Circuit board connecting mechanism and unmanned aerial vehicle device thereof

Abstract

The invention discloses a circuit board connecting mechanism applied to an unmanned aerial vehicle device. The circuit board connecting mechanism comprises a bottom plate, at least one positioning piece, a flexible circuit board and a hard base material, the at least one positioning piece is arranged on the bottom plate. The positioning piece is provided with a first section, a second section and a third section which are connected in sequence, and the third section is connected with the bottom plate; the structural width of the second section is smaller than that of the first section and that of the third section. The flexible circuit board is arranged on the hard base material. The hard base material comprises a through hole structure and a supporting structure, the supporting structure is connected with the through hole structure, and a restraining ring of the supporting structure is movably connected to the second section in a sleeved mode. The radial size of the restraining ring is smaller than the first structure width and the third structure width.

Description

TECHNICAL FIELD

[0001] The present application relates to a circuit board connecting mechanism and a UAV device thereof, in particular to a circuit board connecting mechanism and a UAV device thereof capable of preventing damage to the board caused by violent shaking. BACKGROUND

[0002] With the progress of science and technology, UAVs gradually change from entertainment applications to functional applications, from simple performance to image detection and collection functions. For example, a common multi-rotor UAV uses a motor to drive a propeller to generate lift to achieve vertical take-off and landing. In order to identify obstacles during flight, the traditional UAV will carry a high-sensitivity camera module for shooting and image analysis. However, the traditional high-sensitivity camera module uses a flexible printed circuit board in combination with a hard printed circuit board fixing method, which is easy to cause the flexible printed circuit board to swing accordingly when the UAV performs a flip flight, thereby causing the interface between the flexible printed circuit board and the hard printed circuit board to break.

[0003] Therefore, how to design a circuit board connecting mechanism and a UAV capable of preventing damage to the board caused by violent shaking is one of the development goals of the related industry. SUMMARY

[0004] Therefore, the purpose of the present application is to provide a circuit board connecting mechanism and a UAV device thereof capable of preventing damage to the board caused by violent shaking to solve the above problems.

[0005] To achieve the above purpose, the present application provides a circuit board connecting mechanism, comprising:

[0006] a bottom plate;

[0007] at least one positioning member arranged on the bottom plate, the positioning member having a first section, a second section and a third section connected in sequence, the third section being connected to the bottom plate, the second section having a second structure width smaller than a first structure width of the first section and a third structure width of the third section;

[0008] a flexible circuit board; and

[0009] a hard substrate, the interface of the flexible circuit board being arranged on the hard substrate, the hard substrate comprising a through-hole structure and a support structure, the end of the support structure being connected to the edge of the through-hole structure, the restraint ring formed by the support structure being movably sleeved on the second section, the radial dimension of the restraint ring being smaller than the first structure width and the third structure width.

[0010] Preferably, the radial dimension of the restraint ring is greater than the second structure width.

[0011] Preferably, the first section of the positioning member has an arc-shaped structure, and the junction between the second section and the third section has an arc-shaped structure or a step structure.

[0012] Preferably, the circuit board connecting mechanism of claim 1, wherein the support structure comprises a connecting portion and a C-shaped portion, and the two opposite ends of the connecting portion are connected to the edge of the through-hole structure and the C-shaped portion, respectively.

[0013] Preferably, the support structure comprises a plurality of elastic arm units arranged symmetrically, and one end of the arc-shaped portion of each elastic arm unit is connected to the edge of the through-hole structure, and the other end of the arc-shaped portion is adjacent to one end of the arc-shaped portion of another elastic arm unit.

[0014] Preferably, the circuit board connecting mechanism further comprises a reset member arranged between the hard base and the bottom plate.

[0015] Further preferably, the elastic deformation direction of the reset member is parallel to the normal vector of the plane of the hard base.

[0016] Further preferably, the reset member is a spiral compression spring or an S-shaped compression spring.

[0017] Further preferably, the circuit board connecting mechanism further comprises a plurality of positioning members, and the reset member is arranged between the plurality of positioning members.

[0018] To achieve the above object, the present application also provides a UAV device comprising:

[0019] a housing;

[0020] a rotor mechanism arranged outside the housing;

[0021] a driving module electrically connected to the rotor mechanism and located in the housing; and

[0022] the circuit board connecting mechanism described above, which is located in the housing, and the bottom plate of the circuit board connecting mechanism is used to support the driving module.

