CN108679674B - Rotating force transmission device, rotating device for electrical appliance, wind wheel device and range hood - Google Patents
Rotating force transmission device, rotating device for electrical appliance, wind wheel device and range hood Download PDFInfo
- Publication number
- CN108679674B CN108679674B CN201810722473.0A CN201810722473A CN108679674B CN 108679674 B CN108679674 B CN 108679674B CN 201810722473 A CN201810722473 A CN 201810722473A CN 108679674 B CN108679674 B CN 108679674B
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- transmission structure
- transmission
- rotating shaft
- rotating
- wind wheel
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 162
- 238000013016 damping Methods 0.000 claims abstract description 59
- 238000000034 method Methods 0.000 claims abstract description 6
- 238000003825 pressing Methods 0.000 claims abstract description 3
- 239000011359 shock absorbing material Substances 0.000 claims description 4
- 230000003044 adaptive effect Effects 0.000 claims description 2
- 230000035939 shock Effects 0.000 claims description 2
- 238000010008 shearing Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000010030 laminating Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention provides a rotating force transmission device, a rotating device for an electrical appliance, a wind wheel device and a range hood, relates to the technical field of household electrical appliances, and solves the technical problem that a damping part in the rotating force transmission device used by the range hood in the prior art is easy to be subjected to shearing force and fatigue fracture. The first rotating shaft of the rotating force transmission device is provided with a first transmission structure, the second rotating shaft is provided with a second transmission structure, the damping piece is arranged between the first transmission structure and the second transmission structure, and in the rotating process of the first rotating shaft, the first transmission structure can drive the second transmission structure through the damping piece in a mode of applying pressure stress to the damping piece and drive the second rotating shaft to rotate through the second transmission structure. The damping piece is free from shearing force, so that the fatigue fracture of the damping piece is effectively reduced, and the safety and the reliability of the range hood are improved.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a rotating force transmission device, a rotating device for an appliance, a wind wheel device and a range hood.
Background
In the prior art, a wind wheel of a range hood is a metal wind wheel, and the structure of the wind wheel is divided into a rotating shaft, an upper hub, a lower hub and fan blades. The rotating shaft can be fixed on the lower hub through means such as rivets or screws, and the fan blades are fixed between the upper hub and the lower hub in a riveting mode. The motor is inserted into the rotating shaft to drive the wind wheel to rotate. The contact between the rotating shaft and the lower hub and the contact between the motor and the rotating shaft are rigid contacts. When the motor has vibration noise, the vibration noise is transmitted to the wind wheel rotating shaft through the motor shaft and is transmitted to the integral wind wheel through the rotating shaft. When the rotating speed of the wind wheel is close to or consistent with the fundamental frequency or the frequency multiplication of the vibration noise of the motor, resonance occurs to generate resonance noise.
In order to solve the problem of vibration noise of the shaft coupling mechanism, some researches have been carried out, and some people adopt a damping component which is arranged at a central rotating shaft and is connected with a metal sheet through a rubber ring. One end of the metal connecting sheet is fixed with the rubber ring, and the other end of the metal connecting sheet is fixed with the inner side end of the middle disc. This approach also reduces resonance noise to some extent. However, since the rubber ring as a damping element in this way transmits the motor torque to the wind wheel via radial shear forces, the rubber ring is subjected to shear forces during operation without interruption. When the rubber part is subjected to shearing force, the rubber part is easy to generate fatigue fracture particularly in the oil stain environment of the range hood, so that the whole wind wheel falls off, and great harm is caused to users.
Disclosure of Invention
The invention aims to provide a rotating force transmission device, a rotating device for an electric appliance, a wind wheel device and a range hood, and aims to solve the technical problem that a damping part in the rotating force transmission device used by the range hood in the prior art is easy to be subjected to shear force to cause fatigue fracture. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a rotating force transmission device, which comprises a first rotating shaft, a second rotating shaft and a damping piece, wherein: the first rotating shaft is provided with a first transmission structure, the second rotating shaft is provided with a second transmission structure, the damping piece is arranged between the first transmission structure and the second transmission structure, and in the rotating process of the first rotating shaft, the first transmission structure can drive the second transmission structure through the damping piece in a mode of applying pressure stress to the damping piece and drive the second rotating shaft to rotate through the second transmission structure.
