WO2022068085A1 - 一种吹风头及具有其的便携可拆吹风装置 - Google Patents

一种吹风头及具有其的便携可拆吹风装置 Download PDF

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Publication number
WO2022068085A1
WO2022068085A1 PCT/CN2020/137016 CN2020137016W WO2022068085A1 WO 2022068085 A1 WO2022068085 A1 WO 2022068085A1 CN 2020137016 W CN2020137016 W CN 2020137016W WO 2022068085 A1 WO2022068085 A1 WO 2022068085A1
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WO
WIPO (PCT)
Prior art keywords
unit
scroll casing
transmission unit
air outlet
hair dryer
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PCT/CN2020/137016
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English (en)
French (fr)
Inventor
丁聪
张武
黎力
曾旭
Original Assignee
莱克电气绿能科技(苏州)有限公司
苏州金莱克精密机械有限公司
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Application filed by 莱克电气绿能科技(苏州)有限公司, 苏州金莱克精密机械有限公司 filed Critical 莱克电气绿能科技(苏州)有限公司
Publication of WO2022068085A1 publication Critical patent/WO2022068085A1/zh

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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
    • E01H1/08—Pneumatically dislodging or taking-up undesirable matter or small objects; Drying by heat only or by streams of gas; Cleaning by projecting abrasive particles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • the invention relates to the field of electric tools, in particular to a hair dryer and a portable and detachable hair dryer having the same.
  • a power tool with a blower function is a relatively common garden tool. It is generally used for cleaning up debris such as fallen leaves and dust.
  • the blower power tools on the market are usually set as one piece, and such blower power tools usually take up a lot of space. There is a large space, and the integrated blower power tool usually only has the blower function, which cannot meet the diverse needs of gardening maintenance.
  • the purpose of the present invention is to provide a blower head and a portable and detachable blower device having the same, so as to solve the problems of large space occupied and single function of blower electric tools in the prior art.
  • the present invention provides a blowing head for a blowing device, the blowing head comprises a scroll casing, a fan unit arranged in the scroll casing, and at least one connecting unit, the fan unit includes a fan and a speed-increasing transmission unit,
  • the connection unit includes a drive connection element; when the blowing head is detachably mounted on a drive device including a deceleration driven unit, the speed-increasing transmission unit realizes power through the drive connection element and the deceleration transmission unit
  • the coupling enables the driving device to apply to the speed-increasing transmission unit a first rotation speed obtained by deceleration of the reduction transmission unit, and to drive the fan to rotate at a second rotation speed greater than the first rotation speed.
  • the speed-increasing transmission unit includes at least two transmission elements with different diameters, wherein the transmission ratio of the transmission element for inputting power and the transmission element for outputting power is less than 1.
  • the blowing head further includes at least one air duct, the volute includes at least one air outlet channel, and the area of the air duct for contacting the air outlet channel is configured in a first shape, the The area of the air outlet channel for contact with the air duct is configured in a second shape that enables a sealing connection with the first shape.
  • the air cylinder includes a first cylinder opening for connecting with the air outlet channel, and the first shape is formed along the circumferential direction of the first cylinder opening, exists in the form of a closed loop, and has a limit
  • the second shape is a protrusion protruding from the surface of the air outlet channel and corresponding to the limiting portion.
  • the air outlet channel is arranged along the circumference of the volute, the air cylinder and the air outlet channel have the same first axis, when the blower is installed on the drive device including the handle,
  • the included angle between the first axis and the second axis of the handle is less than or equal to a preset angle.
  • the speed-increasing transmission unit further includes an output end connected with the fan, the output end is disposed close to the central area of the volute, and the drive connecting element is disposed close to the air outlet channel.
  • the scroll casing includes a first scroll casing and a second scroll casing that are detachably connected to each other, and the edge connection part of at least one of the first scroll casing and the second scroll casing includes a circumferential arrangement.
  • the guide seal the length of the guide seal along the axial direction of the scroll casing is greater than or equal to a preset length, when the first scroll casing and the second scroll casing are connected, the scroll casing can be
  • the guide seal implements guidance, and after the first scroll casing is connected to the second scroll casing, the scroll casing can be sealed by the guide seal member.
  • the connecting unit further includes a first locking assembly, and when the blowing head is mounted on the driving device including the first mounting assembly, the blowing head can use the first locking assembly and the first locking assembly and the first locking assembly.
  • a mounting assembly realizes a form-fit and/or force-fit connection.
  • first locking assembly is configured as a second snap unit
  • blower including the second snap unit when the blower including the second snap unit is installed on the driving device including the first mounting assembly, the blower The head can be snap-fitted by means of the second snap-fit unit with the first mounting component configured as the first snap-fit unit.
  • the present invention also provides a portable and detachable blowing device, comprising a driving device and any one of the blowing heads, wherein the driving device comprises a deceleration driven unit, the blowing head comprises a volute, and a blower disposed in the volute a fan unit, and at least one connecting unit, the fan unit includes a fan and a speed-increasing transmission unit, the connecting unit includes a driving connecting element; when the blowing head is detachably mounted on the driving device, the increasing The high-speed transmission unit realizes power coupling with the reduction transmission unit through the drive connecting element, so that the driving device can apply the first rotational speed obtained by the deceleration of the reduction transmission unit to the speed-increasing transmission unit, and achieve a speed greater than The second rotational speed of the first rotational speed drives the fan to rotate.
  • the driving device comprises a deceleration driven unit
  • the blowing head comprises a volute, and a blower disposed in the volute a fan unit, and at
  • the present invention has the following beneficial effects:
  • the hair dryer provided by the present invention can be stored independently of the driving device, thereby reducing the space occupied by the storage, and the hair dryer can be disassembled to facilitate the replacement of the hair dryer.
  • the blowing head of the portable and detachable blowing device provided by the present invention can be disassembled. When facing other gardening maintenance requirements, the blowing head of the portable and detachable blowing device can be replaced with other required tool heads, so as to meet the diversified demands of gardening maintenance.
  • FIG. 1 is a schematic top view of a hair dryer provided by an embodiment of the present invention.
  • FIG. 2 is a schematic bottom view of a hair dryer provided by an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a hair dryer provided by an embodiment of the present invention after the cover plate is removed;
  • FIG. 4 is a schematic structural diagram of a hair dryer provided by an embodiment of the present invention after the second volute is removed;
  • FIG. 5 is a schematic structural diagram of a blower of a blower according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a hair dryer provided by an embodiment of the present invention after removing the first volute;
  • FIG. 7 is a schematic structural diagram of a driving device in a portable detachable blower according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a partially cutaway driving device in a portable and detachable blower according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a driving unit and a deceleration driven unit in a portable and detachable blowing device provided by an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of another tool head provided by an embodiment of the present invention.
  • an embodiment of the present invention provides a blowing head for a blowing device, wherein the blowing head includes a volute 4, a fan unit arranged in the volute, and at least one connecting unit,
  • the fan unit includes a fan 6 and a speed-increasing transmission unit 5, and the connection unit includes a drive connection element 51;
  • the speed-increasing transmission unit 5 realizes power coupling with the deceleration transmission unit 3 through the drive connecting element 51, so that the The driving device can apply the first rotational speed decelerated by the deceleration transmission unit 3 to the speed-increasing transmission unit 5 , and realize to drive the fan 6 to rotate at a second rotational speed greater than the first rotational speed.
  • the volute 4 may include an air inlet 41 and an air outlet 43 , the air inlet 41 is used for sucking in external air, and the air outlet 43 is used to discharge the accelerated airflow generated by the rotation of the fan 6 .
