulling part, so that the clamping part no longer clamps the circuit board. The bottom plate can then be lifted to remove the circuit board. This achieves the function of automatically unfolding or clamping the circuit board without pulling the clamping part, improving the flexibility and stability of clamping and fixing the circuit board.

[0020] A soldering device for a cooling fan circuit board includes a cooling fan circuit board fixing fixture and a receiving base. The receiving base has a limiting structure, which includes an adjusting plate and an adjusting bolt. The receiving base has a plurality of threaded holes, and the adjusting plate has an elongated hole. The elongated hole mates with any of the threaded holes, and the adjusting bolt passes through the elongated hole and is screwed into the threaded hole. The adjusting plate moves along the adjusting bolt through the elongated hole to adjust the installation position, so that the fixing fixture can be accurately engaged in the adjusting plate to provide limiting.

[0021] By adopting the above technical solution, the adjustment plate moves along the adjustment bolt through the elongated hole to adjust the installation position of the adjustment plate, so that the fixing fixture can be accurately locked into the adjustment plate to provide a limit, thereby ensuring the accurate position of the fixing fixture and avoiding deviation or offset during soldering.

[0022] Optionally, the fixing fixture is placed after the soldering device, and a negative pressure structure is also provided at the front fixing member, the negative pressure structure being connected to the exhaust port.

[0023] By adopting the above technical solution, the negative pressure structure generates airflow within the interlayer, allowing the fumes generated during soldering to flow from the interlayer to the exhaust vent, thereby achieving the function of removing fumes.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. The front fixing member is located on the top surface of the top plate and covers the top plate. The rear fixing member is located at the bottom of the hinge frame. Both are placed on the soldering device placement surface required for soldering, thereby covering the bottom plate. This prevents the top plate and bottom plate from being lifted after flipping, so that the circuit board located between the top plate and the bottom plate is stably clamped, thereby improving the stability during soldering. 2. Hole adapters are used to adapt to soldering holes. For example, some circuit boards require different soldering positions, so hole adapters can be used to cover some unnecessary soldering holes or partially obscure the size of the soldering holes, thereby achieving the function of adapting to different soldering points on different soldering boards. 3. After the adapter board is inserted into the slot, it can rotate with the adapter frame and pivot into the spacer layer and cover the solder holes. The remaining adapter holes are the solder points, which can be used to determine the solder points required for different circuit boards. 4. Depending on the different solder points required for different circuit boards, different types of adapter boards can be used to adapt to the solder points of different circuit boards, thus avoiding situations of over-soldering or under-soldering. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural schematic diagram of the fixing fixture in one embodiment of this application; Figure 2 This is a schematic diagram of the cross-sectional structure of the top plate and the front fixing member in some embodiments of this application; Figure 3 This is a top view schematic diagram of the first type of structure of the second clamping plate in some embodiments of this application; Figure 4 This is a schematic diagram of a second top view of the second clamping plate in some embodiments of this application; Figure 5 This is a three-dimensional structural schematic diagram of the soldering device in some embodiments of this application; The markings in the attached diagram are as follows: 1. Top plate; 11. Welding hole; 12. First clamping plate; 121. Pivoting hole; 13. Second clamping plate; 131. Sliding groove; 132. Clamping part; 133. Elastic part; 14. Spacer layer; 141. Magnetic block; 15. Reference protrusion; 16. Exhaust vent; 2. Bottom plate; 21. Conductor groove; 3. Front fixing part; 31. Fixing column; 311. Telescopic groove; 312. Pulling... 32. Hole, telescopic part, 33. Reset part, 34. Pulling part, 4. Rear fixing part, 5. Hinge frame, 6. Hole adapter, 61. Adapter frame, 611. Slot, 62. Pivot shaft, 63. Adapter plate, 631. Adapter hole, 632. Magnetic suction piece, 7. Support base, 71. Threaded hole, 8. Limiting structure, 81. Adjusting plate, 811. Long strip hole, 82. Adjusting bolt, 9. Negative pressure structure. Detailed Implementation

[0026] The following specific examples illustrate the implementation methods of this application. Those skilled in the art can easily understand other advantages and effects of this application from the information disclosed herein. This application can also be implemented or applied through other different specific embodiments, and various details in this application can be modified or changed according to different viewpoints and application systems without departing from the spirit of this application. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0027] The embodiments of this application will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily implement the application. This application may be embodied in many different forms and is not limited to the embodiments described herein.