Optionally, the first transmission structure and the second transmission structure have adaptive concave-convex structures.
Optionally, the first transmission structure is formed by extending the first rotating shaft axially, and the second transmission structure is formed by extending the second rotating shaft axially.
Optionally, the second transmission structure is located at an end of the second rotating shaft.
Optionally, the first shaft comprises a main body section and a straight rod section, the first transmission structure being located at an end of the main body section.
Optionally, the end of the first transmission structure is provided with at least one first protrusion and/or first groove, correspondingly, the end of the second transmission structure is provided with at least one second groove and/or second protrusion, the first protrusion is adapted to the second groove, and the second protrusion is adapted to the first groove.
Optionally, the second transmission structure is detachably fixed to the second rotating shaft.
Optionally, the shapes of the two engaging surfaces of the damping member are respectively adapted to the shapes of the engaging surface of the first transmission structure and the engaging surface of the second transmission structure.
Optionally, the damping element is fixedly arranged on the first transmission structure and/or the second transmission structure.
Optionally, the damping member is a shock absorbing material, and the shock absorbing material is coated or injected at the joint surface of the first transmission structure and/or the joint surface of the second transmission structure.
Optionally, the damping member is a flexible damping ring disposed between the first transmission structure and the second transmission structure.
Optionally, the first side of the flexible damping ring is clamped or bonded to the joint surface of the first transmission structure, and the second side of the flexible damping ring is clamped or bonded to the joint surface of the second transmission structure.
A rotating device for an electric appliance comprises a motor and the rotating force transmission device, wherein a transmission shaft of the motor forms a first rotating shaft.
A wind wheel device comprises a wind wheel body and the electric rotating device, wherein the wind wheel body is connected with a second rotating shaft and can rotate along with the second rotating shaft.
A range hood comprises the wind wheel device.
The invention provides a rotating force transmission device, a rotating device for an electric appliance, a wind wheel device and a range hood. The damping piece is not subjected to shearing force, so that the fatigue fracture of the damping piece is effectively reduced, and the safety and the reliability of the range hood are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a wind wheel device of the present invention, in which a motor transmission shaft and a wind wheel rotating shaft are driven by a rotational force transmission device of the present invention;
figure 2 is a perspective view of an exploded structure of a wind wheel assembly of the present invention;
figure 3 is a schematic view in partial section and in elevation of the wind rotor of figure 2;
FIG. 4 is an enlarged partial schematic view of portion A of FIG. 3;
FIG. 5 is a perspective view of the motor of FIG. 2;
FIG. 6 is a cross-sectional schematic view of the motor;
FIG. 7 is an enlarged partial schematic view of portion B of FIG. 6;
FIGS. 8-11 are schematic views of several embodiments of the present invention for a torque transmission device, wherein FIGS. 8-10 are views of the first and second transmission structures formed to extend axially along the axis in which they are located, and FIG. 11 is a view of the first and second transmission structures formed to extend radially along the axis in which they are located;
fig. 12 is a schematic structural view of the wind wheel device mounted on the wind tunnel, in which the second transmission structure is detachably fixed on the wind wheel rotating shaft;
FIG. 13 is a perspective view of the exploded structure of FIG. 12;
FIG. 14 is a partial cross-sectional structural schematic view of FIG. 13;
fig. 15 is a schematic view of a partial cross-sectional structure of a range hood according to the present invention;
FIG. 16 is a schematic view of the attachment of the impeller device to the air chute of FIG. 15;
fig. 17 is a perspective view of the wind wheel device and the wind tunnel from another perspective after they are assembled.
Fig. 1, a second rotating shaft; 2. a second transmission structure; 21. a second protrusion; 22. a second groove; 3. a first rotating shaft; 4. a first transmission structure; 41. a first groove; 42. a first protrusion; 5. a damping member; 7. a motor; 8. the wind wheel body; 9. a knob; 10. a transmission rod; 11. a bearing; 12. an air duct.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
The invention provides a rotating force transmission device, which comprises a first rotating shaft 3, a second rotating shaft 1 and a damping piece 5, wherein: be provided with first transmission structure 4 on the first pivot 3, be provided with second transmission structure 2 on the second pivot 1, damping piece 5 is between first transmission structure 4 and second transmission structure 2, and first pivot 3 rotates the in-process, and first transmission structure 4 can drive second transmission structure 2 and drive second pivot 1 through second transmission structure 2 and rotate by damping piece 5 through the mode of applying compressive stress to damping piece 5.
