WO2022207012A1 - 电机轴安装结构、贯流风机及空调 - Google Patents

电机轴安装结构、贯流风机及空调 Download PDF

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Publication number
WO2022207012A1
WO2022207012A1 PCT/CN2022/095618 CN2022095618W WO2022207012A1 WO 2022207012 A1 WO2022207012 A1 WO 2022207012A1 CN 2022095618 W CN2022095618 W CN 2022095618W WO 2022207012 A1 WO2022207012 A1 WO 2022207012A1
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WO
WIPO (PCT)
Prior art keywords
limiting
motor shaft
limit
wall
hole
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2022/095618
Other languages
English (en)
French (fr)
Inventor
李永德
王亮
李建科
高丽丽
崔世举
马振豪
程杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
Original Assignee
Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
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
Application filed by Qingdao Haier Air Conditioner Gen Corp Ltd, Qingdao Haier Air Conditioning Electric Co Ltd, Haier Smart Home Co Ltd filed Critical Qingdao Haier Air Conditioner Gen Corp Ltd
Publication of WO2022207012A1 publication Critical patent/WO2022207012A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0025—Cross-flow or tangential fans
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/003—Couplings; Details of shafts

Definitions

  • the invention relates to the technical field of air conditioners, in particular to a motor shaft installation structure, a cross-flow fan and an air conditioner.
  • the existing air conditioner or its indoor unit (hereinafter referred to as "air conditioner") arranged in a conditioned room is usually provided with an air inlet and an air outlet, as well as a heat exchanger and a fan arranged inside the air conditioner.
  • the heat exchanger can act as an evaporator or a condenser to achieve the function of cooling or heating.
  • the fan often in the form of a cross-flow fan, draws air from a conditioned room (often referred to as "return air”) or fresh outdoor air into the air conditioner through an air inlet. Air is cooled or heated by passing over the heat exchanger in the air conditioner. The cooled or heated air is then sent into the room through the air outlet.
  • the cross-flow fan in the prior art is generally in the shape of a long cylinder, and the fan blades are arranged on the same circumference at intervals around the central axis of the cross-flow fan, and are then fixed together in the axial direction by two opposite fixing plates.
  • the cross-flow fan is arranged laterally in the air conditioner, and one end is provided with a fixed shaft extending outward along the axial direction of the cross-flow fan, and the fixed shaft is fixed on the frame of the air conditioner; the other end is provided with a shaft that also extends along the axial direction of the cross-flow fan.
  • Sleeve, the bushing is used to receive the motor shaft of the motor.
  • the cross-flow fan can be divided into an external type (that is, the bushing extends outward along the axis of the cross-flow fan) and the built-in type (that is, the bushing extends along the axis of the cross-flow fan). extending inward).
  • an external type that is, the bushing extends outward along the axis of the cross-flow fan
  • the built-in type that is, the bushing extends along the axis of the cross-flow fan. extending inward).
  • a screw hole is usually provided on the shaft sleeve, and the screw is passed through the screw hole to make it fit with the shaft.
  • the surface of the motor shaft is in contact, and the friction force between the screw and the motor shaft is used to achieve the purpose of locking the motor shaft.
  • Chinese utility model patent CN209458156U discloses a fan blade motor shaft fixing structure.
  • the fan blade motor shaft fixing structure includes a motor shaft, a fan blade shaft barrel, a sleeve and an elastic part.
  • the inner surface of the elastic member is fitted with the motor shaft, and the inner surface of the sleeve connected with the elastic member can incline the axis of the motor shaft to the elastic member and face the wind.
  • the locking force in the direction of the blade shaft barrel makes the motor shaft and the sleeve form an axial lock.
  • the elastic part in the fixing structure of the fan blade motor shaft is arranged in the sleeve, and once the elastic part is damaged, only the entire cross-flow fan can be replaced, resulting in high replacement cost.
  • most of the existing cross-flow fans on the market do not have the matching structure of the elastic member and the sleeve described in the utility model patent, so the adaptability of the fixing structure of the fan motor shaft is poor.
  • the present invention provides a motor shaft installation structure, the motor shaft installation structure includes: a motor shaft, A plurality of limiting grooves spaced apart from each other along the axis of the motor shaft are formed on the circumferential wall of the motor shaft; a bushing is configured to receive the motor shaft, and a peripheral wall of the bushing is formed with a mounting hole; and an elastic limiting mechanism, the elastic limiting mechanism being detachably fixed in the mounting hole and configured to cooperate with at least one of the plurality of limiting grooves to form an interlock.
  • a motor shaft, a shaft sleeve and an elastic limiting mechanism are provided.
  • a plurality of limit slots spaced apart from each other along the axis of the motor shaft are provided on the circumferential wall of the motor shaft.
  • the bushing is configured to receive the motor shaft such that the motor shaft can be easily inserted into the bushing.
  • An installation hole is arranged on the peripheral wall of the shaft sleeve, and the elastic limiting mechanism is detachably fixed in the installation hole.
  • the elastic limiting mechanism is configured to cooperate with at least one of the plurality of limiting grooves to form an interlock.
  • the elastic limit mechanism fixed on the shaft sleeve can cooperate with at least one limit groove provided on the circumferential wall of the motor shaft to form an interlock, preventing the motor shaft from being relative to the shaft.
  • the sleeve moves in the axial and circumferential directions, and greatly improves the assembly efficiency of the motor shaft.
  • the locking degree between the motor shaft and the shaft sleeve depends on the pretensioning force of the elastic limiting mechanism. The difference in the degree of locking improves the qualification rate of the motor shaft assembly.
  • the motor shaft installation structure adopts an elastic limit mechanism to lock the motor shaft, which can effectively prevent the motor shaft from being deviated to one side due to the excessive locking torque and avoid the motor shaft from deviating during the rotation process. Its own axis further improves the assembly qualification rate of the motor shaft.
  • the elastic limiting mechanism of the motor shaft mounting structure is configured to be detachably fixed in the mounting hole of the shaft sleeve, rather than being fixed inside the shaft sleeve, so when the elastic limiting mechanism is damaged, only the elastic limiting mechanism needs to be replaced.
  • the positioning mechanism eliminates the need to replace the entire rotating component (such as the cross-flow fan blade, etc.), which reduces the replacement cost.
  • the existing cross-flow fans on the market are generally provided with screw holes for receiving screws on the shaft sleeve.
  • the inventive motor shaft mounting structure can be applied to most existing cross-flow fans, and has good adaptability.
  • a limit plane extending along the axis is formed on the circumferential wall, the limit plane extends to the free end of the motor shaft, and the plurality of limit planes are formed.
  • a bit slot is formed on the limiting plane. Setting a limit plane on the circumferential wall of the motor shaft can effectively prevent the motor shaft from sliding with the shaft sleeve in the circumferential direction during the rotation process and affecting the transmission efficiency.
  • the setting of the limit plane can also limit the relative position between the motor shaft and the shaft sleeve, which is beneficial to the mutual cooperation between the elastic limit mechanism fixed on the shaft sleeve and the limit groove set on the limit plane, so as to improve the Assembly efficiency of the motor shaft.
  • the elastic limit mechanism includes a limit block, an elastic member, and a first fastener, wherein the limit block has opposite large ends and small ends, so The small end can be inserted into the limiting groove, and between the large end and the small end, there is formed an opposite limiting straight wall and a limiting inclined wall, and the limiting inclined wall faces from the small end toward the limiting groove.
  • the big end extends obliquely away from the limiting straight wall;
  • the elastic piece has a first end abutting against the big end and a second end abutting against the first fastener; and the first fastener A piece is matched with the mounting hole to constrain the limit block in at least one of the limit grooves by the pretension applied by the elastic piece, and the limit straight wall is larger than the limit inclined wall closer to the free end of the motor shaft.
  • the first fastener is configured to match the mounting hole, so that a detachable fixed connection is formed between the elastic limiting mechanism and the shaft sleeve, which facilitates replacement and maintenance of the elastic limiting mechanism.
  • the bit block is constrained in at least one limit slot.
  • the limit block is arranged to have opposite big end and small end, between the big end and the small end there are opposite limit straight wall and limit inclined wall, and when the limit block is constrained in the limit slot, the limit The straight wall is closer to the free end of the motor shaft than the limit inclined wall.
  • the motor shaft can be easily inserted into the shaft sleeve.
  • the limit block When the limit block is constrained in the limit slot, if an outward pulling force is applied on the motor shaft, the limit straight wall will abut against the limit slot to exert a reaction force opposite to the pulling force on the motor shaft, so that The motor shaft cannot be pulled out and is constrained in the bushing.
  • a plurality of limit units parallel to and spaced apart from each other along the axis of the motor shaft are arranged on the limit block, and each of the limit units includes opposite The limit straight wall and the limit inclined wall.
  • an annular blocking piece is formed at the bottom of the mounting hole, and the annular blocking piece is configured to abut against the large end.
  • a predetermined included angle is formed between the limiting straight wall and the limiting inclined wall, and the predetermined included angle ranges from 20° to 70°.
  • the predetermined included angle is 45°. Setting the predetermined angle between the limit straight wall and the limit inclined wall to 45° can not only make the limit block simple in structure and easy to manufacture, but also make the horizontal component force and The component force distribution in the vertical direction is more uniform.
  • each of the limiting slots has an enlarged opening and includes opposite straight walls of the limiting slot and guide walls of the limiting slot, and the straight walls of the limiting slot can be connected with the straight walls of the limiting slot.
  • the limiting straight walls abut against each other, and the limiting groove guiding walls can be matched with the limiting inclined walls.
  • An enlarged opening is arranged on each limit slot, so that the limit block can be introduced into the limit slot more conveniently.
  • the limit groove is provided with opposite limit groove straight walls and limit groove guide walls, and the limit groove straight walls can abut against the limit straight walls, and the limit groove guide walls can be matched with the limit inclined walls, so that The limit slot can be matched with the limit block.
  • each of the limiting slots is configured as a blind hole with a circular cross-section
  • the blind hole has an outwardly enlarged annular bell mouth and a vertical hole wall
  • the The hole wall can abut against the limiting straight wall.
  • the limiting block includes a wrench portion formed on the large end, and the first fastener is provided with a central through hole so that the center can pass through the center.
  • the through hole and the wrenching portion rotate the limit block to release the interlock between the limit block and the limit slot.
  • a tool such as a manual screwdriver, an electric screwdriver, etc.
  • a tool can be used to pass through the central through hole provided on the first fastener, and rotate the lever on the big end of the limit block.
  • the limit block has a magnetic permeability, so that the interlock between the limit block and the limit slot can be released by a magnetic tool.
  • a limit recess is formed on the peripheral wall of the shaft sleeve, the mounting hole is arranged in the limit recess, and the elastic limit mechanism includes a limit An elastic sheet and a second fastener, wherein the second fastener is matched with the mounting hole; the limiting elastic sheet has a fixing portion and an elastic limiting portion extending outward from the fixing portion, the fixing The fixing portion is configured to be nested in the limiting recess, and a fixing hole opposite to the mounting hole and receiving the end of the second fastener is formed on the fixing portion, the elastic limit The bits are configured to be insertable into at least one of the limiting grooves to form an interlock.
  • the fixing part of the limit shrapnel is nested in the limit sink groove, so that the limit shrapnel can be more conveniently positioned on the shaft sleeve, which is convenient for installation;
  • the part is limited in the limit sink to prevent displacement between the limit spring and the shaft sleeve.
  • the fixing portion is provided with a fixing hole which is opposite to the installation hole and can receive the end of the second fastener, so that the limiting elastic piece can form a detachable fixed connection with the shaft sleeve through the second fastener.
  • the elastic limiting portion can be inserted into at least one limiting groove and cooperate to form an interlock, so that the assembly efficiency of the motor shaft is significantly improved.
  • the present invention also provides a cross-flow fan, the cross-flow fan includes: a cross-flow fan body; a motor, the motor has the motor shaft mounting structure according to the above, wherein the shaft sleeve is fixed on the cross-flow fan in one longitudinal end of the fan body.
  • the assembly efficiency of the cross-flow fan of the present invention is significantly improved.
  • the elastic limiting mechanism is detachably fixed on the shaft sleeve, when the elastic limiting mechanism is damaged and needs to be replaced, the elastic limiting mechanism can be easily disassembled without replacing the entire cross-flow fan, which greatly reduces the replacement cost.