  • the drive connecting element 51 may include a plurality of teeth evenly arranged in the circumferential direction, and the teeth of the drive connecting element 51 are provided with inclined guide slopes.
  • the deceleration driven unit 3 includes a driven element, so The driven element also includes a plurality of teeth evenly arranged in the circumferential direction, each tooth on the driven element also has an inclined guide slope, and the guide slope of the teeth on the driven element is the same as the guide slope.
  • the positions of the guide slopes of the teeth on the meshing part are set exactly opposite, that is, the guide slopes of the meshing part are located on the right side of the teeth, the guide slopes of the driven element are located on the left side of the teeth, and the guide slopes of the driven elements are located on the left side of the teeth.
  • the number and spacing arrangement are also matched to each other, so that the drive connecting element 51 can selectively engage with the deceleration driven unit 3 .
  • the driving connecting element 51 and the first gear 52 may be integrated into one body, and the driving connecting element 51 and the first gear 52 may also be two detachable connecting elements independent of each other.
  • the blowing head by arranging a blowing head independent of the driving device, the blowing head can be stored independently of the driving device, thereby reducing the space occupied by the storage, and the blowing head can be disassembled, which is convenient for storage. Replace the blowing head with a new blowing head or easily replace the blowing head with other tool bits such as drills, scarifiers, mixers, etc.
  • the step-up transmission unit includes at least two transmission elements having different diameters, wherein a transmission ratio of the transmission element for inputting power to the transmission element for outputting power is less than 1, the transmission ratio It can be characterized as the ratio of the instantaneous input angular velocity to the output angular velocity in the speed-increasing transmission unit.
  • the speed-increasing transmission unit 5 may include a first gear 52 and a second gear 53 , the outer diameter of the first gear 52 is larger than the outer diameter of the second gear 53 , and the The first gear 52 is fixedly connected with the drive connecting element 51 , the second gear 53 is meshed with the first gear 52 , and the fan 6 is coaxially connected with the second gear 53 .
  • the outer diameter ratio of the first gear 52 and the second gear 53 is 76:9.
  • the speed-increasing transmission unit 5 can accelerate the rotational speed output by the deceleration driven unit 3 , to meet the rotational speed requirements of the hair dryer.
  • the blowing head further includes at least one air duct 7
  • the volute 4 includes at least one air outlet channel 43
  • the air duct 7 is used to communicate with the The area of the air outlet channel 43 in contact is configured in a first shape, and the area of the air outlet channel 43 for contacting the air duct 7 is configured in a second shape that can be sealed with the first shape.
  • the air duct 7 can be sleeved on the outside of the air outlet channel 43.
  • the first shape is configured on the inner wall of the air duct 7 for being in contact with the air outlet channel.
  • the second shape is configured on the outer wall of the air outlet channel 43 for contact with the air duct.
  • the air cylinder 7 includes a first cylinder opening 71 for connecting with the air outlet channel 43 , and the first shape is along the circumferential direction of the first cylinder opening 71 .
  • the formed sealing rib exists in the form of a closed loop and has a limiting portion 712, and the second shape is a protrusion 44 protruding from the surface of the air outlet channel 43 and corresponding to the limiting portion.
  • the air cylinder 7 further includes a second cylinder opening 72, the first cylinder opening 71 and the second cylinder opening 72 of the air cylinder 7 are disposed opposite to each other, and the second cylinder opening 72 is used for discharging the air through the outlet. The accelerated airflow flowing out of the air passage 43 .
  • the closed loop formed by the sealing rib 711 along the first cylinder opening 71 includes at least two bent portions 712 arranged at intervals.
  • the outer wall of the air outlet channel 43 is also provided with two projections arranged at intervals. 44.
  • the positions of the two protrusions 44 on the air outlet channel 43 correspond one-to-one with the positions of the two bent portions 712 on the air duct 7 .
  • the air outlet channel 43 of the scroll casing 4 can be clamped into the bent portion 712 of the air duct 7 through the protrusion 44, so as to realize the connection between the scroll casing 4 and the air outlet.
  • the airflow discharged from the inside of the scroll casing 4 is not easy to flow out from the connection between the scroll casing 4 and the blower 7 .
  • the air outlet channel 43 is arranged along the circumferential direction of the volute, so as to direct the accelerated airflow generated in the volute outward from the circumferential direction of the volute Exhaust, the air cylinder 7 and the air outlet channel 43 have the same first axis, when the hair dryer is installed on the drive device including the handle, the first axis and the second axis of the handle The included angle is less than or equal to the preset included angle.
  • the preset angle can be set based on actual requirements. It can be understood that, the smaller the preset angle is, the smaller the angle occupied by the hair dryer after being installed on the driving device is relative to the first axis. The smaller the space in the vertical direction is, when the preset included angle is zero, the space in the direction perpendicular to the first axis occupied by the blowing head after being installed on the driving device is the smallest.
  • the scroll casing 4 includes a first scroll casing 45 and a second scroll casing 46 arranged opposite to each other, and the first scroll casing 45 and the second scroll casing 46 are detachable
  • the air inlet 41 penetrates the surface of the second scroll casing 46 opposite to the first scroll casing 45 .
  • the first scroll casing 45 and the second scroll casing 46 are detachably connected through a clamping groove and a clamping claw that can be latched to each other.
  • the first scroll casing 45 At least two clamping claws 451 are arranged at intervals along the circumferential direction thereof, correspondingly, as shown in FIG.
  • the positions of 461 on the second scroll casing 46 correspond to the positions of the claws 451 on the first scroll casing 45 one-to-one.
  • a clamping groove may be provided on the first scroll casing 45
  • a clamping claw may be provided in the second scroll casing 46 .
  • the user can quickly disassemble and assemble the volute without the need for professional disassembly and assembly tools through the cooperation between the card slot and the claw.
  • the edge connection portion of at least one of the first scroll casing 45 and the second scroll casing 46 includes a circumferentially disposed guide seal 453 along the scroll casing.
  • the axial length of 4 is greater than or equal to a preset length.
  • the guide seal 453 is disposed at the edge connection portion of the first scroll casing 45 , because the length of the guide seal 453 along the axial direction of the scroll casing 4 is greater than or equal to a predetermined length. Therefore, when the first scroll casing 45 and the second scroll casing 46 are connected, the guide seal 453 can protrude into the interior of the second scroll casing 46, and the guide seal The outer surface of 453 abuts against the inner surface of the second scroll casing 46 , so as to achieve sealing between the first scroll casing 45 and the second scroll casing 46 .
  • the preset length can be set based on actual needs, and the preset length can be set to 2.5 to 4 mm, which is 1.5 to 3 times the corresponding conventional wall thickness. It can be understood that, the larger the preset length, the greater the The sealing performance of the first scroll casing 45 and the second scroll casing 46 after being connected is better.
  • the surface of the guide seal 453 includes a plurality of grooves 454 arranged at equal intervals. 454 is arranged along the axial direction of the scroll casing 4 .
  • the speed-increasing transmission unit 5 includes an output end connected to the fan, and an input end for coupling with the speed-reduction driven unit, the output end being close to the central area of the volute The input end is arranged close to the air outlet channel.
  • the first scroll casing 45 includes a connecting seat 452 having a receiving cavity 4521 , and the connecting seat 452 is located on the outer surface of the first scroll casing 45 and close to the air outlet passage 43 .
  • the central axis of the connecting seat 452 does not coincide with the central axis of the first scroll casing 45 , and the connecting seat 452 deviates from the middle position of the first scroll casing 45 and is disposed close to the air outlet passage 43 . .
  • the speed-increasing transmission unit 5 is accommodated in the receiving cavity 4521 of the connecting seat 452 , and the driving connecting element 51 of the speed-increasing transmission unit 5 is disposed on the side of the receiving cavity 4521 close to the air outlet channel 43 .