As an alternative embodiment, as shown in fig. 2 to 7, the first transmission structure 4 and the second transmission structure 2 have a matched concave-convex structure.
Adopt concave-convex structure to sting full transmission, the laminating is inseparable, and the transmission is steady reliable.
The connection structure between the first transmission structure 4 and the second transmission structure 2 can also adopt several types shown in fig. 8 to 11 and other modes which are not written in the embodiment so as to transmit the rotating force between the first rotating shaft 3 and the second rotating shaft 1 in a manner of applying compressive stress to the damping member 5.
As an alternative embodiment, as shown in fig. 1 and 8 to 10, the first transmission structure 4 is formed by extending the first rotating shaft 3 axially, and the second transmission structure 2 is formed by extending the second rotating shaft 1 axially.
The first transmission structure 4 and the second transmission structure 2 are formed by axial extension of the shaft where the first transmission structure and the second transmission structure are located, the structural stability is good, and the damping piece 5 is guaranteed to be only stressed by pressure.
Fig. 11 shows an embodiment in which the first transmission arrangement 4 and the second transmission arrangement 2 are formed radially along the axis in which they are located.
The invention provides a rotating device for an electric appliance, which comprises a motor 7 and the rotating force transmission device, wherein a transmission shaft of the motor 7 forms a first rotating shaft 3.
As shown in fig. 1 to 7, embodiment 1 of the present invention provides a wind wheel device, including a wind wheel body 8 and the above-mentioned electric rotating device, where the wind wheel body 8 is connected to the second rotating shaft 1 and can rotate with the second rotating shaft 1.
As an alternative embodiment, the second transmission structure 2 is positioned at the end part of the second rotating shaft 1, and the structure is simple.
As an alternative embodiment, the first shaft 3 comprises a main body segment and a straight rod segment, the first transmission 4 being located at the end of the main body segment.
As an alternative embodiment, the end of the first transmission structure 4 is provided with at least one first protrusion 42 and a first recess 41, correspondingly, the end of the second transmission structure 2 is provided with at least one second recess 22 and a second protrusion 21, the first protrusion 42 is adapted to the second recess 22, and the second protrusion 21 is adapted to the first recess 41.
At least one first protrusion 42 and one first groove 41 on the first transmission structure 4 are meshed with at least one second groove 22 and one second protrusion 21 on the second transmission structure 2, so that the connection is reliable, and the transmission is stable.
As shown in fig. 12 to 14, embodiment 2 of the present invention provides a wind turbine apparatus, and embodiment 2 is different from embodiment 1 in that a second transmission structure 2 is detachably fixed to a second rotating shaft 1.
At this time, a transmission shaft of the motor 7 serves as the first rotating shaft 3, and a rotating shaft of the wind wheel body 8 serves as the second rotating shaft 1. The straight rod part of the transmission shaft of the motor 7 and the bulge or groove structure at the end part of the rotating shaft of the wind wheel body 8 are cancelled, a bearing 11 is fixed at the through hole of the air duct 12, and a rotatable transmission rod 10 is arranged in the middle of the bearing 11. The transmission rod 10 has two parts, one part has a groove or a convex structure which can be engaged with the convex or the groove at the end of the transmission shaft of the motor 7, the other part is a straight rod which can be penetrated into the wind wheel with a through hole, and the wind wheel body 8 is fixed on the transmission rod 10 through a knob 9. This solution is equivalent to transferring the straight rod of the motor 7 and the protrusion or groove feature at the end of the wind wheel body 8 in embodiment 1 to a new part, and fixing the new part on the wind channel 12 for isolating the motor 7 and the wind wheel body 8. The advantage of this kind of scheme lies in, and motor 7 can keep apart with the wind wheel completely, and the shock attenuation effect can be better.
