WO2018032723A1 - 一种无人机、无人机外壳的成型模具及成型工艺 - Google Patents

一种无人机、无人机外壳的成型模具及成型工艺 Download PDF

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Publication number
WO2018032723A1
WO2018032723A1 PCT/CN2017/070782 CN2017070782W WO2018032723A1 WO 2018032723 A1 WO2018032723 A1 WO 2018032723A1 CN 2017070782 W CN2017070782 W CN 2017070782W WO 2018032723 A1 WO2018032723 A1 WO 2018032723A1
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WO
WIPO (PCT)
Prior art keywords
bone
outer layer
positioning
motor
casing
Prior art date
Application number
PCT/CN2017/070782
Other languages
English (en)
French (fr)
Inventor
宋怡彪
姜少君
刘春林
罗维
任政威
钟波
Original Assignee
前海星航（深圳）科技有限公司
宋怡彪
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201610668459.8A external-priority patent/CN106240789A/zh
Priority claimed from CN201610668739.9A external-priority patent/CN106239813A/zh
Priority claimed from CN201610668889.XA external-priority patent/CN106042240A/zh
Application filed by 前海星航（深圳）科技有限公司, 宋怡彪 filed Critical 前海星航（深圳）科技有限公司
Publication of WO2018032723A1 publication Critical patent/WO2018032723A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
    • B64U60/00—Undercarriages
    • B64U60/50—Undercarriages with landing legs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/22—Component parts, details or accessories; Auxiliary operations
    • B29C39/26—Moulds or cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
    • B64U20/00—Constructional aspects of UAVs
    • B64U20/70—Constructional aspects of the UAV body
    • B64U20/75—Constructional aspects of the UAV body the body formed by joined shells or by a shell overlaying a chassis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
    • B64U10/00—Type of UAV
    • B64U10/10—Rotorcrafts
    • B64U10/13—Flying platforms
    • B64U10/14—Flying platforms with four distinct rotor axes, e.g. quadcopters

Definitions

  • the invention relates to the field of drones, in particular to an outer casing comprising an integrally connected thin skin outer layer, a lightweight middle layer and an inner keel, a molding die of the unmanned aircraft outer casing, and an unmanned aerial vehicle casing. Molding process.
  • the prior art unmanned aerial vehicle includes a fuselage and a wing arm, and the fuselage and the wing arm are separately formed.
  • the wing arm needs to be mounted on the body; and the inner keel bracket is in the outer casing. After molding, it is installed by fasteners or other means.
  • This design not only makes the installation procedure of the drone too complicated during use, but also displays various installation traces such as fasteners on the appearance of the mounted drone. The installation traces that affect the appearance of the drone, resulting in poor appearance of the drone.
  • the present invention provides a drone that aims to reduce the installation process of the drone and improve the appearance of the drone.
  • the invention provides a drone, comprising a casing, wherein the casing has a layered structure, including a thin outer layer, a light middle layer and an inner keel;
  • the inner keel includes a frame bone located at a center of the outer casing and a plurality of motor bones distributed around the outer periphery of the frame bone;
  • the lightweight middle layer integrates the frame-shaped bone into a plurality of motor bones in a radial manner
  • the outer layer of the thin skin is coated on the outer surface of the lightweight intermediate layer.
  • the inner keel is injection molded from a hard material; the lightweight middle layer is injection molded from a lightweight material; and the thin outer layer is made of a hard material.
  • the lightweight middle layer includes a first embedding portion; the first embedding portion is embedded in a frame of the frame-shaped bone and defines a central cavity with the frame-shaped bone; the central cavity is for housing The circuit part of the drone.
  • the opening of the central cavity is upward; the opening of the central cavity is square.
  • the lightweight middle layer further includes a plurality of second embedding portions; each of the second embedding portions is embedded in a frame of a motor bone and encloses a motor bin with the motor bone; the motor bin is for housing a motor.
  • the opening of the motor compartment is upward; the opening of the motor compartment is in the shape of a plum, including a plurality of large arcs and a plurality of small arcs; the large arc and the small arc are spaced apart from each other; the large circle The arc is adapted to the outer surface of the motor.
  • the drone further includes an upper cover, and the upper cover is disposed at an opening of the central cavity through a sealing ring to seal the central cavity.
  • the drone further includes a pair of bracket legs, the bracket legs are mounted under the outer casing; the outer casing is provided with a through hole corresponding to the position of the bracket legs, the through hole and the center The cavity communicates; a fastener passes through the through hole to secure the bracket foot to the frame bone; the bracket foot is used to erect the drone.
  • bracket leg comprises a support portion and two connecting portions; the two connecting portions respectively extend obliquely from the end of the supporting portion toward the outer casing, and the distance between the two connecting portions is from the outer casing
  • the support portion is gradually increased; the width of the connecting portion is gradually widened from the support portion to the outer casing.
  • the invention also proposes a molding die for the outer casing of the drone, which aims to form an outer casing of the unmanned machine integrally formed by the thin outer layer, the light middle layer and the inner keel.
  • the invention provides a molding die for an outer casing of an unmanned aerial vehicle, comprising an upper die and a lower die, wherein an inner wall surface of the upper die and an inner wall surface of the lower die surround the molding cavity;
  • a keel positioning portion is disposed in the cavity, and the keel positioning portion is configured to detachably install an inner keel of the unmanned aircraft casing;
  • An outer layer positioning portion is disposed on an inner wall surface of the cavity, and the outer layer positioning portion is configured to detachably mount a thin outer layer of the outer casing of the drone;
  • the lightweight material is injected into the cavity to form a drone shell formed of a thin outer layer, a lightweight middle layer composed of a lightweight material, and an inner keel.
  • the lightweight material is an EPS foam material
  • the thin skin outer layer and the inner keel are both plastic materials.
  • the cavity is butterfly-shaped and includes a central cavity and a plurality of arm cavities; the central cavity is square and located at a central position of the cavity, and each arm cavity is from a corner of the central cavity The distal end extends radially.
  • the keel positioning portion is mounted on an inner wall surface of the upper mold;
  • the keel positioning portion includes a frame-shaped bone positioning block located in the central cavity and a plurality of motors distributed near the end position of each arm cavity a bone positioning block;
  • the inner keel includes a frame bone and a plurality of motor bones;
  • the frame bone positioning block is configured to mount the frame bone; and
  • the motor bone positioning block is mounted to position the motor bone.
  • the motor bone positioning block includes a connecting portion and a mounting portion; an outer surface of the mounting portion is in contact with an inner surface of the motor bone; and the connecting portion is connected between the mounting portion and an inner wall surface of the upper mold, The outer surface of the joint is similar to the outer surface of the motor bone.
  • the outer layer of the thin skin is composed of an upper outer layer and a lower outer layer; an inner wall surface of the upper mold is adhered to an outer surface of the upper outer layer; an inner wall surface of the lower mold and the lower outer layer The outer surface fits.
  • the outer positioning portion includes a plurality of positioning posts and a plurality of positioning protrusions disposed on an inner wall surface of the lower mold; the positioning protrusions are located in the central cavity, and each positioning post is disposed at an end of each of the arm chambers
  • the position of the lower outer layer corresponding to the positioning post is provided with a positioning hole, the positioning post is inserted into the positioning hole; the lower outer layer is provided with a positioning groove corresponding to the position of the positioning protrusion, The positioning protrusion is received in the positioning groove.
  • the upper outer layer is provided with a frame-shaped bone opening corresponding to the position of the frame-shaped bone positioning block; the upper outer layer is respectively provided with a motor bone opening corresponding to the positions of the plurality of motor bone positioning blocks;
  • the frame bone opening is sleeved on the frame bone positioning block, and each motor bone opening is sleeved on a motor bone positioning block and positioned on the inner wall surface of the upper mold.
  • a ring edge of the upper mold opposite to the lower die is disposed on the plurality of limit slots, and the position of the lower die corresponding to the limit slot is provided with a plurality of limit blocks; each of the limit blocks is located A limiting slot is connected to connect the upper die and the lower die.
  • the invention is characterized in that a thin skin outer layer and an inner keel are detachably mounted in a cavity of a molding die, and when a lightweight material is injected into the cavity from the injection hole, a thin skin outer layer and a light material are formed.
  • the lightweight mid-layer and inner keel are integrally formed into the UAV shell, and then the outer layer of the thin skin and the inner keel are removed from the cavity to obtain an integrally formed UAV casing.