  • the present invention also provides an air conditioner comprising the cross-flow fan according to the above.
  • the assembly efficiency of the air conditioner of the present invention is significantly improved, and the replacement cost of the present invention is significantly reduced.
  • Fig. 1 is the exploded schematic diagram of the first embodiment of the cross-flow fan of the present invention
  • FIG. 2 is a schematic structural diagram of an embodiment of the motor of the first embodiment of the cross-flow fan of the present invention
  • FIG. 3 is a partial enlarged view of part A of the embodiment of the motor of the first embodiment of the cross-flow fan of the present invention shown in FIG. 2;
  • FIG. 4 is a right side view of an embodiment of the cross-flow fan body of the first embodiment of the cross-flow fan of the present invention
  • FIG. 5 is a schematic cross-sectional view of the embodiment of the cross-flow fan body of the first embodiment of the cross-flow fan of the present invention taken along the A-A section line shown in FIG. 4;
  • FIG. 6 is a schematic structural diagram of an embodiment of a limiting block of the first embodiment of the cross-flow fan of the present invention.
  • FIG. 7 is a schematic structural diagram of an embodiment of the first fastener of the first embodiment of the cross-flow fan of the present invention.
  • Fig. 8 is the exploded schematic diagram of the second embodiment of the cross-flow fan of the present invention.
  • FIG. 9 is a schematic structural diagram of an embodiment of the motor of the second embodiment of the cross-flow fan of the present invention.
  • Fig. 10 is a partial enlarged view of part B of the embodiment of the motor of the second embodiment of the cross-flow fan of the present invention shown in Fig. 9;
  • FIG. 11 is a schematic structural diagram of an embodiment of a limiting block of the second embodiment of the cross-flow fan of the present invention.
  • Fig. 12 is the exploded schematic diagram of the third embodiment of the cross-flow fan of the present invention.
  • FIG. 13 is a right side view of the embodiment of the cross-flow fan body of the third embodiment of the cross-flow fan of the present invention.
  • FIG. 14 is a cross-sectional schematic diagram of the embodiment of the cross-flow fan body of the third embodiment of the cross-flow fan of the present invention taken along the B-B section line shown in FIG. 13;
  • FIG. 15 is a schematic structural diagram of an embodiment of the elastic limit block of the third embodiment of the cross-flow fan of the present invention.
  • Cross-flow fan 10. Cross-flow fan body; 11. Blade; 111. Round hole; 111a, first hole; 111b, second hole; 12, longitudinal end wall; 20, motor; Installation structure; 31, motor shaft; 311, circumferential wall; 3111, limit plane; 312, limit slot; 3121, first limit slot; 3121a, opening; 3121b, limit slot straight wall; 3121c, limit slot guide wall; 3121d, bottom wall of limit groove; 3122, second limit groove; 3122a, annular bell mouth; 3122b, hole wall; 313, guide part; 314, free end; 315, fixed end; 32, shaft sleeve; 321 , peripheral wall, 3211, limit sink; 3212, mounting hole; 32121, annular block; 322, shaft hole; 33, elastic limit mechanism; 331, limit block; 331a, first limit block; 331b, first limit Second limit block; 3311, big end; 3312, wrench part; 33121, first wrench groove; 3313, small end; 3314, limit unit; 3314a, first limit
  • Fastener 3331, central through hole; 3332, second wrenching groove; 3333, top end; 3333a, annular wall; 3334, outer side wall; 3335, bottom end; 3342, elastic limit part; 33421, vertical limit end wall; 33422, inclined limit bottom wall; 335, second fastener; 3351, nut; 33511, third wrench groove; 3352, screw.
  • connection should be understood in a broad sense, for example, it may be a fixed connection, or a It is a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can also be the internal communication of two components.
  • connection should be understood in a broad sense, for example, it may be a fixed connection, or a It is a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can also be the internal communication of two components.
  • the present invention provides a motor shaft installation structure 30, the motor shaft installation structure 30 includes: a motor shaft 31, A plurality of limiting slots 312 spaced apart from each other along the axis of the motor shaft 31 are formed on the circumferential wall 311 of the motor shaft 31 ; the shaft sleeve 32 is configured to receive the motor shaft 31 and is formed on the circumferential wall 321 of the shaft sleeve 32 There are mounting holes 3212; and an elastic limiting mechanism 33, the elastic limiting mechanism 33 is detachably fixed in the mounting hole 3212, and is configured to cooperate with at least one of the plurality of limiting grooves 312 to form an interlock.
  • the motor shaft mounting structure 30 of the present invention can form an interlock.
  • the motor shaft 31 can be easily assembled into the shaft sleeve 32, and the assembly efficiency is significantly improved.
  • the elastic limiting mechanism 33 in the motor shaft mounting structure 30 is detachably fixed in the mounting hole 3212 on the shaft sleeve 32 instead of being fixed inside the shaft sleeve 32, so that when the elastic limiting mechanism 33 is damaged, The elastic limiting mechanism 33 can be easily disassembled without replacing the entire rotating part, thus reducing the replacement cost.
  • the motor shaft mounting structure 30 of the present invention can be applied to most existing cross-flow fans, and has good adaptability.
  • FIG. 1 is an exploded schematic diagram of the first embodiment of the cross-flow fan of the present invention
  • FIG. 2 is a schematic structural diagram of an embodiment of the motor of the first embodiment of the cross-flow fan of the present invention
  • Figure 4 is a right side view of the embodiment of the cross-flow fan body of the first embodiment of the cross-flow fan of the present invention
  • Figure 5 It is a cross-sectional schematic diagram of the embodiment of the cross-flow fan body of the first embodiment of the cross-flow fan of the present invention along the A-A section line shown in FIG. 4
  • FIG. 6 is a cross-flow fan of the first embodiment of the present invention.
  • Fig. 7 is a schematic structural diagram of an embodiment of the first fastener of the first embodiment of the cross-flow fan of the present invention
  • Fig. 7 is a schematic structural diagram of an embodiment of the first fastener of the first embodiment of the cross-flow fan of the present invention
  • FIG. 8 is the second implementation of the cross-flow fan of the present invention
  • 9 is a schematic structural diagram of an embodiment of the motor of the second embodiment of the cross-flow fan of the present invention
  • FIG. 10 is the motor of the second embodiment of the cross-flow fan of the present invention shown in FIG. 9 .
  • FIG. 11 is a schematic structural diagram of an embodiment of the limiting block of the second embodiment of the cross-flow fan of the present invention
  • FIG. 12 is the explosion of the third embodiment of the cross-flow fan of the present invention.
  • Schematic diagram FIG. 13 is a right side view of the embodiment of the cross-flow fan body of the third embodiment of the cross-flow fan of the present invention
  • FIG. 13 is a right side view of the embodiment of the cross-flow fan body of the third embodiment of the cross-flow fan of the present invention
  • FIG. 14 is an embodiment of the cross-flow fan body of the third embodiment of the cross-flow fan of the present invention.
  • FIG. 15 is a schematic structural diagram of an embodiment of the elastic limit block of the third embodiment of the cross-flow fan of the present invention.
  • the air conditioner (not shown in the figure) of the present invention is a wall-mounted indoor unit placed indoors.
  • the air conditioner may also be an integrated air conditioner or other suitable form of air conditioner.
  • the air conditioner includes, but is not limited to, a frame, a heat exchanger, a cross-flow fan 1, a wind deflector and other components.
  • the skeleton is integrally formed by an injection molding process using a suitable resin material, such as ABS plastic, ABS/PP plastic, and the like.
  • An air inlet for the air conditioner is formed on the top of the skeleton.
  • An air outlet is formed in the lower part of the front side (the side facing the user) of the skeleton.
  • An air deflector for adjusting the air outlet direction is arranged in the air outlet.
  • the frame is provided with an accommodation space that can accommodate the cross-flow fan 1 .
  • the heat exchanger is installed on the upper part of the cross-flow fan body 10 .
  • the cross-flow fan 1 includes a cross-flow fan body 10 and a motor 20 that can drive the cross-flow fan body 10 to rotate.
  • the cross-flow fan body 10 is laterally arranged in the frame of the air conditioner, that is, extends along the length direction of the air conditioner.
  • the cross-flow fan body 10 is integrally formed using a suitable resin material through an injection molding process, such as glass fiber ABS plastic, glass fiber AS plastic, and the like.
  • the cross-flow fan body 10 can also be made by other suitable processes.
  • the cross-flow fan body 10 has a substantially long cylindrical shape.
  • the cross-flow fan body 10 has a plurality of blades 11 .
  • the cross-flow fan body 10 has two longitudinal end walls facing each other (only one longitudinal end wall 12 is shown in the figure). Each blade 11 is arranged to extend substantially along the central axis C of the cross-flow fan body 10, and both ends are fixed to the two longitudinal end walls, respectively.
  • the blades 11 may be straight, helical, or other suitable shapes.
  • a fixed shaft (not shown in the figure) is provided on one longitudinal end wall of the cross-flow fan body 10 .
  • the fixed shaft is configured to extend outwardly from the longitudinal end wall along the central axis C of the cross-flow fan body 10 .
  • the fixed shaft is rotatably fixed in the fixed shaft hole (not shown in the figure) of the frame.
  • a shaft sleeve 32 is provided on the other longitudinal end wall 12 of the cross-flow fan body 10 .
  • the shaft sleeve 32 is configured to extend inward from the longitudinal end wall 12 along the central axis C of the cross-flow fan body 10 , that is, the cross-flow fan 1 is a built-in cross-flow fan fan. Under the same longitudinal length, the built-in cross-flow fan has a longer blade length, so the air output is larger.
  • Round holes 111 are provided on the two blades 11 opposite to the mounting holes 3212 on the shaft sleeve 32 .
  • the circular hole 111 includes a first hole portion 111a and a second hole portion 111b.
  • the first hole portion 111a and the second hole portion 111b are respectively disposed on the two blades 11 and enclose a circular hole 111 having a substantially circular shape, so that the fastener can be detached and assembled through the circular hole 111 .
  • the traditional built-in cross-flow fan generally needs to remove the blade opposite to the installation hole 3212 on the shaft sleeve 32, so as to remove and install the fastener from the empty blade, so that during the operation of the cross-flow fan, the There are obvious periodic abnormal sounds at the vacant leaves.
  • the cross-flow fan body 10 of the cross-flow fan 1 of the present invention retains the blades 11 opposite to the mounting holes 3212 on the shaft sleeve 32, thus reducing the loss of the blades 11 The resulting abnormal sound, which in turn reduces the overall noise level of the air conditioner.
  • the shaft sleeve 32 may also be configured to extend outward from the longitudinal end wall 12 along the central axis C of the cross-flow fan body 10 , that is, the cross-flow fan 1 is configured as an external cross-flow fan.
  • the motor 20 is a stepper motor.
  • the motor 20 may also be a brushless motor, a servo motor, or other suitable form of motor.
  • the motor 20 is installed in a motor accommodating cavity (not shown in the figure) of the air conditioner frame, and forms an electrical connection with a control system (not shown in the figure) of the air conditioner.
  • the electrical connection is wired to reduce the manufacturing cost.
  • the electrical connection may also be a wireless connection.
  • the motor 20 has a motor shaft mounting structure 30 .
  • motor shaft mounting structure 30 of the present invention includes but is not limited to the following embodiments.
  • the first embodiment of the motor shaft mounting structure 30 is the first embodiment of the motor shaft mounting structure 30
  • the motor shaft mounting structure 30 includes a motor shaft 31 , a shaft sleeve 32 and an elastic limiting mechanism 33 .
  • the motor shaft 31 is formed on the motor 20 and extends outward along its central axis C (as shown in FIG. 1 , the central axis of the motor shaft 31 coincides with the central axis of the cross-flow fan body 10 at this time).
  • the motor shaft 31 can be made of alloy materials such as carbon steel, such as 35-gauge steel, 45-gauge steel, etc., or other suitable materials.
  • a limiting plane 3111 is provided on the circumferential wall 311 of the motor shaft 31 .
  • the limiting plane 3111 is configured to extend from a position close to the fixed end 315 of the motor shaft 31 to the free end 314 in a direction parallel to the central axis C of the motor shaft 31 .