In the above embodiment, the shapes of the two joint surfaces of the damper 5 are respectively matched to the shapes of the joint surface of the first transmission structure 4 and the joint surface of the second transmission structure 2.
As an alternative embodiment, the damping element 5 is fixedly arranged on the first transmission structure 4 and/or the second transmission structure 2.
As an alternative embodiment, the damping member 5 is a shock absorbing material, which is coated or injected at the joint surface of the first transmission structure 4 and/or the joint surface of the second transmission structure 2.
The damping piece 5 is compounded on the first transmission structure 4 and/or the second transmission structure 2, the laminating effect of the transmission structure and the damping piece 5 is good, and the damping effect is good.
As an alternative embodiment, the damping member 5 is a flexible damping ring arranged between the first transmission structure 4 and the second transmission structure 2.
As an alternative embodiment, a first side of the flexible damping ring is clamped or bonded to the joint surface of the first transmission structure 4, and a second side of the flexible damping ring is clamped or bonded to the joint surface of the second transmission structure 2.
The damping piece 5 adopts independent parts, is convenient to replace and maintain and is easy to produce and process.
As shown in fig. 15 to 17, the present invention provides a range hood, which adopts the wind wheel device in embodiment 1.
The motor 7 is provided with a first rotating shaft 3 as a transmission shaft, the transmission shaft is provided with at least two parts, one part of the end part is provided with a first transmission structure 4, the structure comprises at least one convex or concave groove structure, and the other part is a straight rod.
The wind wheel is provided with a second rotating shaft 1, the rotating shaft is provided with at least two parts, one part of the end part is provided with at least one groove or bulge structure, the groove or bulge structure can be meshed with the bulge or groove structure at the shaft end part of the transmission shaft of the motor 7, and the bulge or groove structure is covered with flexible damping material, such as rubber; the other part is a rod with a through hole.
The air duct 12 has a through hole and a cavity for accommodating the wind wheel device. The motor 7 is installed on the air duct 12, and the transmission rotating shaft of the motor 7 passes through the through hole on the air duct 12 and enters the cavity of the air duct 12. The straight rod passes through a rod with a through hole on the wind wheel body 8 and is fixed by a knob 9.
When the wind wheel body 8 and the motor 7 are installed together through the knob 9 in a matched mode, the motor 7 can drive the wind wheel to operate through the protruding or groove structure at the end portion of the transmission shaft. When the motor 7 body generates vibration noise due to operation, the energy of the vibration and the noise can be isolated or reduced due to the flexible damping material between the motor 7 and the occlusal surface of the wind wheel, so that the vibration and the noise can not be conducted or are less conducted to the wind wheel, and the generation of resonance noise can be avoided or reduced.
According to the rotating force transmission device, the rotating device for the electric appliance, the wind wheel device and the range hood, the damping piece 5 between the first transmission structure 4 and the second transmission structure 2 is in transmission connection with the first rotating shaft 3 and the second rotating shaft 1 in a pressure-bearing mode, so that the situation that the damping piece 5 is easily damaged by shearing force is avoided, meanwhile, vibration is effectively reduced by the damping piece 5, transmission between the first rotating shaft 3 and the second rotating shaft 1 is stable, and the generation of resonance noise is avoided or reduced.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (13)
1. A turning force transmission device, comprising a first rotation shaft (3), a second rotation shaft (1) and a damping member (5), wherein: a first transmission structure (4) is arranged on the first rotating shaft (3), a second transmission structure (2) is arranged on the second rotating shaft (1), the damping piece (5) is arranged between the first transmission structure (4) and the second transmission structure (2), and in the rotating process of the first rotating shaft (3), the first transmission structure (4) can drive the second transmission structure (2) through the damping piece (5) in a manner of applying pressure stress to the damping piece (5) and drive the second rotating shaft (1) to rotate through the second transmission structure (2);
the first transmission structure (4) and the second transmission structure (2) are provided with adaptive concave-convex structures; and the first transmission structure (4) is formed by axially extending the first rotating shaft (3), and the second transmission structure (2) is formed by axially extending the second rotating shaft (1).
2. The turning force transmission according to claim 1, characterized in that the second transmission structure (2) is located at the end of the second shaft (1).