[0023] Compared with the prior art, the flexible circuit board has flexibility, can be assembled in a bending or folding manner, and meets the lightweight design requirements of the UAV device due to its light weight and thin thickness. Therefore, the present application provides a circuit board connecting mechanism applied to a UAV device, which can avoid the accidental breakage or falling off of the flexible circuit board caused by instantaneous shaking of the UAV device during flight. The circuit board connecting mechanism of the present application combines the positioning member with the intermediate section narrower than the two end sections, and the hard base of the support structure with elastic recovery characteristics to the flexible circuit board, which can provide multi-axis dynamic adjustment with the change of the flight angle of the UAV device, and effectively avoid damage to the flexible circuit board due to the violent shaking of the UAV device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 FIG. 1 is a schematic diagram of the appearance of a drone device according to an embodiment of the present invention.

[0025] Figure 2 This is an assembly diagram of a circuit board connection mechanism according to an embodiment of the present invention.

[0026] Figure 3 1 is an exploded view of some components of a circuit board connection mechanism according to an embodiment of the present invention.

[0027] Figure 4 Schematic diagram of the application of the reset member according to an embodiment of the present invention.

[0028] Figure 5 Schematic diagram of the appearance of a positioning member according to an embodiment of the present invention.

[0029] Figure 6 Schematic diagram of partial assembly of a positioning member and a hard substrate according to an embodiment of the present invention.

[0030] Figure 7 FIG. 4 is a schematic diagram of a hard substrate according to another embodiment of the present invention. DETAILED DESCRIPTION

[0031] In order to provide a further understanding of the purpose, structure, features, and functions of the present invention, the present invention is described in detail below with reference to the embodiments.

[0032] Certain terms are used throughout the specification and claims to refer to specific components. Those skilled in the art will understand that manufacturers may use different terms to refer to the same component. This specification and claims do not distinguish components by name, but rather by their functional differences. Throughout the specification and claims, the term "including" is open-ended and should be interpreted as meaning "including, but not limited to."

[0033] See also Figure 1 , Figure 1 The UAV device 10 is a schematic diagram of the appearance of an embodiment of the present invention. The UAV device 10 can be a single-rotor UAV or a multi-rotor UAV, and is not limited to Figure 1 The drone device 10 may include a housing 12, a rotor mechanism 14, a drive module 16, and a circuit board connection mechanism 18. Housing 12 may house multiple electronic control components required by the drone device 10, such as infrared sensors, ultrasonic sensors, image sensors, and a GPS receiver, which are not listed and described separately in this disclosure. Rotor mechanisms 14 may be installed within housing 12, with their number and location determined by design requirements.

[0034] The driving module 16 can be disposed in the housing 12 and electrically connected to the rotor mechanism 14. In this embodiment, the driving module 16 is defined as an aircraft flight control system of the unmanned aerial vehicle device 10. The circuit board connecting mechanism 18 can be disposed in the housing 12 to support the driving module 16. When the driving module 16 controls the rotor mechanism 14 to operate the unmanned aerial vehicle device 10 to fly, the driving module 16 can make physical correction with the damping column (not labeled in the drawings) and drive the board member (for example, a flexible circuit board) of the circuit board connecting mechanism 18 to shake together, so that the unmanned aerial vehicle device 10 can use the circuit board connecting mechanism 18 of the present application to reduce the vibration amplitude and avoid damage to the connected board member between the driving module 16 and the circuit board connecting mechanism 18.

[0035] Please refer to Figure 2 and Figure 3 , Figure 2 is an assembly view of the circuit board connecting mechanism 18 of the embodiment of the present application, Figure 3 is an exploded view of part of the circuit board connecting mechanism 18 of the embodiment of the present application. The circuit board connecting mechanism 18 can include a bottom plate 20, a positioning member 22, a flexible circuit board 24, a hard base material 26, and a reset member 28. The bottom plate 20 can be a circuit board or a sheet metal member, depending on the design requirements of the unmanned aerial vehicle device 10; the driving module 16 can be disposed on the bottom plate 20. The number of positioning members 22 is not limited to the number shown in the figure; the positioning members 22 can be provided through the flexible circuit board 24 and the hard base material 26, and disposed on the bottom plate 20. The positioning members 22 can prevent the flexible circuit board 24 and the hard base material 26 from being separated from the bottom plate 20, and also provide a buffer margin when avoiding separation.