  • the limiting plane 3111 can be matched with the shaft hole 322 on the shaft sleeve 32 to prevent the motor shaft 31 from sliding in the circumferential direction with the shaft sleeve 32 during the rotation process, thereby affecting the transmission efficiency.
  • the number of the limiting planes 3111 can be set to multiple, such as 2, 3 or other suitable numbers, to further enhance the effective connection between the motor shaft 31 and the shaft hole 322, as long as it can be matched with the shaft hole 322 .
  • a guide portion 313 is formed on the free end 314 of the motor shaft 31.
  • the guide portion 313 is configured as an annular wall with a gradually decreasing cross-section toward the free end 314 , so that the motor shaft 31 can be inserted into the shaft hole 322 more conveniently, thereby improving assembly efficiency.
  • the limiting plane 3111 is provided with a plurality of limiting grooves 312 that are evenly spaced along the central axis C of the motor shaft 31 .
  • the number of the limiting grooves 312 can be adjusted according to actual needs.
  • the distance between two adjacent limiting grooves 312 can also be adjusted according to actual needs.
  • each limiting slot 312 is configured as a first limiting slot 3121 .
  • the first limiting slot 3121 has a structure matching with the first limiting block 331a in the elastic limiting mechanism 33, so that each first limiting slot 3121 can cooperate with the first limiting block 331a to form an interlock.
  • the first limiting slot 3121 has an enlarged opening 3121a, and includes a limiting slot straight wall 3121b, a limiting slot guide wall 3121c, and a limiting slot bottom wall 3121d.
  • the bottom wall 3121d of the limiting slot is a substantially flat wall and two ends thereof are respectively connected with the straight limiting slot wall 3121b and the limiting slot guide wall 3121c.
  • the arrangement of the bottom wall 3121d of the limiting groove can increase the transverse section of the first limiting groove 3121, so that the corresponding opening 3121a is larger, which facilitates the assembly of the motor shaft 31.
  • the bottom wall 3121d of the limiting groove may not be provided in the first limiting groove 3121, that is, the straight wall 3121b of the limiting groove is directly connected to the guide wall 3121c of the limiting groove.
  • the straight wall 3121b of the limiting slot is configured to be closer to the free end 314 of the motor shaft 31 than the guiding wall 3121c of the limiting slot, so that the motor shaft 31 can cooperate with the elastic mechanism 33 to form an interlock.
  • the straight wall 3121b of the limiting slot and the guiding wall 3121c of the limiting slot form a predetermined angle ⁇ (ie, the angle between the guiding wall 3121c of the limiting slot and the vertical plane when the motor shaft 31 is placed in the horizontal direction).
  • the range of the predetermined included angle ⁇ is 20°-70°.
  • the predetermined angle ⁇ is 45°, so that the structure of the first limiting groove 3121 is simple and easy to manufacture.
  • the shaft sleeve 32 is arranged inside the longitudinal end wall 12 of the cross-flow fan body 10 , that is, inside the cross-flow fan body 10 .
  • the shaft sleeve 32 can be made of carbon steel, aluminum alloy, or other suitable materials.
  • the shaft sleeve 32 can be integrally formed with the cross-flow fan body 10 by an insert injection molding process, or other suitable processes can be used.
  • the shaft sleeve 32 has a shaft hole 322 .
  • the shaft hole 322 is configured to receive the motor shaft 31 .
  • the installation spacing is 0.2mm, or other suitable distance larger or smaller than 0.2mm.
  • a limit hole wall (not shown in the figure) that matches the limit plane 3111 is formed on the shaft hole 322 .
  • the wall of the limiting hole cooperates with the limiting plane 3111 , so that the motor shaft 31 is limited in the shaft hole 322 without circumferential sliding.
  • the number of the limiting hole walls can be set to multiple, for example, 2, 3 or other suitable numbers, as long as they can match the limiting plane 3111 .
  • a mounting hole 3212 is provided on the peripheral wall 321 of the shaft sleeve 32 .
  • the mounting holes 3212 are configured to receive fasteners in the elastic limiting mechanism 33 , so that the elastic limiting mechanism 33 is detachably fixed on the shaft sleeve 32 .
  • the mounting hole 3212 has a substantially circular cross-section.
  • the bottom wall of the mounting hole 3212 is formed with an annular blocking piece 32121 extending from the edge of the mounting hole 3212 to the center of the mounting hole 3212 .
  • the annular blocking piece 32121 can limit the elastic limiting mechanism 33 in the installation hole 3212 , preventing the elastic limiting mechanism 33 from being taken away during the process of entering or pulling out the shaft sleeve 32 of the motor shaft 31 .
  • the elastic limiting mechanism 33 includes a limiting block 331 , an elastic member 332 , and a first fastener 333 .
  • the limiting block 331 is configured as a first limiting block 331a.
  • the first limiting block 331a has a large end 3311 and a small end 3313 opposite to each other.
  • a wrench portion 3312 is formed on the large end 3311 .
  • the wrench portion 3312 is provided with a first wrench groove 33121 (as shown in FIG. 1 ).
  • the first wrenching groove 33121 is set as a cross groove.
  • the first wrenching groove 33121 can also be configured as a slot, or other suitable forms.
  • a suitable tool such as a Phillips screwdriver, etc.
  • the first wrenching groove 33121 can also be configured as a slot, or other suitable forms.
  • FIG. 6 between the big end 3311 and the small end 3313 are three limiting units 3314 parallel to each other and spaced apart from each other, which are the first limiting unit 3314a, the second limiting unit 3314b, and the third limiting unit 3314b in sequence.
  • Limiting unit 3314c Limiting unit 3314c.
  • Each limiting unit 3314 can be matched with the corresponding first limiting groove 3121 .
  • each limiting unit 3314 includes a limiting straight wall 33141 , a limiting flat wall 33143 and a limiting inclined wall 33142 . Two ends of the limiting flat wall 33143 are respectively connected with the limiting straight wall 33141 and the limiting inclined wall 33142 . The disposition of the limiting flat wall 33143 can increase the transverse cross-section of each limiting unit 3314 so as to cooperate with the bottom wall 3121d of the limiting groove.
  • the limiting flat wall 33143 may not be provided in the limiting unit 3314 , that is, the limiting straight wall 33141 is directly connected to the limiting inclined wall 33142 .
  • the limiting straight wall 33141 and the limiting inclined wall 33142 form a predetermined angle ⁇ (ie, the angle formed by the limiting inclined wall 33142 and the vertical plane based on the orientation shown in FIG. 6 ).
  • the predetermined angle ⁇ is configured to be equal to the predetermined angle ⁇ .
  • the range of the predetermined included angle ⁇ is 20°-70°.
  • the predetermined angle ⁇ is 45°, so that the structure of the first limiting block 331a is simple and easy to manufacture.
  • the limiting straight wall 33141 is configured to abut against the limiting groove straight wall 3121b, and the limiting inclined wall 33142 can be matched with the limiting groove guide wall 3121c.
  • the elastic member 332 includes a first end 3321 abutting against the large end 3311 of the limit block 331 (ie, the first limit block 331 a ) and a first end The second end 3322 against which the piece 333 abuts.
  • the elastic member 332 is provided as a spring and has a suitable stiffness coefficient k. A suitable stiffness coefficient k can be obtained experimentally or empirically.
  • the elastic limit mechanism 33 is fixed in the installation hole 3212, the elastic member 332 can apply pretension to the first limit block 331a, so that each limit unit 3314 on the first limit block 331a can be easily inserted into the corresponding first limiting groove 3121.
  • the elastic member 332 can be made of a suitable alloy material, such as carbon steel, alloy steel, etc., so as to improve the service life of the elastic member 332 .
  • the first fastener 333 is generally a hollow cylinder with a central through hole 3331 , and has a top end 3333 and an opposite bottom end 3335 .
  • a radially inwardly extending annular wall 3333a is formed on the top end 3333.
  • the inner diameter of the annular wall 3333a is smaller than the diameter of the central through hole 3331 .
  • the elastic piece 332 and the first limiting block 331a can enter into the central through hole 3331 through the opening on the bottom end 3335, and the second end 3322 of the elastic piece 332 can abut against the annular wall 3333a and be limited to the first tight end. within firmware 333.
  • a second wrenching groove 3332 is formed on the top end 3333 .
  • the second wrenching groove 3332 is set as a slot, so that the first fastener 333 can be disassembled and assembled by a tool.
  • the second wrenching groove 3332 can also be provided as a cross groove, or other suitable forms.
  • the first fastener 333 is configured to match with the mounting hole 3212 on the shaft sleeve 32 , so that the elastic limiting mechanism 33 can be fixed on the shaft sleeve 32 .
  • the outer side wall 3334 of the first fastener 333 is provided with threads, and the inner wall of the mounting hole 3212 is provided with threads matching it, so that the first fastener 333 is detachably fixed in the mounting hole 3212 and form a firm threaded connection.
  • a snap connection can also be formed between the first fastener 333 and the installation hole 3212, or other suitable connection methods.
  • the first fastener 333 can be made of a suitable alloy material, such as carbon steel, alloy steel, etc., so as to improve the service life of the first fastener 333 .
  • the elastic limiting mechanism 33 configured with the first limiting block 331 a can be fixed in the mounting hole 3212 on the shaft sleeve 32 first. Abut the first end 3321 of the elastic piece 332 against the wrenching part 3312 of the first limit block 331a, and place the elastic piece 332 and the first limit block 331a in the first fastener 333, so that the elastic piece The second end 3322 of 332 abuts the inside of the top end 3333 of the first fastener 333 . The first fastener 333 is placed into the mounting hole 3212 on the shaft sleeve 32 through the circular hole 111 provided on the blade 11 .
  • the annular blocking piece 32121 at the bottom of the mounting hole 3212 can abut against the wrench portion 3312 on the first limiting block 331a, so that the elastic limiting mechanism 33 is constrained in the mounting hole 3212, and the first limiting block
  • the limiting unit 3314 on the 331a (including the first limiting unit 3314a, the second limiting unit 3314b and the third limiting unit 3314c) extends out of the mounting hole 3212 under the pretension of the elastic member 332.
  • the second wrenching groove 3332 on the first fastener 333 is twisted by a tool, so that the first fastener 333 is fixed into the mounting hole 3212 .
  • the motor shaft 31 is inserted into the shaft hole 322 on the shaft sleeve 32 .
  • the free end 314 of the motor shaft 31 is opposed to the shaft hole 322 , and the motor shaft 31 can be conveniently positioned on the shaft hole 322 by matching the limit plane 3111 on the motor shaft 31 with the limit hole wall on the shaft hole 322 .
  • each limiting unit 3314 is inserted into the corresponding first limiting slot 3121 through the outwardly enlarged opening 3121 a under the pretension of the elastic member 332 .
  • the limiting inclined wall 33142 abuts against the corresponding limiting groove guide wall 3121c.
  • the motor shaft 31 is moved into the shaft hole 322 by the external force, each limit inclined wall 33142 is lifted up by the thrust of the corresponding limit groove guide wall 3121c, and the elastic member 332 retracts, so that each limit unit 3314 is lifted from the shaft.
  • the corresponding first limiting groove 3121 is disengaged. Therefore, the elastic limiting mechanism 33 does not affect the insertion of the motor shaft 31 into the shaft hole 322 .
  • the first limit unit 3314 a , the second limit unit 3314 b and the third limit unit 3314 c are inserted into the corresponding positions under the pretension of the elastic member 332 inside the first limiting groove 3121 .
  • the user can easily insert the motor shaft 31 into the shaft hole 322 , and pass the elastic limit mechanism 33 fixed on the shaft sleeve 32 and the limit groove on the motor shaft 31 .
  • the 312 cooperates to form an interlock, which significantly improves the assembly efficiency.
  • a tool can be used to screw the first wrenching groove 33121 on the first limiting block 331a, so that the first limiting block 331a is rotated 180°.
  • the limiting straight wall 33141 of each limiting unit 3314 on the first limiting block 331a faces the motor 20 side.
  • the limiting inclined wall 33142 on each limiting unit 3314 is lifted up under the action of the vertical component force, the elastic member 332 is retracted, and the motor shaft 31 is smoothly removed from the shaft.
  • the hole 322 is pulled out, thereby releasing the interlock between the elastic limiting mechanism 33 and the motor shaft 31 .
  • the above disassembly process can be completed without disassembling the elastic limiting mechanism 33 from the mounting hole 3212 on the shaft sleeve 32, which greatly improves the disassembly efficiency.