  • the invention also proposes a molding process for the outer casing of the unmanned aerial vehicle, which aims to form an outer casing of an inner keel, a light middle layer and a thin outer layer integrally formed.
  • the invention provides a molding process for an unmanned aircraft casing, which comprises the following steps:
  • Step 1 The injection mold of the internal keel is made
  • Step 2 making a plastic mold of the outer layer of thin skin
  • Step 3 making an outer shell mold with an inner keel, a lightweight middle layer and a thin outer layer;
  • Step 4 Injection molding the plastic into an injection mold to form an internal keel
  • Step 5 absorbing plastic sheets in a plastic mold to form a thin outer layer
  • Step 6 The inner keel and the outer layer of the thin skin are respectively detachably installed in the shell mold, and the lightweight material is injected into the shell mold to form an inner keel, a light middle layer composed of a light material, and an outer layer of a thin skin.
  • Machine casing The inner keel and the outer layer of the thin skin are respectively detachably installed in the shell mold, and the lightweight material is injected into the shell mold to form an inner keel, a light middle layer composed of a light material, and an outer layer of a thin skin. Machine casing.
  • the outer casing mold is a foaming mold.
  • the lightweight material is an EPS foam material.
  • step 6 the foaming mold is in a vacuum state during operation.
  • step 6 the EPS foaming material is injected into the foaming mold under preselected injection temperature and pressure conditions.
  • the injection temperature is in the range of 100 degrees to 130 degrees.
  • the present invention simplifies the installation process of the drone by integrally connecting the thin skin outer layer, the lightweight middle layer and the inner keel; at the same time, the integrally formed design also makes the appearance of the drone The effect is significantly improved.
  • the invention is designed such that the central cavity is sealed by the design of the upper cover and the sealing ring, thereby ensuring the waterproof sealing of the circuit portion located inside the central cavity and preventing the circuit from being corroded.
  • the present invention is formed by injection molding a lightweight intermediate layer using a lightweight material, and the lightweight material has good buoyancy, which is advantageous for the drone to float on the water.
  • the invention is characterized in that a thin skin outer layer and an inner keel are detachably mounted in a cavity of a molding die, and when a lightweight material is injected into the cavity from the injection hole, a thin skin outer layer and a light material are formed.
  • the lightweight mid-layer and inner keel are integrally formed into the UAV shell, and then the outer layer of the thin skin and the inner keel are removed from the cavity to obtain an integrally formed UAV casing.
  • the invention installs the thin outer layer and the inner keel in a foaming mold in advance, and then injects the lightweight material into the outer shell mold to form an inner middle keel, a light middle layer composed of a light material, and a thin outer layer integrally formed.
  • the outer casing of the drone so that the formed drone shell can float on the water; at the same time, the integral molding of the outer casing also reduces many unnecessary installation processes of the drone; further, the integral molding of the outer casing also makes the unmanned The exterior of the machine casing is beautiful.
  • Figure 1 is a perspective view of the drone of the present invention
  • Figure 2 is an exploded perspective view of Figure 1;
  • FIG. 3 is a schematic structural view of the lightweight middle layer of FIG. 1;
  • Figure 4 is a schematic view showing the connection between the lightweight middle layer and the inner keel of Figure 2;
  • Figure 5 is a schematic view showing the principle of the circuit portion of the unmanned aerial vehicle of the present invention.
  • Figure 6 is a cross-sectional view showing the molding die of the UAV housing of the present invention.
  • Figure 7 is a first perspective perspective view of a molding die of the UAV housing of the present invention.
  • Figure 8 is a perspective view showing the second angle of the molding die of the UAV casing of the present invention.
  • Figure 9 is a schematic structural view of the upper mold of Figure 6;
  • Figure 10 is a schematic structural view of the lower mold of Figure 6;
  • Figure 11 is a schematic view showing the structure of an unmanned machine casing formed by a molding die of the present invention.
  • Figure 12 is a schematic view showing the structure of the inner keel of the outer casing of the drone
  • Figure 13 is a schematic view showing the structure of the upper and outer layers of the thin skin outer layer of the outer casing of the drone;
  • Figure 14 is a schematic view showing the structure of the lower outer layer of the outer layer of the outer skin of the drone casing.
  • the drone provided by the specific embodiment of the present invention is an all-weather drone that can be used for landing and water work in the water.
  • the drone includes an outer casing 1, an upper cover 2 and a bracket foot 3 as seen from the outside.
  • the outer casing 1 has a layered structure, which comprises a thin outer layer 1-1, a light middle layer 1-2 and an inner dragon. Bone 1-3.
  • the thin skin outer layer 1-1, the light middle layer 1-2 and the inner keel 1-3 are integrally connected.
  • the drone further includes a circuit portion 4, four motors 5, and four propellers (not shown).
  • the circuit portion 4 and the four motors 5 are respectively mounted in the outer casing 1.
  • the circuit portions 4 are electrically connected to the four motors 5 and control the rotation of the motor 5; each propeller is mounted on the output shaft of a motor 5,
  • the motor 5 rotates to control the rotation of the propeller, and the propeller rotates to take off the drone.
  • the inner keel 1-3 includes a frame-shaped bone 1-3-1 located at a center position of the outer casing 1 and four motors distributed around the outer periphery of the frame-shaped bone 1-3-1.
  • the frame bones 1-3-1 are used to mount the circuit portion 4, and each of the motor bones 1-3-2 is used to mount a motor 5.
  • the number of the motor bones 1-3-2, the motor 5, and the propeller may be three or other numbers as long as the drone can be normally operated.
  • the lightweight intermediate layer 1-2 integrally connects the frame-shaped bone 1-3-1 to the four motor bones 1-3-2 in a radial manner.
  • the lightweight middle layer 1-2 includes an integrally connected covering portion 1-2-1, a first embedded portion 1-2-2, and four second embedded portions 1-2-3. .
  • the covering portion 1-2-1 has a butterfly shape.
  • the covering portion 1-2-1 is coated on the outer circumference of the inner keel 1-3 and the frame bone 1-3-1 to the four motor bones 1-3-2 are presented. The radial connection is integrated.
  • the first embedding portion 1-2-2 is embedded in the frame of the frame-shaped bone 1-3-1 and encloses a central cavity 1-4 with the frame-shaped bone 1-3-1.
  • the circuit portion 4 is mounted on the frame bone 1-3-1 and housed in the central cavity 1-4.
  • the opening of the central cavity 1-4 is upward; the opening of the central cavity 1-4 is square.
  • each second embedding portion 1-2-3 is embedded in a frame of a motor bone 1-3-2 and encloses a motor bin 1-5 with the motor bone 1-3-2, the motor 5 is mounted on the motor bone 1-3-2 and housed in the motor compartment 1-5.
  • the opening of the motor, 1-5 is upward; the opening of the motor compartment 1-5 is plum-shaped, including a plurality of large arcs 1-5-1 and a plurality of small arcs 1-5
  • the large arc 1-5-1 and the small arc 1-5-2 are spaced apart from each other; the large arc 1-5-1 is adapted to the outer surface of the electric machine.
  • first embedding portion 1-2-2 and the second embedding portion 1-2-3 are designed such that the connection between the inner keel 1-3 and the lightweight middle layer 1-2 is closer.
  • the structure of the outer casing 1 in this patent is made more compact.
  • the thin skin outer layer 1-1 is coated on the outer surface of the lightweight intermediate layer 1-2.
  • the thin skin outer layer 1-1, the light middle layer 1-2 and the inner keel 1-3 are first integrally formed, and then the circuit parts 4 and 4 are
  • the motor 5 is respectively mounted on the inner keel 1-3, and the outer layer 1-1 is not required to be installed, and the inner keel 1-3 is not required to be installed, thereby simplifying the installation process of the drone;
  • the molded design also makes the appearance of the drone significantly improved.
  • the inner keel 1-3 is injection molded from a hard material
  • the lightweight middle layer 1-2 is injection molded from a lightweight material
  • the thin outer layer 1-1 is sucked by a hard material.
  • Plastic is
  • the inner keel 1-3 is injection molded from plastic; the lightweight middle layer 1-2 is injection molded from an EPS foam material; the thin outer layer 1-1 is sucked by plastic Plastic.
  • the outer casing 1 of the drone in this case is a layered mechanism, which is a thin outer layer 1-1, a light middle layer 1-2 and an inner keel 1-3, but the forming and forming of the three structures The method is not the same.