  • the output end 54 of the speed-increasing transmission unit 5 for connecting with the fan 6 is arranged on the side of the receiving cavity 4521 away from the air outlet channel 43 .
  • the fan 6 is located in the installation space formed by the first scroll casing 45 and the second scroll casing 46 , and the first scroll casing 45 is on the side of the receiving cavity 4521 away from the air outlet channel 43 .
  • the bottom of the fan is provided with a through hole 455, and the output end 54 of the speed-increasing transmission unit 5 is connected to the fan 6 through the through hole 455.
  • the driving device The blowing head can be connected at a position close to the air outlet channel 43, so that the volume of the driving device and the blowing head can be reduced and the space occupied can be reduced.
  • the scroll casing further includes a cover plate 8 , the cover plate 8 is provided with a first mounting hole 81 , and the drive connecting element 51 passes through the first mounting hole 81 .
  • the mounting hole 81 is to be engaged with the deceleration driven unit 3 , and the second clamping unit 42 is disposed on the outer side surface of the cover plate 8 and/or the side wall 4522 of the connecting seat 452 .
  • the size of the cover plate 8 matches the size of the opening of the accommodating cavity 4521 , and the cover plate 8 covers the opening of the accommodating cavity 4521 , so as to protect the increase in the accommodating cavity 4521 .
  • the position of the first mounting hole 81 on the cover plate 8 corresponds to the position of the drive connecting element 51 in the connecting seat 452 , so that the drive connecting element 51 can pass through. through the first mounting hole 81 to engage with the deceleration driven unit 3 .
  • the cover plate 8 may be fixed to the connection base 452 by a detachable connection manner such as snap connection or screw connection.
  • connection unit further includes a first locking assembly, and when the hair dryer is mounted on the driving device including the first mounting assembly, the hair dryer can be used for the first locking assembly and the first locking assembly.
  • the first mounting component realizes a form-fit and/or force-fit connection.
  • the first locking assembly is configured as a second snap-fitting unit 42 , when a blowing head including the second snap-fitting unit 42 is mounted to a tool head of the driving device When mounted on the mounting portion, the blowing head can be snap-fitted by means of the second snap-fit unit 42 and the first mounting component of the drive device.
  • the second clamping unit 42 includes a first limiting stage 421 , a first clamping piece 422 and a second clamping piece 423 , and the first limiting stage 421 is used for connecting with The first limiting hole 111 of the first mounting assembly is matched with the first locking member 422 for matching with the first stopper 112 of the first mounting assembly, and the second locking member 423 is used for to cooperate with the second stopper 113 of the first installation component.
  • the first limiting platform 421 may be disposed on the cover plate 8 , and the first engaging member 422 and the second engaging member 423 may be along the circumference of the side wall of the connecting seat 452 .
  • the first clamping member 422 and the second clamping member 423 are arranged at intervals in the longitudinal direction.
  • the first limiting hole 111 is arranged on the side of the tool head mounting portion of the housing 1 and On the opposite surface of the cover plate 8 , the position of the first limiting hole 111 at the installation end corresponds to the position of the first limiting platform 421 on the cover plate 8 , and the first limiting hole 111
  • the stopper 112 and the second stopper 113 are arranged at intervals along the perimeter direction of the mounting end, and are respectively connected with the first clip 422 and the second clip 423 in the The positions of the seats 452 correspond one-to-one.
  • the first limiting platform 421 is inserted into the first limiting hole 111, and the blowing head is connected with the first limiting hole 111 .
  • the table 421 rotates as a fulcrum, and when the driving connecting element 51 is engaged with the driven element, the automatic alignment of the driving connecting element 51 and the driven element can be realized, even if the driving connecting element 51 is connected to the driven element.
  • the driven element is slightly inclined during installation, and the driving connecting element 51 and the driven element can also be automatically aligned to the correct installation position, which improves the installation efficiency of the blowing head and the driving device.
  • the first stopper 112 is clamped on the first clamp 422 and the second stopper 113 is clamped On the second clamping part 423, the locking of the blowing head and the driving device is realized.
  • the speed-increasing transmission unit in Embodiment 1 includes a first gear and a second gear with different diameters, while the speed-increasing transmission unit in this embodiment includes The other structures of the driving wheel, the driven wheel and the transmission belt are the same, so in this embodiment, the description is not repeated.
  • the outer diameter of the driving wheel is larger than the outer diameter of the driven wheel
  • the transmission belt is arranged on the outer circumference of the driving wheel and the driven wheel
  • the driving wheel is connected with the driving connecting element 51
  • the fan 6 is coaxially connected with the driven wheel.
  • the outer diameter ratio of the driving wheel and the driven wheel is 76:9.
  • the driving connecting element 51 and the driving wheel can be integrated into one body, and the driving connecting element 51 and the driving wheel can also be two detachably connected elements that are independent of each other.
  • the speed-increasing transmission unit 5 can accelerate the rotational speed output by the deceleration driven unit 3 to meet all requirements. Describe the rotational speed requirement of the hair dryer.
  • Embodiment 1 the air duct in Embodiment 1 is sleeved on the outside of the air outlet channel, and the first shape is configured on the inner wall of the air duct for contacting the air outlet channel.
  • the second shape is configured on the outer wall of the air outlet channel for contact with the air duct, and the structure and connection method of the air outlet channel and the air duct in this embodiment are slightly different from those in Embodiment 1, and other The structures are all the same, so in this embodiment, detailed descriptions are omitted.
  • the air outlet channel is sleeved on the outside of the air duct.
  • the first shape is configured on the outer wall of the air duct for contacting the air outlet channel
  • the second shape is configured On the inner wall of the air outlet channel for contacting with the air duct, when the air duct is sealedly connected to the air outlet channel, the first shape and the second shape match each other, and the air duct is in a sealed connection with the air outlet channel.
  • the first shape of the outer wall of the cylinder abuts against the inner wall of the air outlet channel.
  • the present invention also provides a portable and detachable blowing device, comprising a driving device and the blowing head according to any one of the foregoing, wherein the driving device comprises a deceleration driven unit, the blowing head comprises a volute, and is disposed in the volute. a fan unit inside, and at least one connecting unit, the fan unit includes a fan and a speed-increasing transmission unit, and the connecting unit includes a drive connecting element;
  • the speed-increasing transmission unit realizes power coupling with the speed-reducing transmission unit through the driving connecting element, so that the driving device can
  • the transmission unit applies a first rotational speed obtained by deceleration of the deceleration transmission unit, and drives the fan to rotate at a second rotational speed greater than the first rotational speed.
  • the driving device further includes a casing 1 and a driving unit 2 .
  • the driving unit 2 and the deceleration driven unit 3 are both located in the casing 1 , and the casing
  • the body 1 includes a tool head mounting portion, the tool head mounting portion is provided with a first clamping unit 11 that is clamped with the second clamping unit 42, and the tool head mounting portion is further provided with a second mounting hole 12,
  • the deceleration driven unit 3 includes a driven element 34 , the driven element protrudes out of the housing 1 through the second mounting hole 12 , and the hair dryer is connected to the second clamping unit 42 .
  • the first clamping unit 11 of the casing 1 is clamped to connect the hair dryer to the casing 1.
  • the driving connecting element 51 is engaged with the driven element 34 of the deceleration driven unit 3 through the first mounting hole 81 .
  • blowing head of the portable and detachable blowing device can be disassembled, when faced with other gardening maintenance requirements, the blowing head of the portable and detachable blowing device can be replaced with other required tool heads, so as to meet the requirements of gardening maintenance. Diversified needs.
