CN220816223U - Fixing device for motor and impeller - Google Patents
Fixing device for motor and impeller Download PDFInfo
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- CN220816223U CN220816223U CN202322337224.9U CN202322337224U CN220816223U CN 220816223 U CN220816223 U CN 220816223U CN 202322337224 U CN202322337224 U CN 202322337224U CN 220816223 U CN220816223 U CN 220816223U
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- 239000002184 metal Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000007769 metal material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The application relates to a fixing device of a motor and an impeller, which comprises a hand-tightening nut, wherein an embedded nut component is arranged in the hand-tightening nut, the embedded nut component comprises an upper section nut, a middle section elastic part and a lower section nut which are sequentially connected, the lower section nut, the middle section elastic part and the upper section nut are sequentially sleeved on a motor shaft along the direction away from the motor, and the lower section nut is fixedly connected with the hand-tightening nut; the inner side wall of the upper section nut and the inner side wall of the lower section nut are respectively provided with threads, the upper section nut and the lower section nut can move along the axial direction of the motor shaft, a preset gap exists between the middle section elastic part and the inner side wall of the hand-tightening nut, and the lower section nut can drive the middle section elastic part to stretch out and draw back in the direction perpendicular to the axial direction.
Description
Technical Field
The application relates to the technical field of range hoods, in particular to a fixing device for a motor and an impeller.
Background
The range hood is an electrical appliance which is necessary for people to cook and absorb cooking fume in daily life, a motor in the traditional range hood is connected with an impeller through an impeller hub, and then the motor is screwed down by tightening a nut by hand, but after the range hood is used for a period of time, the impeller is stained with greasy dirt, so that the dynamic balance of the impeller is poor, meanwhile, the reliability of nut connection is affected due to vibration of the range hood, even the nut loosens or falls off, and particularly the range hood with a positive and negative rotation cleaning function is more prone to loosening.
Disclosure of utility model
In order to solve the technical problem that nuts are easy to loosen or fall off in the prior art, the application provides a technical scheme of a fixing device of a motor and an impeller, namely, a middle section elastic part is arranged between an upper section nut and a lower section nut, so that the middle section elastic part stretches towards a direction vertical to an axial direction in a screwing process, and the upper section nut and the lower section nut are mutually restricted, so that a good anti-loosening effect is realized under the condition of not adding any anti-loosening device.
The application provides a fixing device of a motor and an impeller, wherein a central hole of the impeller is sleeved on a motor shaft of the motor and comprises a hand-tightening nut;
The hand tightening nut is internally provided with an embedded nut component, the embedded nut component comprises an upper section nut, a middle section elastic part and a lower section nut which are sequentially connected, the lower section nut, the middle section elastic part and the upper section nut are sequentially sleeved on the motor shaft along the direction away from the motor, and the lower section nut is fixedly connected with the hand tightening nut;
The inner side wall of the upper section nut and the inner side wall of the lower section nut are respectively provided with threads, the upper section nut and the lower section nut can move along the axial direction of the motor shaft, a preset gap exists between the middle section elastic part and the inner side wall of the hand-tightening nut, and the lower section nut can drive the middle section elastic part to stretch and retract in the direction perpendicular to the axial direction.
Further, a plurality of protrusions are arranged on the outer side wall of the lower section nut, a plurality of protrusion matching parts are arranged on the inner side wall of the hand-tightening nut, a plurality of protrusions are respectively embedded in the protrusion matching parts in a corresponding mode, and therefore the hand-tightening nut drives the lower section nut to move along the axial direction of the motor shaft through the protrusion matching parts.
Further, the outer side wall of the upper section nut is in sliding connection with the inner side wall of the hand tightening nut.
Further, the outer diameter of the upper nut is smaller than the inner diameter of the hand tightening nut.
Further, the middle section elastic part is of a thin-wall structure protruding outwards.
Further, the upper nut, the middle elastic part and the lower nut are of an integral structure.
Further, the outer diameter of the upper section nut and the outer diameter of the lower section nut are both larger than the outer diameter of the middle section elastic part.
