EP2907436A1 - A motor denoising structure applied to vacuum cleaners - Google Patents

A motor denoising structure applied to vacuum cleaners Download PDF

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Publication number
EP2907436A1
EP2907436A1 EP14193331.7A EP14193331A EP2907436A1 EP 2907436 A1 EP2907436 A1 EP 2907436A1 EP 14193331 A EP14193331 A EP 14193331A EP 2907436 A1 EP2907436 A1 EP 2907436A1
Authority
EP
European Patent Office
Prior art keywords
motor
support
vacuum cleaners
motor cover
denoising structure
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.)
Granted
Application number
EP14193331.7A
Other languages
German (de)
French (fr)
Other versions
EP2907436B1 (en
Inventor
Zugen Ni
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.)
Kingclean Electric Co Ltd
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Kingclean Electric Co Ltd
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Filing date
Publication date
Application filed by Kingclean Electric Co Ltd filed Critical Kingclean Electric Co Ltd
Publication of EP2907436A1 publication Critical patent/EP2907436A1/en
Application granted granted Critical
Publication of EP2907436B1 publication Critical patent/EP2907436B1/en
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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/0081—Means for exhaust-air diffusion; Means for sound or vibration damping
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/22—Mountings for motor fan assemblies

Definitions

  • the present invention relates to a motor denoising structure applied to vacuum cleaners.
  • a purpose of the present invention is as follows: A motor denoising structure applied to vacuum cleaners is provided, supporting the motor by a flexible support, such a flexible connection reducing noise while reducing vibration.
  • a technical solution of the present invention is as follows: A motor denoising structure applied to vacuum cleaners, whose motor is mounted and fixed through two or more flexible supports on both sides of the motor.
  • the flexible support is a resilient support having a supporting function.
  • This motor denoising structure further comprises a motor cover, the flexible support on both sides of the motor being connected and fixed on the motor cover.
  • the lower portion of the motor in the present invention is suspended inside the motor cover, and certainly other cushioning parts (e.g. a damping pad and a spring) can also be disposed between the tail portion of the motor and the motor cover, so as to achieve the corresponding damping effect.
  • cushioning parts e.g. a damping pad and a spring
  • the solution that the lower portion of the motor is suspended inside the motor cover is preferred in the present invention, thereby preventing the lower portion of the motor from contacting the motor cover to make the motor vibration transferred to the motor cover, which can better reduce noise and the production cost as well.
  • the motor is provided at its periphery with a motor support used for fixing the motor, the flexible support being disposed between the motor cover and the motor support.
  • the specific mounting structure of the flexible support is as follows:
  • the motor cover is provided at its upper edge opposite to each of the flexible supports with a positioning groove, respectively, inside which is mounted the first cushion that is provided inside with a mounting groove used for embedding an outer end portion of the flexible support;
  • the motor cover is provided with an external motor cover fixedly connected thereto, with a second cushion being disposed between the external motor cover and the motor cover;
  • the second cushion has a projecting portion corresponding to the mounting groove, inside which is embedded the outer end of the flexible support, that is pressed tight and fixed by the projecting portion of the second cushion.
  • the motor support comprises at least one pair of supports engaging each other, between each of the supports and the motor cover being connected the flexible support, the inner end portion of the flexible support being jointed to the corresponding support and connected and fixed through a screw.
  • the flexible support is a flexible metal sheet.
  • a motor denoising structure applied to vacuum cleaners comprising a motor 1 and a motor cover 3, the motor 1 being provided at its periphery with a motor support 4 used for fixing the motor, the motor support 4 and the motor cover 3 being connected and fixed through two or more flexible supports 5 having a supporting function.
  • the flexible supports 5 there are two flexible supports 5, which are correspondingly disposed on both sides of the motor support 4, the flexible support 5 being a flexible metal sheet.
  • the lower portion of the motor 1 in the present invention is suspended inside the motor cover 3, and certainly other cushioning parts (e.g. a damping pad and a spring) can also be disposed between the tail portion of the motor 1 and the motor cover 3, so as to achieve the corresponding damping effect.
  • the solution that the lower portion of the motor 1 is suspended inside the motor cover is preferred in this example, thereby preventing the lower portion of the motor 1 from contacting the motor cover 3 to make vibration of the motor 1 transferred to the motor cover 3, which can better reduce noise and the production cost as well.
  • the flexible support 5 has the following specific mounting structure:
  • the motor cover 3 is provided at its upper edge opposite to each of the flexible supports 5 with a positioning groove 31, respectively, inside which is mounted the first cushion 6 that is provided inside with a mounting groove 61 used for embedding an outer end portion of the flexible support 5;
  • the motor cover 3 is provided with an external motor cover 2 fixedly connected thereto, with a second cushion 7 being disposed between the external motor cover 2 and the motor cover 3;
  • the second cushion 7 has a projecting portion 71 corresponding to the mounting groove 61, inside which is embedded the outer end of the flexible support 5, that is pressed tight and fixed by the projecting portion 71 of the second cushion 7.
  • the motor support 4 comprises at least one pair of supports 41 engaging each other, between each of the supports 41 and the motor cover 3 being connected the flexible support 5, the inner end portion of the flexible support 5 being jointed to the corresponding support 41 and connected and fixed through a screw 8.
  • Such a mounting method better reduces the vibration between the flexible support 5 and the motor cover 3 and external motor cover 2, and thus better reduces the noise.
  • the flexible support 5 is accommodated by the motor cover 3, with its outer end and inner end portion intersecting at a right angle having a gradually transitional arc; the outer end of the flexible support 5 is disposed between the first cushion 6 and the second cushion 7 and far away from the motor center direction, and provided with two supporting points, the inner end portion being provided with a single fixing point and close to the motor center direction.
  • the upper surface of the first cushion 6 is substantially flush with the upper surface of the motor cover 3.
  • the centerline of the motor 1 is perpendicular to the horizontal plane, with the head portion of the motor 1 disposed above the tail portion.
  • the positioning groove 31 is provided with a positioning post, while the first cushion 6 is provided with a positioning hole that allows the positioning post to go through, with at least a part of the side of the two supporting points on the outer end contacting against the projection of the first cushion 6.
  • the first cushion 6 is in a block form, while the second cushion 7 is in a closed annular form.
  • the present invention makes use of the flexible support 5 to connect the motor support 4 and the motor cover 3, and meanwhile ensures that lower portion of the motor 1 is suspended, with the corresponding first cushion 6 and second cushion 7 disposed between the outer end portion of the flexible support 5 and the motor cover 3 and external motor cover 2; the above multiple damping structures reduce vibration and greatly reduce noise of the motor, achieving low noise of the vacuum cleaner.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