  • the lightweight middle layer 1-2 is injection molded by EPS foaming, and the foaming foam has good buoyancy, and at the same time, the volumetric component of the light middle layer 1-2 is the largest, and the bulk buoyancy is good. Therefore, the design of the lightweight middle layer 1-2 in the present case is advantageous for the drone to float on the water, thereby ensuring that the drone can work freely on the water.
  • the thin outer layer 1-1 and the inner keel 1-3 are made of plastic materials, so that not only the unmanned The characteristics of the machine floating on the water also make the life of the drone longer.
  • the drone further includes an upper cover 2, and the upper cover 2 is covered by the sealing ring 6 at the opening of the central cavity 1-4 to seal the central cavity 1 -4. Because the drone in this case is suitable for water work, the waterproof effect must be good, and in the present case, the design of the upper cover 2 and the sealing ring 6 makes the central cavity 1-4 sealed, thereby ensuring the location. The waterproof sealing of the circuit portion 4 inside the central cavity 1-4 prevents the circuit portion 4 from being corroded.
  • the drone further includes a pair of bracket legs 3, and the bracket legs 3 are mounted on the Below the outer casing 1.
  • the outer casing 1 is provided with a through hole (not shown) corresponding to the position of the bracket leg 3, and the through hole communicates with the central cavity 1-4.
  • a fastener is passed through the through hole to secure the bracket foot 3 to the frame bone 1-3-1.
  • the bracket foot 3 is used to erect the drone.
  • the bracket leg 3 includes a support portion 3-1 and two connecting portions 3-2, and the two connecting portions 3-2 respectively extend from the end of the supporting portion 3-1.
  • the outer casing 1 extends obliquely to the arc, and the distance between the two connecting portions 3-2 gradually increases from the outer casing 1 to the support portion 3-1.
  • Such a design makes the contact surface between the support portion 3-1 of the bracket leg 3 and the ground larger, and the support support strength is greater.
  • the design of the arc also makes the appearance of the bracket leg 3 more beautiful.
  • the width of the connecting portion 3-2 is gradually widened from the support portion 3-1 to the direction of the outer casing 1.
  • the outer casing 1 is provided with four through holes corresponding to the pair of bracket legs 3.
  • a pair of bracket legs 3 are symmetrically disposed under the drone to support the drone, the support portion 3-1 is disposed on the ground, and the connecting portion 3-2 is directly The outer casing 1 is connected.
  • the motor 5 is a waterproof brushless motor.
  • the unmanned aerial vehicle is exposed except for the motor 5 and the propeller, and other parts such as the circuit portion 4 are sealed in the central cavity 1-4, so that the motor 5 is protected from water corrosion.
  • the motor 5 in this case uses a waterproof brushless motor.
  • the circuit portion 4 is sealingly disposed in the central cavity 1-4.
  • the circuit portion 4 includes a main control board 4-1, a power supply 4-2, a WIFI module 4-3, and an external input module 4-4; the power supply 4-2, the WIFI module 4-3, and the external The input module 4-4 and the motor 5 are electrically connected to the overall control board 41, respectively.
  • the external input module 4-4 includes a USB base and a T-seat.
  • the molding die of the UAV housing provided by the embodiment of the present invention includes an upper die 7 and a lower die 8.
  • the inner wall surface of the upper mold 7 and the inner wall of the lower mold 8 surround the molding cavity 9.
  • the molding die further includes an injection hole 10 penetrating the upper die 7 and communicating with the cavity 9 .
  • the upper mold 7 and the lower mold 8 are both square.
  • the cavity 9 has a butterfly shape and includes a central cavity 9-1 and four arm cavities 9-2; the central cavity 9-1 is square and located in the cavity 9. In the center position, each arm cavity 9-2 extends radially from one corner of the central cavity 9-1 to the distal end.
  • the design point 1 of the present invention is that, referring to FIG. 14, the cavity 9 is provided with a keel positioning portion 7-1 for detachably mounting the inside of the UAV housing. Keel 11.
  • the keel positioning portion 7-1 is disposed in the cavity 9 and is mounted on an inner wall surface of the upper mold 7 .
  • the keel positioning portion 7-1 includes a frame-shaped bone positioning block 7-1-1 located at the center of the upper mold 7, and four motor bone positioning blocks 7 distributed around the periphery of the frame-shaped bone positioning block 7-1-1. 1-2.
  • the frame-shaped bone positioning block 7-1-1 is located in the central cavity 9-1, and each of the motor bone positioning blocks 71-2 is located at a position near the end of one arm cavity 9-2.
  • the inner keel 11 includes a frame bone 11-1 and four motor bones 11-2; the frame bone positioning block 7-1-1 is used to mount the frame bone 11-1; The motor bone positioning block 71-2 is used to mount the motor bone 11-2.
  • the frame bone 11-1 is a circuit portion for installing a drone
  • the motor bone 11-2 is a motor for installing a drone.
  • the motor bone positioning block 7-1-2 includes a connecting portion 71-2-2 and a mounting portion 7-1-2-1; the mounting portion 7-1
  • the outer surface of the -2-1 is bonded to the inner surface of the motor bone 11-2;
  • the connecting portion 7-1-2-2 is connected between the mounting portion 7-1-2-1 and the inner wall surface of the upper mold 7.
  • the outer surface of the connecting portion 7-1-2-2 is similar to the outer surface contour of the motor bone 11-2.
  • the design point 2 of the present invention is that, referring to FIG. 14, the inner wall surface of the cavity 9 is provided with an outer layer positioning portion. Specifically, the structure of the outer layer positioning portion is specifically described below in combination with the structure of the outer layer 13 of the thin skin. .
  • the outer positioning portion is for detachably mounting the thin skin outer layer 13 of the drone housing.
  • the thin outer layer 13 is composed of an upper outer layer 13-1 and a lower outer layer 13-2, and the inner wall surface of the upper mold 7 and the upper outer layer The outer surface of the 13-1 is bonded; the inner wall surface of the lower mold 8 is lower than the lower surface The outer surface of the outer layer 13-2 is attached.
  • the lower outer layer 13-2 is positioned on the lower mold 8 by the following method.
  • the outer layer positioning portion includes four positioning posts 8-1 and four positioning protrusions 8-3 disposed on the inner wall surface of the lower die 8; please refer to FIG.
  • the outer layer 13-2 is provided with a positioning hole 13-2-1 corresponding to the position of the positioning post 8-1, and the positioning post 8-1 is inserted into the positioning hole 13-2-1.
  • the lower outer layer 13-2 is provided with a positioning groove 13-2-2 corresponding to the positioning protrusion 8-3, and the positioning protrusion 8-3 is received in the positioning groove 13- Within 2-2. Thereby the lower outer layer 13-2 is positioned on the lower die 8.
  • each of the positioning posts 8-1 is located at a position near the end of one arm cavity 9-2.
  • the upper outer layer 13-1 is respectively provided with a frame-shaped bone corresponding to the position of the frame-shaped bone positioning block 7-1-1 and the four motor bone positioning blocks 7-1-2. Opening 13-1-1 and motor bone opening 13-1-2, the upper outer layer 13-1 is sleeved on the frame-shaped bone positioning block 7-1-1 by placing the frame-shaped bone opening 13-1-1 The motor bone opening 13-1-2 is sleeved on the motor bone positioning block 7-1-2 and positioned on the inner wall surface of the upper mold 7.
  • the thin skin outer positioning portion specifically includes four positioning posts 8-1 and four positioning protrusions 8-3 on the inner wall surface of the lower die 8, and a frame-shaped bone positioning block located on the upper die 7. 7-1-1 and 4 motor bone positioning blocks 7-1-2.
  • the present invention is formed by detachably mounting a thin skin outer layer 13 and an inner keel 11 in the cavity 9 of the molding die, and then forming a lightweight material into the cavity 9 from the injection hole 10,
  • the outer layer of the unmanned aerial body formed by the thin outer layer 13 and the lightweight intermediate layer 12 composed of the lightweight material and the inner keel 11 is then integrally formed by detaching the thin outer layer 13 and the inner keel 11 from the cavity 9. UAV enclosure.
  • the molding die of the present invention is formed by an outer casing of a thin skin outer layer 13, a lightweight intermediate layer 12 and an inner keel 11 integrally formed, and has a great improvement with the single-layer structure formed by the prior art mold. It can make the product composed of the layered structure reduce many complicated installation processes, and also make the connection between the layered structures more compact and firm.
