A drone stator FPC soldering jig

Abstract

The utility model relates to jig field, specifically disclose a kind of unmanned plane stator FPC soldering jig, including jig bottom plate, FPC jig, jig stopper, jig guide rod, elastic pressure block, elastic pressure fixed block, rotating pin, fixture bushing and compression spring;FPC jig is fixedly arranged in the upper surface middle part of jig bottom plate, jig guide rod is along vertical and is arranged in the center of FPC jig;Jig stopper is arranged in the outer side edge position of jig bottom plate;Elastic pressure fixed block is fixedly arranged in the outer side of FPC jig, elastic pressure block is hinged with elastic pressure fixed block by rotating pin;Compression spring is arranged between elastic pressure block and elastic pressure fixed block, and two ends are respectively with elastic pressure block and elastic pressure fixed block abut;Fixture bushing is embedded in the lower surface of jig bottom plate.The utility model solves the problem of enameled wire and pad positioning when unmanned plane coil and FPC are automatically soldered, effectively guarantees accurate alignment and stable compression in soldering process, and improves the welding yield.

Description

Technical Field

[0001] This utility model relates to the field of fixture technology, specifically to a stator FPC soldering fixture for unmanned aerial vehicles (UAVs). Background Technology

[0002] As a core power component, the manufacturing and assembly precision and reliability requirements for drone motors are becoming increasingly stringent. In the stator production process of drone motors, the stator coil leads need to be precisely aligned with the flexible printed circuit board (FPC) and then soldered. The quality of the FPC solder directly affects the internal electrical conductivity of the motor and the safety and stability of the entire aircraft.

[0003] Currently, most stator FPC soldering auxiliary fixtures used in the industry employ a fixed rigid base and limiting clamp structure. In actual operation, workers typically place the stator on the fixture base plate and rely on the bottom spring or fixing clamps to press the FPC onto the stator wire ends for manual or automatic soldering. However, existing fixtures of this type have significant drawbacks in practical applications.

[0004] First, traditional fixed clamping blocks or single rigid clamping methods lack flexible adaptive adjustment capabilities. Due to manufacturing tolerances, there is a slight difference between the stator wire tip height and the FPC thickness. Rigid clamping can easily cause excessive pressure, leading to FPC copper foil breakage and insulation layer damage, or insufficient pressure, resulting in poor contact between the wire tip and the FPC pads, ultimately causing problems such as cold solder joints and false solder joints, severely reducing the product yield.

[0005] Secondly, existing fixtures generally lack precise center guiding structures and circumferential positioning mechanisms. When operators place the stator and FPC, the lack of effective reference guidance makes it easy for the stator and FPC to shift horizontally relative to each other. This alignment deviation not only increases the difficulty of soldering but also causes the solder joints to deviate from the intended pads, affecting the reliability of the electrical connection.

[0006] Furthermore, existing fixtures typically rely solely on simple mounting holes for fixation, lacking a high-precision, quick-positioning bushing structure. This leads to accumulated positional errors when the fixture is repeatedly disassembled and reassembled on the equipment, impacting processing efficiency and hindering subsequent maintenance, replacement, and standard parts interchangeability. For automated production lines for UAV motors requiring high cycle times and high consistency, existing fixtures are insufficient to meet their production needs.

[0007] Therefore, there is an urgent need to design a new type of soldering fixture that can provide stable elastic pressing and has precise guiding and alignment functions. Utility Model Content

[0008] This utility model addresses the aforementioned problems in the prior art by providing a soldering fixture for UAV stator FPCs, effectively solving the problem of positioning the enameled wire and pads during automatic soldering of UAV coils and FPCs, thereby improving the soldering yield and operational stability of stator FPCs.