The present invention discloses a motor denoising structure applied to vacuum cleaners, whose motor is mounted and fixed through two or more flexible supports on both sides of the motor; the present invention makes use of the flexible support to connect the motor to the motor cover, such a flexible connection reducing noise while reducing vibration.

Description

    FIELD OF THE INVENTION
  • The present invention relates to a motor denoising structure applied to vacuum cleaners.
    • BACKGROUND OF THE INVENTION
  • With the motor power of a vacuum cleaner gradually increased, the noise of the vacuum cleaner is also increased. In the prior art, in order to resolve the problem of motor noise of the vacuum cleaner, the manufacturers usually take the following approaches:
    1. 1. Making effort on the motor itself, and achieving low noise output by reducing the power consumption while ensuring its work efficiency; however, this approach suffers high cost, with the actual denoising effect not very ideal.
    2. 2. Making improvement in the wind channel in the motor housing, such as making improvement in the shape of the dynamic and static wind wheels, or reducing noise by the addition of an anechoic room, a wind pipe and other structures; however, this approach has the disadvantages that the motor housing has complicated structure design, the model is more difficult to be manufactured, and the cost is increased.
    3. 3. Since the low-frequency noise of the vacuum cleaner mainly comes from vibration of the motor, in order to reduce vibration of the motor, in the industry the motor is fixed inside the motor cover front and rear with a motor seal ring and a motor pressure seat; however, the prior art motor and motor cover are fixed mostly by rigid connection, which still has a limited silencing effect and may also produce resonance, not able to achieve low noise of the motor.
    CONTENTS OF THE INVENTION
  • A purpose of the present invention is as follows: A motor denoising structure applied to vacuum cleaners is provided, supporting the motor by a flexible support, such a flexible connection reducing noise while reducing vibration.
  • A technical solution of the present invention is as follows: A motor denoising structure applied to vacuum cleaners, whose motor is mounted and fixed through two or more flexible supports on both sides of the motor.
  • The flexible support is a resilient support having a supporting function.
  • A further technical solution of the present invention is as follows: This motor denoising structure further comprises a motor cover, the flexible support on both sides of the motor being connected and fixed on the motor cover.
  • In order to better damp vibration and reduce noise, the lower portion of the motor in the present invention is suspended inside the motor cover, and certainly other cushioning parts (e.g. a damping pad and a spring) can also be disposed between the tail portion of the motor and the motor cover, so as to achieve the corresponding damping effect. The solution that the lower portion of the motor is suspended inside the motor cover is preferred in the present invention, thereby preventing the lower portion of the motor from contacting the motor cover to make the motor vibration transferred to the motor cover, which can better reduce noise and the production cost as well.
  • Furthermore, the motor is provided at its periphery with a motor support used for fixing the motor, the flexible support being disposed between the motor cover and the motor support.
  • The specific mounting structure of the flexible support is as follows: The motor cover is provided at its upper edge opposite to each of the flexible supports with a positioning groove, respectively, inside which is mounted the first cushion that is provided inside with a mounting groove used for embedding an outer end portion of the flexible support; the motor cover is provided with an external motor cover fixedly connected thereto, with a second cushion being disposed between the external motor cover and the motor cover; the second cushion has a projecting portion corresponding to the mounting groove, inside which is embedded the outer end of the flexible support, that is pressed tight and fixed by the projecting portion of the second cushion. The motor support comprises at least one pair of supports engaging each other, between each of the supports and the motor cover being connected the flexible support, the inner end portion of the flexible support being jointed to the corresponding support and connected and fixed through a screw.
  • The flexible support is a flexible metal sheet.
  • The present invention has the following advantages:
    1. 1. The present invention makes use of the flexible support to connect the motor support and the motor cover, such a flexible connection reducing noise while reducing vibration.
    2. 2. The lower portion of the motor in the present invention is preferably suspended inside the motor cover, thereby preventing the lower portion of the motor from contacting the motor cover to make the motor vibration transferred to the motor cover, which can better reduce noise and the production cost as well.
    3. 3. The outer end of the flexible support in the present invention is embedded inside the mounting groove of the first cushion, and clamped and fixed by the first cushion and the second cushion, such a mounting method better reducing the vibration between the flexible support and the motor cover and external motor cover thus better reducing the noise.