  • the first limiting block 331a is configured to have magnetic permeability.
  • a magnetic tool such as a magnetic bar, etc.
  • a magnetic tool can be passed through the circular hole 111 provided on the blade 11 and the central through hole 3331 on the first fastener 333 , use a magnetic tool to form a magnetic attraction with the first limit block 331a to overcome the pretension applied by the elastic member 332 to the first limit block 331a, so that each limit unit 3314 is removed from the corresponding first limit slot 3121.
  • the elastic member 332 retracts, thereby releasing the interlock between the elastic limiting mechanism 33 and the motor shaft 31 .
  • the above dismounting process also does not require dismounting the elastic limiting mechanism 33 from the mounting hole 3212 of the shaft sleeve 32, which improves the dismounting efficiency.
  • the user can also use a tool to remove the first fastener 333 from the installation hole 3212, and take out the elastic member 332 and the first limit block 331a from the installation hole 3212, thereby The interlock between the elastic limit mechanism 33 and the motor shaft 31 is released.
  • the motor shaft mounting structure 30 includes a motor shaft 31 , a shaft sleeve 32 and an elastic limiting mechanism 33 . It should be pointed out that in the second embodiment of the motor shaft installation structure 30 , the shaft sleeve 32 , the elastic member 332 in the elastic limiting mechanism 33 and the first fixing member 333 are all the same as the first embodiment of the motor shaft installation structure 30 It has the same structure and will not be repeated here.
  • the limiting plane 3111 of the motor shaft 31 is provided with a plurality of limiting grooves 312 that are evenly spaced along the central axis C of the motor shaft 31 .
  • Each limiting slot 312 is configured as a second limiting slot 3122 .
  • the second limiting groove 3122 is configured as a blind hole with a circular cross-section.
  • the second limiting groove 3122 has an outwardly enlarged annular bell mouth 3122a, and a vertical hole wall 3122b.
  • the annular bell mouth 3122a can guide the limiting block 331 in the elastic limiting mechanism 33, so that the limiting block 331 can enter the second limiting groove 3122 more easily.
  • the vertical hole wall 3122b may abut against the limiting straight wall 33141 of the limiting block 331 .
  • the limiting block 331 is configured as a second limiting block 331b.
  • the second limiting block 331b has a large end 3311 and a small end 3313 opposite to each other.
  • a limiting unit 3314 is formed between the big end 3311 and the small end 3313 .
  • the limiting unit 3314 can be matched with any one of the second limiting grooves 3122 . It can be understood that the number of the limiting units 3314 can be set to 2, 3 or other suitable numbers, as long as each limiting unit 3314 can be matched with the corresponding second limiting slot 3122 . Further, the distance between two adjacent limiting units 3314 can be adjusted according to actual needs.
  • the limiting unit 3314 includes a limiting straight wall 33141 , a limiting flat wall 33143 and a limiting inclined wall 33142 .
  • the limiting straight wall 33141 is configured to abut against the hole wall 3122b of the second limiting groove 3122, and the limiting inclined wall 33142 can be matched with the annular bell mouth 3122a.
  • the elastic limiting mechanism 33 configured with the second limiting block 331 b may be fixed in the mounting hole 3212 on the shaft sleeve 32 first. Then, the motor shaft 31 is inserted into the shaft hole 322 on the shaft sleeve 32 . Use a tool to screw the first wrenching groove 33121 on the wrenching portion 3312 of the second limiting block 331b, so that the limiting inclined wall 33142 on the second limiting block 331b always faces the motor 20 side.
  • the limiting unit 3314 When the motor shaft 31 is inserted into the shaft hole 322, the limiting unit 3314 is inserted into the corresponding second limiting groove 3122 through the outwardly enlarged annular bell mouth 3122a under the action of the pretensioning force of the elastic member 332.
  • the motor shaft 31 When the motor shaft 31 is moved into the shaft hole 322 by an external force, the limiting inclined wall 33142 is lifted up by the thrust of the corresponding annular bell mouth 3122a, and the elastic member 332 retracts, so that the limiting unit 3314 moves from the corresponding first The two limiting grooves 3122 are disengaged.
  • the limiting unit 3314 is inserted into the corresponding second limiting groove 3122 under the pretension of the elastic member 332 . Since the limiting straight walls 33141 on the limiting unit 3314 and the corresponding vertical hole walls 3122b of the second limiting grooves 3122 abut against each other, when an outward pulling force is applied to the motor shaft 31, the motor shaft 31 The reaction force exerted by the limiting unit 3314 on the corresponding second limiting slot 3122 will cause the motor shaft 31 to be confined in the shaft sleeve 32 and not be pulled out, thereby realizing the connection between the elastic limiting mechanism 33 and the motor shaft 31 . interlock between.
  • a tool can be used to screw the first wrenching groove 33121 on the second limiting block 331b, so that the second limiting block 331b is rotated 180°.
  • the limiting straight wall 33141 of the limiting unit 3314 on the second limiting block 331b faces the motor 20 side.
  • the limiting inclined wall 33142 on the limiting unit 3314 is lifted up under the action of the vertical component force, the elastic member 332 retracts, and the motor shaft 31 is smoothly removed from the shaft hole 322. inside out, thereby releasing the interlock between the elastic limiting mechanism 33 and the motor shaft 31 .
  • the second limiting block 331b is configured to have magnetic permeability.
  • a magnetic tool can be used to form a magnetic attraction with the second limit block 331b, and the limit unit 3314 can be sucked out from the corresponding second limit slot 3122, and the elastic The member 332 retracts, thereby releasing the interlock between the elastic limiting mechanism 33 and the motor shaft 31 .
  • the user can also use a tool to remove the first fastener 333 from the installation hole 3212, and take out the elastic member 332 and the second limit block 331b from the installation hole 3212, thereby The interlock between the elastic limit mechanism 33 and the motor shaft 31 is released.
  • the motor shaft mounting structure 30 includes a motor shaft 31 , a shaft sleeve 32 and an elastic limiting mechanism 33 . It should be noted that the motor shaft 31 in the third embodiment of the motor shaft mounting structure 30 has the same structure as the first embodiment of the motor shaft mounting structure 30 , and details are not described herein again.
  • a limiting sink groove 3211 is formed on the peripheral wall 321 of the shaft sleeve 32 .
  • the limiting sink 3211 has a substantially rectangular shape.
  • the limiting recess 3211 can also be a square, a trapezoid, or other suitable shapes.
  • the limiting recess 3211 is configured to match with the fixing portion 3341 of the limiting elastic piece 334 , so that the fixing portion 3341 can be nested on the limiting recess 3211 .
  • a mounting hole 3212 is formed on the limiting recess 3211 .
  • the mounting hole 3212 is configured to receive the second fastener 335 of the elastic limiting mechanism 33 .
  • the elastic limiting mechanism 33 is configured to include a limiting elastic piece 334 and a second fastener 335 .
  • the limiting elastic piece 334 includes a fixing portion 3341 and an elastic limiting portion 3342 extending outward from one end of the fixing portion 3341 .
  • the limiting elastic piece 334 can be made of stainless steel, manganese steel, or other suitable materials, so as to improve the service life of the limiting elastic piece 334 .
  • the fixing portion 3341 has a substantially rectangular shape.
  • the fixing portion 3341 can also be a square, trapezoid, or other suitable shapes, as long as it can be matched with the limiting recess 3211 so that the fixing portion 3341 can be nested on the limiting recess 3211.
  • a fixing hole 33411 is formed in the fixing portion 3341 .
  • the fixing hole 33411 has a substantially circular shape.
  • the fixing hole 33411 is opposite to the mounting hole 3212 on the limiting recess 3211 .
  • the fixing hole 33411 has the same diameter as the mounting hole 3212 , so that the second fastener 335 can pass through the fixing hole 33411 and be fixed in the mounting hole 3212 more conveniently.
  • the elastic limiting portion 3342 is configured to extend obliquely downward from the left end of the fixing portion 3341 along a predetermined angle ⁇ with the horizontal direction.
  • the predetermined angle ⁇ is configured to be equal to the predetermined angle ⁇ .
  • the range of the predetermined included angle ⁇ is 20°-70°.
  • the predetermined included angle ⁇ is 45°, so that the limiting elastic piece 334 has a simple structure and is easy to manufacture.
  • the elastic limiting portion 3342 has an oblique limiting bottom wall 33422 and a vertical limiting end wall 33421 .
  • the oblique limiting bottom wall 33422 can be matched with the limiting groove guide wall 3121c of the first limiting groove 3121 , and the vertical limiting end wall 33421 can abut against the limiting groove straight wall 3121b of the first limiting groove 3121 Depend on.
  • the second fastener 335 includes a nut 3351 and a screw 3352 formed at the bottom of the nut 3351 .
  • the second fastener 335 is made of a suitable alloy material, such as carbon steel, alloy steel, etc., so as to improve the service life of the second fastener 335 .
  • the nut 3351 has a substantially circular cross-section. Alternatively, the nut 3351 can also be configured to have a square, regular hexagonal, or other suitable shaped cross-section.
  • a third wrenching groove 33511 is formed in the upper portion of the nut 3351 .
  • the third wrenching groove 33511 is configured as a cross groove, so that the second fastener 335 can be disassembled and assembled by a tool.
  • the third wrenching groove 33511 can also be provided as a slot, or other suitable forms. Threads are formed on the peripheral wall of the screw rod 3352, and matching threads are formed on the inner wall of the mounting hole 3212, so that the second fastener 335 can be detachably fixed on the mounting hole 3212 and form a firm threaded connection .
  • a snap connection can also be formed between the second fastener 335 and the installation hole 3212, or other suitable connection methods.
  • the elastic limiting mechanism 33 configured with the limiting elastic sheet 334 can be fixed in the mounting hole 3212 on the shaft sleeve 32 first.
  • the fixing portion 3341 of the limiting elastic piece 334 is nested in the limiting recess 3211 of the shaft sleeve 32 .
  • the elastic limiting portion 3342 of the limiting elastic piece 334 extends toward the side away from the motor 20 .
  • the end of the elastic limiting portion 3342 of the limiting elastic piece 334 is inserted into the first limiting groove 3121 through the outwardly enlarged opening 3121a.
  • the motor shaft 31 is moved into the shaft hole 322 by an external force, the oblique limiting bottom wall 33422 is lifted up by the thrust of the limiting groove guide wall 3121c, and the limiting elastic piece 334 is deformed, so that the elastic limiting portion 3342 is removed from the phase.
  • the corresponding first limiting groove 3121 is disengaged.
  • the end of the elastic limiting portion 3342 is inserted into the corresponding first limiting groove 3121 .
  • the vertical limiting end wall 33421 abuts against the limiting groove straight wall 3121b of the corresponding first limiting groove 3121 .
  • the motor shaft 31 will be subjected to the reaction force exerted by the elastic limiting portion 3342 on the corresponding first limiting groove 3121 , so that the motor shaft 31 is confined within the shaft sleeve 32 without being pulled out, thereby realizing the interlocking between the elastic limiting mechanism 33 and the motor shaft 31 .
  • the second fastener 335 can be disassembled from the mounting hole 3212 by a tool, and the limiting elastic piece 334 can be taken out from the mounting hole 3212, thereby releasing the elasticity Interlock between the limit mechanism 33 and the motor shaft 31 .
  • motor shaft mounting structure 30 of the present invention is not limited to be applied to cross-flow fans and air conditioners, and can also be applied to other suitable devices with motors.