[0009] To achieve the above objectives, this utility model proposes a stator FPC soldering fixture for unmanned aerial vehicles, including a fixture base plate, an FPC fixture, a fixture stop block, a fixture guide rod, a spring-loaded block, a spring-loaded fixing block, a rotating pin, a bushing for the fixture, and a compression spring. The FPC fixture is fixedly installed in the middle of the upper surface of the fixture base plate, and the fixture guide rod passes through the FPC fixture vertically. The fixture stop is located at the outer edge of the fixture base plate; The spring-loaded fixing block is fixedly disposed on the outside of the FPC fixture. The spring-loaded block is hinged to the spring-loaded fixing block through the rotating pin. The compression spring is disposed between the spring-loaded block and the spring-loaded fixing block, and the two ends of the compression spring abut against the spring-loaded block and the spring-loaded fixing block respectively. The clamp is fitted with a bushing on the lower surface of the fixture base plate.

[0010] Preferably, the top end of the fixture guide rod extends upward above the FPC fixture.

[0011] Preferably, the base plate of the fixture has a rectangular plate structure.

[0012] Preferably, the FPC fixture has an annular polygonal structure, and the FPC fixture has multiple accommodating cavities spaced circumferentially, with the spring-loaded fixing block correspondingly embedded and fixed in the accommodating cavity.

[0013] Preferably, the spring-loaded fixing block is provided with a hinge hole, the rotating pin passes through the hinge hole, one end of the spring-loaded block is provided with a sleeve portion sleeved on the rotating pin, and the spring-loaded block is rotatably connected to the spring-loaded fixing block with the rotating pin as the axis.

[0014] Preferably, the side of the spring-loaded fixing block facing the spring-loaded block has a first spring-embedded groove, and the side of the spring-loaded block facing the spring-loaded fixing block has a second spring-embedded groove, with both ends of the compression spring respectively embedded in the first spring-embedded groove and the second spring-embedded groove.

[0015] Preferably, the side of the spring-loaded block opposite to the spring-loaded fixing block is provided with a pressing portion that extends obliquely toward the center of the FPC fixture.

[0016] Preferably, the fixture bushings are provided in two parts, and the two fixture bushings are symmetrically embedded in the mounting holes at the bottom of the fixture base plate, and the fixture bushings are provided with stepped through holes for positioning and engagement.

[0017] Therefore, this utility model proposes a stator FPC soldering fixture for unmanned aerial vehicles (UAVs), which has the following beneficial effects: (1) By providing a central reference through the guide rod of the fixture, and in conjunction with the cavity of the FPC fixture, the stator and FPC can be quickly and accurately aligned and the horizontal offset of welding can be avoided, effectively eliminating the offset error caused by manual placement and improving the positioning accuracy.

[0018] (2) The elastic pressing structure consisting of a rotating pin hinge and a compression spring can adapt to the wire end height tolerance and provide a constant and flexible pressing force. While ensuring close contact of the solder pads, it effectively avoids FPC damage caused by rigid pressure and significantly improves the welding yield.

[0019] (3) The fixture bushing on the bottom surface of the fixture base plate achieves high-precision and rapid disassembly and positioning, and combined with the lateral physical limit of the fixture block, it enhances the overall anti-slip stability during operation; the modular structure also facilitates the individual replacement and maintenance of components such as compression springs in the later stage.

[0020] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the lower side structure of a UAV stator FPC soldering fixture according to the present invention; Figure 2 This is a schematic diagram of the pressing mechanism of a stator FPC soldering fixture for unmanned aerial vehicles (UAVs) according to this utility model. Figure 3 This is a bottom view of the fixture base plate structure of a stator FPC soldering fixture for unmanned aerial vehicles (UAVs) according to this utility model. Figure 4 This is an exploded view of the overall structure of a UAV stator FPC soldering fixture according to this utility model; Figure 5 This is a partially enlarged schematic diagram of the spring assembly of the spring-pressing mechanism of a stator FPC soldering fixture for a drone, according to this utility model.