    BRIEF DESCRIPTION OF THE DRAWINGS
  • The present invention will be further described below with reference to drawings and examples.
    • Fig. 1 is a schematic view of the present invention;
    • Fig. 2 is a structural schematic view of the present invention;
    • Fig. 3 is a partial enlarged view of Fig. 1;
    • Fig. 4 is an assembly drawing of the present invention;
    • Fig. 5 is a sectional schematic view of the present invention when the external motor cover is not mounted;
    • Fig. 6 is a sectional view of the present invention when being applied to a vacuum cleaner; and
    • Fig. 7 is another sectional view of the present invention when being applied to a vacuum cleaner.
  • Wherein: 1. motor;
    • 2. external motor cover;
    • 3. motor cover; 31. positioning groove;
    • 4. motor support; 41. support;
    • 5. flexible support;
    • 6. first cushion; 61. mounting groove;
    • 7. second cushion; 71. projecting portion;
    • 8. screw.
    DETAILED DESCRIPTION OF THE EMBODIMENTS
  • Example: As shown in Figs. 1-7, a motor denoising structure applied to vacuum cleaners, comprising a motor 1 and a motor cover 3, the motor 1 being provided at its periphery with a motor support 4 used for fixing the motor, the motor support 4 and the motor cover 3 being connected and fixed through two or more flexible supports 5 having a supporting function. In this example, there are two flexible supports 5, which are correspondingly disposed on both sides of the motor support 4, the flexible support 5 being a flexible metal sheet.
  • In order to better damp vibration and reduce noise, the lower portion of the motor 1 in the present invention is suspended inside the motor cover 3, and certainly other cushioning parts (e.g. a damping pad and a spring) can also be disposed between the tail portion of the motor 1 and the motor cover 3, so as to achieve the corresponding damping effect. The solution that the lower portion of the motor 1 is suspended inside the motor cover is preferred in this example, thereby preventing the lower portion of the motor 1 from contacting the motor cover 3 to make vibration of the motor 1 transferred to the motor cover 3, which can better reduce noise and the production cost as well.
  • As shown in Fig. 4, the flexible support 5 has the following specific mounting structure: The motor cover 3 is provided at its upper edge opposite to each of the flexible supports 5 with a positioning groove 31, respectively, inside which is mounted the first cushion 6 that is provided inside with a mounting groove 61 used for embedding an outer end portion of the flexible support 5; the motor cover 3 is provided with an external motor cover 2 fixedly connected thereto, with a second cushion 7 being disposed between the external motor cover 2 and the motor cover 3; the second cushion 7 has a projecting portion 71 corresponding to the mounting groove 61, inside which is embedded the outer end of the flexible support 5, that is pressed tight and fixed by the projecting portion 71 of the second cushion 7. The motor support 4 comprises at least one pair of supports 41 engaging each other, between each of the supports 41 and the motor cover 3 being connected the flexible support 5, the inner end portion of the flexible support 5 being jointed to the corresponding support 41 and connected and fixed through a screw 8. Such a mounting method better reduces the vibration between the flexible support 5 and the motor cover 3 and external motor cover 2, and thus better reduces the noise.
  • Wherein at least a part of the flexible support 5 is accommodated by the motor cover 3, with its outer end and inner end portion intersecting at a right angle having a gradually transitional arc; the outer end of the flexible support 5 is disposed between the first cushion 6 and the second cushion 7 and far away from the motor center direction, and provided with two supporting points, the inner end portion being provided with a single fixing point and close to the motor center direction. The upper surface of the first cushion 6 is substantially flush with the upper surface of the motor cover 3. The centerline of the motor 1 is perpendicular to the horizontal plane, with the head portion of the motor 1 disposed above the tail portion. The positioning groove 31 is provided with a positioning post, while the first cushion 6 is provided with a positioning hole that allows the positioning post to go through, with at least a part of the side of the two supporting points on the outer end contacting against the projection of the first cushion 6. The first cushion 6 is in a block form, while the second cushion 7 is in a closed annular form.
  • The present invention makes use of the flexible support 5 to connect the motor support 4 and the motor cover 3, and meanwhile ensures that lower portion of the motor 1 is suspended, with the corresponding first cushion 6 and second cushion 7 disposed between the outer end portion of the flexible support 5 and the motor cover 3 and external motor cover 2; the above multiple damping structures reduce vibration and greatly reduce noise of the motor, achieving low noise of the vacuum cleaner.
  • What is described above is only a specific application example of the present invention, and cannot limit the scope of protection of the present invention. In addition to the above example, the present invention can also have other embodiments. Any technical solution based on equal substitution or equivalent alteration all falls within the scope seeking protection in the present invention.