[0028] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics represented in connection with that embodiment or example, which are included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics represented may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate different embodiments or examples represented in this application, as well as features of different embodiments or examples.

[0029] Furthermore, the terms "first" and "second" are used only to indicate an objective and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the representation of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0030] Throughout this specification, when it is said that a device is "connected" to another device, this includes not only "direct connection" but also "indirect connection" by placing other components in between. Furthermore, when it is said that a device "comprises" a certain constituent element, unless otherwise stated otherwise, this does not exclude other constituent elements, but rather implies that other constituent elements may be included.

[0031] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail below.

[0032] This application discloses a heat dissipation fan circuit board fixing fixture and a soldering device.

[0033] A fixture for fixing a cooling fan circuit board is provided. This fixture is mainly for fixing circuit boards that are designed for use as cooling fans. Other types of circuit boards can also be used if they are the same size and style.

[0034] refer to Figure 1 As shown, the fixing fixture includes a top plate 1, a bottom plate 2, a front fixing member 3, a rear fixing member 4, and a hinge frame 5; the top plate 1 is fixedly installed on the hinge frame 5, the top plate 1 is the top panel of the fixing fixture, and the top plate 1 has several soldering holes 11 for providing soldering, the soldering holes 11 are for inserting a soldering gun for soldering.

[0035] The base plate 2 is hinged to the hinge frame 5. The hinge frame 5 includes two sets of hinge seats, and a hinge shaft is pivotally connected between the hinge seats. The base plate 2 is fixedly connected to the hinge shaft, so that it can rotate along the hinge seat with the hinge shaft, thereby cooperating with the top plate 1 to achieve the opening and closing function.

[0036] The front fixing member 3 is installed on the top surface of the top plate 1, so that the position of the front fixing member 3 remains unchanged. The rear fixing member 4 is installed on the side of the hinge frame 5 away from the top plate 1, specifically on the hinge seat of the hinge frame 5. Therefore, it will not rotate with the hinge shaft. The bottom plate 2 is provided with a guide groove 21. The function of the guide groove 21 is to allow the rear fixing member 4 to pass through, so that the bottom plate 2 will not be affected by the rear fixing member 4 when it is flipped.

[0037] When the circuit board needs to be fixed, the base plate 2 is opened along the hinge frame 5 so that the bottom surface of the top plate 1 faces upward. The side of the circuit board that needs to be soldered can be placed on the bottom surface of the top plate 1 and correspond to the soldering hole 11. Then, the base plate 2 is rotated along the hinge frame 5. The base plate 2 is offset from the rear fixing member 4 through the guide groove 21 so that the rear fixing member 4 no longer affects the rotation of the base plate 2. Finally, the base plate 2 covers the circuit board to provide pressure so that the circuit board will not shift. Then, the top plate 1 and the base plate 2 are flipped so that the front fixing member 3 and the rear fixing member 4 provide support to the placement surface of the soldering device required for soldering. This method makes it impossible to lift the top plate 1 and the base plate 2 after flipping, because the front fixing member 3 is located on the top surface of the top plate 1 and covers the top plate 1. The rear fixing member 4 is located at the bottom of the hinge frame 5 and is placed on the placement surface of the soldering device required for soldering, thereby covering the base plate 2. This gives the circuit board located between the top plate 1 and the base plate 2 a stable clamping effect, thereby improving the stability during soldering.

[0038] When it is necessary to remove the circuit board, remove the fixing fixture from the soldering device, and flip the top plate 1 and the bottom plate 2 so that the front fixing part 3 and the rear fixing part 4 face upwards. Then, the bottom plate 2 can be lifted by the hinge frame 5 to remove the circuit board, which can facilitate the removal and placement.