  • the molding die of the present invention is formed by an outer casing of an unmanned machine integrally formed of a thin outer layer 13, a lightweight intermediate layer 12 and an inner keel 11.
  • the light middle layer 12 has good light buoyancy, and the volumetric component of the light middle layer 12 has the largest buoyancy. Therefore, the UAV shell formed by the molding die in this case is beneficial to the drone floating on the water and guarantees no one.
  • the machine works freely on the water.
  • the design of the outer layer 13 of the thin skin not only gives the connection strength of the outer casing of the drone, but also makes the appearance of the outer casing of the drone beautiful.
  • the internal skeleton is designed so that the drone housing has a position for mounting other circuit parts or motors.
  • the lightweight material is an EPS foam material
  • the thin skin outer layer 13 and the inner keel 11 are both made of plastic material.
  • the foaming buoyancy of the EPS foaming material is good, which is beneficial to the drone floating on the water and ensuring that the drone can work freely on the water.
  • the thin skin outer layer 1311 and the inner keel 11 are all made of plastic materials, so that the drone can be ensured not only in the The floating characteristics on the water also make the life of the drone longer.
  • the upper mold 7 and the lower mold 8 are positioned and clamped by the following method.
  • a ring edge of the upper mold 7 opposite to the lower die 8 is disposed on the four limiting slots 7 - 2 .
  • the lower die 8 corresponds to the limiting slot 7 -
  • the position of 2 is provided with four limiting blocks 8-2; please refer to FIG. 2 or FIG. 13 , and each limiting block 8-2 is limited to one limiting slot 7-2 to connect the upper die 7 and the lower die 8.
  • Step 1 The injection molding of the internal keel is made.
  • Step 2 Making a plastic mold for the outer layer of thin skin.
  • Step 3 The inner keel, the light middle layer and the outer layer of the thin skin are integrally molded.
  • FIG. 11 is a structural schematic diagram of the outer casing mold.
  • the outer casing mold is a foaming mold.
  • the foaming mold includes an upper mold 1 and a lower mold 8, an inner wall surface of the upper mold 1 and an inner wall of the lower mold 8.
  • the face forms a cavity.
  • the cavity is provided with an inner keel positioning portion 7-1 for positioning the inner keel 1-3 and a thin outer layer positioning portion for positioning the thin outer layer 1-1.
  • the internal keel positioning portion 7-1 is disposed on the upper mold 7, and the internal keel positioning portion 7-1 further includes a frame-shaped bone positioning block 7-1 located at the center of the cavity. -1 and 4 motor bone positioning blocks 71-2 distributed around the periphery of the frame-shaped bone positioning block 7-1-1.
  • the thin outer layer positioning portion is disposed on the lower mold 8, and the thin outer layer positioning portion includes four positioning posts 8-1 and four positioning protrusions 8-3.
  • Step 4 Injection molding the plastic into an injection mold to form an internal keel
  • FIG. 12 is a schematic structural view of the inner keel 1-3.
  • the inner keel 1-3 is made of a hard material.
  • the inner keel is made of plastic.
  • the inner keel 1-3 includes a frame-shaped bone 1-3-1 located at the center of the inner keel 1-3 and four motor bones 1-3-2 distributed around the periphery of the frame-shaped bone 31. .
  • Step 5 plastic sheet is blister-molded in a plastic mold to form a thin skin outer layer 1-1;
  • the thin skin outer layer 1-1 is made of a hard material. In the present embodiment, the thin skin outer layer 1-1 is made of plastic.
  • the thin skin outer layer 1-1 includes an upper outer layer 13-1 and a lower outer layer 13-2.