Claims (9)

  1. A motor denoising structure applied to vacuum cleaners, characterized in that: a motor (1) is mounted and fixed through two or more flexible supports on both sides of the motor (1).
  2. The motor denoising structure applied to vacuum cleaners according to claim 1, wherein the flexible support is a resilient support (5) having a supporting function.
  3. The motor denoising structure applied to vacuum cleaners according to claim 2, wherein the flexible support (5) is mounted on a first cushion (6).
  4. The motor denoising structure applied to vacuum cleaners according to claim 3, wherein this motor denoising structure further comprises a motor cover (3), the flexible support (5) on both sides of the motor (1) being connected and fixed on the motor cover (3).
  5. The motor denoising structure applied to vacuum cleaners according to claim 4, wherein the motor cover (3) is provided at its upper edge opposite to each of the flexible supports (5) with a positioning groove (31), respectively, inside which is mounted the first cushion (6) that is provided inside with a mounting groove (61) used for embedding an outer end portion of the flexible support (5); the motor cover (3) is provided with an external motor cover (2) fixedly connected thereto, with a second cushion (7) being disposed between the external motor cover (2) and the motor cover (3); the second cushion (7) has a projecting portion (71) corresponding to the mounting groove (61), inside which is embedded the outer end of the flexible support (5) that is pressed tight and fixed by the projecting portion (71) of the second cushion (7).
  6. The motor denoising structure applied to vacuum cleaners according to claim 4, wherein a lower portion of the motor (1) is suspended inside the motor cover (3).
  7. The motor denoising structure applied to vacuum cleaners according to claim 4, wherein the motor (1) is provided at its periphery with a motor support (4) used for fixing the motor, the flexible support (5) being disposed between the motor cover (3) and the motor support (4).
  8. The motor denoising structure applied to vacuum cleaners according to claim 7, wherein the motor support (4) comprises at least one pair of supports (41) engaging each other, between each of the supports (41) and the motor cover (3) being connected the flexible support (5), the inner end portion of the flexible support (5) being jointed to the corresponding support (41) and connected and fixed through a screw (8).
  9. The motor denoising structure applied to vacuum cleaners according to claim 2, 3, 4, 5, 6, 7 or 8, wherein the flexible support (5) is a flexible metal sheet.
EP14193331.7A 2014-02-18 2014-11-14 A motor denoising structure applied to vacuum cleaners Active EP2907436B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410053827.9A CN104840154B (en) 2014-02-18 2014-02-18 A kind of noise reduction structure of motor applied to dust catcher