[0039] The front fixing member 3 and the rear fixing member 4 are each divided into two groups. The front fixing member 3 is set at two corners of the top plate 1 at a preset distance, and the rear fixing member 4 is installed at both ends of the hinge frame 5 at a preset distance. The front fixing member 3 and the rear fixing member 4 form a four-corner structure in two groups, respectively providing support for the four corners and improving the stability of the overall fixing fixture.

[0040] In some embodiments, reference Figure 2 As shown, the top plate 1 is divided into a first clamping plate 12 and a second clamping plate 13. A spacer layer 14 is provided between the first clamping plate 12 and the second clamping plate 13. A hole adapter 6 is provided in the spacer layer 14. The hole adapter 6 is used to adapt the soldering hole 11. For example, the required soldering positions of some circuit boards are different. Therefore, the hole adapter 6 can be used to cover some unnecessary soldering holes 11 or to partially obscure the size of the soldering hole 11, thereby achieving the function of adapting to different soldering points on different soldering boards.

[0041] Further reference Figure 3 and Figure 4 As shown, the hole adapter 6 includes an adapter frame 61, a pivot shaft 62, and an adapter plate 63; a pivot hole 121 is provided at the corner of the top plate 1, specifically at the corner of the first clamping plate 12. The pivot shaft 62 is pivotally connected to the pivot hole 121. Fixed caps are provided at both ends of the pivot shaft 62. The size of the fixed caps is larger than the diameter of the pivot hole 121. Therefore, when the pivot shaft 62 is located in the pivot hole 121, it is limited by the fixed caps to prevent the pivot shaft 62 from disengaging from the pivot hole 121 and to allow the pivot shaft 62 to rotate stably along the pivot hole 121.

[0042] The adapter 61 is mounted on the pivot shaft 62, and the adapter 61 has a slot 611. The slot 611 can be T-shaped. The adapter 61 can rotate along the pivot shaft 62 and extend into the spacer layer 14.

[0043] The adapter board 63 is slidably connected to the slot 611, and the adapter board 63 has an adapter hole 631. The adapter hole 631 is made according to the solder points required by the circuit board. Therefore, the bottom of the adapter board 63 has a T-shaped protrusion. After the T-shaped protrusion is inserted into the T-shaped slot 611, the adapter board 63 can rotate into the spacer layer 14 along with the adapter frame 61 and the pivot shaft 62, and cover the solder hole 11. The remaining adapter hole 631 is the solder point. In this way, the solder points required by different circuit boards can be determined.

[0044] Furthermore, there are several adapter boards 63, and the size of the adapter holes 631 on different adapter boards 63 is different. Depending on the different solder points required by different circuit boards, the solder points of different circuit boards can be adapted by replacing different styles of adapter boards 63, thus avoiding the situation of too much soldering or too little soldering.

[0045] Furthermore, a magnetic block 141 is provided in the interlayer 14, and a magnetic absorbing piece 632 is provided at the corner of the adapter plate 63 away from the insertion slot. When the adapter plate 63 is rotated to the magnetic block 141 by the adapter frame 61 and the pivot shaft 62, it is fixed to the magnetic block 141 by the magnetic absorbing piece 632, thereby fixing the position of the adapter plate 63 and ensuring that the position of the adapter hole 631 on the adapter plate 63 covering the solder hole 11 is accurate or that the solder point position is accurate.

[0046] When replacement is needed, the adapter frame 61 and adapter plate 63 can be rotated out of the interlayer 14 by rotating the pivot shaft 62 with a force greater than the magnetic force.

[0047] Furthermore, exhaust vents 16 are provided on both sides of the spacer 14. The purpose of the exhaust vents 16 is to facilitate the discharge of smoke during soldering. If the smoke is too thick, it can easily cover the solder joints. In some mechanical soldering processes, sensors are used to detect the solder joints, but the smoke can make it impossible to identify the solder joints. Therefore, exhaust vents 16 are provided on both sides of the spacer 14 to facilitate the discharge of smoke during the soldering process and reduce the impact of smoke on the soldering.