  • the tool head mounting portion of the housing of the driving device may at least include a first installation assembly and a second mounting assembly by means of which a tool head can achieve a form-locking fit when a tool head including a first locking assembly is mounted on the tool head mounting portion and/or a non-positive connection, so that the drive device can drive the tool head to work with a first maximum torsional strength;
  • the tool head When a tool head comprising a second locking member is mounted on the tool head mounting portion, the tool head can achieve a positive and/or non-positive connection by means of the second locking member and the second mounting member So that the driving device can drive the tool head to work with a second maximum torsional strength greater than the first maximum torsional strength.
  • the first maximum torque resistance refers to the limit installation strength of the hand-held power tool when the hand-held power tool is working normally, the driving device and the tool head are not loose, and it can be 0 ⁇ 5N.
  • the second maximum anti-torque strength refers to the limit installation strength of the hand-held power tool during normal operation, the driving device and the tool head will not loosen, and the specific can be 0 ⁇ 30N. m.
  • the first installation assembly is configured as a first snap unit 11
  • the first locking assembly is configured as a second snap unit 42
  • a tool head for example, a blower head
  • the tool head can be locked by means of the second clamping unit 42 and the first clamping unit 11 .
  • the engagement is made so that the driving device can drive the tool bit to work at the first maximum torque resistance strength.
  • the second mounting assembly is configured as a first locking unit 13
  • the second locking assembly is configured as a second locking unit 90
  • the tool bit can use the second locking unit 90 and the first The locking unit 13 realizes a latching connection, so that the drive device can drive the tool head with the second maximum torque resistance.
  • the first clamping unit 11 includes a first limiting hole 111 , a first stopper 112 and a second stopper 113 , and the first locking unit includes a first stopper 111 .
  • the second clamping unit 42 When a tool head (such as a hair dryer) including the second clamping unit 42 is installed on the tool head mounting portion and the second clamping unit 42 includes a first limiting table 421 and a first clamping member 422 When connecting with the second engaging member 423, the first limiting platform 421 is engaged with the first limiting hole 111 of the first engaging unit 11, and the first engaging member 422 is engaged with the first engaging member 422.
  • the first stopper 112 of the unit 11 cooperates with the second stopper 423 and the second stopper 113 of the first clamping unit 11 cooperates.
  • the second limiting hole 901 is matched with the second limiting table 131
  • the overlapping member 902 is matched with the fixing table 132 .
  • the first installation component or the second installation component can be selected to be connected with different forms of tool heads according to requirements, which can improve the connection adaptability of the driving device.
  • the drive unit 2 includes a motor
  • the deceleration driven unit 3 further includes a third gear 31 , an interlocking gear 32 and a fourth gear 33 .