Further, two rows of protrusions are arranged on the outer side wall of the lower section nut, two rows of protrusion matching parts are arranged on the inner side wall of the hand-tightening nut, and the protrusions are correspondingly embedded in the protrusion matching parts.
Further, the upper section nut, the middle section elastic part and the lower section nut are all made of metal materials.
Further, the hand tightening nut is a metal die casting or a plastic piece.
The implementation of the application has the following beneficial effects:
The application relates to a fixing device of a motor and an impeller, which comprises a hand-tightening nut, wherein an embedded nut component is arranged in the hand-tightening nut, the embedded nut component comprises an upper section nut, a middle section elastic part and a lower section nut which are sequentially connected, the lower section nut, the middle section elastic part and the upper section nut are sequentially sleeved on a motor shaft along the direction away from the motor, and the lower section nut is fixedly connected with the hand-tightening nut; the inner side wall of the upper section nut and the inner side wall of the lower section nut are respectively provided with threads, the upper section nut and the lower section nut can move along the axial direction of the motor shaft, a preset gap exists between the middle section elastic part and the inner side wall of the hand-tightening nut, and the lower section nut can drive the middle section elastic part to stretch out and draw back in the direction perpendicular to the axial direction.
Drawings
In order to more clearly illustrate the technical solution of the present application, the following description will make a brief introduction to the drawings used in the description of the embodiments or the prior art. It should be apparent that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained from these drawings without inventive effort to those of ordinary skill in the art.
Fig. 1 is a schematic diagram of a partial structure of a range hood according to an embodiment of the present application;
Fig. 2 is a schematic structural diagram of a fixing device for a motor and an impeller according to an embodiment of the present application;
FIG. 3 is a cross-sectional view of a motor and impeller fixing device provided by an embodiment of the present application;
Fig. 4 is a schematic structural view of an embedded nut assembly according to an embodiment of the present application;
Wherein, the reference numerals in the figures correspond to: 1-a motor; 11-a motor shaft; 2-an impeller; 3-tightening the nut by hand; 4-an embedded nut assembly; 41-upper section nut; 42-a middle section elastic section; 43-lower section nut; 431-bump; 5-range hood.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that, in the present application, unless explicitly specified and limited otherwise, terms such as "mounted," "connected," "fixed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may communicate with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
The embodiments are described below with reference to the accompanying drawings, which do not limit the disclosure recited in the claims.
Referring to fig. 1-4, a motor and impeller fixing device according to an embodiment of the present application is described in detail below with reference to fig. 1-4.
The embodiment of the application provides a fixing device for a motor and an impeller, wherein a center hole of the impeller 2 is sleeved on a motor shaft 11 of the motor 1 and comprises a hand-tightening nut 3.
The hand tightening nut 3 is provided with an embedded nut component 4, the embedded nut component 4 comprises an upper section nut 41, a middle section elastic part 42 and a lower section nut 43 which are sequentially connected, the lower section nut 43, the middle section elastic part 42 and the upper section nut 41 are sequentially sleeved on the motor shaft 11 along the direction away from the motor 1, and the lower section nut 43 is fixedly connected with the hand tightening nut 3; the inner side wall of the upper section nut 41 and the inner side wall of the lower section nut 43 are respectively provided with threads, the upper section nut 41 and the lower section nut 43 can move along the axial direction of the motor shaft 11, a preset gap exists between the middle section elastic part 42 and the inner side wall of the hand-tightening nut 3, and the lower section nut 43 can drive the middle section elastic part 42 to stretch and retract in the direction perpendicular to the axial direction.
In the embodiment of the application, the center hole of the impeller 2 is sleeved between the motor 1 and the fixing device, so that the fixing device is used for fixing the motor 1 and the impeller 2, the embedded nut component 4 is embedded on the non-operation side of the hand-tightening nut 3, wherein the non-operation side is the side opposite to the operation side in the hand-tightening nut 3, the operation side is the side which can be screwed or disassembled by hand, and specifically, the embedded nut component 4 is embedded at the position which can be seen in fig. 2 and 3, and the embedded nut component 4 with the anti-falling function is embedded on the non-operation side of the hand-tightening nut 3, so that the quick disassembly or screwing of the fixing device can be realized under the condition that no special tool is available for a user.