[0036] The flexible circuit board 24 can be disposed in the hard base material 26 by the positioning member 22, and located between the bottom plate 20 and the hard base material 26. The hard base material 26 can be a circuit board or a metal member. For example, the hard base material 26 is a circuit board, and the interface part of the flexible circuit board 24 is inserted and fixed in the hard base material 26, so that the flexible circuit board 24 and the hard base material 26 are electrically connected; or the hard base material 26 is a metal member, and the interface part of the flexible circuit board 24 is fixed in the hard base material 26 by, for example, clamping, locking, or the like; depending on the design requirements of the unmanned aerial vehicle device 10. The combination of the positioning member 22, the flexible circuit board 24, and the hard base material 26 is to provide an adjustable flexible design by the hard base material 26, so that the circuit board connecting mechanism 18 can make dynamic correction with the instantaneous shaking of the unmanned aerial vehicle device 10 when flying, thereby avoiding the connection between the flexible circuit board 24 and the positioning member 22 or the hard base material 26 from being broken.

[0037] In addition, the reset member 28 can be arranged between the base plate 20 and the hard substrate 26. The elastic deformation direction of the reset member 28 is perpendicular to the upper surface of the hard substrate 26, that is, the elastic deformation direction of the reset member 28 is parallel to the plane normal vector V1 of the hard substrate 26. It should be noted that the elastic deformation direction of the reset member 28 is roughly parallel to the plane normal vector V1, which can also be regarded as parallel to the plane normal vector V1. In the embodiment of the present invention, the reset member 28 is preferably designed as an S-shaped compression spring, which can use the flight movement inertia and elastic restoring force to allow the reset member 28 and the base plate 20 to maintain continuous contact with the hard substrate 26 (or the flexible circuit board 24 fixed on the hard substrate 26) when the drone device 10 is flying, so that the circuit board connection mechanism 18 can be dynamically corrected accordingly as the flight angle of the drone device 10 changes. The reset member 28 can also be designed as other types of springs, such as a spiral compression spring, but the actual application is not limited to this.

[0038] See also Figure 4 , Figure 4 The figure is a schematic diagram of the application of the reset member 28 according to an embodiment of the present invention. When the UAV device 10 is rapidly rolling or rotating, the internal drive module 16 will make dynamic corrections, which may cause the circuit board connection mechanism 18 to shake significantly. The elastic reset function of the reset member 28 can cooperate with the positioning member 22 to make rapid dynamic adjustments, so that the plane normal vector V1 of the flexible circuit board 24 and the hard substrate 26 is maintained at Figure 4 In the Z-axis direction shown, in addition to allowing the reset member 28 and the base plate 20 to continuously contact the hard substrate 26 (or the flexible circuit board 24 fixed on the hard substrate 26), a metal reset member 28 can also be selected, and the reset member 28 can also contact the contacts on the hard substrate 26 or the flexible circuit board 24. For example, the high-frequency signal can be conducted to the base plate 20 through the reset button 28, and then the high-frequency signal is conducted to the housing 12 or other signal shielding device through the base plate 20. However, the actual application is not limited to this. In this way, high-frequency signals can be prevented from interfering with the global positioning system recognition results of the drone device 10. In some embodiments, such as Figure 4As shown, the two flexible circuit boards 24 / 24' are electrically connected by two mating connectors 48 / 48', respectively, in other words, the two flexible circuit boards 24 / 24' are respectively provided with the connectors 48 / 48' corresponding to each other, the connectors 48 / 48' are arranged between the two flexible circuit boards 24 / 24' to electrically connect the corresponding electronic components, and the two flexible circuit boards 24 / 24' can be further respectively provided with two rigid substrates 26 / 26'. In the embodiment of the present application, the positioning member 22 only penetrates one set of flexible circuit board 24 and rigid substrate 26; in other embodiments, the positioning member 22 can also penetrate two sets of flexible circuit boards 24 / 24' and rigid substrates 26 / 26', but the actual application can not be limited to this. It is particularly pointed out that the rigid substrate 26' contacted by the reset member 28 and the two connectors 48 / 48' can be unnecessary elements, that is, in some embodiments, the reset member 28 can directly touch the flexible circuit board 24, or touch the components (such as the connector 48) on the flexible circuit board 24, or touch the area on the rigid substrate 26 that does not correspond to the connector 48, but the actual application can not be limited to this. Generally, the reset member 28 is used to absorb the large amplitude of the circuit board connecting mechanism 18 to maintain the normal vector V1 of the plane of the flexible circuit board 24 and the rigid substrate 26 in the Z-axis direction, and the reset member 28 is preferably arranged beside the positioning member 22 to dynamically correct the circuit board connecting mechanism 18 more quickly; if the circuit board connecting mechanism 18 has multiple positioning members 22, the reset member 28 can be selectively arranged in the middle area between the multiple positioning members 22 to achieve a better balance effect, but the actual application can not be limited to this.