  • the interlocking gear 32 It includes a coaxially arranged input gear 321 and an output gear 322, the outer diameter of the input gear 321 is larger than the outer diameter of the output gear 322, and the outer diameter ratio of the third gear 31 and the input gear 321 is larger than the the outer diameter ratio of the output gear 322 to the fourth gear 33;
  • the motor is coaxially connected to the third gear 31, the third gear 31 is meshed with the input gear 321, the output gear 322 is meshed with the fourth gear 33, and the fourth gear 33 is meshed with the input gear 321.
  • the driven element is fixedly connected.
  • the second clamping unit 42 on the blowing head is snapped with the first mounting assembly 11 on the driving device, so as to realize the locking of the blowing head and the driving device;
  • the driving device is operated to stop the power output of the driving unit 2, the second clamping unit 42 and the first mounting assembly 11 are disassembled, and the driving device and the blowing head are respectively accommodated.

Abstract

一种用于吹风装置的吹风头及具有其的便携可拆吹风装置。吹风头包括涡壳（4）、设置于涡壳（4）内的风扇单元，以及至少一个连接单元。风扇单元包括风扇（6）和增速传动单元（5）。连接单元包括驱动连接元件（51）。当吹风头可拆卸地安装到包括减速传动单元（3）的驱动装置上时，增速传动单元（5）通过驱动连接元件（51）与减速传动单元（3）实现动力耦合，使得驱动装置能够对增速传动单元（5）施加由减速传动单元（3）减速得到的第一转速，并实现以大于第一转速的第二转速驱动风扇（6）旋转。吹风头及吹风装置可解决吹风电动工具占用空间大以及功能单一的问题。

Description

一种吹风头及具有其的便携可拆吹风装置 技术领域
本发明涉及电动工具领域，特别涉及一种吹风头及具有其的便携可拆吹风装置。
背景技术
随着生活水平的不断提高，人们逐渐开始重视生活中的绿化，花坛、院子、园林等绿化场所越来越普遍，随着绿化场所的逐渐普遍化，这些绿化场所的维护也成为一个重要的问题，如若维护不及时，不仅不会给人带来视觉的享受，颓废的环境还会加重人的疲劳感，影响人们的正常生活。
具备吹风功能的电动工具是一种较为常见的园林工具，一般用于落叶、灰尘等杂物的清理，目前，市场上的吹风电动工具通常为一体设置，而这样的吹风电动工具通常需要占用较大的空间，并且，一体设置的吹风电动工具通常也只具备吹风功能，其无法满足园艺维护的多样化需求。
发明内容
本发明的目的在于提供一种吹风头及具有其的便携可拆吹风装置，以解决现有技术中吹风电动工具占用空间大以及功能单一的问题。
本发明提供一种吹风头，用于吹风装置，所述吹风头包括涡壳、设置于所述涡壳内的风扇单元，以及至少一个连接单元，所述风扇单元包括风扇和增速传动单元，所述连接单元包括驱动连接元件；当所述吹风头可拆卸地安装到包括减速从动单元的驱动装置上时，所述增速传动单元通过所述驱动连接元件与所述减速传动单元实现动力耦合，使得所述驱动装置能够对所述增速传动单元施加由所述减速传动单元减速得到的第一转速，并实现以大于所述第一转速的第二转速驱动所述风扇旋转。
进一步地，所述增速传动单元包括至少两个具有不同直径的传动元件，其中用于输入动力的传动元件与其中用于输出动力的传动元件的传动比小 于1。
进一步地，所述吹风头还包括至少一个风筒，所述涡壳包括至少一个出风通道，所述风筒的用于与所述出风通道接触的区域被构造成第一形状，所述出风通道的用于与所述风筒接触的区域被构造成能够与所述第一形状实现密封连接的第二形状。
进一步地，所述风筒包括用于与所述出风通道连接的第一筒口，所述第一形状为沿所述第一筒口的周向形成的、以封闭回路形式存在的并具有限位部的密封筋，所述第二形状为凸出于所述出风通道的表面的并与所述限位部对应设置的凸起，当所述风筒与所述出风通道密封连接时，所述凸起卡接于所述限位部，所述出风通道的位于所述凸起周边的表面抵靠在所述密封筋上。
进一步地，所述出风通道沿所述涡壳的周向设置，所述风筒和所述出风通道具有相同的第一轴线，当所述吹风头安装到包括手柄的驱动装置上时，所述第一轴线与所述手柄的第二轴线的夹角小于等于预设夹角。
进一步地，所述增速传动单元还包括与所述风扇连接的输出端，所述输出端靠近所述涡壳的中心区域设置，所述驱动连接元件靠近所述出风通道设置。
进一步地，所述涡壳包括相对设置的可拆卸连接的第一涡壳和第二涡壳，所述第一涡壳和所述第二涡壳中的至少一个的边缘连接部位包括周向设置的导向密封件，所述导向密封件沿所述涡壳的轴向的长度大于等于预设长度，当所述第一涡壳与所述第二涡壳连接时，所述涡壳能够借助所述导向密封件实现导向，当所述第一涡壳与所述第二涡壳连接后，所述涡壳能够借助所述导向密封件实现密封。
进一步地，所述连接单元还包括第一锁定组件，当所述吹风头安装到包括第一安装组件的所述驱动装置上时，所述吹风头能够借助所述第一锁定组件和所述第一安装组件实现形状锁合和/或力锁合连接。
进一步地，所述第一锁定组件被构造为第二卡接单元，当包括所述第二卡接单元的吹风头安装到包括所述第一安装组件的所述驱动装置上时，所述吹风头能够借助所述第二卡接单元与被构造为第一卡接单元的所述第 一安装组件实现卡接配合。
本发明还提供一种便携可拆吹风装置，包括驱动装置和任一所述的吹风头，所述驱动装置包括减速从动单元，所述吹风头包括涡壳、设置于所述涡壳内的风扇单元，以及至少一个连接单元，所述风扇单元包括风扇和增速传动单元，所述连接单元包括驱动连接元件；当所述吹风头可拆卸地安装到所述驱动装置上时，所述增速传动单元通过所述驱动连接元件与所述减速传动单元实现动力耦合，使得所述驱动装置能够对所述增速传动单元施加由所述减速传动单元减速得到的第一转速，并实现以大于所述第一转速的第二转速驱动所述风扇旋转。
由于上述技术方案，本发明具有如下有益效果：
本发明提供的吹风头可以独立于驱动装置进行收纳，减少了收纳占用的空间，并且，吹风头可以拆卸，便于吹风头的更换。
本发明提供的便携可拆吹风装置的吹风头可以拆卸，当面临其他园艺维护需求时，可以将便携可拆吹风装置的吹风头替换成其他需要的工具头，从而满足园艺维护的多样化需求。
附图说明
为了更清楚地说明本发明的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单的介绍。显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它附图。
图1是本发明实施例提供的一种吹风头的俯视示意图；
图2是本发明实施例提供的一种吹风头的仰视示意图；
图3是本发明实施例提供的一种吹风头的去除盖板后的结构示意图；
图4是本发明实施例提供的一种吹风头去除第二涡壳后的结构示意图；
图5是本发明实施例提供的一种吹风头的风筒的结构示意图；
图6是本发明实施例提供的一种吹风头去除第一涡壳后的结构示意图；
图7是本发明实施例提供的一种便携可拆吹风装置中驱动装置的结构示意图；
图8是本发明实施例提供的一种便携可拆吹风装置中驱动装置部分剖开后的结构示意图；
图9是本发明实施例提供的一种便携可拆吹风装置中驱动单元和减速从动单元的结构示意图；
图10是本发明实施例提供的另一种工具头的结构示意图。
附图中：
1-壳体，2-驱动单元，3-减速从动单元，4-涡壳，5-增速传动单元，6-风扇，7-风筒，8-盖板；
11-第一卡接单元，12-第二安装孔，13-第一锁止单元；
31-第三齿轮，32-联动齿轮，33-第四齿轮，34-从动元件；