In a specific embodiment, the middle section elastic part 42 is disposed between the upper section nut 41 and the lower section nut 43, and two ends of the middle section elastic part 42 are fixedly connected with the upper section nut 41 and the lower section nut 43 respectively, so that the middle section elastic part 42 can stretch in a direction perpendicular to the axial direction in the screwing process, so that the upper section nut 41 and the lower section nut 43 are mutually restricted, and a good anti-loosening effect is achieved without adding any anti-loosening device.
In practical applications, the motor shaft 11 is provided with threads for matching with threads on the inner side wall of the upper section nut 41 and threads on the inner side wall of the lower section nut 43, so that the upper section nut 41 and the lower section nut 43 can move along the axial direction of the motor shaft 11, the inner side wall of the middle section elastic portion 42 is not threaded, and the middle section elastic portion 42 can stretch and retract in the direction perpendicular to the axial direction of the motor shaft 11, so that when the upper section nut 41 and the lower section nut 43 are driven by tightening the nut 3 along the axial direction of the motor shaft 11, the middle section elastic portion 42 stretches and deforms under the action of axial tension, so that a phase difference is formed between the upper section nut 41 and the lower section nut 43 due to the stretch and deformation of the middle section elastic portion 42 along the axial direction, that is, under the action of the middle section elastic portion 42, the upper section nut 41 and the lower section nut 43 can be prevented from being mutually restricted, so that good effects can be achieved without increasing any anti-loosening devices such as elastic pads or pins.
In one embodiment, the middle resilient portion 42 may be made of a metal material, and preferably, the middle resilient portion 42 may be made of a metal material having elasticity.
It should be noted that, in the present application, the impeller 2 and the motor 1 are both components disposed in the range hood 5, and the specific structures of the impeller 2 and the range hood 5 may be seen in fig. 1.
In an alternative embodiment, a plurality of protrusions 431 are provided on the outer sidewall of the lower nut 43, a plurality of protrusion engaging portions are provided on the inner sidewall of the hand tightening nut 3, and the plurality of protrusions 431 are respectively and correspondingly embedded in the plurality of protrusion engaging portions, so that the hand tightening nut 3 drives the lower nut 43 to move along the axial direction of the motor shaft 11 through the protrusion engaging portions.
In the embodiment of the present application, the protrusion 431 is an outwardly protruding structure, where the protrusion 431 may be a rectangular protrusion, or may be a cylindrical protrusion, a trapezoidal protrusion, or the like, and preferably, the protrusion 431 is a rectangular protrusion, and the plurality of protrusions 431 are uniformly arranged on the outer side wall of the lower nut 43 and fixedly connected with the outer side wall of the lower nut 43, and the protrusion 431 may be embedded in a protrusion matching portion, so that the hand-tightening nut 3 drives the lower nut 43 to move along the axial direction of the motor shaft 11 through the protrusion matching portion.
In one embodiment, the protrusion 431 is integral with the lower nut 43.
In an alternative embodiment, two rows of protrusions 431 are provided on the outer sidewall of the lower nut 43, and two rows of protrusion engaging portions are provided on the inner sidewall of the hand nut 3, and the protrusions 431 are correspondingly embedded in the protrusion engaging portions.
In the embodiment of the present application, as shown in fig. 4, two rows of protrusions 431 are disposed on the outer side wall of the lower nut 43, and the axial distances between the two rows of protrusions 431 are equal, that is, the two rows of protrusions 431 are in a parallel relationship with each other, in a specific embodiment, multiple rows of protrusions 431 may be disposed on the outer side wall of the lower nut 43, and, for example, three rows of protrusions 431, four rows of protrusions 431, or five rows of protrusions 431 may be disposed on the outer side wall of the lower nut 43, which is not limited herein specifically.
In an alternative embodiment, the outer sidewall of the upper nut 41 is slidably connected to the inner sidewall of the hand tightening nut 3.