[0048] In some embodiments, reference Figure 2 As shown, a sliding groove 131 is provided on the second clamping plate 13. An elastic part 133 and a clamping part 132 are provided in the sliding groove 131. The clamping part 132 is slidably connected to the sliding groove 131. The clamping part 132 can be a clamping block. The clamping block is inverted L-shaped and is used to clamp circuit boards of different sizes to prevent the circuit boards from loosening.

[0049] One end of the elastic part 133 is connected to the groove wall of the sliding groove 131, and the other end is connected to the clamping part 132. The sliding groove 131 provides a limiting effect, so that the clamping part 132 cannot be disengaged from the sliding groove 131, but can slide along the sliding groove 131. The elastic part 133 can be a spring, and the function of the spring is to provide the elastic force for the clamping part 132 to slide along the sliding groove 131.

[0050] A reference protrusion 15 is also provided on the side of the top plate 1 away from the clamping part 132. The reference protrusion 15 is used to provide a reference point for the placement of the circuit board. Since the top plate 1 and the bottom plate 2 are flipped together when the circuit board is placed, the circuit board is placed on the top plate 1. Therefore, when the circuit board is placed, the reference protrusion 15 of the top plate 1 provides a placement reference point for the circuit board and pulls the clamping part 132, so that the clamping part 132 moves along the sliding groove 131. During the movement, the elastic part 133 is pressed, so that the circuit board can be stably placed on the second clamping plate 13. Then, the clamping part 132 is released, so that the elastic part 133 provides elastic force to the clamping part 132, causing the clamping part 132 to move along the sliding groove 131 until it cooperates with the reference protrusion 15 to clamp the circuit board, thereby achieving the function of stabilizing the circuit board.

[0051] Further reference Figure 2 As shown, the front fixing member 3 includes a fixing post 31, a telescopic part 32, a reset part 33 and a pulling part 34; the fixing post 31 is connected to the top plate 1, the fixing post 31 provides overall support, and the fixing post 31 is provided with a telescopic groove 311, and the telescopic groove 311 is provided with a pulling hole 312 in the direction near the clamping part 132.

[0052] Both the telescopic part 32 and the reset part 33 are located inside the telescopic groove 311, and the telescopic part 32 is slidably connected to the telescopic groove 311. The telescopic part 32 can be a telescopic column, and the length of the telescopic column is greater than the groove depth of the telescopic groove 311, so that when the telescopic column is inserted into the telescopic groove 311, one end will be reserved outside the telescopic groove 311 to provide support.

[0053] One end of the reset part 33 is connected to the wall of the telescopic groove 311, and the other end is connected to the telescopic part 32. The reset part 33 can be a spring, and the pulling part 34 can be a pull rope. One end of the pulling part 34 is connected to the telescopic part 32, and the other end passes through the pulling hole 312 and is connected to the clamping part 132, so that the pulling part 34 can pull the clamping part 132 along the pulling hole 312 to move along the sliding groove 131. The reset part 33 is used to push the telescopic part 32 out of the telescopic groove 311 to achieve reset.

[0054] Both the elastic part 133 and the reset part 33 can be springs. The elastic force generated by the reset part 33 is greater than that generated by the elastic part 133, so that the reset part 33 will overcome the elastic force of the elastic part 133 and drive the clamping part 132 to move.

[0055] Specifically, during the circuit board placement stage, the top plate 1 and bottom plate 2 are flipped. After the bottom plate 2 is lifted, the circuit board can be placed on the second clamping plate 13 of the top plate 1, with the reference protrusion 15 as the placement reference point. At this time, the reset part 33 generates elastic force to push the telescopic part 32 out of the telescopic groove 311, and causes the pulling part 34 to pull the clamping part 132 to move towards the fixing post 31. The circuit board can then be placed on the second clamping plate 13. Subsequently, after the bottom plate 2 is covered by the hinge frame 5, the top plate 1 and bottom plate 2 are flipped, and the front fixing is used... The fixing part 3 and the rear fixing part 4 are placed on the placement surface of the soldering device. When placed, the telescopic part 32 is pressed down by the overall fixing fixture and the circuit board and extends into the telescopic groove 311, and squeezes the reset part 33. The pulling part 34 is simultaneously subjected to the elastic force of the elastic part 133 and moves towards the circuit board along with the clamping part 132, so that the clamping part 132 and the reference protrusion 15 clamp the circuit board, so as to achieve the function of automatically unfolding or clamping the circuit board without pulling the clamping part 132, thereby improving the flexibility and stability of clamping and fixing the circuit board.