[0022] Figure Labels 1. Fixture base plate; 2. FPC fixture; 3. Fixture stop block; 4. Fixture guide rod; 5. Spring block; 6. Spring fixing block; 601 First spring slot; 7. Rotary pin; 8. Fixture bushing; 9. Compression spring. Detailed Implementation

[0023] To make the technical solution, advantages, and objectives of this utility model clearer, the technical solution of the embodiments of this utility model will be clearly and completely described below. The described embodiments are some, but not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this application.

[0024] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0025] like Figures 1-5 As shown, this utility model provides a stator FPC soldering fixture for unmanned aerial vehicles, including a fixture base plate 1, an FPC fixture 2, a fixture stop block 3, a fixture guide rod 4, a spring-loaded block 5, a spring-loaded fixing block 6, a rotating pin 7, a clamping bushing 8, and a compression spring 9.

[0026] The fixture base plate 1 is a rectangular plate structure and serves as the supporting base for the entire fixture. The FPC fixture 2 is fixedly installed at the center of the upper surface of the fixture base plate 1. The FPC fixture 2 is an annular polygonal structure with multiple accommodating cavities spaced around its circumference to accommodate the stator assembly.

[0027] The fixture guide rod 4 is vertically inserted at the center of the FPC fixture 2, and the top end of the fixture guide rod 4 extends upward above the FPC fixture 2, serving as the center positioning reference when the stator assembly is placed.

[0028] The fixture stop 3 is fixedly connected to the outer wall of the edge of the fixture base plate 1 to provide lateral physical limitation for the clamping assembly.

[0029] Two bushings 8 are provided for the fixture, which are symmetrically embedded in the mounting holes on the lower surface of the fixture base plate 1. The bushings 8 have stepped through holes inside, which are used for quick and precise positioning and locking of the fixture and external welding equipment.

[0030] The spring-loaded fixing block 6 is correspondingly embedded and fixed in the receiving cavity on the outside of the FPC fixture 2. One end of the spring-loaded block 5 is provided with a sleeve part, which is sleeved on the rotating pin 7. The rotating pin 7 passes through the hinge hole on the spring-loaded fixing block 6, so that the spring-loaded block 5 and the spring-loaded fixing block 6 form a rotatable hinge connection with the rotating pin 7 as the axis.

[0031] The side of the spring-loaded fixing block 6 facing the spring-loaded block 5 has a first spring-embedded groove 601, and the side of the spring-loaded block 5 facing the spring-loaded fixing block 6 has a second spring-embedded groove.

[0032] The first spring embedding groove 601 and the second spring embedding groove respectively form a limiting and receiving space that matches the end of the compression spring 9. The two ends of the compression spring 9 are embedded in the groove to achieve radial limiting, preventing the compression spring from slipping or shifting after assembly.

[0033] After assembly, the compression spring 9 remains in a pre-compressed state, with the two end faces of the spring respectively abutting against the bottom of the first spring embedding groove 601 and the bottom of the second spring embedding groove, stably applying an elastic driving force around the rotating pin to the spring block.

[0034] The two ends of the compression spring 9 are respectively embedded in the first spring mounting groove 601 and the second spring mounting groove, and the compression spring 9 is in a compressed state, so that the two ends of the compression spring 9 abut against the spring block 5 and the spring fixing block 6 respectively, thereby providing inward elastic pressure.

[0035] The spring block 5 has a pressing part that extends obliquely toward the center of the FPC fixture 2 on the side opposite to the spring fixing block 6.

[0036] The working process of this device is as follows: (1) Positioning and preloading: The UAV stator assembly is fitted onto the fixture guide rod 4 and placed into the receiving cavity of the FPC fixture 2. At this time, the fixture guide rod 4 serves as the central reference to eliminate the deviation.

[0037] The FPC is placed at the stator wire end. Under the elastic force of the compression spring 9, the spring block 5 rotates around the rotating pin 7. Its inclined extending pressing part adaptively presses against the upper surface of the FPC, so that the solder pads of the FPC are tightly attached to the stator wire end, completing the pre-clamping.