  • Step 6 The inner keel 1-3 and the thin skin outer layer 1-1 are respectively detachably mounted in the outer casing mold. Specifically, the frame bone 1-3-1 is mounted on the frame bone positioning block 7-1-1, and each motor bone 1-3-2 is mounted with a motor bone positioning block 7-1. -2 on.
  • the upper outer layer 13-1 is attached to the inner wall surface of the upper mold 7. Specifically, the upper outer layer 13-1 is formed by the frame-shaped bone positioning block 7-1-1 and the motor bone positioning block 7. -1-2 is positioned on the inner wall surface of the upper mold 7.
  • the lower outer layer 13-2 is attached to the inner wall surface of the lower mold 8 through four positioning posts 8-1 and four positioning protrusions 8-3; and the lightweight material is injected into the outer casing mold to form the inner keel 1 -3, a lightweight intermediate layer 1-2, a thin skin outer layer 1-1 integrally formed drone shell.
  • the unmanned aerial shell of the inner keel 1-3, the lightweight middle layer 1-2 and the thin outer layer 1-1 Please refer to FIG. 11 for the unmanned aerial shell of the inner keel 1-3, the lightweight middle layer 1-2 and the thin outer layer 1-1.
  • the light middle layer 1-2 mass light buoyancy is good, and the volumetric component of the light middle layer 1-2 part has the best buoyancy, so the drone shell formed by the molding die in this case is beneficial to the drone floating on the water, and The drone is guaranteed to work freely on the water.
  • the design of the thin skin outer layer 1-1 not only gives the connection strength of the outer casing of the drone, but also makes the outer appearance of the outer casing of the drone beautiful.
  • the internal keel 1-3 is designed so that the drone housing has a position for mounting other circuit parts or motors. At the same time, the integral molding of the drone housing also reduces many steps in the installation process of the drone.
  • the lightweight material is an EPS foam material.
  • the foaming mold is in a vacuum state during operation.
  • the EPS foamed material is injected into the foaming mold under conditions of a predetermined injection temperature and pressure.
  • the injection temperature is in the range of 100 degrees to 130 degrees.

Abstract

一种无人机、无人机外壳的成型模具及成型工艺，该无人机包括外壳，所述外壳（1）呈层状结构，包括薄皮外层（1-1）、轻质中层（1-2）及内部龙骨（1-3）；所述内部龙骨（1-3）包括位于外壳（1）中心位置的框形骨（1-3-1）及分布在框形骨（1-3-1）外围的若干电机骨（1-3-2）；所述轻质中层（1-2）将框形骨（1-3-1）到若干电机骨（1-3-2）呈放射状的连接为一体；所述薄皮外层（1-1）包覆在所述轻质中层（1-2）的外表面。无人机的外壳（1）呈层状结构并一体连接，使得无人机的安装过程简单化。

Description

一种无人机、无人机外壳的成型模具及成型工艺 技术领域
本发明涉及无人机领域，具体是指一种外壳包括一体连接的薄皮外层、轻质中层及内部龙骨的无人机,一种无人机外壳的成型模具,以及一种无人机外壳的成型工艺。
背景技术
近年来，无人机以其简单的结构、方便的操控及较高的安全性能等特点受到越来越多的重视。现有技术中的无人机，包括机身及翼臂，且其机身和翼臂是分开成型的，使用时需要将翼臂安装于机身上；同时其内部的龙骨支架都是在外壳成型之后通过紧固件或其他方式安装上去的，这样的设计不仅使得无人机在使用时安装程序过于复杂，同时，安装后的无人机的外表会出现各种安装痕迹，如紧固件等影响无人机的外观的安装痕迹，从而导致无人机的外观效果差。
发明内容
为了解决上述问题，本发明提出一种无人机，旨在减少无人机的安装过程，及提高所述无人机的外观效果。
本发明通过以下技术方案实现的：
本发明提出一种无人机，包括外壳，所述外壳呈层状结构，包括薄皮外层、轻质中层及内部龙骨；
所述内部龙骨包括位于外壳中心位置的框形骨及分布在框形骨外围的若干电机骨；
所述轻质中层将框形骨到若干电机骨呈放射状的连接为一体；
所述薄皮外层包覆在所述轻质中层的外表面。
进一步的，所述内部龙骨由硬质材料注塑而成；所述轻质中层由轻质材料注塑而成；所述薄皮外层由硬质材料吸塑而成。
进一步的，所述轻质中层包括第一嵌入部；所述第一嵌入部嵌入所述框形骨的边框内并与所述框形骨围成一个中心腔；所述中心腔用于容纳所述无人机的电路部分。
进一步的，所述中心腔的开口向上；所述中心腔的开口呈方形。
进一步的，所述轻质中层还包括若干第二嵌入部；每个第二嵌入部嵌入一个电机骨的边框内并与所述电机骨围成电机仓；所述电机仓用于容纳电机。
进一步的，所述电机仓的开口向上；所述电机仓的开口呈梅花状，包括若干大圆弧及若干小圆弧；所述大圆弧和小圆弧相互间隔连接设置；所述大圆弧与电机的外表面相适配。
进一步的，所述无人机还包括上盖，所述上盖通过密封圈盖设于所述中心腔的开口处以密封所述中心腔。
进一步的，所述无人机还包括一对支架脚，所述支架脚安装于所述外壳的下方；所述外壳对应所述支架脚的位置设有通孔，所述通孔与所述中心腔相通；紧固件穿过所述通孔以将所述支架脚固定在框形骨上；所述支架脚用于架起所述无人机。
进一步的，所述支架脚包括一个支撑部及两个连接部；两个连接部分别自所述支撑部的端部向所述外壳斜向弧线延伸，两个连接部之间的距离从外壳到支撑部逐渐增大；所述连接部的宽度从支撑部到外壳的方向逐渐加宽。
本发明还提出一种无人机外壳的成型模具，旨在成型一种由薄皮外层、轻质中层及内部龙骨一体成型的无人机外壳。
本发明通过以下技术方案实现的：
本发明提出一种无人机外壳的成型模具，包括上模和下模，所述上模的内壁面与下模的内壁面围成型腔；
所述型腔内设有龙骨定位部，所述龙骨定位部用于可拆卸的安装无人机外壳的内部龙骨；
所述型腔的内壁面上设有外层定位部，所述外层定位部用于可拆卸的安装所述无人机外壳的薄皮外层；
轻质材料注入型腔内形成由薄皮外层、轻质材料组成的轻质中层、内部龙骨一体成型的无人机外壳。
进一步的，所述轻质材料为EPS发泡材料，所述薄皮外层及内部龙骨均为塑料材质。
进一步的，所述型腔呈蝴蝶状并包括中心腔及若干臂腔；所述中心腔呈方形并位于所述型腔的中心位置，每个臂腔自所述中心腔的一个边角上向远端呈放射状延伸。