[0056] When the circuit board needs to be replaced, the fixing fixture is removed from the soldering device. After the telescopic part 32 is disengaged from the soldering device, it is reset by the elastic force of the reset part 33. Since the elastic force of the reset part 33 is greater than the elastic force of the elastic part 133, the reset part 33 overcomes the elastic force of the elastic part 133 and simultaneously pulls the clamping part 132 along the sliding groove 131 through the pulling part 34, so that the clamping part 132 no longer clamps the circuit board, and the bottom plate 2 can be lifted to take out the circuit board.

[0057] This application also provides a soldering device for a cooling fan circuit board, see reference. Figure 5 As shown, the fixture includes the cooling fan circuit board fixing jig in the above embodiment, and also includes a receiving base 7. The receiving base 7 is provided with a limiting structure 8, which is used to fix the position of the fixing jig to prevent it from deviating or shifting during soldering.

[0058] The soldering device is externally connected to a soldering gun, which is either manually held by hand or held by a robotic arm, depending on the requirements. Since it is not related to the technical problem solved by this application, the soldering gun is not shown in the figure.

[0059] The limiting structure 8 includes an adjusting plate 81 and an adjusting bolt 82. The receiving base 7 has several threaded holes 71, and the adjusting plate 81 has an elongated hole 811. The elongated hole 811 is connected to any of the threaded holes 71, and the adjusting bolt 82 passes through the elongated hole 811 and is screwed to the threaded hole 71. The adjusting plate 81 moves along the adjusting bolt 82 through the elongated hole 811 to adjust the installation position, so that the fixing fixture can be accurately inserted into the adjusting plate 81 to provide limiting. The number of adjusting plates 81 can be set to two, and the adjusting plates 81 are L-shaped plates, which can abut against three sides of the fixing fixture to achieve three-point limiting and ensure the accurate position of the fixing fixture.

[0060] Furthermore, after the fixing fixture is placed behind the soldering device, a negative pressure structure 9 is also provided at the front fixing part 3. The negative pressure structure 9 is connected to the spacer 14, specifically the exhaust port 16. The negative pressure structure 9 can generate airflow to draw out the fumes generated during soldering. The airflow drives the fumes to flow out from the exhaust port 16 of the spacer 14.

[0061] The negative pressure structure 9 includes a negative pressure cylinder, a filter element, and a negative pressure fan. The cylinder opening of the negative pressure cylinder is aligned with the exhaust port 16. The filter element is installed at the cylinder opening of the negative pressure cylinder and includes a filter screen and an activated carbon layer. The negative pressure fan is installed at the end of the negative pressure cylinder away from the filter element, and the drive end of the negative pressure fan is connected to a negative pressure fan blade, so that the negative pressure fan blade rotates inside the negative pressure cylinder, thereby generating negative pressure. The airflow can then follow the negative pressure to the filter element, and after the smoke is filtered by the filter element, it is discharged from the rear end of the negative pressure motor.

[0062] The negative pressure structure 9 is located between the two front fixing parts 3, providing both limiting and airflow.

[0063] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be included within the scope of protection of this application.

Claims

1. A fixture for fixing a cooling fan circuit board, characterized in that, The system includes a top plate (1), a bottom plate (2), a front fixing member (3), a rear fixing member (4), and a hinge frame (5); the top plate (1) is fixedly installed on the hinge frame (5), and the top plate (1) has several soldering holes (11) for providing solder; the bottom plate (2) is hinged to the hinge frame (5); the front fixing member (3) is installed on the top surface of the top plate (1), and the rear fixing member (4) is installed on the side of the hinge frame (5) away from the top plate (1), and the bottom plate (2) is fixedly installed on the top surface of the top plate (1). A through groove (21) is provided on the plate (2); the circuit board is placed on the top plate (1), and the bottom plate (2) is rotated along the hinge frame (5). The bottom plate (2) is offset from the rear fixing member (4) through the through groove (21), so that the bottom plate (2) covers the circuit board to provide pressure. The top plate (1) and the bottom plate (2) are flipped over, so that the front fixing member (3) and the rear fixing member (4) provide support towards the placement surface of the soldering device required for soldering.