[0038] (2) Welding and stabilization: Start the external welding equipment to perform soldering. Under the combined action of the spring pressure and the lateral limiting of the fixture stop 3, the stator assembly and FPC remain stable in the fixture; the bottom clamp is precisely positioned with the bushing 8 and the equipment table to ensure that the entire fixture does not shift horizontally during the welding process and to ensure accurate welding point.

[0039] (3) Protection and maintenance: When there is a height tolerance at the stator wire end, the compression spring 9 compensates for the swing stroke of the spring block by its own extension and contraction deformation, so as to achieve flexible adaptive clamping of the FPC and avoid damage to the FPC due to rigid compression.

[0040] If the compression spring 9 fails due to fatigue after long-term high-frequency use, the operator only needs to remove the rotating pin 7 to separate the spring block 5 from the spring fixing block 6, quickly remove and replace the damaged compression spring 9, without scrapping the compression assembly.

[0041] Therefore, this utility model provides a soldering fixture for stator FPC of UAVs, which solves the technical problems of FPC damage caused by rigid clamping, easy alignment misalignment caused by manual placement, and poor welding due to poor positioning accuracy caused by repeated installation of the fixture in existing fixtures. It effectively improves the tightness of the fit between stator FPC and wire ends, avoids rigid pressure damage to FPC, and improves the yield of soldering operations. At the same time, its modular assembly structure also significantly reduces the difficulty and cost of later maintenance and replacement.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.

Claims

1. A UAV stator FPC soldering jig, characterized in that, Includes fixture base plate, FPC fixture, fixture stop, fixture guide rod, spring block, spring fixing block, rotating pin, fixture bushing and compression spring; The FPC fixture is fixedly installed in the middle of the upper surface of the fixture base plate, and the fixture guide rod passes through the FPC fixture vertically. The fixture stop is located at the outer edge of the fixture base plate; The spring-loaded fixing block is fixedly disposed on the outside of the FPC fixture. The spring-loaded block is hinged to the spring-loaded fixing block through the rotating pin. The compression spring is disposed between the spring-loaded block and the spring-loaded fixing block, and the two ends of the compression spring abut against the spring-loaded block and the spring-loaded fixing block respectively. The clamp is fitted with a bushing on the lower surface of the fixture base plate.

2. The UAV stator FPC soldering fixture according to claim 1, characterized in that, The top end of the fixture guide rod extends upward above the FPC fixture.

3. The unmanned aerial vehicle stator FPC soldering jig according to claim 1, characterized in that, The base plate of the fixture has a rectangular plate structure.

4. The unmanned aerial vehicle stator FPC soldering jig according to claim 1, characterized in that, The FPC fixture has a ring-shaped polygonal structure, and multiple receiving cavities are arranged circumferentially on the FPC fixture. The spring-loaded fixing block is correspondingly embedded and fixed in the receiving cavity.

5. The unmanned aerial vehicle stator FPC soldering jig according to claim 1, characterized in that, The spring-loaded fixing block is provided with a hinge hole, and the rotating pin passes through the hinge hole. One end of the spring-loaded block is provided with a sleeve portion that is fitted onto the rotating pin. The spring-loaded block is rotatably connected to the spring-loaded fixing block with the rotating pin as the axis.

6. The unmanned aerial vehicle stator FPC soldering jig according to claim 1, wherein, The elastic fixing block has a first spring embedding groove on the side facing the elastic fixing block, and a second spring embedding groove on the side facing the elastic fixing block. The two ends of the compression spring are respectively embedded in the first spring embedding groove and the second spring embedding groove.

7. The unmanned aerial vehicle stator FPC soldering jig according to claim 1, characterized in that, The side of the spring-loaded block opposite to the spring-loaded fixing block is provided with a pressing part that extends obliquely toward the center of the FPC fixture.

8. The unmanned aerial vehicle stator FPC soldering jig according to claim 1, wherein, The fixture bushings are provided in two parts, and the two fixture bushings are symmetrically embedded in the mounting holes at the bottom of the fixture base plate. The fixture bushings are provided with stepped through holes for positioning and fitting.

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