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Abstract

一种电机轴安装结构（30）、贯流风机（1）及空调，所述电机轴安装结构（30）包括：电机轴（31），在所述电机轴（31）的周向壁（311）上形成有沿所述电机轴（31）的轴线彼此间隔的多个限位槽（312）；轴套（32），所述轴套（32）配置成可接纳所述电机轴（31），并且在所述轴套（32）的周壁（321）上形成有安装孔（3212）；和弹性限位机构（33），所述弹性限位机构（33）可拆卸地固定在所述安装孔（3212）中，并配置成可与所述多个限位槽（312）的至少一个配合形成互锁。通过在轴套（32）上设置弹性限位机构（33），并将其配置成可与电机轴（31）上至少一个限位槽（312）配合形成互锁，使得电机轴安装结构（30）的装配效率显著提升，装配合格率增加。另外，电机轴安装结构（30）的更换成本较低，适配性好。

Description

电机轴安装结构、贯流风机及空调 技术领域
本发明涉及空调技术领域，具体地涉及电机轴安装结构、贯流风机及空调。
背景技术
布置在受调节房间内的现有空调或其室内机单元(以下都简称为“空调”)通常都设有进风口和出风口，以及布置在空调内部的换热器和风扇。当空调运行时，换热器可充当蒸发器或冷凝器，以实现制冷或制热的功能。风扇经常采用贯流风扇的形式，通过进风口将受调节房间内的空气(其通常被称为“回风”)或室外的新鲜空气吸入到空调内。空气在空调内从换热器上流过而被冷却或加热。被冷却或加热的空气再通过出风口被送到房间内。
现有技术中的贯流风扇一般为长圆筒状，扇叶围绕贯流风扇的中心轴线彼此间隔地布置在同一个圆周上，然后在轴向上通过相对的两个固定板固定在一起。贯流风扇横向设置于空调内，一端设置有沿贯流风扇的轴线方向向外延伸的固定轴，固定轴固定在空调的骨架上；另一端设置有同样沿贯流风扇的轴线方向延伸的轴套，轴套用于接纳电机的电机轴。按照轴套设置在贯流风扇上的不同位置，贯流风扇可分为外置式(即轴套沿贯流风扇的轴线方向向外延伸)和内置式(即轴套沿贯流风扇的轴线方向向内延伸)。为了增强电机轴与轴套之间的锁紧程度，防止电机在高速旋转时电机轴失去位置约束而产生偏移，通常会在轴套上设置螺孔，并将螺钉穿过螺孔使其与电机轴的表面接触，利用螺钉与电机轴之间产生的摩擦力实现锁紧电机轴的目的。
然而，传统的螺钉锁紧的方式会带来如下问题：1、锁紧时需要人工核定位置，操作不便，影响装配效率；2、人工紧固螺钉，紧固程度受装配人员的主观因素和熟练程度影响，存在紧固程度不一致的可能性；3、轴套与电机轴之间存在间隙(直径设计间隙约为0.2mm)，为了使电机轴和轴套之间的锁紧有效，通常会使用较大的力矩，而将电机轴推向一侧，使得电机轴旋转时偏离自身轴线，产生异音。为了解决上述问题，现有技术中已经发展出一种便于装配的电机轴固定结构。例如，中国实用新型专利CN209458156U公开了一种风叶电机轴固定结构。该风叶电机轴固定结构包括电机轴、风叶轴筒、套筒和弹性部件。当电机轴插入套筒和弹性部件内时，弹性部件的内表面与电机轴贴合设置，与弹性部件相接的套筒的内表面能够对弹性部件施以与电机轴的轴线倾斜并且朝向风叶轴筒方向的锁紧力，使得电机轴与套筒之间形成轴向锁定。但是，该风叶电机轴固定结构中的弹性部件设置在套筒内，一旦弹性部件损坏只能将整个贯流风扇更换掉，导致更换 成本高。另外，市场上现有的贯流风扇大多不具有该实用新型专利所述的弹性部件和套筒的配合结构，因此该风叶电机轴固定结构的适配性较差。
相应地，本领域需要一种新的技术方案来解决上述问题。
发明内容
为了解决现有技术中的电机轴安装结构装配效率低、更换成本高和适配性差的上述问题，本发明提供一种电机轴安装结构，所述电机轴安装结构包括：电机轴，在所述电机轴的周向壁上形成有沿所述电机轴的轴线彼此间隔的多个限位槽；轴套，所述轴套配置成可接纳所述电机轴，并且在所述轴套的周壁上形成有安装孔；和弹性限位机构，所述弹性限位机构可拆卸地固定在所述安装孔中，并配置成可与所述多个限位槽的至少一个配合形成互锁。
本领域技术人员能够理解的是，在本发明的电机轴安装结构中，设置有电机轴、轴套和弹性限位机构。在电机轴的周向壁上设有沿电机轴的轴线彼此间隔的多个限位槽。轴套配置成可接纳电机轴，使得电机轴可以方便地插入到轴套内。在轴套的周壁上设有安装孔，弹性限位机构可拆卸地固定在安装孔中。弹性限位机构配置成可与多个限位槽的至少一个配合形成互锁。可以理解的是，当电机轴插入轴套内时，固定在轴套上的弹性限位机构可以与设置在电机轴的周向壁上的至少一个限位槽配合形成互锁，阻止电机轴相对于轴套在轴向和周向上的活动，并且大大提升了电机轴的装配效率。本发明的电机轴安装结构中电机轴与轴套之间的锁紧程度取决于弹性限位机构的预加张力，预加张力的大小可以通过初始的工艺设计确定，避免了因人工操作带来的锁紧程度的差异，提高了电机轴装配的合格率。相较于传统的螺钉锁紧，该电机轴安装结构采用弹性限位机构对电机轴进行锁紧，能够有效防止锁紧的力矩过大而使电机轴偏向一侧，避免电机轴在旋转过程偏离自身轴线，进一步提高了电机轴的装配合格率。另外，该电机轴安装结构的弹性限位机构配置成可拆卸地固定在轴套的安装孔中，而不是固定设置在轴套的内部，因此当弹性限位机构损坏时，仅需更换弹性限位机构，无需将整个旋转部件(例如贯流扇叶等)更换掉，降低了更换成本。进一步地，市场上现有的贯流风机(无论是外置式还是内置式)在轴套上一般都设有用于接纳螺钉的螺孔，通过选择可与螺孔相匹配的弹性限位机构，本发明的电机轴安装结构能够应用在现有的大多数贯流风机中，适配性较好。
在上述电机轴安装结构的优选技术方案中，在所述周向壁上形成有沿所述轴线延伸的限位平面，所述限位平面延伸至所述电机轴的自由端，并且所述多个限位槽形成在所述限位平面上。在电机轴的周向壁上设置限位平面，能够有效防止电机轴在旋转过程中与轴套产生周向滑动而影响传动效率。进一步地，限位平面的设置也能够限定电机轴与轴套之间的相对位置，有利于固定在轴套上的弹性限位机构与设置在限位平面上的限位槽相互配合，以提高电机轴的装配效率。
在上述电机轴安装结构的优选技术方案中，所述弹性限位机构包括限位块、弹性件、和第一紧固件，其中，所述限位块具有相对的大端和小端，所述小端可插入到所述限位槽中，并且在所述大端和小端之间形成有相对的限位直壁和限位斜壁，所述限位斜壁从所述小端朝所述大端倾斜延伸远离所述限位直壁；所述弹性件具有抵靠所述大端的第一端和抵靠所述第一紧固件的第二端；并且所述第一紧固件与所述安装孔相匹配以通过所述弹性件施加的预加张力将所述限位块约束在至少一个所述限位槽中，并且所述限位直壁比所述限位斜壁更靠近所述电机轴的自由端。第一紧固件配置成与安装孔相匹配，使得弹性限位机构与轴套之间形成可拆卸地固定连接，便于对该弹性限位机构更换和维修。弹性件一端抵靠在第一紧固件上，另一端抵靠在限位块的大端上，通过选择具有合适弹性系数的弹性件可以对限位块施加一定的预加张力，便于将限位块约束在至少一个限位槽中。限位块设置成具有相对的大端和小端，在大端和小端之间设置有相对的限位直壁和限位斜壁，并且当限位块约束在限位槽中时，限位直壁比限位斜壁更靠近电机轴的自由端。可以理解的是，当电机轴插入轴套内时，限位斜壁与电机轴接触并受到来自电机轴的推力，使得限位块被抬升，并且与限位块相抵靠的弹性件回缩，因此电机轴可以方便地插入到轴套中。当限位块被约束在限位槽中时，如果在电机轴上施加向外的抽力，限位直壁就会抵靠限位槽以对电机轴施加与抽力相反的反作用力，使得电机轴不能被抽出而被约束在轴套内。
在上述电机轴安装结构的优选技术方案中，在所述限位块上设有沿着电机轴的轴线相互平行且间隔开的多个限位单元，每个所述限位单元包括相对的所述限位直壁和所述限位斜壁。通过设置多个限位单元，可以增加限位块和限位槽之间的接触面积，使得限位块与限位槽之间的约束更加有效。
在上述电机轴安装结构的优选技术方案中，在所述安装孔的底部形成有环形挡片，所述环形挡片配置成可与所述大端相抵靠。通过上述的配置，使得限位块可被保持在轴套的安装孔内，防止电机轴在进入或者抽出轴套的过程中将限位块带离安装孔。
在上述电机轴安装结构的优选技术方案中，所述限位直壁和所述限位斜壁之间形成预定夹角，所述预定夹角的范围为20°-70°。通过设置不同夹角的限位块，可以丰富产品类型，满足用户个性化需求。
在上述电机轴安装结构的优选技术方案中，所述预定夹角为45°。将限位直壁和限位斜壁之间的预定夹角设置为45°，不仅可以使限位块的结构简单，易于制造，而且可以使限位斜壁受力时水平方向的分力和竖直方向的分力分布更加均匀。
在上述电机轴安装结构的优选技术方案中，每个所述限位槽具有扩大的开口并且包括相对的限位槽直壁和限位槽引导壁，所述限位槽直壁可与所述限位直壁相互抵靠，并且所述限位槽引导壁可与所述限位斜壁相配。在每个限位槽上设置扩大的开口，能够使限位块更方便地导入到限位槽内。在限位槽上设置相对的限位槽直壁和限位槽引导壁，并且限位槽直壁可与限 位直壁相互抵靠，限位槽引导壁可与限位斜壁相配，使得限位槽能够与限位块相匹配。
在上述电机轴安装结构的优选技术方案中，每个所述限位槽配置成具有圆形截面的盲孔，所述盲孔具有向外扩大的环形喇叭口和竖直的孔壁，所述孔壁可与所述限位直壁相互抵靠。通过将限位槽配置成具有圆形截面的盲孔，可以简化制造工艺，便于制造。另外，在盲孔上设置向外扩大的环形喇叭口，能够使限位块更方便地导入到限位槽内。进一步地，盲孔中设置有可与限位直壁相互抵靠的竖直的孔壁，可以使限位槽与限位块相互配合。
在上述电机轴安装结构的优选技术方案中，所述限位块包括形成在所述大端上的扳拧部，并且所述第一紧固件设有中心通孔，以便可通过所述中心通孔和所述扳拧部转动所述限位块，来解除所述限位块与所述限位槽之间的互锁。当需要将电机轴从轴套上拆卸下来时，可以利用工具(例如手动螺丝刀、电动螺丝刀等)穿过设置在第一紧固件上的中心通孔，并旋转限位块大端上的扳拧部，使限位块旋转180°(此时，限位块上的限位斜壁比限位直壁更靠近电机轴的自由端)。电机轴在向外的抽力作用下，通过与限位块相抵靠的弹性件的回缩，与电机轴相接触的限位斜壁可被抬起，进而可解除限位块和限位槽之间的互锁，使得电机轴可以方便地从轴套内抽出，有效提升了电机轴的拆卸效率。
在上述电机轴安装结构的优选技术方案中，所述限位块具有导磁性，以便通过磁性工具解除所述限位块与所述限位槽之间的互锁。通过将限位块配置成具有导磁性，并且选择合适的磁性工具，以便磁性工具与限位块之间产生足够的磁吸力，从而将限位块朝压缩弹性件的方向拉。在磁吸力的作用下，弹性件被压缩，使得限位块能够向限位槽外移动并脱离限位槽，因此可解除限位块和限位槽之间的互锁，使得电机轴可以方便地从轴套内抽出，有效提升了电机轴的拆卸效率。
在上述电机轴安装结构的优选技术方案中，在所述轴套的周壁上形成有限位沉槽，所述安装孔布置在所述限位沉槽内，并且所述弹性限位机构包括限位弹片和第二紧固件，其中，所述第二紧固件与所述安装孔相配；所述限位弹片具有固定部和从所述固定部向外延伸的弹性限位部，所述固定部配置成可嵌套在所述限位沉槽内，并且在所述固定部上形成有与所述安装孔相对并可接纳所述第二紧固件的末端的固定孔，所述弹性限位部配置成可插入至少一个所述限位槽内以形成互锁。在轴套的周壁上设有限位沉槽，并将限位弹片的固定部嵌套在限位沉槽内，能够使限位弹片更方便地定位在轴套上，便于安装；而且能够将固定部限定在限位沉槽内，防止限位弹片与轴套之间产生位移。另外，在固定部上设有与安装孔相对并可接纳第二紧固件的末端的固定孔，使得限位弹片能够通过第二紧固件与轴套形成可拆卸的固定连接。进一步地，当电机轴插入轴套内时，弹性限位部可以插入至少一个限位槽并配合形成互锁，使得电机轴的装配效率显著提升。