41-进风口，42-第二卡接单元，43-出风通道，44-凸起，45-第一涡壳；46-第二涡壳；
51-驱动连接元件，52-第一齿轮，53-第二齿轮，54-输出端；
71-第一筒口，72-第二筒口；
81-第一安装孔；
111-第一限位孔，112-第一挡止件，113-第二挡止件；
131-第二限位台，132-固定台；
321-输入齿轮，322-输出齿轮；
421-第一限位台，422-第一卡接件，423-第二卡接件；
451-卡爪，452-连接座，453-导向密封件，454-凹槽，455-通孔，461-卡槽461；
711-密封筋，712-弯折部
4521-收容腔；
90-第二锁止单元,901-第二限位孔，902-搭接件。
具体实施方式
为了使本技术领域的人员更好地理解本发明方案，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分的实施例，而不是全部的实施 例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都应当属于本发明保护的范围。
需要说明的是，本发明的说明书和权利要求书及附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的本发明的实施例能够以除了在这里图示或描述的那些以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含。
实施例1
如图1-6所示，本发明实施例提供了一种吹风头，用于吹风装置，所述吹风头包括涡壳4、设置于所述涡壳内的风扇单元，以及至少一个连接单元，所述风扇单元包括风扇6和增速传动单元5，所述连接单元包括驱动连接元件51；
当所述吹风头可拆卸地安装到包括减速从动单元3的驱动装置上时，所述增速传动单元5通过所述驱动连接元件51与所述减速传动单元3实现动力耦合，使得所述驱动装置能够对所述增速传动单元5施加由所述减速传动单元3减速得到的第一转速，并实现以大于所述第一转速的第二转速驱动所述风扇6旋转。
具体的，所述涡壳4可以包括进风口41和出风通道43，所述进风口41用于吸入外部空气，所述出风通道43用于排出由所述风扇6旋转产生的加速气流。
所述驱动连接元件51可以包括多个沿周向均匀布置的齿，所述驱动连接元件51的齿设有倾斜的导向坡面，相应的，所述减速从动单元3包括从动元件，所述从动元件上也包括多个沿周向均匀布置的齿，所述从动元件上的每个齿也具有倾斜的导向坡面，并且，所述从动元件上的齿的导向坡面与所述啮合部上的齿的导向坡面的位置设置正好相对，即所述啮合部的导向坡面位于齿的右侧，所述从动元件的导向坡面则位于齿的左侧，齿的数量及间距布置也是相互匹配的，以使所述驱动连接元件51与所述减速从动单元3可选择的啮合。
可选的，所述驱动连接元件51与所述第一齿轮52可以为集成为一体， 所述驱动连接元件51与所述第一齿轮52也可以为相互独立的两个可拆卸连接的元件。
在本发明实施例中，通过设置与所述驱动装置相互独立的吹风头，使得所述吹风头可以独立于所述驱动装置进行收纳，减少了收纳占用的空间，并且，吹风头可以拆卸，便于将吹风头更换成新的吹风头或便于将吹风头更换成钻头、松土头、搅拌头等其他工具头。
在一些实施例中，所述增速传动单元包括至少两个具有不同直径的传动元件，其中用于输入动力的传动元件与其中用于输出动力的传动元件的传动比小于1，所述传动比可以表征为所述增速传动单元中瞬时输入角速度与输出角速度的比值。
具体的，如图3所示，所述增速传动单元5可以包括第一齿轮52和第二齿轮53，所述第一齿轮52的外径大于所述第二齿轮53的外径，所述第一齿轮52与所述驱动连接元件51固定连接，所述第二齿轮53与所述第一齿轮52啮合，所述风扇6与所述第二齿轮53同轴连接。
优选的，所述第一齿轮52与所述第二齿轮53的外径比为76:9。
在实际应用中，由于所述第一齿轮52的外径大于所述第二齿轮53的外径，因此，所述增速传动单元5能够实现对所述减速从动单元3输出的转速进行加速，以满足所述吹风头的转速需求。
在一些实施例中，如图1-2所示，所述吹风头还包括至少一个风筒7，所述涡壳4包括至少一个出风通道43，所述风筒7的用于与所述出风通道43接触的区域被构造成第一形状，所述出风通道43的用于与所述风筒7接触的区域被构造成能够与所述第一形状实现密封连接的第二形状。
具体的，所述风筒7可以套接在所述出风通道43外部，相应的，所述第一形状构造在所述风筒7的用于与所述出风通道接触的内壁，所述第二形状构造在所述出风通道43的用于与所述风筒接触的外壁。
在一些实施例中，如图5所示，所述风筒7包括用于与所述出风通道43连接的第一筒口71，所述第一形状为沿所述第一筒口71的周向形成的、以封闭回路形式存在的并具有限位部712的密封筋，所述第二形状为凸出于所述出风通道43的表面的并与所述限位部对应设置的凸起44，当所述风 筒与所述出风通道密封连接时，所述凸起卡接于所述限位部，所述出风通道43的位于所述凸起周边的表面抵靠在所述密封筋上。
具体的，所述风筒7还包括第二筒口72，所述风筒7的所述第一筒口71和所述第二筒口72相对设置，所述第二筒口72用于排出经所述出风通道43流出的加速气流。
所述密封筋711沿所述第一筒口71形成的封闭回路至少包括两个间隔设置的弯折部712，相应的，所述出风通道43的外壁上也设有两个间隔设置的凸起44，所述两个凸起44在所述出风通道43上的位置和所述两个弯折部712在所述风筒7上的位置一一对应。
在实际应用中，所述涡壳4的出风通道43可以通过所述凸起44卡接于所述风筒7的所述弯折部712内，以实现所述涡壳4与所述风筒7的可拆卸连接，并且，由于所述出风通道43的外壁抵靠在形成封闭回路的密封筋711上，因此，所述涡壳4与所述风筒7的连接处具有较好的密封性，从所述涡壳4内部排出的气流不易从所述涡壳4和所述风筒7的连接处流出。
在一些实施例中，如图1-3所示，所述出风通道43沿所述涡壳的周向设置，用于将涡壳内产生的加速气流自所述涡壳的圆周方向向外排出，所述风筒7和所述出风通道43具有相同的第一轴线，当所述吹风头安装到包括手柄的驱动装置上时，所述第一轴线与所述手柄的第二轴线的夹角小于等于预设夹角。
在实际应用中，所述预设夹角可以基于实际需求设置，可以理解的是，所述预设夹角越小，所述吹风头在安装至驱动装置后所占用的与所述第一轴线垂直的方向的空间就越小，当所述预设夹角为零，所述吹风头在安装至驱动装置后占用的与所述第一轴线垂直的方向的空间最小。
在一些实施例中，如图1所示，所述涡壳4包括相对设置的第一涡壳45和第二涡壳46，所述第一涡壳45和所述第二涡壳46可拆卸连接，如图2所示，所述进风口41贯穿所述第二涡壳46的与所述第一涡壳45相对的表面。
在一些实施例中，所述第一涡壳45和所述第二涡壳46通过能够相互 卡接的卡槽和卡爪实现可拆卸连接，如图4所示，所述第一涡壳45沿其周长方向间隔设置有至少两个卡爪451，相应的，如图6所示，所述第二涡壳46沿其周长方向间隔设置有至少两个卡槽461，所述卡槽461在所述第二涡壳46上的位置与所述卡爪451在所述第一涡壳45上的位置一一对应。
可选的，卡槽与卡爪的位置也可以对调，即可以在所述第一涡壳45上设置卡槽，相应的，在所述第二涡壳46上设置卡爪。
在实际应用中，通过卡槽与卡爪的相互配合，用户无需专业拆装工具便可实现涡壳的快速拆装。
在一些实施例中，所述第一涡壳45和所述第二涡壳46中的至少一个的边缘连接部位包括周向设置的导向密封件453，所述导向密封件453沿所述涡壳4的轴向的长度大于等于预设长度，当所述第一涡壳45与所述第二涡壳46连接时，所述涡壳4能够借助所述导向密封件453实现导向，当所述第一涡壳45与所述第二涡壳46连接后，所述涡壳4能够借助所述导向密封件453实现密封。
具体的，如图4所示，所述导向密封件453设置在所述第一涡壳45的边缘连接部位，由于所述导向密封件453沿所述涡壳4的轴向的长度大于等于预设长度，因此，当所述第一涡壳45与所述第二涡壳46连接后，所述导向密封件453能够伸入所述第二涡壳46的内部，并且，所述导向密封件453的外表面抵接在所述第二涡壳46的内表面，从而实现所述第一涡壳45和所述第二涡壳46之间的密封。
所述预设长度可以基于实际需求设置，所述预设长度可以设置为2.5～4mm，也就是相应常规壁厚的1.5～3倍，可以理解的是，所述预设长度越大，所述第一涡壳45和所述第二涡壳46在连接后的密封性越好。
由于所述导向密封件453的长度较大，为了防止所述导向密封件453在注塑过程中的变形，所述导向密封件453的表面包括多个等间距设置的凹槽454，所述凹槽454沿所述涡壳4的轴向设置。