2. The cooling fan circuit board fixing fixture according to claim 1, characterized in that, The top plate (1) is divided into a first clamping plate (12) and a second clamping plate (13). A spacer layer (14) is provided between the first clamping plate (12) and the second clamping plate (13). A hole fitting (6) is provided in the spacer layer (14).

3. The cooling fan circuit board fixing fixture according to claim 2, characterized in that, The hole adapter (6) includes an adapter frame (61), a pivot shaft (62), and an adapter plate (63); a pivot hole (121) is provided at the corner of the top plate (1), and the pivot shaft (62) is pivotally connected to the pivot hole (121); the adapter frame (61) is installed on the pivot shaft (62), and a slot (611) is provided on the adapter frame (61); the adapter plate (63) is slidably connected to the slot (611), and an adapter hole (631) is provided on the adapter plate (63).

4. The cooling fan circuit board fixing fixture according to claim 3, characterized in that, The adapter plate (63) is provided in several pieces, and the size of the adapter hole (631) on different adapter plates (63) is different.

5. A heat dissipation fan circuit board fixing fixture according to claim 3, characterized in that, The spacer interlayer (14) is provided with exhaust vents (16) on both sides.

6. A cooling fan circuit board fixing fixture according to claim 5, characterized in that, The front fixing member (3) and the rear fixing member (4) are both divided into two groups. The front fixing member (3) is set at two corners of the top plate (1) at a preset distance, and the rear fixing member (4) is installed at both ends of the hinge frame (5) at a preset distance.

7. A cooling fan circuit board fixing fixture according to claim 5, characterized in that, The second clamping plate (13) is provided with a sliding groove (131), and the sliding groove (131) is provided with an elastic part (133) and a clamping part (132); the clamping part (132) is slidably connected to the sliding groove (131), one end of the elastic part (133) is connected to the groove wall of the sliding groove (131), and the other end is connected to the clamping part (132); the second clamping plate (13) is also provided with a reference protrusion (15) on the side away from the clamping part (132).

8. A heat dissipation fan circuit board fixing fixture according to claim 7, characterized in that, The front fixing member (3) includes a fixing post (31), a telescopic part (32), a reset part (33), and a pulling part (34); the fixing post (31) is connected to the top plate (1), and a telescopic groove (311) is provided on the fixing post (31), and a pulling hole (312) is provided in the telescopic groove (311) near the clamping part (132); the telescopic part (32) and the reset part (33) are both located in the telescopic groove (311), and The telescopic part (32) is slidably connected to the telescopic groove (311), one end of the reset part (33) is connected to the groove wall of the telescopic groove (311), and the other end is connected to the telescopic part (32); one end of the pulling part (34) is connected to the telescopic part (32), and the other end passes through the pulling hole (312) and is connected to the clamping part (132); the reset part (33) generates elastic force, and the elastic force is greater than the elastic force generated by the elastic part (133).

9. A soldering device for a cooling fan circuit board, characterized in that, The fixture for fixing a cooling fan circuit board, as described in any one of claims 5-8, further includes a receiving base (7), on which a limiting structure (8) is provided. The limiting structure (8) includes an adjusting plate (81) and an adjusting bolt (82). The receiving base (7) has a plurality of threaded holes (71), and the adjusting plate (81) has an elongated hole (811). The elongated hole (811) is connected to any of the threaded holes (71), and is screwed to the threaded hole (71) through the elongated hole (811) by the adjusting bolt (82). The adjusting plate (81) moves along the adjusting bolt (82) through the elongated hole (811) to adjust the installation position, so that the fixture can be accurately inserted into the adjusting plate (81) to provide a limiting position.

10. A soldering device for a cooling fan circuit board according to claim 9, characterized in that, The fixing fixture is placed behind the soldering device, and a negative pressure structure (9) is also provided at the front fixing member (3), the negative pressure structure (9) being connected to the exhaust port (16).

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