本发明还提供一种贯流风机，所述贯流风机包括：贯流风机本体；电机，所述电机具有根据上面所述的电机轴安装结构，其中，所述轴套固定在所述贯流风机本体的一个纵向端部中。通过配置上面所述任意一项的电机轴安装结构，本发明的贯流风机的装配效率显著提升。另外，由于弹性限位机构可拆卸地固定在轴套上，因此当弹性限位机构损坏需要更换时，可以方便地将弹性限位机构拆卸下来，而不需要更换整个贯流风机，大大降低了更换成本。
本发明还提供一种空调，所述空调包括根据上面所述的贯流风机。通过配置上述贯流风机，本发明的空调的装配效率显著提升，并且本发明的更换成本明显降低。
附图说明
下面参照附图来描述本发明的优选实施方式，附图中：
图1是本发明贯流风机的第一种实施例的爆炸示意图；
图2是本发明贯流风机的第一种实施例的电机的实施例的结构示意图；
图3是图2所示的本发明贯流风机的第一种实施例的电机的实施例的A部局部放大图；
图4是本发明贯流风机的第一种实施例的贯流风机主体的实施例的右视图；
图5是本发明贯流风机的第一种实施例的贯流风机主体的实施例沿着图4所示的A-A剖面线获得的剖面示意图；
图6是本发明贯流风机的第一种实施例的限位块的实施例的结构示意图；
图7是本发明贯流风机的第一种实施例的第一紧固件的实施例的结构示意图；
图8是本发明贯流风机的第二种实施例的爆炸示意图；
图9是本发明贯流风机的第二种实施例的电机的实施例的结构示意图；
图10是图9所示的本发明贯流风机的第二种实施例的电机的实施例的B部局部放大图；
图11是本发明贯流风机的第二种实施例的限位块的实施例的结构示意图；
图12是本发明贯流风机的第三种实施例的爆炸示意图；
图13是本发明贯流风机的第三种实施例的贯流风机主体的实施例的右视图；
图14是本发明贯流风机的第三种实施例的贯流风机主体的实施例沿着图13所示的B-B剖面线获得的剖面示意图；
图15是本发明贯流风机的第三种实施例的弹性限位块的实施例的结构示意图。
附图标记列表：
1、贯流风机；10、贯流风机本体；11、叶片；111、圆孔；111a、第一孔部；111b、第二孔部；12、纵向端壁；20、电机；30、电机轴安装结构；31、电机轴；311、周向壁；3111、限位平面；312、限位槽；3121、第一限位槽；3121a、开口；3121b、限位槽直壁；3121c、限位槽引导壁；3121d、限位槽底壁；3122、第二限位槽；3122a、环形喇叭口；3122b、孔壁；313、导向部；314、自由端；315、固定端；32、轴套；321、周壁、3211、限位沉槽；3212、安装孔；32121、环形挡片；322、轴孔；33、弹性限位机构；331、限位块；331a、第一限位块；331b、第二限位块；3311、大端；3312、扳拧部；33121、第一扳拧槽；3313、小端；3314、限位单元；3314a、第一限位单元；3314b、第二限位单元；3314c、第三限位单元；33141、限位直壁；33142、限位斜壁；33143、限位平壁；332、弹性件；3321、第一端；3322、第二端；333、第一紧固件；3331、中心通孔；3332、第二扳拧槽；3333、顶端；3333a、环形壁；3334、外侧壁；3335、底端；334、限位弹片；3341、固定部；33411、固定孔；3342、弹性限位部；33421、竖直限位端壁；33422、斜向限位底壁；335、第二紧固件；3351、螺帽；33511、第三扳拧槽；3352、螺杆。
具体实施方式
下面参照附图来描述本发明的优选实施方式。本领域技术人员应当理解的是，这些实施方式仅仅用于解释本发明的技术原理，并非旨在限制本发明的保护范围。
需要说明的是，在本发明的描述中，术语“上”、“下”、“左”、“右”、“内”、“外”等指示的方向或位置关系的术语是基于附图所示的方向或位置关系，这仅仅是为了便于描述，而不是指示或暗示所述装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性。
此外，还需要说明的是，在本发明的描述中，除非另有明确的规定和限定，术语“安装”、“设置”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是直接相连，也可以通过中间媒介间接相连，还可以是两个元件内部的连通。对于本领域技术人员而言，可根据具体情况理解上述术语在本发明中的具体含义。
为了解决现有技术中的电机轴安装结构装配效率低、更换成本高和适配性差的技术问题，本发明提供一种电机轴安装结构30，该电机轴安装结构30包括：电机轴31，在电机轴31的周向壁311上形成有沿电机轴31的轴线彼此间隔的多个限位槽312；轴套32，轴套32配置成可接纳电机轴31，并且在轴套32的周壁321上形成有安装孔3212；和弹性限位机构33，弹性限位机构33可拆卸地固定在安装孔3212中，并配置成可与多个限位槽312的至少一个配合形成互锁。通过在轴套32上设置弹性限位机构33，并且将弹性限位 机构33配置成可与电机轴31上多个限位槽312的至少一个配合形成互锁，本发明电机轴安装结构30中电机轴31能够方便地装配到轴套32内，装配效率显著提高。另外，该电机轴安装结构30中的弹性限位机构33可拆卸地固定在轴套32上的安装孔3212中，而不是固定设置在轴套32内部，使得当弹性限位机构33损坏时，可以方便地将弹性限位机构33拆卸下来，而不需要将整个旋转部件更换掉，因此降低了更换成本。进一步地，本发明的电机轴安装结构30能够应用在现有的大多数贯流风机中，适配性较好。
图1是本发明贯流风机的第一种实施例的爆炸示意图；图2是本发明贯流风机的第一种实施例的电机的实施例的结构示意图；图3是图2所示的本发明贯流风机的第一种实施例的电机的实施例的A部局部放大图；图4是本发明贯流风机的第一种实施例的贯流风机主体的实施例的右视图；图5是本发明贯流风机的第一种实施例的贯流风机主体的实施例沿着图4所示的A-A剖面线获得的剖面示意图；图6是本发明贯流风机的第一种实施例的限位块的实施例的结构示意图；图7是本发明贯流风机的第一种实施例的第一紧固件的实施例的结构示意图；图8是本发明贯流风机的第二种实施例的爆炸示意图；图9是本发明贯流风机的第二种实施例的电机的实施例的结构示意图；图10是图9所示的本发明贯流风机的第二种实施例的电机的实施例的B部局部放大图；图11是本发明贯流风机的第二种实施例的限位块的实施例的结构示意图；图12是本发明贯流风机的第三种实施例的爆炸示意图；图13是本发明贯流风机的第三种实施例的贯流风机主体的实施例的右视图；图14是本发明贯流风机的第三种实施例的贯流风机主体的实施例沿着图13所示的B-B剖面线获得的剖面示意图；图15是本发明贯流风机的第三种实施例的弹性限位块的实施例的结构示意图。
在一种或多种实施例中，本发明空调(图中未示出)为置于室内的挂壁式室内机。替代地，该空调也可为一体式空调或者其它合适形式的空调。该空调包括但不限于骨架、换热器、贯流风机1、导风板等部件。优选地，骨架采用合适的树脂材料通过注塑工艺一体成型，例如ABS塑料、ABS/PP塑料等。在骨架的顶部形成有空调的进风口。在骨架的前侧(面对用户的一侧)的下部形成有出风口。在出风口中布置有用于调节出风方向的导风板。骨架上设置有可容纳贯流风机1的容纳空间。换热器安装在贯流风机本体10的上部。当空调运行时，来自受调节房间的空气或来自室外环境的新鲜空气从进风口被吸入空调内，并且流过空调内的换热器以被冷却或加热。冷却或加热后的空气从出风口被送入受调节空间。
如图1所示，在一种或多种实施例中，贯流风机1为包括贯流风机本体10和可驱动贯流风机本体10转动的电机20。贯流风机本体10横向设置在空调的骨架内，即沿空调的长度方向延伸。优选地，贯流风机本体10采用合适的树脂材料通过注塑工艺一体成型，例如玻纤ABS塑料、玻纤AS塑料等。替代地，贯流风机本体10也可采用其它合适的工艺制成。贯流风机本体10大致为长圆筒状。贯流风机本体10上具有多个叶片11。贯流风机本体10具有两个彼此相对的纵向端壁(图中仅示出一侧纵向端壁12)。每个叶片11布置成 大致沿贯流风机本体10的中心轴线C延伸，并且两端分别固定在两个纵向端壁上。叶片11可以是直齿型、斜齿型，或者其它合适的形状。在贯流风机本体10的一个纵向端壁上设有固定轴(图中未示出)。固定轴配置成从纵向端壁沿贯流风机本体10的中心轴线C向外延伸。固定轴可转动地固定在骨架的固定轴孔(图中未示出)内。在贯流风机本体10的另一个纵向端壁12上设有轴套32。如图1所示，在一种或多种实施例中，轴套32配置成从纵向端壁12沿贯流风机本体10的中心轴线C向内延伸，即贯流风机1为内置式贯流风机。在相同的纵向长度下，内置式贯流风机具有更长的叶片长度，因此出风量更大。在与轴套32上的安装孔3212相对的两个叶片11上设有圆孔111。圆孔111包括第一孔部111a和第二孔部111b。第一孔部111a和第二孔部111b分别设置在两个叶片11上，并围成具有大致圆形的圆孔111，以便通过圆孔111拆装紧固件。可以理解的是，传统的内置式贯流风机一般需要将与轴套32上的安装孔3212相对的叶片去掉，以便从空缺的叶片处拆装紧固件，导致贯流风扇在运转过程中，空缺的叶片处存在明显的周期性异常音。因此，相较于传统的内置式贯流风机，本发明的贯流风机1的贯流风机本体10保留了与轴套32上的安装孔3212相对的叶片11，因此减小了因叶片11缺失造成的异常音，进而降低了空调的整体噪音水平。替代地，轴套32也可配置成从纵向端壁12沿贯流风机本体10的中心轴线C向外延伸，即贯流风机1配置成为外置式贯流风机。
如图1所示，在一种或多种实施例中，电机20为步进电机。替代地，电机20也可为无刷电机、伺服电机或其它合适形式的电机。电机20安装在空调骨架的电机容纳腔(图中未示出)内，并与空调的控制系统(图中未示出)形成电连接。优选地，电连接的方式为有线连接，以降低制造成本。替代地，电连接的方式也可为无线连接。电机20具有电机轴安装结构30。
下面，结合图1-图15详细介绍本发明的电机轴安装结构30的几种实施例。需要指出的是，本发明的电机轴安装结构30包括但不限于以下几种实施例。
电机轴安装结构30的第一种实施例
如图1所示，电机轴安装结构30包括电机轴31、轴套32和弹性限位机构33。电机轴31形成在电机20上，并沿其中心轴线C向外延伸(如图1所示，此时电机轴31的中心轴线与贯流风机本体10的中心轴线重合)。电机轴31可采用碳素钢等合金材料制作，例如35号钢、45号钢等，或者其它合适的材质。如图2所示，在一种或多种实施例中，在电机轴31的周向壁311上设有限位平面3111。限位平面3111配置成从靠近电机轴31的固定端315的位置沿平行于电机轴31的中心轴线C的方向向自由端314延伸。限位平面3111能够与轴套32上的轴孔322相配合，防止电机轴31在旋转过程中与轴套32产生周向滑动而影响传动效率。限位平面3111的数量可以设置成多个，例如2个、3个或者其它合适的数量，以进一步增强电机轴31与轴孔322之间的有效连接，只要能够与轴孔322相匹配即可。优选地，在电机轴31的自由端314上形成有 导向部313。导向部313配置成朝向自由端314的方向横截面逐渐减小的环形壁，使得电机轴31能够更方便地插入到轴孔322内，提升装配效率。