In the embodiment of the application, since the outer side wall of the upper section nut 41 is slidably connected with the inner side wall of the hand tightening nut 3, the upper section nut 41 is movable relative to the hand tightening nut 3 in the tightening process, so that the middle section elastic part 42 acts on the upper section nut 41 along the axial expansion deformation, a phase difference is formed between the upper section nut 41 and the lower section nut 43, and the anti-loosening effect of the fixing device can be further realized.
In a specific embodiment, the section of the upper nut 41 in the radial direction is circular, threads are arranged on the inner side wall of the upper nut 41, the upper nut 41 can move along the axial direction of the motor shaft 11, the outer side wall of the upper nut 41 is slidably connected with the inner side wall of the hand tightening nut 3, so that the upper nut 41 can move relative to the hand tightening nut 3 under the action of the expansion and contraction deformation of the middle elastic part 42 along the axial direction, and further, the displacement amounts of the upper nut 41 and the lower nut 43 in the axial direction of the motor shaft 11 are different, so that the anti-loosening capability of the fixing device can be enhanced.
In an alternative embodiment, the outside diameter of the upper nut 41 is smaller than the inside diameter of the hand tightening nut 3.
In the embodiment of the application, the outer diameter of the upper nut 41 is smaller than the inner diameter of the hand tightening nut 3, so that the upper nut 41 can move relative to the hand tightening nut 3, and in the process of moving the upper nut 41 up and down, the outer diameter of the upper nut 41 is smaller than the inner diameter of the hand tightening nut 3, so that the upper nut 41 does not damage the inner side wall of the hand tightening nut 3, thereby prolonging the service life of the fixing device.
In an alternative embodiment, the middle spring 42 is an outwardly projecting thin wall structure.
In the embodiment of the present application, referring to fig. 4, as shown in fig. 4, the middle elastic portion 42 is of an outwardly protruding thin-wall structure, it can be understood that the cross-sectional lengths of the upper and lower ends of the middle elastic portion 42 in the direction perpendicular to the axial direction are smaller than the cross-sectional length of the middle elastic portion 42 in the direction perpendicular to the axial direction, further, the thickness of the middle elastic portion 42 is smaller than the thickness of the upper nut 41, and meanwhile, the thickness of the middle elastic portion 42 is also smaller than the thickness of the lower nut 43, so that the lower nut 43 drives the middle elastic portion 42 to stretch in the direction perpendicular to the axial direction, so that the middle elastic portion 42 can provide an axial anti-loosening pre-tightening force for the upper nut 41 and the lower nut 43, thereby achieving an anti-loosening effect.
In an alternative embodiment, the upper nut 41, the middle elastic portion 42, and the lower nut 43 are of a unitary construction.
In the embodiment of the application, the upper section nut 41, the middle section elastic part 42 and the lower section nut 43 are arranged into an integral structure so as to enhance the stability of the upper section nut 41, the middle section elastic part 42 and the lower section nut 43, so that the embedded nut assembly 4 has better integrity, and meanwhile, the manufacturing flow of the upper section nut 41, the middle section elastic part 42 and the lower section nut 43 can be simplified, and the production cost of the fixing device is reduced.
In an alternative embodiment, the outside diameter of the upper section nut 41 and the outside diameter of the lower section nut 43 are both larger than the outside diameter of the middle section elastic portion 42.
In the embodiment of the present application, the outer diameter of the upper nut 41 may be equal to the outer diameter of the lower nut 43, or may be smaller than the outer diameter of the lower nut 43, and the relationship between the outer diameter of the upper nut 41 and the outer diameter of the lower nut 43 is not specifically limited.
In an alternative embodiment, the upper nut 41, the middle elastic portion 42, and the lower nut 43 are all made of metal.
In the embodiment of the present application, the upper nut 41, the middle elastic portion 42 and the lower nut 43 may be made of stainless steel, alloy, carbon steel or copper.
In an alternative embodiment, the hand nut 3 is a metal die cast or plastic part.