在实际应用中，通过在所述第一涡壳或所述第二涡壳上设置导向密封件，可以弥补卡接装配因缺少螺钉固定而引起的漏风，并且，所述导向密封件还可以在涡壳装配时实现第一涡壳与所述第二涡壳的准确对位。
在一些实施例中，所述增速传动单元5包括与所述风扇连接的输出端，以及用于与所述减速从动单元耦合的输入端，所述输出端靠近所述涡壳的中心区域设置，所述输入端靠近所述出风通道设置。
具体的，如图3所示，所述第一涡壳45包括具有收容腔4521的连接座452，所述连接座452位于所述第一涡壳45的外表面并靠近所述出风通道43设置，所述连接座452的中心轴与所述第一涡壳45的中心轴并不重合，所述连接座452偏离所述第一涡壳45的中间位置并靠近所述出风通道43设置。
所述增速传动单元5收容于所述连接座452的收容腔4521中，所述增速传动单元5的驱动连接元件51设置在所述收容腔4521中靠近所述出风通道43的一侧，所述增速传动单元5的用于与所述风扇6连接的输出端54设置在所述收容腔4521中远离所述出风通道43的一侧。
所述风扇6位于所述第一涡壳45和所述第二涡壳46形成的安装空间中，所述第一涡壳45在所述收容腔4521的远离所述出风通道43的一侧的底部设有通孔455，所述增速传动单元5的输出端54穿过所述通孔455与所述风扇6连接。
在实际应用中，通过对所述连接座452相对于所述第一涡壳45的位置、以及所述增速传动单元5在所述收容腔4521中的位置进行合理设置，使得所述驱动装置可以在靠近所述出风通道43的位置与所述吹风头连接，从而能够减少驱动装置与吹风头组装后的体积，并减小空间的占用。
在一些实施例中，如图1和图3所示，所述涡壳还包括盖板8，所述盖板8设有第一安装孔81，所述驱动连接元件51穿过所述第一安装孔81以与所述减速从动单元3啮合，所述第二卡接单元42设置在所述盖板8的外侧面和/或所述连接座452的侧壁4522上。
具体的，所述盖板8的尺寸与所述收容腔4521的开口的尺寸相匹配，所述盖板8覆盖所述收容腔4521的开口，从而可以保护设置在所述收容腔4521中的增速传动单元5，所述第一安装孔81在所述盖板8上的位置与所述驱动连接元件51在所述连接座452中的位置相对应，以使得所述驱动连接元件51可以穿过所述第一安装孔81以与所述减速从动单元3啮合。
可选的，所述盖板8可以通过卡接或螺接等可拆卸的连接方式与所述连接座452固定。
在一些实施例中，所述连接单元还包括第一锁定组件，当所述吹风头安装到包括第一安装组件的所述驱动装置上时，所述吹风头能够借助所述第一锁定组件和所述第一安装组件实现形状锁合和/或力锁合连接。
在一些实施例中，如图1所示，所述第一锁定组件被构造为第二卡接单元42，当包括所述第二卡接单元42的吹风头安装到所述驱动装置的工具头安装部上时，所述吹风头能够借助所述第二卡接单元42和所述驱动装置的第一安装组件实现卡接配合。
具体的，如图1所示，所述第二卡接单元42包括第一限位台421、第一卡接件422和第二卡接件423，所述第一限位台421用于与所述第一安装组件的第一限位孔111配合，所述第一卡接件422用于与所述第一安装组件的第一挡止件112配合，所述第二卡接件423用于与所述第一安装组件的第二挡止件113配合。
具体的，所述第一限位台421可以设置在所述盖板8上，所述第一卡接件422和所述第二卡接件423可以沿所述连接座452的侧壁的周长方向间隔设置，所述第一卡接件422和所述第二卡接件423相对设置，相应的，所述第一限位孔111设置在所述壳体1的工具头安装部的与所述盖板8相对的表面，所述第一限位孔111在所述安装端部的位置与所述第一限位台421在所述盖板8的位置一一对应，所述第一挡止件112和所述第二挡止件113沿所述安装端部的周长方向间隔设置，并分别与所述第一卡接件422和所述第二卡接件423在所述连接座452的位置一一对应。
在实际应用中，在将所述吹风头与所述驱动装置组装时，将所述第一限位台421与所述第一限位孔111相插接，吹风头以所述第一限位台421作为支点旋转，在将所述驱动连接元件51啮合到所述从动元件时，能够实现所述驱动连接元件51与所述从动元件的自动对位，即使所述驱动连接元件51与所述从动元件在安装时略微偏斜，所述驱动连接元件51与所述从动元件也能够自动对位到正确的安装位置，提高了所述吹风头与所述驱动装置的安装效率。在所述驱动连接元件51与所述从动元件啮合后，将所述 第一挡止件112卡接在所述第一卡接件422上，并将所述第二挡止件113卡接在所述第二卡接件423上，从而实现所述吹风头与所述驱动装置的锁定。
实施例2
需要说明的是，本实施例与实施例1的主要区别在于：实施例1中的增速传动单元包括具有不同直径的第一齿轮和第二齿轮，而本实施例中的增速传动单元包括主动轮、从动轮和传动带，除此之外的其他结构均相同，故在本实施例中，不再进行赘述。
具体的，所述主动轮的外径大于所述从动轮的外径，所述传动带设置在所述主动轮和从动轮的外周，所述主动轮与所述驱动连接元件51连接，所述风扇6与所述从动轮同轴连接。
优选的，所述主动轮与所述从动轮的外径比为76:9。
可选的，所述驱动连接元件51与所述主动轮可以集成为一体，所述驱动连接元件51与所述主动轮也可以为相互独立的两个可拆卸连接的元件。
在实际应用中，由于所述主动轮的外径大于所述从动轮的外径，因此，所述增速传动单元5能够实现对所述减速从动单元3输出的转速进行加速，以满足所述吹风头的转速需求。
实施例3
需要说明的是，本实施例与实施例1的主要区别在于：实施例1中的风筒套接在出风通道的外部，第一形状构造在风筒的用于与出风通道接触的内壁，第二形状构造在出风通道的用于与所述风筒接触的外壁，而本实施例中出风通道和风筒的结构和连接方式与实施例1略有不同，除此之外的其他结构均相同，故在本实施例中，不再进行赘述。
具体的，所述出风通道套接在所述风筒外部，相应的，所述第一形状构造在所述风筒的用于与所述出风通道接触的外壁，所述第二形状构造在所述出风通道的用于与所述风筒接触的内壁，当所述风筒与所述出风通道密封连接时，所述第一形状与所述第二形状相互匹配，所述风筒外壁的所述第一形状抵靠在所述出风通道的内壁上。
实施例4
本发明还提供了一种便携可拆吹风装置，包括驱动装置和如前任一所述的吹风头，所述驱动装置包括减速从动单元，所述吹风头包括涡壳、设置于所述涡壳内的风扇单元，以及至少一个连接单元，所述风扇单元包括风扇和增速传动单元，所述连接单元包括驱动连接元件；
当所述吹风头可拆卸地安装到所述驱动装置上时，所述增速传动单元通过所述驱动连接元件与所述减速传动单元实现动力耦合，使得所述驱动装置能够对所述增速传动单元施加由所述减速传动单元减速得到的第一转速，并实现以大于所述第一转速的第二转速驱动所述风扇旋转。
具体的，如图7-9所示，所述驱动装置还包括壳体1和驱动单元2，所述驱动单元2和所述减速从动单元3均位于所述壳体1中，所述壳体1包括工具头安装部，所述工具头安装部设有与所述第二卡接单元42卡接的第一卡接单元11，所述工具头安装部还设有第二安装孔12，所述减速从动单元3包括从动元件34，所述从动原件通过所述第二安装孔12伸出所述壳体1之外，所述吹风头通过所述第二卡接单元42与所述壳体1的第一卡接单元11卡接，以将所述吹风头连接至所述壳体1，当所述吹风头卡接在所述壳体1上时，所述驱动连接元件51通过所述第一安装孔81与所述减速从动单元3的从动元件34啮合。
所述第二卡接单元42与所述第一卡接单元11的结构和具体连接方式可以参见吹风头实施例中的描述，此处不再赘述。
在实际应用中，由于所述便携可拆吹风装置的吹风头可以拆卸，当面临其他园艺维护需求时，可以将便携可拆吹风装置的吹风头替换成其他需要的工具头，从而满足园艺维护的多样化需求。
在一些实施例中，考虑到所述驱动装置可能需要连接其他需要的工具头，为了提高所述驱动装置的适配性，所述驱动装置的壳体的工具头安装部可以至少包括第一安装组件和第二安装组件，当包括第一锁定组件的工具头安装到所述工具头安装部上时，所述工具头能借助所述第一锁定组件和所述第一安装组件实现形状锁合和/或力锁合连接，以便所述驱动装置能够以一第一最大抗扭强度来驱动所述工具头工作；
当包括第二锁定组件的工具头安装到所述工具头安装部上时，所述工 具头能借助所述第二锁定组件和所述第二安装组件实现形状锁合和/或力锁合连接以便所述驱动装置能够以一大于所述第一最大抗扭强度的第二最大抗扭强度来驱动所述工具头工作。