如图2所示，在一种或多种实施例中，在限位平面3111上设有沿电机轴31的中心轴线C均匀间隔布置的多个限位槽312。限位槽312的数量可以根据实际需要调整。相邻两个限位槽312之间的间距也可根据实际需要调整。如图3所示，在一种或多种实施例中，每个限位槽312配置成为第一限位槽3121。第一限位槽3121具有与弹性限位机构33中的第一限位块331a相匹配的结构，使得每个第一限位槽3121可与第一限位块331a配合形成互锁。第一限位槽3121具有扩大的开口3121a，并且包括限位槽直壁3121b、限位槽引导壁3121c和限位槽底壁3121d。限位槽底壁3121d为大致平壁并且其两端分别与限位槽直壁3121b和限位槽引导壁3121c相连。限位槽底壁3121d的设置能够增大第一限位槽3121的横向截面，使得相应的开口3121a更大，便于电机轴31的装配。替代地，第一限位槽3121中也可不设置限位槽底壁3121d，即限位槽直壁3121b直接与限位槽引导壁3121c相接。限位槽直壁3121b配置成比限位槽引导壁3121c更靠近电机轴31的自由端314，使得电机轴31能够与弹性机构33相配合形成互锁。限位槽直壁3121b与限位槽引导壁3121c形成预定夹角α(即当电机轴31沿水平方向放置时，限位槽引导壁3121c与竖直面所夹持的角度)。预定夹角α的范围为20°-70°。优选地，预定夹角α为45°，使得第一限位槽3121的结构简单，便于制造。
如图1所示，在一种或多种实施例中，轴套32布置在贯流风机本体10的纵向端壁12的内侧，即位于贯流风机本体10的内部。轴套32可由碳素钢、铝合金，或者其它合适的材质制成。轴套32可采用嵌件注塑工艺与贯流风机本体10一体成型，或者采用其它合适的工艺。轴套32具有轴孔322。轴孔322配置成可接纳电机轴31。轴孔322与电机轴31之间具有预设的安装间距。安装间距为0.2mm，或者比0.2mm大或小的其它合适的距离。轴孔322上形成有与限位平面3111相匹配的限位孔壁(图中未示出)。限位孔壁和限位平面3111相配合，使得电机轴31被限定在轴孔322内而不会产生周向滑动。限位孔壁的个数可以设置成多个，例如2个、3个或者其它合适的数量，只要能够与限位平面3111相匹配即可。如图4和图5所示，在一种或多种实施例中，在轴套32的周壁321上设有安装孔3212。安装孔3212配置成可接纳弹性限位机构33中的紧固件，使得弹性限位机构33可拆卸地固定在轴套32上。安装孔3212具有大致圆形的截面。在一种或多种实施例中，安装孔3212的底壁形成有从安装孔3212的边缘向安装孔3212的中心延伸的环形挡片32121。环形挡片32121可将弹性限位机构33限制在安装孔3212内，防止电机轴31进入或者抽出轴套32过程中将弹性限位机构33带走。
如图1所示，在一种或多种实施例中，弹性限位机构33包括限位块331、弹性件332、和第一紧固件333。如图6所示，在一种或多种实施例中，限位块331配置成为第一限位块331a。第一限位块331a具有相对的大端3311和小端3313。在大端3311上形成有扳拧部3312。在扳拧部3312上设有第一扳拧槽33121(如图1所示)。第一扳拧槽33121设置成十字槽。通过选择合适 的工具(例如十字螺丝刀等)可以插入第一扳拧槽33121中，用于调整第一限位块331a的角度。替代地，第一扳拧槽33121也可设置成一字槽，或者其它合适的形式。如图6所示，在大端3311和小端3313之间形成有彼此平行且间隔开的3个限位单元3314，依次为第一限位单元3314a、第二限位单元3314b、和第三限位单元3314c。每个限位单元3314均可与对应的第一限位槽3121相配合。可以理解的是，限位单元3314的数量可以设置成比3个多或少的其它合适的数量。相邻两个限位单元3314的间距可以根据实际需要调整。每个限位单元3314都包括限位直壁33141、限位平壁33143和限位斜壁33142。限位平壁33143的两端分别与限位直壁33141和限位斜壁33142相接。限位平壁33143的设置能够增加每个限位单元3314的横向截面，以便与限位槽底壁3121d配合。替代地，限位单元3314中也可不设置限位平壁33143，即限位直壁33141直接与限位斜壁33142相接。限位直壁33141与限位斜壁33142形成预定夹角β(即基于图6所示的方位，限位斜壁33142与竖直面所形成的角度)。在一种或多种实施例中，预定夹角β配置成与预定夹角α相等。预定夹角β的范围为20°-70°。优选地，预定夹角β为45°，使得第一限位块331a的结构简单，便于制造。限位直壁33141配置成可与限位槽直壁3121b相互抵靠，并且限位斜壁33142可与限位槽引导壁3121c相配。
如图1所示，在一种或多种实施例，弹性件332包括与限位块331(即第一限位块331a)的大端3311相抵靠的第一端3321和与第一紧固件333相抵靠的第二端3322。弹性件332设置为弹簧，并且具有合适的劲度系数k。合适的劲度系数k可通过实验或者经验获得。当弹性限位机构33固定在安装孔3212内时，弹性件332能够对第一限位块331a施加预加张力，以便于第一限位块331a上的每个限位单元3314可方便地插入到对应的第一限位槽3121中。弹性件332可采用合适的合金材料制成，例如碳素钢、合金钢等，以提高弹性件332的使用寿命。
如图7所示，在一种或多种实施例中，第一紧固件333大致为内部中空的圆柱体，因此具有中心通孔3331，并且具有顶端3333和相对的底端3335。在顶端3333上形成有径向向内延伸的环形璧3333a。该环形壁3333a的内径小于中心通孔3331的直径。弹性件332和第一限位块331a可通过底端3335上的开口进入到中心通孔3331中，弹性件332的第二端3322可抵靠在环形壁3333a上，并被限制在第一紧固件333内。在顶端3333上形成有第二扳拧槽3332。在一种或多种实施例中，第二扳拧槽3332设置成一字槽，以便通过工具拆装第一紧固件333。替代地，第二扳拧槽3332也可设置成十字槽，或者其它合适的形式。第一紧固件333配置成与轴套32上的安装孔3212相匹配，使得弹性限位机构33可固定在轴套32上。优选地，在第一紧固件333的外侧壁3334上设有螺纹，并且在安装孔3212的内壁上设有与之相匹配的螺纹，使得第一紧固件333可拆卸地固定在安装孔3212上，并形成牢固的螺纹连接。替代地，第一紧固件333与安装孔3212之间也可形成卡扣连接，或者其它合适的连接方式。第一紧固件333可采用合适的合金材料制成，例如碳素钢、合金钢等，以提高第一紧固件333的使用寿命。
当第一种实施例的电机轴安装结构30在装配时，可以先将配置有第一限位块331a的弹性限位机构33固定在轴套32上的安装孔3212中。将弹性件332的第一端3321抵靠在第一限位块331a的扳拧部3312上，并将弹性件332和第一限位块331a放置在第一紧固件333内，使得弹性件332的第二端3322抵靠在第一紧固件333的顶端3333的内侧。通过设置在叶片11上的圆孔111，将第一紧固件333放置到轴套32上的安装孔3212内。此时，安装孔3212底部的环形挡片32121能够与第一限位块331a上的扳拧部3312相互抵靠，使得弹性限位机构33被约束在安装孔3212内，并且第一限位块331a上的限位单元3314(包括第一限位单元3314a、第二限位单元3314b和第三限位单元3314c)在弹性件332的预加张力作用下延伸出安装孔3212。通过工具扳拧第一紧固件333上的第二扳拧槽3332，使得第一紧固件333固定到安装孔3212内。然后，将电机轴31插入到轴套32上的轴孔322中。将电机轴31的自由端314与轴孔322相对，通过电机轴31上的限位平面3111和轴孔322上的限位孔壁配合，电机轴31可以方便地定位到轴孔322上。将工具穿过叶片11上的圆孔111和第一紧固件333上的中心通孔3331，并利用工具旋拧设置在第一限位块331a的扳拧部3312上的第一扳拧槽33121，使得第一限位块331a上的每个限位单元3314的限位斜壁33142始终朝向电机20一侧。当电机轴31插入轴孔322过程中，每个限位单元3314在弹性件332的预加张力作用下，通过向外扩大的开口3121a插入到相对应的第一限位槽3121内。此时，限位斜壁33142与相对应的限位槽引导壁3121c相抵靠。电机轴31受到外力向轴孔322内运动，每个限位斜壁33142受到相对应的限位槽引导壁3121c的推力而被抬起，弹性件332回缩，使得每个限位单位3314从相对应的第一限位槽3121内脱离。因此，弹性限位机构33不影响电机轴31插入轴孔322。当电机轴31插入到轴孔322的合适的位置后，第一限位单元3314a、第二限位单元3314b和第三限位单元3314c在弹性件332的预加张力作用下插入到相对应的第一限位槽3121内。由于每个限位单元3314上的限位直壁33141与相对应的第一限位槽3121的限位槽直壁3121b相互抵靠，当在电机轴31上施加向外的抽力时，电机轴31会受到每个限位单元3314对相对应的第一限位槽3121施加的反作用力，使得电机轴31被限定在轴套32内而不会被抽出，从而实现弹性限位机构33与电机轴31之间的互锁。在上述的电机轴安装结构30装配过程中，用户可以方便地将电机轴31插入到轴孔322内，并通过固定在轴套32上的弹性限位机构33与电机轴31上的限位槽312配合形成互锁，显著提高了装配效率。
当第一种实施例的电机轴安装结构30在拆卸时，可以利用工具旋拧第一限位块331a上的第一扳拧槽33121，使得第一限位块331a旋转180°。此时，第一限位块331a上的每个限位单元3314的限位直壁33141朝向电机20一侧。在电机轴31上施加向外的抽力，每个限位单元3314上的限位斜壁33142在竖直分力的作用下被抬起，弹性件332回缩，电机轴31顺利地从轴孔322内抽出，从而解除弹性限位机构33与电机轴31之间的互锁。上述拆卸过程不需要将弹性限位机构33从轴套32上的安装孔3212内拆卸下来即可完成，极大地提高了拆卸效率。
在一种或多种实施例中，第一限位块331a配置成具有导磁性。当第一种实施例的电机轴安装结构30在拆卸时，可以将磁性工具(例如磁棒等)穿过设置在叶片11上的圆孔111和第一紧固件333上的中心通孔3331，利用磁性工具与第一限位块331a形成磁吸力作用，克服弹性件332施加给第一限位块331a的预加张力，使每个限位单元3314从相应的第一限位槽3121内吸出，弹性件332回缩，从而解除弹性限位机构33与电机轴31之间的互锁。上述拆卸过程同样不需要将弹性限位机构33从轴套32的安装孔3212内拆卸下来，提高了拆卸效率。
在一种或多种实施例中，用户也可以通过工具将第一紧固件333从安装孔3212上拆卸下来，并将弹性件332和第一限位块331a从安装孔3212内取出，从而解除弹性限位机构33与电机轴31之间的互锁。
电机轴安装结构30的第二种实施例
如图8所示，在一种或多种实施例中，电机轴安装结构30包括电机轴31、轴套32和弹性限位机构33。需要指出的是，电机轴安装结构30的第二种实施例中轴套32、弹性限位机构33中的弹性件332和第一固定件333均与电机轴安装结构30的第一种实施例具有相同的结构，在此不再赘述。
如图9所示，在一种或多种实施例中，在电机轴31的限位平面3111上设有沿电机轴31的中心轴线C均匀间隔布置的多个限位槽312。每个限位槽312配置成为第二限位槽3122。如图10所示，第二限位槽3122配置成为具有圆形截面的盲孔。第二限位槽3122具有向外扩大的环形喇叭口3122a，和竖直的孔壁3122b。环形喇叭口3122a能够引导弹性限位机构33中的限位块331，使限位块331更容易地进入到第二限位槽3122中。竖直的孔壁3122b可以与限位块331的限位直壁33141相互抵靠。
如图11所示，在一种或多种实施例中，限位块331配置成为第二限位块331b。第二限位块331b具有相对的大端3311和小端3313。在大端3311和小端3313之间形成有1个限位单元3314。限位单元3314可与任意一个第二限位槽3122相配合。可以理解的是，限位单元3314的数量可以设置成2个、3个或者其它合适的数量，只要每个限位单元3314能够与相对应的第二限位槽3122相匹配即可。进一步地，相邻两个限位单元3314的间距可以根据实际需要调整。限位单元3314包括限位直壁33141、限位平壁33143和限位斜壁33142。限位直壁33141配置成可与第二限位槽3122的孔壁3122b相互抵靠，并且限位斜壁33142可与环形喇叭口3122a相配。