进一步的，所述龙骨定位部装设于所述上模的内壁面上；所述龙骨定位部包括位于中心腔的框形骨定位块及分布于每个臂腔的靠近端部位置的若干电机骨定位块；所述内部龙骨包括框形骨及若干电机骨；所述框形骨定位块用于安装所述框形骨；所述电机骨定位块安装定位电机骨。
进一步的，所述电机骨定位块包括连接部及安装部；所述安装部的外表面与电机骨的内表面贴合；所述连接部连接于安装部与上模的内壁面之间，所述连接部的外表面与电机骨的外表面轮廓相似。
进一步的，所述薄皮外层由上外层及下外层组成；所述上模的内壁面与所述上外层的外表面贴合；所述下模的内壁面与所述下外层的外表面贴合。
进一步的，所述外层定位部包括设于下模的内壁面上的若干定位柱及若干定位凸块；所述定位凸块位于中心腔，每个定位柱设于每个臂腔靠近端部的位置；所述下外层对应定位柱的位置设有定位孔，所述定位柱插设于所述定位孔中；所述下外层对应定位凸块的位置设有定位凹槽，所述定位凸块容纳于所述定位凹槽内。
进一步的，所述上外层对应框形骨定位块的位置设有框形骨开口；所述上外层对应若干电机骨定位块的位置分别开设有电机骨开口；所述上外层通过将框形骨开口套设在框形骨定位块，及将每个电机骨开口套设在一个电机骨定位块上而定位于上模的内壁面上。
进一步的，所述上模的与下模相对的一面的一圈边缘设于若干限位槽，所述下模上对应限位槽的位置设有若干限位块；每一个限位块现位于一个限位槽中以连接所述上模与下模。
本发明的有益效果：
本发明通过在成型模具的型腔内可拆卸的安装有薄皮外层及内部龙骨，当轻质材料从所述注入孔中注入型腔内之后，就会形成由薄皮外层、轻质材料组成的轻质中层、内部龙骨一体成型的无人机外壳，然后把薄皮外层及内部龙骨从型腔中拆卸下来就可以得到一体成型的无人机外壳。
本发明还提出一种无人机外壳的成型工艺，旨在成型一种内部龙骨、轻质中层及薄皮外层一体成型的无人机外壳。
本发明通过以下技术方案实现的：
本发明提出1.一种无人机外壳的成型工艺，其特征在于，包括以下步骤：
步骤1：内部龙骨的注塑模具制作；
步骤2：薄皮外层的吸塑模具制作；
步骤3：内部龙骨、轻质中层及薄皮外层一体成型的外壳模具制作；
步骤4：将塑料注塑到注塑模具中以形成内部龙骨；
步骤5：将塑料板材在吸塑模具中吸塑以形成薄皮外层；
步骤6：将内部龙骨及薄皮外层分别可拆卸的安装于外壳模具中，再将轻质材料注入外壳模具中形成内部龙骨、轻质材料组成的轻质中层、薄皮外层一体成型的无人机外壳。
进一步的，在步骤3中，所述外壳模具是发泡模具。
进一步的，在步骤6中，所述轻质材料是EPS发泡材料。
进一步的，在步骤6中，所述发泡模具在工作时呈真空状态。
进一步的，在步骤6中，所述EPS发泡材料是在预先选定的注入温度和压力的条件下注入发泡模具中的。
进一步的，所述注入温度在100度到130度的范围内。
本发明的有益效果：
1.本发明通过将所述薄皮外层、轻质中层及内部龙骨一体连接的设计，使得所述无人机的安装过程简单化；同时，一体成型的设计也使得所述无人机的外观效果显著提高。
2.本发明通过上盖及密封圈的设计，使得所述中心腔是密封的，从而保证了位于所述中心腔内部的电路部分的防水密封性，防止电路被腐蚀。
3.本发明通过将轻质中层使用轻质材料注塑而成，轻质材料浮力好，有利于所述无人机在水上漂浮。
本发明通过在成型模具的型腔内可拆卸的安装有薄皮外层及内部龙骨，当轻质材料从所述注入孔中注入型腔内之后，就会形成由薄皮外层、轻质材料组成的轻质中层、内部龙骨一体成型的无人机外壳，然后把薄皮外层及内部龙骨从型腔中拆卸下来就可以得到一体成型的无人机外壳。
本发明通过将所述薄皮外层及内部龙骨事先可拆卸地安装于发泡模具中，然后将轻质材料注入外壳模具中形成内部龙骨、轻质材料组成的轻质中层、薄皮外层一体成型的无人机外壳，从而使得成型出的无人机外壳可于水上漂浮；同时，外壳一体成型也减少了无人机很多不必要的安装过程；进一步的，外壳一体成型也使得所述无人机外壳的外表美观。
附图说明
构成本申请的一部分的说明书附图用来提供对本发明的进一步理解，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1为本发明的无人机的立体示意图；
图2为图1的分解示意图；
图3为图1中的轻质中层的结构示意图；
图4为图2中的轻质中层与内部龙骨之间的连接示意图；
图5为本发明的无人机的电路部分的原理示意图；
图6为本发明的无人机外壳的成型模具的剖视示意图；
图7为本发明的无人机外壳的成型模具的第一角度立体示意图；
图8为本发明的无人机外壳的成型模具的第二角度立体示意图；
图9为图6中上模的结构示意图；
图10为图6中下模的结构示意图；
图11为本发明的成型模具形成的无人机外壳的结构示意图；
图12为无人机外壳的内部龙骨的结构示意图；
图13为无人机外壳的薄皮外层的上外层的结构示意图；
图14为无人机外壳的薄皮外层的下外层的结构示意图。
其中，上述附图包括以下附图标记：
1-外壳，2-上盖，3-支架脚，4-电路部分，5-电机，6-密封圈，1-1-薄皮外层，1-2-轻质中层，1-3-内部龙骨，1-4-中心腔，1-5-电机仓，3-1-支撑部，3-2-连接部，4-1-总控制板，4-2-电源，4-3-WIFI模块，4-4-外输入模块，1-2-1-包覆部，1-2-2-第一嵌入部，1-2-3-第二嵌入部，1-3-1-框形骨，1-3-2-电机骨，1-5-1-大圆弧，1-5-2-小圆弧,7-上模，8-下模，9-型腔，10-注入孔，11-内部龙骨，12-轻质中层，13-薄皮外层，7-1-龙骨定位部，7-2-限位槽，8-1-定位柱，8-2-限位块，8-3-定位凸块，9-1-中心腔，9-2-臂腔，11-1-框形骨，11-2-电机骨，13-1-上外层，13-2-下外层，7-1-1-框形骨定位块，7-1-2-电机骨定位块，13-1-1-框形骨开口，13-1-2-电机骨开口，13-2-1-定位孔，13-2-2-定位凹槽，7-1-2-1-安装部，7-1-2-2-连接部。
具体实施方式
为了更加清楚、完整的说明本发明的技术方案，下面结合附图对本发明作进一步说明。
本发明的具体实施方式提供的无人机是一种全天候无人机，可于水中起落，水上作业。
请参考图1，所述无人机从外表看包括外壳1、上盖2及支架脚3。
请参考图2，所述外壳1呈层状结构，分别包括是薄皮外层1-1、轻质中层1-2及内部龙 骨1-3。所述薄皮外层1-1、轻质中层1-2及内部龙骨1-3是一体连接的。
请同时参考图2及图5，所述无人机还包括电路部分4、四个电机5及四个螺旋桨(图中未示出)。所述电路部分4及四个电机5分别安装于外壳1内，所述电路部分4分别与四个电机5电连接并控制电机5的转动；每个螺旋桨安装于一个电机5的输出轴上，电机5转动从而控制螺旋桨转动，螺旋桨转动以是无人机起飞。
请参考图2，在本实施方式中，所述内部龙骨1-3包括位于外壳1的中心位置的框形骨1-3-1及分布在框形骨1-3-1外围的4个电机骨1-3-2。所述框形骨1-3-1用于安装所述电路部分4，每一个电机骨1-3-2用于安装一个电机5。在其他实施方式中，所述电机骨1-3-2、电机5及螺旋桨的个数也可以是3个或其他的个数，只要能使所述无人机正常飞行都可以。
在本实施方式中，所述轻质中层1-2将框形骨1-3-1到4个电机骨1-3-2呈放射状的连接为一体。具体的，请参考图3，所述轻质中层1-2包括一体连接的包覆部1-2-1、第一嵌入部1-2-2及4个第二嵌入部1-2-3。
请参考图3，所述包覆部1-2-1呈蝴蝶状。请参考图4，所述包覆部1-2-1包覆在所述内部龙骨1-3的外周并将所述框形骨1-3-1到4个电机骨1-3-2呈放射状的连接为一体。
请参考图4，所述第一嵌入部1-2-2嵌入所述框形骨1-3-1的边框内并与所述框形骨1-3-1围成一个中心腔1-4，所述电路部分4安装于所述框形骨1-3-1上并容纳于所述中心腔1-4内。
具体的，请参考图4，所述中心腔1-4的开口向上；所述中心腔1-4的开口呈方形。
请参考图4，每个第二嵌入部1-2-3嵌入一个电机骨1-3-2的边框内并与所述电机骨1-3-2围成电机仓1-5，所述电机5安装于所述电机骨1-3-2上并容纳于所述电机仓1-5内。
具体的，请参考图4，所述电机,1-5的开口向上；所述电机仓1-5的开口呈梅花状，包括若干大圆弧1-5-1及若干小圆弧1-5-2；所述大圆弧1-5-1和小圆弧1-5-2相互间隔连接设置；所述大圆弧1-5-1与电5机的外表面相适配。
其中，所述第一嵌入部1-2-2及第二嵌入部1-2-3的设计，使得所述内部龙骨1-3与所述轻质中层1-2之间的连接更加的紧密，使得本专利中的外壳1结构更加的紧密。
在本实施方式中，所述薄皮外层1-1包覆在所述轻质中层1-2的外表面。
由此可见，本发明的无人机在制作过程中，首先将所述薄皮外层1-1、轻质中层1-2及内部龙骨1-3一体连接成型，然后将电路部分4和4个电机5分别安装于所述内部龙骨1-3上即可，无需安装薄皮外层1-1，也无需安装内部龙骨1-3，从而使得所述无人机在安装过程简单化；同时，一体成型的设计也使得所述无人机的外观效果显著提高。
在本实施方式中，所述内部龙骨1-3由硬质材料注塑而成，所述轻质中层1-2由轻质材料注塑而成，所述薄皮外层1-1由硬质材料吸塑而成。