The embodiment of the application has the following beneficial effects:
The application relates to a fixing device of a motor and an impeller, which comprises a hand-tightening nut, wherein an embedded nut component is arranged in the hand-tightening nut, the embedded nut component comprises an upper section nut, a middle section elastic part and a lower section nut which are sequentially connected, the lower section nut, the middle section elastic part and the upper section nut are sequentially sleeved on a motor shaft along the direction away from the motor, and the lower section nut is fixedly connected with the hand-tightening nut; the inner side wall of the upper section nut and the inner side wall of the lower section nut are respectively provided with threads, the upper section nut and the lower section nut can move along the axial direction of the motor shaft, a preset gap exists between the middle section elastic part and the inner side wall of the hand-tightening nut, and the lower section nut can drive the middle section elastic part to stretch out and draw back in the direction perpendicular to the axial direction.
The structures shown in this embodiment are only partial structures related to the present application and do not constitute limitations of the apparatus to which the present application is applied, and a specific apparatus may include more or less components than those shown, or may combine some components, or may have different arrangements of components. It should be understood that the methods, apparatuses, etc. disclosed in the embodiments may be implemented in other manners.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. The fixing device of the motor and the impeller is characterized in that a central hole of the impeller (2) is sleeved on a motor shaft (11) of the motor (1), and the fixing device comprises a hand-tightening nut (3);
An embedded nut component (4) is arranged in the hand-tightening nut (3), the embedded nut component (4) comprises an upper section nut (41), a middle section elastic part (42) and a lower section nut (43) which are sequentially connected, the lower section nut (43), the middle section elastic part (42) and the upper section nut (41) are sequentially sleeved on the motor shaft (11) along the direction away from the motor (1), and the lower section nut (43) is fixedly connected with the hand-tightening nut (3);
The inner side wall of the upper section nut (41) and the inner side wall of the lower section nut (43) are respectively provided with threads, the upper section nut (41) and the lower section nut (43) can move along the axial direction of the motor shaft (11), a preset gap exists between the middle section elastic part (42) and the inner side wall of the hand-tightening nut (3), and the lower section nut (43) can drive the middle section elastic part (42) to stretch and retract along the direction perpendicular to the axial direction.
2. The device according to claim 1, wherein a plurality of protrusions (431) are provided on an outer sidewall of the lower nut (43), a plurality of protrusion engaging portions are provided on an inner sidewall of the hand nut (3), and the protrusions (431) are respectively and correspondingly embedded in the protrusion engaging portions, so that the hand nut (3) drives the lower nut (43) to move along an axial direction of the motor shaft (11) through the protrusion engaging portions.
3. The device according to claim 1, characterized in that the outer side wall of the upper nut (41) is slidingly connected with the inner side wall of the tightening nut (3).
4. The device according to claim 1, characterized in that the outer diameter of the upper nut (41) is smaller than the inner diameter of the hand nut (3).
5. The device according to claim 1, wherein the intermediate resilient portion (42) is an outwardly projecting thin-walled structure.
6. A device according to claim 3, characterized in that the upper nut (41), the middle elastic part (42) and the lower nut (43) are of one-piece construction.
7. The device according to claim 1, characterized in that the outer diameter of the upper nut (41) and the outer diameter of the lower nut (43) are both greater than the outer diameter of the middle elastic portion (42).
8. The device according to claim 1, wherein two rows of protrusions (431) are provided on the outer side wall of the lower nut (43), two rows of protrusion engaging portions are provided on the inner side wall of the hand nut (3), and the protrusions (431) are correspondingly embedded in the protrusion engaging portions.
9. The device according to claim 1, wherein the upper nut (41), the middle elastic portion (42) and the lower nut (43) are all made of metal.
10. The device according to claim 1, characterized in that the hand nut (3) is a metal die cast or plastic piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322337224.9U CN220816223U (en) | 2023-08-29 | 2023-08-29 | Fixing device for motor and impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322337224.9U CN220816223U (en) | 2023-08-29 | 2023-08-29 | Fixing device for motor and impeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220816223U true CN220816223U (en) | 2024-04-19 |
Family
ID=90677243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322337224.9U Active CN220816223U (en) | 2023-08-29 | 2023-08-29 | Fixing device for motor and impeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220816223U (en) |
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2023
- 2023-08-29 CN CN202322337224.9U patent/CN220816223U/en active Active
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