Publications (2)

Publication Number Publication Date
EP2907436A1 true EP2907436A1 (en) 2015-08-19
EP2907436B1 EP2907436B1 (en) 2020-08-19

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EP14193331.7A Active EP2907436B1 (en) 2014-02-18 2014-11-14 A motor denoising structure applied to vacuum cleaners

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EP (1) EP2907436B1 (en)
CN (1) CN104840154B (en)

Cited By (4)

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Publication number Priority date Publication date Assignee Title
CN106419742A (en) * 2016-08-26 2017-02-22 珠海格力电器股份有限公司 Vacuum cleaner
WO2017076704A1 (en) * 2015-11-02 2017-05-11 Koninklijke Philips N.V. A device for mounting a motor assembly of an electric appliance
EP3257418A4 (en) * 2015-02-15 2018-11-14 Kingclean Electric Co., Ltd. Motor noise reduction structure for dust collector, and dust collector
CN112704430A (en) * 2019-10-24 2021-04-27 株式会社牧田 Dust collector

Families Citing this family (6)

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Publication number Priority date Publication date Assignee Title
CN105054866B (en) * 2015-08-20 2018-01-16 莱克电气股份有限公司 Floated noise reduction motor
EP3238592B1 (en) 2016-04-27 2021-06-02 Diversey, Inc. Vacuum cleaner
CN109106285A (en) * 2017-06-26 2019-01-01 美的集团股份有限公司 Dust catcher
CN107485331A (en) * 2017-09-08 2017-12-19 苏州海歌电器科技有限公司 The dampening assembly of motor of dust collector
CN108309147B (en) * 2018-04-04 2024-05-10 盐城工业职业技术学院 Electric dust collector and cleaning device
CN109088507A (en) * 2018-09-27 2018-12-25 苏州市春菊电器有限公司 A kind of cleaner motor damping device

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EP2436291A1 (en) * 2009-05-29 2012-04-04 Kabushiki Kaisha Toshiba Electric cleaner

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EP2436291A1 (en) * 2009-05-29 2012-04-04 Kabushiki Kaisha Toshiba Electric cleaner

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3257418A4 (en) * 2015-02-15 2018-11-14 Kingclean Electric Co., Ltd. Motor noise reduction structure for dust collector, and dust collector
US10524626B2 (en) 2015-02-15 2020-01-07 Kingclean Electric Co., Ltd. Motor noise reduction structure for dust collector, and dust collector
WO2017076704A1 (en) * 2015-11-02 2017-05-11 Koninklijke Philips N.V. A device for mounting a motor assembly of an electric appliance
RU2664223C1 (en) * 2015-11-02 2018-08-15 Конинклейке Филипс Н.В. Device for engine mounting in household electric appliance
CN106419742A (en) * 2016-08-26 2017-02-22 珠海格力电器股份有限公司 Vacuum cleaner
CN112704430A (en) * 2019-10-24 2021-04-27 株式会社牧田 Dust collector
US20210121031A1 (en) * 2019-10-24 2021-04-29 Makita Corporation Dust extractor
JP2021065463A (en) * 2019-10-24 2021-04-30 株式会社マキタ Dust collector
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CN112704430B (en) * 2019-10-24 2024-04-09 株式会社牧田 Dust Collector

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Publication number Publication date
EP2907436B1 (en) 2020-08-19
CN104840154A (en) 2015-08-19
CN104840154B (en) 2018-03-02

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