需要指出的是，以上所提及的电机轴安装结构30的第二种实施例中电机轴31和第二限位块331b的其它的实施例，与电机轴安装结构30的第一种实施例的相关部分相同，在此不再赘述。
当第二种实施例的电机轴安装结构30在装配时，可以先将配置有第二限位块331b的弹性限位机构33固定在轴套32上的安装孔3212中。然后，将电机轴31插入到轴套32上的轴孔322中。利用工具旋拧设置在第二限位块331b的扳拧部3312上的第一扳拧槽33121，使得第二限位块331b上的限位斜壁33142始终朝向电机20一侧。当电机轴31插入轴孔322过程中，限位单元 3314在弹性件332的预加张力作用下，通过向外扩大的环形喇叭口3122a插入到相对应的第二限位槽3122内。当电机轴31受到外力向轴孔322内运动时，限位斜壁33142受到相对应的环形喇叭口3122a的推力而被抬起，弹性件332回缩，使得限位单位3314从相对应的第二限位槽3122内脱离。当电机轴31插入到轴孔322的合适的位置后，限位单元3314在弹性件332的预加张力作用下插入到相对应的第二限位槽3122内。由于限位单元3314上的限位直壁33141与相对应的第二限位槽3122的竖直的孔壁3122b相互抵靠，当在电机轴31上施加向外的抽力时，电机轴31会受到限位单元3314对相对应的第二限位槽3122施加的反作用力，使得电机轴31被限定在轴套32内而不会被抽出，从而实现弹性限位机构33与电机轴31之间的互锁。
当第二种实施例的电机轴安装结构30在拆卸时，可以利用工具旋拧第二限位块331b上的第一扳拧槽33121，使得第二限位块331b旋转180°。此时，第二限位块331b上的限位单元3314的限位直壁33141朝向电机20一侧。在电机轴31上施加向外的抽力，限位单元3314上的限位斜壁33142在竖直分力的作用下被抬起，弹性件332回缩，电机轴31顺利地从轴孔322内抽出，从而解除弹性限位机构33与电机轴31之间的互锁。
在一种或多种实施例中，第二限位块331b配置成具有导磁性。当第二种实施例的电机轴安装结构30在拆卸时，可以利用磁性工具与第二限位块331b形成磁吸力作用，将限位单元3314从相应的第二限位槽3122内吸出，弹性件332回缩，从而解除弹性限位机构33与电机轴31之间的互锁。
在一种或多种实施例中，用户也可以通过工具将第一紧固件333从安装孔3212上拆卸下来，并将弹性件332和第二限位块331b从安装孔3212内取出，从而解除弹性限位机构33与电机轴31之间的互锁。
电机轴安装结构30的第三种实施例
如图12所示，在一种或多种实施例中，电机轴安装结构30包括电机轴31、轴套32和弹性限位机构33。需要指出的是，电机轴安装结构30的第三种实施例中的电机轴31与电机轴安装结构30的第一种实施例具有相同的结构，在此不再赘述。
如图12-图14所示，在一种或多种实施例中，在轴套32的周壁321上形成有限位沉槽3211。限位沉槽3211具有大致矩形的形状。替代地，限位沉槽3211也可为方形、梯形，或者其它合适的形状。限位沉槽3211配置成与限位弹片334的固定部3341相匹配，使得固定部3341可嵌套在限位沉槽3211上。在限位沉槽3211上形成有安装孔3212。安装孔3212配置成可接纳弹性限位机构33的第二紧固件335。
如图12所示，在一种或多种实施例中，弹性限位机构33配置成包括限位弹片334和第二紧固件335。如图15所示，在一种或多种实施例中，限位弹片334包括固定部3341和从固定部3341的一侧端部向外延伸的弹性限位部3342。限位弹片334可采用不锈钢、锰钢，或者其它合适的材质制成，以提高限位弹片334的使用寿命。固定部3341具有大致矩形的形状。替代地，固定部3341也可为方形、梯形，或者其它合适的形状，只要能够与限位沉槽 3211相匹配使得固定部3341可嵌套在限位沉槽3211上即可。在固定部3341上形成有固定孔33411。固定孔33411具有大致圆形的形状。当固定部3341嵌套在限位沉槽3211上时，固定孔33411与限位沉槽3211上的安装孔3212相对。优选地，固定孔33411具有与安装孔3212相同的孔径，使得第二紧固件335能够更方便地穿过固定孔33411并固定在安装孔3212中。基于图15所示的方位，在一种或多种实施例中，弹性限位部3342配置成从固定部3341的左端沿与水平方向形成预定夹角γ斜向下地延伸。在一种或多种实施例中，预定夹角γ配置成与预定夹角α相等。预定夹角γ的范围为20°-70°。优选地，预定夹角γ为45°，使得限位弹片334的结构简单，便于制造。弹性限位部3342具有斜向限位底壁33422和竖直限位端壁33421。斜向限位底壁33422可与第一限位槽3121的限位槽引导壁3121c相匹配，并且竖直限位端壁33421可与第一限位槽3121的限位槽直壁3121b相互抵靠。
如图12所示，在一种或多种实施例中，第二紧固件335包括螺帽3351和形成在螺帽3351底部的螺杆3352。第二紧固件335采用合适的合金材料制成，例如碳素钢、合金钢等，以提高第二紧固件335的使用寿命。螺帽3351具有大致圆形的截面。替代地，螺帽3351也可配置成具有方形、正六边形，或者其它合适形状的截面。在螺帽3351的上部形成有第三扳拧槽33511。第三扳拧槽33511配置成十字槽，以便通过工具拆装第二紧固件335。替代地，第三扳拧槽33511也可设置成一字槽，或者其它合适的形式。在螺杆3352的周壁上形成有螺纹，并且在安装孔3212的内壁上设有与之相匹配的螺纹，使得第二紧固件335可拆卸地固定在安装孔3212上，并形成牢固的螺纹连接。替代地，第二紧固件335与安装孔3212之间也可形成卡扣连接，或者其它合适的连接方式。
需要指出的是，以上所提及的电机轴安装结构30的第三种实施例中轴套32的其它的实施例，与电机轴安装结构30的第一种实施例的相关部分相同，在此不再赘述。
当第三种实施例的电机轴安装结构30在装配时，可以先将配置有限位弹片334的弹性限位机构33固定在轴套32上的安装孔3212中。将限位弹片334的固定部3341嵌套在轴套32的限位沉槽3211内。利用工具将旋拧第二紧固件335上的第三扳拧槽33511，使得限位弹片334固定在轴套32上。此时，限位弹片334的弹性限位部3342朝向远离电机20的一侧延伸。当电机轴31插入轴孔322过程中，限位弹片334的弹性限位部3342的末端通过向外扩大的开口3121a插入到第一限位槽3121内。当电机轴31受到外力向轴孔322内运动时，斜向限位底壁33422受到限位槽引导壁3121c的推力而被抬起，限位弹片334发生变形，使得弹性限位部3342从相对应的第一限位槽3121内脱离。当电机轴31插入到轴孔322的合适的位置后，弹性限位部3342的末端插入到相对应的第一限位槽3121内。竖直限位端壁33421与相对应的第一限位槽3121的限位槽直壁3121b相互抵靠。当在电机轴31上施加向外的抽力时，电机轴31会受到弹性限位部3342对相对应的第一限位槽3121施加的反作用力，使得 电机轴31被限定在轴套32内而不会被抽出，从而实现弹性限位机构33与电机轴31之间的互锁。
当第三种实施例的电机轴安装结构30在拆卸时，可以通过工具将第二紧固件335从安装孔3212上拆卸下来，并将限位弹片334从安装孔3212内取出，从而解除弹性限位机构33与电机轴31之间的互锁。
本领域技术人员可以理解的是，本发明的电机轴安装结构30不限于应用在贯流风机和空调上，也可以应用在其它合适的具有电机的设备上。
至此，已经结合附图所示的优选实施方式描述了本发明的技术方案，但是，本领域技术人员容易理解的是，本发明的保护范围显然不局限于这些具体实施方式。在不偏离本发明的原理的前提下，本领域技术人员可以对来自不同实施例的技术特征进行组合，也可以对相关技术特征作出等同的更改或替换，这些更改或替换之后的技术方案都将落入本发明的保护范围之内。

Claims (10)

  1. 一种电机轴安装结构，其特征在于，所述电机轴安装结构包括：
    电机轴，在所述电机轴的周向壁上形成有沿所述电机轴的轴线彼此间隔的多个限位槽；
    轴套，所述轴套配置成可接纳所述电机轴，并且在所述轴套的周壁上形成有安装孔；和
    弹性限位机构，所述弹性限位机构可拆卸地固定在所述安装孔中，并配置成可与所述多个限位槽的至少一个配合形成互锁。
  2. 根据权利要求1所述的电机轴安装结构，其特征在于，在所述周向壁上形成有沿所述轴线延伸的限位平面，所述限位平面延伸至所述电机轴的自由端，并且所述多个限位槽形成在所述限位平面上。
  3. 根据权利要求1所述的电机轴安装结构，其特征在于，所述弹性限位机构包括限位块、弹性件、和第一紧固件，其中，
    所述限位块具有相对的大端和小端，所述小端可插入到所述限位槽中，并且在所述大端和小端之间形成有相对的限位直壁和限位斜壁，所述限位斜壁从所述小端朝所述大端倾斜延伸远离所述限位直壁；
    所述弹性件具有抵靠所述大端的第一端和抵靠所述第一紧固件的第二端；并且
    所述第一紧固件与所述安装孔相匹配以通过所述弹性件施加的预加张力将所述限位块约束在至少一个所述限位槽中，并且所述限位直壁比所述限位斜壁更靠近所述电机轴的自由端。
  4. 根据权利要求3所述的电机轴安装结构，其特征在于，每个所述限位槽具有扩大的开口并且包括相对的限位槽直壁和限位槽引导壁，所述限位槽直壁可与所述限位直壁相互抵靠，并且所述限位槽引导壁可与所述限位斜壁相配。
  5. 根据权利要求3所述的电机轴安装结构，其特征在于，每个所述限位槽配置成具有圆形截面的盲孔，所述盲孔具有向外扩大的环形喇叭口和竖直的孔壁，所述孔壁可与所述限位直壁相互抵靠。
  6. 根据权利要求3所述的电机轴安装结构，其特征在于，
    所述限位块包括形成在所述大端上的扳拧部，并且
    所述第一紧固件设有中心通孔，以便可通过所述中心通孔和所述扳拧部转动所述限位块，来解除所述限位块与所述限位槽之间的互锁。
  7. 根据权利要求3所述的电机轴安装结构，其特征在于，所述限位块具有导磁性，以便通过磁性工具解除所述限位块与所述限位槽之间的互锁。
  8. 根据权利要求1所述的电机轴安装结构，其特征在于，在所述轴套的周壁上形成有限位沉槽，所述安装孔布置在所述限位沉槽内，并且所述弹性限位机构包括限位弹片和第二紧固件，其中，
    所述第二紧固件与所述安装孔相配；并且
    所述限位弹片具有固定部和从所述固定部向外延伸的弹性限位部，所述固定部配置成可嵌套在所述限位沉槽内，并且在所述固定部上形成有与所述安装孔相对并可接纳所述第二紧固件的末端的固定孔，所述弹性限位部配置成可插入至少一个所述限位槽内以形成互锁。
  9. 一种贯流风机，其特征在于，所述贯流风机包括：
    贯流风机本体；和
    电机，
    所述电机具有根据权利要求1-8任一项所述电机轴安装结构，其中，所述轴套固定在所述贯流风机本体的一个纵向端部中。
  10. 一种空调，其特征在于，所述空调包括根据权利要求9所述的贯流风机。
PCT/CN2022/095618 2021-03-31 2022-05-27 电机轴安装结构、贯流风机及空调 Ceased WO2022207012A1 (zh)

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