具体的，在本实施方式中，所述内部龙骨1-3由塑料注塑而成；所述轻质中层1-2由EPS发泡材料注塑而成；所述薄皮外层1-1由塑料吸塑而成。
由此可见，本案中的无人机的外壳1呈层状机构，分别为薄皮外层1-1、轻质中层1-2及内部龙骨1-3，但是这三个结构的成型方式及成型方法并不是一样的。其中请参考图2，所述轻质中层1-2是由EPS发泡注塑而成的，发泡泡沫浮力好，同时所述轻质中层1-2部分的体积分量最大，体积大浮力好，因此本案中的轻质中层1-2这样的设计有利于所述无人机在水上漂浮，从而保证了所述无人机在水上作业自如。又因EPS发泡的耐用性、塑性、耐高温及防水性均没有塑料强，因此所述薄皮外层1-1及内部龙骨1-3均采用塑料材料，这样不仅能够在保证所述无人机在水上漂浮的特性同时也使得所述无人机的使用寿命更长。
在本实施方式中，请参考图2，所述无人机还包括上盖2，所述上盖2通过密封圈6盖设于所述中心腔1-4的开口处以密封所述中心腔1-4。因本案中的无人机适用于水上作业，固其防水效果必须很好，而本案中上盖2及密封圈6的设计，使得所述中心腔1-4是密封的，从而保证了位于所述中心腔1-4内部的电路部分4的防水密封性，防止电路部分4被腐蚀。
在本实施方式中，请参考图2，所述无人机还包括一对支架脚3，所述支架脚3安装于所 述外壳1的下方。所述外壳1对应所述支架脚3的位置设有通孔(图中未示出)，所述通孔与所述中心腔1-4相通。把紧固件穿过所述通孔以将所述支架脚3固定在框形骨1-3-1上。所述支架脚3用于架起所述无人机。
具体的，请参考图2，所述支架脚3包括一个支撑部3-1及两个连接部3-2，两个连接部3-2分别自所述支撑部3-1的端部向所述外壳1斜向弧线延伸，两个连接部3-2之间的距离从外壳1到支撑部3-1逐渐增大。这样的设计，使得所述支架脚3的支撑部3-1与地面之间的接触面更大，支撑支撑强度更大。同时，弧线的设计也使得所述支架脚3的外观更美观。
具体的，请参考图2，所述连接部3-2的宽度从支撑部3-1到外壳1的方向逐渐加宽。
在本实施方式中，所述外壳1对应一对支架脚3设有4个通孔。所述无人机落地时，一对支架脚3对称设于所述无人机的下方以支撑无人机，所述支撑部3-1设于地面上，所述连接部3-2直接与外壳1连接。
在本实施方式中，所述电机5为防水无刷电机。从图1中可以看出，所述无人机除了电机5及螺旋桨是裸露在外的，其他零件如电路部分4都是密封于中心腔1-4中的，因此为了防止电机5受到水的腐蚀，本案中的电机5采用防水无刷电机。
在本实施方式中，请参考图1，所述电路部分4密封设置于所述中心腔1-4中。请参考图5，所述电路部分4包括总控制板4-1、电源4-2、WIFI模块4-3及外部输入模块4-4；所述电源4-2、WIFI模块4-3、外部输入模块4-4及电机5分别与所述总控制板41电连接。
具体的，所述外部输入模块4-4包括USB座及T卡座。
请同时参考图11-图13，本发明的具体实施方式提供的无人机外壳的成型模具包括上模7和下模8。其中，请参考图11，当上模7和下模8合模时，所述上模7的内壁面与下模8的内壁面围成型腔9。在本实施方式中，请参考图11，所述成型模具还包括注入孔10，所述注入孔10贯穿所述上模7并与所述型腔9相通。
具体的，请同时参考图14、图10，在本实施方式中，所述上模7及下模8均呈方形。
请同时参考图14、图10，所述型腔9呈蝴蝶状并包括中心腔9-1及4个臂腔9-2；所述中心腔9-1呈方形并位于所述型腔9的中心位置，每个臂腔9-2自所述中心腔9-1的一个边角上向远端呈放射状延伸。
本发明的设计要点1在于，请参考图14，所述型腔9内设有龙骨定位部7-1，所述龙骨定位部7-1用于可拆卸的安装所述无人机外壳的内部龙骨11。
具体的，请参考图14，所述龙骨定位部7-1设于所述型腔9内并装设于所述上模7的内壁面上。所述龙骨定位部7-1包括位于上模7中心的框形骨定位块7-1-1及分布于所述框形骨定位块7-1-1外围的四个电机骨定位块7-1-2。具体的，所述框形骨定位块7-1-1位于中心腔9-1内，每个电机骨定位块7-1-2分别位于一个臂腔9-2的靠近端部的位置。请参考图11，所述内部龙骨11包括框形骨11-1及四个电机骨11-2；所述框形骨定位块7-1-1用于安装所述框形骨11-1；所述电机骨定位块7-1-2用于安装所述电机骨11-2。其中，所述框形骨11-1是用于安装无人机的电路部分的，所述电机骨11-2是用于安装无人机的电机的。
在本实施方式中，请参考图14，所述电机骨定位块7-1-2包括连接部7-1-2-2及安装部7-1-2-1；所述安装部7-1-2-1的外表面与电机骨11-2的内表面贴合；所述连接部7-1-2-2连接于安装部7-1-2-1与上模7的内壁面之间，所述连接部7-1-2-2的外表面与电机骨11-2的外表面轮廓相似。这样的设计，使得所述电机骨11-2的定位更精确，同时也使得所述电机骨11-2安装之后与连接部7-1-2-2的过度平滑。
本发明的设计要点2在于，请参考图14，所述型腔9的内壁面上设有外层定位部，具体的，外层定位部的结构下面会具体结合薄皮外层13的结构来描述。所述外层定位部用于可拆卸的安装所述无人机外壳的薄皮外层13。
在本实施方式中，请参考图12和图13，所述薄皮外层13由上外层13-1及下外层13-2组成，所述上模7的内壁面与所述上外层13-1的外表面贴合；所述下模8的内壁面与所述下 外层13-2的外表面贴合。
在本实施方式中，所述下外层13-2是通过下述方法定位于所述下模8上的。请参考图10，所述外层定位部包括设于所述下模8的内壁面上的4个定位柱8-1及4个定位凸块8-3；请成参考图13，所述下外层13-2对应定位柱8-1的位置设有定位孔13-2-1，所述定位柱8-1插设于所述定位孔13-2-1中。请参考图13，所述下外层13-2对应定位凸块8-3的位置设有定位凹槽13-2-2，所述定位凸块8-3容纳于所述定位凹槽13-2-2内。从而使得所述下外层13-2定位于所述下模8上。
具体的，请参考图10，4个定位凸块8-3分别位于所述中心腔9-1内。每个定位柱8-1分别位于一个臂腔9-2的靠近端部的位置。
在本实施方式中，请参考图12，所述上外层13-1对应框形骨定位块7-1-1及4个电机骨定位块7-1-2的位置分别开设有框形骨开口13-1-1及电机骨开口13-1-2，所述上外层13-1通过将框形骨开口13-1-1套设在框形骨定位块7-1-1及将电机骨开口13-1-2套设在电机骨定位块7-1-2上而定位于上模7的内壁面上。
因此，所述薄皮外层定位部具体包括位于下模8的内壁面上分别设有4个定位柱8-1及4个定位凸块8-3，及位于上模7的框形骨定位块7-1-1及4个电机骨定位块7-1-2。
由此可见，本发明通过在成型模具的型腔9内可拆卸的安装有薄皮外层13及内部龙骨11，当轻质材料从所述注入孔10中注入型腔9内之后，就会形成由薄皮外层13、轻质材料组成的轻质中层12、内部龙骨11一体成型的无人机外壳，然后把薄皮外层13及内部龙骨11从型腔9中拆卸下来就可以得到一体成型的无人机外壳。
本发明的成型模具成型出来的是由薄皮外层13、轻质中层12及内部龙骨11一体成型的无人机外壳，与现有技术中的模具成型出的单层结构有很大的改进，其可以使得由层状结构组成的产品减少了很多繁杂的安装过程，同时也使得层状结构之间的连接更加的紧密、牢固。
本发明的成型模具成型出来的是由薄皮外层13、轻质中层12及内部龙骨11一体成型的无人机外壳。其中，轻质中层12质量轻浮力好，同时轻质中层12部分的体积分量最大浮力好，因此本案中的成型模具形成的无人机外壳有利于无人机在水上漂浮，且保证了无人机在水上作业自如。薄皮外层13的设计，不仅给予所述无人机外壳的连接强度，同时也使得所述无人机外壳的外表美观。内部骨架的设计，使得无人机外壳有了用于安装其他电路部分或电机的位置。
在本实施方式中，所述轻质材料为EPS发泡材料，所述薄皮外层13及内部龙骨11均为塑料材质。EPS发泡材料的发泡浮力好，有利于无人机在水上漂浮及保证了无人机在水上作业自如。同时又因EPS发泡材料的耐用性、塑性、耐高温及防水性均没有塑料强，因此所述薄皮外层1311及内部龙骨11均采用塑料材料，这样不仅能够在保证所述无人机在水上漂浮的特性同时也使得所述无人机的使用寿命更长。
在本实施方式中，本案是通过下述方法将上模7及下模8进行定位合模的。请参考图14，所述上模7的与下模8相对的一面的一圈边缘设于四个限位槽7-2，请参考图10，所述下模8上对应限位槽7-2的位置设有四个限位块8-2；请参考图2或图13，每一个限位块8-2限位于一个限位槽7-2中以连接所述上模7与下模8。在其他实施方式中，可以是上模7上设有四个限位块，下模8上设有四个限位槽，或者限位块及限位槽的个数不是4个，只要是能过将上模7和下模8精确的定位在一起都可以。
本发明的具体实施方式提供的无人机外壳的成型工艺包括以下步骤：
步骤1：内部龙骨的注塑模具制作。
步骤2：薄皮外层的吸塑模具制作。
步骤3：内部龙骨、轻质中层及薄皮外层一体成型的外壳模具制作。
在本步骤中，请参考图11，为所述外壳模具的结构示意图。所述外壳模具是发泡模具。