其中，第一最大抗扭矩强度是指手持式电动工具在正常工作时，所述驱动装置与工具头不松脱的极限安装强度，具体可以为0～5N﹒m，第二最大抗扭矩强度是指手持式电动工具在正常工作时，所述驱动装置与工具头不松脱的极限安装强度，具体可以为0～30N﹒m。
在一些实施例中，如图7所示，所述第一安装组件被构造为第一卡接单元11，如图1所示，所述第一锁定组件被构造为第二卡接单元42，当包括第一锁定组件的工具头(例如吹风头)安装到所述工具头安装部上时，所述工具头能够借助所述第二卡接单元42和所述第一卡接单元11实现卡接配合，以便所述驱动装置能够以所述第一最大抗扭矩强度来驱动所述工具头工作。
在一些实施例中，如图7所示，所述第二安装组件被构造为第一锁止单元13，如图10所示，所述第二锁定组件被构造为第二锁止单元90，当包括第二锁定组件的工具头(例如如图10所示的电动钻头)安装到所述工具头安装部上时，所述工具头能够借助所述第二锁止单元90和所述第一锁止单元13实现卡锁连接，以便所述驱动装置能够以所述第二最大抗扭矩强度来驱动所述工具头工作。
具体的，如图1和7所示，所述第一卡接单元11包括第一限位孔111、第一挡止件112和第二挡止件113，所述第一锁止单元包括第二限位台131和固定台132；
当包括所述第二卡接单元42的工具头(例如吹风头)安装到所述工具头安装部上且所述第二卡接单元42包括第一限位台421、第一卡接件422和第二卡接件423时，所述第一限位台421与所述第一卡接单元11的第一限位孔111配合，所述第一卡接件422与所述第一卡接单元11的第一挡止件112配合，所述第二卡接件423与所述第一卡接单元11的第二挡止件113配合。
如图7和图10所示，当包括所述第二锁止单元90的电动钻头安装到 所述工具头安装部上且所述第二锁止单元90包括第二限位孔901和搭接件902时，所述第二限位孔901与所述第二限位台131配合，所述搭接件902与所述固定台132配合。
在实际应用中，可以根据需求选择第一安装组件或第二安装组件与不同形式的工具头连接，能够提高驱动装置的连接适配性。
在一些实施例中，如图8-9所示，所述驱动单元2包括电机，所述减速从动单元3还包括第三齿轮31、联动齿轮32和第四齿轮33，所述联动齿轮32包括同轴设置的输入齿轮321和输出齿轮322，所述输入齿轮321的外径大于所述输出齿轮322的外径，所述第三齿轮31与所述输入齿轮321的外径比大于所述输出齿轮322与所述第四齿轮33的外径比；
所述电机与所述第三齿轮31同轴连接，所述第三齿轮31与所述输入齿轮321啮合，所述输出齿轮322与所述第四齿轮33啮合，所述第四齿轮33与所述从动元件固定连接。
在实际应用中，如果不设置所述联动齿轮32，而将所述第四齿轮33和所述第三齿轮31直接啮合，为了使得所述减速从动单元3输出较小的转速，需要将所述第四齿轮33的直径设置得较大，将导致所述减速从动单元3在水平方向的尺寸较大，而通过设置所述联动齿轮32，所述联动齿轮32可以对所述电机输出的转速进行多级减速，从而使得所述减速从动单元3在输出较小的转速的同时也不过分占用所述驱动装置在水平方向的空间。
本实施例提供的便携可拆吹风装置的吹风头的安装及操作过程如下：
首先，将所述吹风头上的驱动连接元件51与所述减速从动单元3的从动元件34对位，实现所述驱动连接元件51与所述从动元件34的啮合；
其次，将所述吹风头上的所述第二卡接单元42与所述驱动装置上的所述第一安装组件11卡接，实现所述吹风头与所述驱动装置的锁定；
再次，操作驱动装置使驱动单元2输出动力，驱动单元2输出的动力依次经过减速从动单元3、减速从动单元3的从动元件34、吹风头的驱动连接元件51、增速传动单元5和风机，使风机相对于所述吹风头的涡壳转动；
然后，通过转动的风机进行吹风动作；
最后，操作所述驱动装置使所述驱动单元2停止动力输出，并拆开所述第二卡接单元42和所述第一安装组件11，将所述驱动装置和吹风头分别收纳。
以上实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (10)

  1. 一种吹风头，其特征在于，用于吹风装置，所述吹风头包括涡壳(4)、设置于所述涡壳内的风扇单元，以及至少一个连接单元，所述风扇单元包括风扇(6)和增速传动单元(5)，所述连接单元包括驱动连接元件(51)；
    当所述吹风头可拆卸地安装到包括减速从动单元(3)的驱动装置上时，所述增速传动单元(5)通过所述驱动连接元件(51)与所述减速传动单元(3)实现动力耦合，使得所述驱动装置能够对所述增速传动单元(5)施加由所述减速传动单元(3)减速得到的第一转速，并实现以大于所述第一转速的第二转速驱动所述风扇(6)旋转。
  2. 根据权利要求1所述的吹风头，其特征在于，所述增速传动单元(5)包括至少两个具有不同直径的传动元件，其中用于输入动力的传动元件与其中用于输出动力的传动元件的传动比小于1。
  3. 根据权利要求1所述的吹风头，其特征在于，所述吹风头还包括至少一个风筒(7)，所述涡壳(4)包括至少一个出风通道(43)，所述风筒(7)的用于与所述出风通道(43)接触的区域被构造成第一形状，所述出风通道(43)的用于与所述风筒(7)接触的区域被构造成能够与所述第一形状实现密封连接的第二形状。
  4. 根据权利要求3所述的吹风头，其特征在于，所述风筒(7)包括用于与所述出风通道(43)连接的第一筒口(71)，所述第一形状为沿所述第一筒口(71)的周向形成的、以封闭回路形式存在的并具有限位部(712)的密封筋(711)，所述第二形状为凸出于所述出风通道(43)的表面的并与所述限位部(712)对应设置的凸起(44)，当所述风筒(7)与所述出风通道(43)密封连接时，所述凸起(44)卡接于所述限位部(712)，所述出风通道(43)的位于所述凸起(44)周边的表面抵靠在所述密封筋(711)上。
  5. 根据权利要求3所述的吹风头，其特征在于，所述出风通道(43)沿所述涡壳的周向设置，所述风筒(7)和所述出风通道(43)具有相同的第一轴线，当所述吹风头安装到包括手柄的驱动装置上时，所述第一轴线与所述手柄的第二轴线的夹角小于等于预设夹角。
  6. 根据权利要求3所述的一种吹风头，其特征在于，所述增速传动单元(5)还包括与所述风扇(6)连接的输出端(54)，所述输出端(54)靠近所述涡壳(4)的中心区域设置，所述增速传动单元(5)的驱动连接元件(51)靠近所述出风通道(43)设置。
  7. 根据权利要求1所述的一种吹风头，其特征在于，所述涡壳(4)包括相对设置的可拆卸连接的第一涡壳(45)和第二涡壳(46)，所述第一涡壳(45)和所述第二涡壳(46)中的至少一个的边缘连接部位包括周向设置的导向密封件(453)，所述导向密封件(453)沿所述涡壳(4)的轴向的长度大于等于预设长度，当所述第一涡壳(45)与所述第二涡壳(46)连接时，所述涡壳(4)能够借助所述导向密封件实现导向，当所述第一涡壳(45)与所述第二涡壳(46)连接后，所述涡壳(4)能够借助所述导向密封件实现密封。
  8. 根据权利要求1所述的吹风头，其特征在于，所述连接单元还包括第一锁定组件，当所述吹风头安装到包括第一安装组件的所述驱动装置上时，所述吹风头能够借助所述第一锁定组件和所述第一安装组件实现形状锁合和/或力锁合连接。
  9. 根据权利要求8所述的吹风头，其特征在于，所述第一锁定组件被构造为第二卡接单元(42)，当包括所述第二卡接单元(42)的吹风头安装到包括所述第一安装组件的所述驱动装置上时，所述吹风头能够借助所述第二卡接单元(42)与被构造为第一卡接单元(11)的所述第一安装组件实现卡接配合。
  10. 一种便携可拆吹风装置，其特征在于，包括驱动装置和如权利要求1-9任一所述的吹风头，所述驱动装置包括减速从动单元(3)，所述吹风头包括涡壳(4)、设置于所述涡壳内的风扇单元，以及至少一个连接单元，所述风扇单元包括风扇(6)和增速传动单元(5)，所述连接单元包括驱动连接元件(51)；
    当所述吹风头可拆卸地安装到所述驱动装置上时，所述增速传动单元(5)通过所述驱动连接元件(51)与所述减速传动单元(3)实现动力耦合，使得所述驱动装置能够对所述增速传动单元(5)施加由所述减速传动单元(3)减速得到的第一转速，并实现以大于所述第一转速的第二转速驱动所述风扇(6)旋转。
PCT/CN2020/137016 2020-09-29 2020-12-17 一种吹风头及具有其的便携可拆吹风装置 WO2022068085A1 (zh)

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