3. The turning force transmission according to claim 2, characterized in that the first turning shaft (3) comprises a body section and a straight rod section, the first transmission structure (4) being located at the end of the body section.
4. The turning force transmission according to claim 1, characterized in that the end of the first transmission structure (4) is provided with at least one first protrusion (42) and/or first recess (41), correspondingly the end of the second transmission structure (2) is provided with at least one second recess (22) and/or second protrusion (21), the first protrusion (42) fitting into the second recess (22), the second protrusion (21) fitting into the first recess (41).
5. The turning force transmission device according to claim 1, characterized in that the second transmission structure (2) is detachably fixed to the second turning shaft (1).
6. The turning force transmission according to claim 1, characterized in that the shape of the two engaging surfaces of the damping member (5) is adapted to the shape of the engaging surfaces of the first transmission structure (4) and the second transmission structure (2), respectively.
7. The turning force transmission according to any of the claims 1-6, characterized in that the damping member (5) is fixedly arranged on the first transmission structure (4) and/or the second transmission structure (2).
8. The turning force transmission device according to claim 7, characterized in that the damping member (5) is a shock absorbing material which is coated or injected at the joint surface of the first transmission structure (4) and/or the joint surface of the second transmission structure (2).
9. A torque transmission according to any of claims 1-6, characterized in that the damping member (5) is a flexible shock absorbing ring arranged between the first transmission structure (4) and the second transmission structure (2).
10. The turning force transmission device according to claim 9, characterized in that a first side of the flexible damping ring is snapped or glued to the joint surface of the first transmission structure (4) and a second side of the flexible damping ring is snapped or glued to the joint surface of the second transmission structure (2).
11. A rotating device for an electric appliance, characterized by comprising an electric motor (7) and a turning force transmission device according to any of claims 1-10, the transmission shaft of the electric motor (7) forming the first rotation shaft (3).
12. A wind wheel device, characterized in that it comprises a wind wheel body (8) and a rotating device for electrical appliances according to claim 11, the wind wheel body (8) is connected to the second rotating shaft (1) and can rotate with the second rotating shaft (1).
13. A range hood comprising the wind wheel apparatus of claim 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810722473.0A CN108679674B (en) | 2018-07-02 | 2018-07-02 | Rotating force transmission device, rotating device for electrical appliance, wind wheel device and range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810722473.0A CN108679674B (en) | 2018-07-02 | 2018-07-02 | Rotating force transmission device, rotating device for electrical appliance, wind wheel device and range hood |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108679674A CN108679674A (en) | 2018-10-19 |
| CN108679674B true CN108679674B (en) | 2023-03-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810722473.0A Active CN108679674B (en) | 2018-07-02 | 2018-07-02 | Rotating force transmission device, rotating device for electrical appliance, wind wheel device and range hood |
Country Status (1)
| Country | Link |
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| CN (1) | CN108679674B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2485562Y (en) * | 2001-05-07 | 2002-04-10 | 宁波方太厨具有限公司 | Structure of low-noise cooker hood |
| CN2708016Y (en) * | 2004-07-14 | 2005-07-06 | 吴伟彬 | Electric ventilation fan |
| CN201090507Y (en) * | 2007-09-17 | 2008-07-23 | 苏州三星电子有限公司 | Air conditioner wind blade component |
| CN203584892U (en) * | 2013-10-31 | 2014-05-07 | 浙江亿利达风机股份有限公司 | Middle disk mechanism of coil pipe fan |
| JP2015124712A (en) * | 2013-12-26 | 2015-07-06 | 三菱電機株式会社 | Air blower |
| CN205559322U (en) * | 2016-03-16 | 2016-09-07 | 孙剑云 | Keep off sandbox mine gas transportation pipeline |
| CN207247548U (en) * | 2017-09-29 | 2018-04-17 | 宁波宝工电器有限公司 | A kind of warm-air drier of low noise |
| CN208652652U (en) * | 2018-07-02 | 2019-03-26 | 珠海格力电器股份有限公司 | Rotating force transmission device, rotating device for electrical appliance, wind wheel device and range hood |
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2018
- 2018-07-02 CN CN201810722473.0A patent/CN108679674B/en active Active
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| CN108679674A (en) | 2018-10-19 |
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