请参考图11，所述发泡模具包括上模1及下模8，所述上模1的内壁面及下模8的内壁 面形成型腔。请同时参考图9、图10，所述型腔中设有用于定位内部龙骨1-3的内部龙骨定位部7-1及用于定位薄皮外层1-1的薄皮外层定位部。
具体的，请参考图9，所述内部龙骨定位部7-1设于上模7上，所述内部龙骨定位部7-1还包括位于所述型腔中心的框形骨定位块7-1-1及4个分布在所述框形骨定位块7-1-1外围的电机骨定位块7-1-2。
具体的，请参考图10，所述薄皮外层定位部设于下模8上，薄皮外层定位部包括四个定位柱8-1及四个定位凸块8-3。
步骤4：将塑料注塑到注塑模具中以形成内部龙骨；
请参考图12，为所述内部龙骨1-3的结构示意图。所述内部龙骨1-3采用硬质材料制成，在本实施方式中，所述内部龙骨采用塑料制成。
请参考图12，所述内部龙骨1-3包括位于内部龙骨1-3中心位置的框形骨1-3-1及4个分布在所述框型骨31外围的电机骨1-3-2。
步骤5：将塑料板材在吸塑模具中吸塑以形成薄皮外层1-1；
所述薄皮外层1-1采用硬质材料制成，在本实施方式中，所述薄皮外层1-1采用塑料制成。
请同时参考图13、图14，为所述薄皮外层的结构示意图。所述薄皮外层1-1包括上外层13-1和下外层13-2。
步骤6：将内部龙骨1-3及薄皮外层1-1分别可拆卸的安装于外壳模具中。具体的，将所述框形骨1-3-1安装于所述框形骨定位块7-1-1上，将每个电机骨1-3-2安装与一个电机骨定位块7-1-2上。同时，将所述上外层13-1与上模7的内壁面贴合，具体的，所述上外层13-1是通过框形骨定位块7-1-1及电机骨定位块7-1-2而定位于上模7的内壁面上的。然后将所述下外层13-2通过四个定位柱8-1及四个定位凸块8-3贴设在下模8的内壁面上；再将轻质材料注入外壳模具中形成内部龙骨1-3、轻质材料组成的轻质中层1-2、薄皮外层1-1一体成型的无人机外壳。
请参考图11，为所述内部龙骨1-3、轻质中层1-2及薄皮外层1-1一体成型的无人机外壳。其中，轻质中层1-2质量轻浮力好，同时轻质中层1-2部分的体积分量最大浮力好，因此本案中的成型模具形成的无人机外壳有利于无人机在水上漂浮，且保证了无人机在水上作业自如。薄皮外层1-1的设计，不仅给予所述无人机外壳的连接强度，同时也使得所述无人机外壳的外表美观。内部龙骨1-3的设计，使得无人机外壳有了用于安装其他电路部分或电机的位置。同时，所述无人机外壳一体成型也减少了所述无人机安装过程中很多步骤。
在本实施方式中，所述轻质材料是EPS发泡材料。
在本实施方式中，所述发泡模具在工作时呈真空状态。
在本实施方式中，所述EPS发泡材料是在预先选定的注入温度和压力的条件下注入发泡模具中的。
在本实施方式中，所述注入温度在100度到130度的范围内。
当然，本发明还可有其它多种实施方式，基于本实施方式，本领域的普通技术人员在没有做出任何创造性劳动的前提下所获得其他实施方式，都属于本发明所保护的范围。

Claims (24)

  1. 一种无人机，包括外壳，其特征在于，所述外壳呈层状结构，包括薄皮外层、轻质中层及内部龙骨；
    所述内部龙骨包括位于外壳中心位置的框形骨及分布在框形骨外围的若干电机骨；
    所述轻质中层将框形骨到若干电机骨呈放射状的连接为一体；
    所述薄皮外层包覆在所述轻质中层的外表面。
  2. 根据权利要求1所述的无人机，其特征在于，所述内部龙骨由硬质材料注塑而成；所述轻质中层由轻质材料注塑而成；所述薄皮外层由硬质材料吸塑而成。
  3. 根据权利要求1所述的无人机，其特征在于，所述轻质中层包括第一嵌入部；所述第一嵌入部嵌入所述框形骨的边框内并与所述框形骨围成一个中心腔；所述中心腔用于容纳所述无人机的电路部分。
  4. 根据权利要求3所述的无人机，其特征在于，所述中心腔的开口向上；所述中心腔的开口呈方形。
  5. 根据权利要求3所述的无人机，其特征在于，所述轻质中层还包括若干第二嵌入部；每个第二嵌入部嵌入一个电机骨的边框内并与所述电机骨围成电机仓；所述电机仓用于容纳电机。
  6. 根据权利要求5所述的无人机，其特征在于，所述电机仓的开口向上；所述电机仓的开口呈梅花状，包括若干大圆弧及若干小圆弧；所述大圆弧和小圆弧相互间隔连接设置；所述大圆弧与电机的外表面相适配。
  7. 根据权利要求4所述的无人机，其特征在于，所述无人机还包括上盖，所述上盖通过密封圈盖设于所述中心腔的开口处以密封所述中心腔。
  8. 根据权利要求7所述的无人机，其特征在于，所述无人机还包括一对支架脚，所述支架脚安装于所述外壳的下方；所述外壳对应所述支架脚的位置设有通孔，所述通孔与所述中心腔相通；紧固件穿过所述通孔以将所述支架脚固定在框形骨上；所述支架脚用于架起所述无人机。
  9. 根据权利要求8所述的无人机，其特征在于，所述支架脚包括一个支撑部及两个连接部；两个连接部分别自所述支撑部的端部向所述外壳斜向弧线延伸，两个连接部之间的距离从外壳到支撑部逐渐增大；所述连接部的宽度从支撑部到外壳的方向逐渐加宽。
  10. 一种无人机外壳的成型模具，包括上模和下模，所述上模的内壁面与下模的内壁面围成型腔；其特征在于，
    所述型腔内设有龙骨定位部，所述龙骨定位部用于可拆卸的安装无人机外壳的内部龙骨；
    所述型腔的内壁面上设有外层定位部，所述外层定位部用于可拆卸的安装所述无人机外壳的薄皮外层；
    轻质材料注入型腔内形成由薄皮外层、轻质材料组成的轻质中层、内部龙骨一体成型的无人机外壳。
  11. 根据权利要求10所述的无人机外壳的成型模具，其特征在于，所述轻质材料为EPS发泡材料，所述薄皮外层及内部龙骨均为塑料材质。
  12. 根据权利要求10所述的无人机外壳的成型模具，其特征在于，所述型腔呈蝴蝶状并包括中心腔及若干臂腔；所述中心腔呈方形并位于所述型腔的中心位置，每个臂腔自所述中心腔的一个边角上向远端呈放射状延伸。
  13. 根据权利要求10所述的无人机外壳的成型模具，其特征在于，所述龙骨定位部装设于所述上模的内壁面上；所述龙骨定位部包括位于中心腔的框形骨定位块及分布于每个臂腔的靠近端部位置的若干电机骨定位块；所述内部龙骨包括框形骨及若干电机骨；所述框形骨定位块用于安装所述框形骨；所述电机骨定位块安装定位电机骨。
  14. 根据权利要求13所述的无人机外壳的成型模具，其特征在于，所述电机骨定位块包括连接部及安装部；所述安装部的外表面与电机骨的内表面贴合；所述连接部连接于安装部与上模的内壁面之间，所述连接部的外表面与电机骨的外表面轮廓相似。
  15. 根据权利要求10所述的无人机外壳的成型模具，其特征在于，所述薄皮外层由上外层及下外层组成；所述上模的内壁面与所述上外层的外表面贴合；所述下模的内壁面与所述下外层的外表面贴合。
  16. 根据权利要求15所述的无人机外壳的成型模具，其特征在于，所述外层定位部包括设于下模的内壁面上的若干定位柱及若干定位凸块；所述定位凸块位于中心腔，每个定位柱设于每个臂腔靠近端部的位置；所述下外层对应定位柱的位置设有定位孔，所述定位柱插设于所述定位孔中；所述下外层对应定位凸块的位置设有定位凹槽，所述定位凸块容纳于所述定位凹槽内。
  17. 根据权利要求15所述的无人机外壳的成型模具，其特征在于，所述上外层对应框形骨定位块的位置设有框形骨开口；所述上外层对应若干电机骨定位块的位置分别开设有电机骨开口；所述上外层通过将框形骨开口套设在框形骨定位块，及将每个电机骨开口套设在一个电机骨定位块上而定位于上模的内壁面上。
  18. 根据权利要求10所述的无人机外壳的成型模具，其特征在于，所述上模的与下模相对的一面的一圈边缘设于若干限位槽，所述下模上对应限位槽的位置设有若干限位块；每一个限位块现位于一个限位槽中以连接所述上模与下模。
  19. 一种无人机外壳的成型工艺，其特征在于，包括以下步骤：
    步骤1：内部龙骨的注塑模具制作；
    步骤2：薄皮外层的吸塑模具制作；
    步骤3：内部龙骨、轻质中层及薄皮外层一体成型的外壳模具制作；
    步骤4：将塑料注塑到注塑模具中以形成内部龙骨；
    步骤5：将塑料板材在吸塑模具中吸塑以形成薄皮外层；
    步骤6：将内部龙骨及薄皮外层分别可拆卸的安装于外壳模具中，再将轻质材料注入外壳模具中形成内部龙骨、轻质材料组成的轻质中层、薄皮外层一体成型的无人机外壳。
  20. 根据权利要求19所述的无人机外壳的成型工艺，其特征在于，在步骤3中，所述外壳模具是发泡模具。
  21. 根据权利要求19所述的无人机外壳的成型工艺，其特征在于，在步骤6中，所述轻质材料是EPS发泡材料。
  22. 根据权利要求20所述的无人机外壳的成型工艺，其特征在于，在步骤6中，所述发泡模具在工作时呈真空状态。
  23. 根据权利要求21所述的无人机外壳的成型工艺，其特征在于，在步骤6中，所述EPS发泡材料是在预先选定的注入温度和压力的条件下注入发泡模具中的。
  24. 根据权利要求23所述的无人机外壳的成型工艺，其特征在于，所述注入温度在100度到130度的范围内。
PCT/CN2017/070782 2016-08-16 2017-01-10 一种无人机、无人机外壳的成型模具及成型工艺 WO2018032723A1 (zh)

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