[0039] Please refer to Figure 5 with Figure 6 , Figure 5 is a schematic view of the appearance of the positioning member 22 of the embodiment of the present application, Figure 6 is a partial assembly schematic view of the positioning member 22 and the rigid substrate 26 of the embodiment of the present application. The positioning member 22 can have a first section 30, a second section 32 and a third section 34 connected in sequence. The second section 32 is located between the first section 30 and the third section 34. The third section 34 is connected to the bottom plate 20. If the bottom plate 20 is a circuit board, the reset member 28 and the third section 34 are arranged on the bottom plate 20, for example, by surface mount technology (SMT); if the bottom plate 20 is a metal piece, the reset member 28 and the third section 34 are arranged on the bottom plate 20, for example, by riveting, or a rivet can also be arranged on the bottom plate 20 by riveting, and the reset member 28 and the third section 34 are fixedly connected to the rivet by welding or the like; but the actual application can not be limited to this. The positioning member 22 can be used to connect the bottom plate 20, the flexible circuit board 24 and the rigid substrate 26, and can also be used to connect the rigid substrate 26 and the metal piece 46. As Figure 5As shown, the second structural width W2 of the second section 32 can be smaller than the first structural width W1 of the first section 30 and the third structural width W3 of the third section 34. The first structural width W1 can be greater than, equal to, or less than the third structural width W3. The outer contour of the first section 30 can be designed as a curved surface structure to facilitate the insertion of the elastic arm unit of the hard substrate 26. In this embodiment, as shown in FIG. Figure 5 As shown, the boundary between the second section 32 and the third section 34 has a curved surface structure to support the elastic arm unit of the rigid substrate 26 and prevent it from falling. In another embodiment, the boundary between the second section 32 and the third section 34 has a stepped structure (not shown); the present disclosure is not limited to this. In addition, the rigid substrate 26 may include a through-hole structure 36 and a support structure 38. One end of the support structure 38 is connected to the edge of the through-hole structure 36. In this embodiment, one end of the support structure 38 is connected to the wall of the through-hole structure 36. For example, one end of the support structure 38 is connected to the wall of the through-hole structure 36 by bonding or other means. Alternatively, the through-hole structure 36 and the support structure 38 are formed as an integral structure by directly excavating a hole in the rigid substrate 26. In another embodiment, the support structure 38 can also be in the form of a sheet and fixed to one side of the rigid substrate 26 at the edge by bonding, fastening, or other means. In other words, for example, the support structure 38 and the flexible printed circuit board 24 can be fixed to opposite sides of the rigid substrate 26, but practical applications are not limited to this. Based on the above, the other end of the support structure 38 is free, so the support structure 38 can be considered as an elastic arm unit that is sleeved on the positioning member 22.

[0040] Furthermore, the support structure 38 may include a plurality of elastic arm units arranged symmetrically, wherein the plurality of elastic arm units may be arranged in a centrally symmetrical manner or in an axially symmetrical manner, and the present disclosure is not limited thereto. Each elastic arm unit includes an arc portion 42, and one end of the arc portion 42 may be directly or indirectly connected to the edge of the through-hole structure 36; in the present embodiment, each elastic arm unit further includes a connecting portion 40, and the two opposite ends of the connecting portion 40 are respectively connected to the edge of the through-hole structure 36 and one end of the arc portion 42; in another embodiment, one end of the arc portion 42 is connected to the edge of the through-hole structure 36, and the present disclosure is not limited thereto. The other end of the above-mentioned arc portion 42 is adjacent to one end of the other elastic arm unit; preferably, the other end of the arc portion 42 is also separated from one end of the other elastic arm unit to form a gap, that is, as Figure 6As shown, the two elastic arm units of the support structure 38 can form a restraint ring, and the gap between the two elastic arm units enables the restraint ring to movably fit on the second section 32 of the positioning member 22, for example, the restraint ring can be elastically clamped on the second section 32, but the actual application is not limited thereto. The radial dimension of the restraint ring is smaller than the first structure width W1 and the third structure width W3, and in a preferred embodiment, the radial dimension of the restraint ring is greater than the second structure width W2. When the positioning member 22 is abutted against the rigid substrate 26 for fitting, the two elastic arm units of the support structure 38 are first expanded by the pressure of the positioning member 22, so that the first section 30 of the positioning member 22 can pass through the restraint ring; then, the two elastic arm units of the support structure 38 are elastically returned to the initial state to locate on the second section 32 of the positioning member 22, thereby achieving the purpose of fixing the positioning member 22.

[0041] Referring to Figure 7 , Figure 7 A schematic view of the rigid substrate 26A of another embodiment of the present application is shown. In this embodiment, elements with the same reference numerals as those in the previous embodiments have the same structure and function, which will not be repeated here. The rigid substrate 26A of this embodiment can include a through-hole structure 36 and a support structure 38A. The support structure 38A can be further divided into a connecting portion 40 and a C-shaped portion 44. The two opposite ends of the connecting portion 40 are connected to the edges of the through-hole structure 36 and the C-shaped portion 44, respectively. The restraint ring formed by the support structure 38A is also fitted to the second section 32 of the positioning member 22 by its elastic recovery property to achieve the fixing purpose.

[0042] In summary, the flexible circuit board is flexible and can be assembled in a bent or folded manner, and its light weight and thin thickness meet the lightweight design requirements of the unmanned aerial vehicle device. Therefore, the circuit board connecting mechanism applied to the unmanned aerial vehicle device can avoid the accidental breakage or shedding of the flexible circuit board caused by the instantaneous shaking of the unmanned aerial vehicle device during flight. The circuit board connecting mechanism of the present application uses a positioning member with a narrower middle section than the two end sections, and a rigid substrate with a support structure having an elastic recovery property combined with a flexible circuit board, which can provide multi-axis dynamic adjustment as the flight angle of the unmanned aerial vehicle device changes, effectively preventing the flexible circuit board from being damaged due to the violent shaking of the unmanned aerial vehicle device.

[0043] The present application has been described by the above-mentioned embodiments, however, the above-mentioned embodiments are only examples for implementing the present application. It must be pointed out that the disclosed embodiments do not limit the scope of the present application. On the contrary, modifications and improvements made without departing from the spirit and scope of the present application are within the scope of the patent protection of the present application.

Claims

1. A circuit board connection mechanism, characterized in that: Includes: base plate; At least one positioning member is disposed on the base plate, the positioning member having a first section, a second section, and a third section connected in sequence, the third section being connected to the base plate, and a second structural width of the second section being smaller than a first structural width of the first section and a third structural width of the third section; Flexible printed circuit boards; as well as A hard substrate, the interface portion of the flexible circuit board is arranged on the hard substrate, the hard substrate includes a through-hole structure and a support structure, the end of the support structure is connected to the edge of the through-hole structure, and the restraint ring formed by the support structure can be movably sleeved on the second section, and the radial dimension of the restraint ring is smaller than the first structure width and the third structure width.

2. The circuit board connection mechanism according to claim 1, wherein: The radial dimension of the restraint ring is greater than the second structural width.

3. The circuit board connection mechanism according to claim 1, wherein: The outer contour of the first section of the positioning member is a curved surface structure, and the boundary between the second section and the third section has a curved surface or a step difference structure.

4. The circuit board connection mechanism according to claim 1, wherein: The supporting structure includes a connecting portion and a C-shaped portion. Two opposite ends of the connecting portion are respectively connected to the edge of the through-hole structure and the C-shaped portion.

5. The circuit board connection mechanism according to claim 1, wherein: The support structure includes a plurality of elastic arm units arranged symmetrically, one end of the arc portion of each elastic arm unit is connected to the edge of the through hole structure, and the other end of the arc portion is adjacent to one end of the arc portion of another elastic arm unit.

6. The circuit board connection mechanism according to claim 1, wherein: The circuit board connection mechanism further comprises a reset element, which is arranged between the hard substrate and the bottom plate.

7. The circuit board connection mechanism according to claim 6, wherein: The elastic deformation direction of the restoration member is parallel to the plane normal vector of the hard substrate.

8. The circuit board connection mechanism according to claim 6, wherein: The reset element is a spiral compression spring or an S-shaped compression spring.

9. The circuit board connection mechanism according to claim 6, wherein: The circuit board connection mechanism further comprises a plurality of positioning members, and the reset member is arranged between the plurality of positioning members.

10. A drone device, characterized in that: Includes: case; a rotor mechanism, disposed outside the housing; a drive module electrically connected to the rotor mechanism and located in the housing; and According to any one of claims 1 to 9, the circuit board connecting mechanism is located in the housing, and the bottom plate of the circuit board connecting mechanism is used to support the driving module.

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