阅读说明：本技术 电机及吸尘器 (Motor and dust catcher ) 是由 肖胜宇 唐林 朱绍轩 陈彬 孙伟力 杨国蟒 王金龙 张志东 于 2019-11-18 设计创作，主要内容包括：本发明提供了一种电机及吸尘器,电机包括：机壳(10)和扩压器(20),机壳(10)的内壁上设有支撑结构(11),扩压器(20)通过紧固件(30)固定在支撑结构(11)上。本发明的技术方案将扩压器可靠地固定在机壳上,提高了扩压器与机壳的配合精度,提升电机空气性能,降低电机振动、噪音。(The invention provides a motor and a dust collector, wherein the motor comprises: the air conditioner comprises a machine shell (10) and a diffuser (20), wherein a supporting structure (11) is arranged on the inner wall of the machine shell (10), and the diffuser (20) is fixed on the supporting structure (11) through a fastening piece (30). According to the technical scheme, the diffuser is reliably fixed on the casing, the matching precision of the diffuser and the casing is improved, the air performance of the motor is improved, and the vibration and noise of the motor are reduced.)

1. An electric machine comprising: casing (10) and diffuser (20), characterized by, be equipped with bearing structure (11) on the inner wall of casing (10), diffuser (20) are fixed through fastener (30) on bearing structure (11).

2. The electrical machine according to claim 1, wherein the fastening member (30) is a screw, the diffuser (20) is provided with a first mounting hole (21) for engaging with the screw, and the support structure (11) is provided with a second mounting hole (111) for engaging with the screw.

3. The machine according to claim 2, characterized in that a damping member (40) is provided between the diffuser (20) and the support structure (11), said damping member (40) being provided with a third mounting hole (41) for the screw to engage.

4. The motor according to claim 3, wherein a positioning groove (22) is formed in a side of the diffuser (20) facing the damper (40), a positioning protrusion (42) engaged with the positioning groove (22) is formed in a side of the damper (40) facing the diffuser (20), the first mounting hole (21) is located in the positioning groove (22), and the third mounting hole (41) is located on the positioning protrusion (42).

5. The electric machine according to claim 4, wherein the height of the positioning protrusion (42) is greater than or equal to the depth of the positioning groove (22), and the length of the positioning protrusion (42) in the circumferential direction of the damper (40) is less than or equal to the length of the positioning groove (22) in the circumferential direction of the diffuser (20).

6. The electric machine according to claim 5, characterized in that the positioning groove (22) has a length in the circumferential direction of the diffuser (20) that is smaller than its length in the radial direction of the diffuser (20).

7. The electrical machine according to claim 6, wherein the positioning groove (22) has a length in the circumferential direction of the diffuser (20) that is less than 0.4 times its length in the radial direction of the diffuser (20).

8. The machine according to claim 3, wherein the second mounting hole (111) is a blind hole, the screw is a self-tapping screw, the diameter of the first mounting hole (21) is D1, the diameter of the second mounting hole (111) is D2, the diameter of the third mounting hole (41) is D3, the diameter of the screw rod of the screw is D4, wherein D2> D4> D1> D3.

9. The machine according to claim 1, wherein the inner diameter of the first end of the housing (10) decreases from the outside to the inside along its axis, the support structure (11) is arranged on the inner wall of the first end of the housing (10), the inner face (112) of the support structure (11) extends gradually from the outside to the inside to the smallest inner diameter of the first end of the housing (10), and the angle between the inner face (112) of the support structure (11) and the end face (113) of the support structure (11) is a right angle or an obtuse angle.

10. A vacuum cleaner comprising an electric motor, characterized in that the electric motor is an electric motor according to any one of claims 1 to 9.

Technical Field

The invention relates to the technical field of dust collection equipment, in particular to a motor and a dust collector.

Background

At present, the motor includes the casing and sets up the diffuser in the casing, and the diffuser cooperates through rubber coating or buckle mode and casing, and buckle, rubber coating mode itself are stable inadequately, lead to the diffuser to rock because of fluid impact probably appears at the motor in-process, cause motor vibration and produce the noise. Simultaneously, because buckle casting forming process and rubber coating process level restriction, its dimensional accuracy is lower, and the subassembly precision that the combination formed is not high enough, except that influence the air behavior still can further make the noise condition worsen.

Disclosure of Invention

The invention mainly aims to provide a motor and a dust collector, and aims to solve the problem that vibration and noise of the motor are easily generated when a diffuser and a shell are fixed in a gluing or buckling mode in the prior art.

To achieve the above object, the present invention provides a motor including: the diffuser is fixed on the supporting structure through a fastener.

Furthermore, the fastener is a screw, a first mounting hole matched with the screw is formed in the diffuser, and a second mounting hole matched with the screw is formed in the supporting structure.

Furthermore, a damping piece is arranged between the diffuser and the supporting structure, and a third mounting hole matched with a screw is formed in the damping piece.

Furthermore, one side of the diffuser, which faces the damping piece, is provided with a positioning groove, one side of the damping piece, which faces the diffuser, is provided with a positioning bulge matched with the positioning groove, the first mounting hole is positioned in the positioning groove, and the third mounting hole is positioned on the positioning bulge.

Furthermore, the height of the positioning protrusion is larger than or equal to the depth of the positioning groove, and the length of the positioning protrusion along the circumferential direction of the damping piece is smaller than or equal to the length of the positioning groove along the circumferential direction of the diffuser.

Further, the length of the positioning groove in the circumferential direction of the diffuser is smaller than the length thereof in the radial direction of the diffuser.

Further, the length of the positioning groove in the circumferential direction of the diffuser is less than 0.4 times the length thereof in the radial direction of the diffuser.

Further, the second mounting hole is a blind hole, the screw is a self-tapping screw, the diameter of the first mounting hole is D1, the diameter of the second mounting hole is D2, the diameter of the third mounting hole is D3, and the diameter of the screw is D4, wherein D2> D4> D1> D3.

Further, the inner diameter of the first end of the casing is reduced from outside to inside along the axis of the first end of the casing, the supporting structure is arranged on the inner wall of the first end of the casing, the inner face of the supporting structure gradually extends to the position of the minimum inner diameter of the first end of the casing from outside to inside, and an included angle between the inner face of the supporting structure and the end face of the supporting structure is a right angle or an obtuse angle.

The invention also provides a dust collector which comprises the motor.

The technical scheme of the invention has the following advantages: the diffuser passes through the fastener to be fixed on bearing structure, and the fixed mode of fastener is more firm reliable, can fix the diffuser on the casing reliably to fix a position diffuser and casing through the fastener, improved the cooperation precision of diffuser and casing, promote motor air performance, reduce motor vibration, noise. Moreover, the supporting structure can enhance the structural strength of the casing, is favorable for improving the stability of the whole structure of the motor, and can also reduce the processing difficulty of the casing.

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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 illustrates a schematic view, partially in section, of an electric machine provided by the present invention;

fig. 2 shows a schematic perspective view of a housing of the electric machine of fig. 1;

FIG. 3 shows a partial cross-sectional schematic view of the enclosure of FIG. 2;

FIG. 4 shows a perspective schematic view of a diffuser of the motor of FIG. 1;

FIG. 5 shows an enlarged schematic view at A of the diffuser of FIG. 4;

fig. 6 shows a perspective view of the damper of the motor of fig. 1.

Description of reference numerals:

10. a housing; 11. a support structure; 111. a second mounting hole; 112. an inner face; 113. an end face; 20. a diffuser; 21. a first mounting hole; 22. a positioning groove; 30. a fastener; 40. a shock absorbing member; 41. a third mounting hole; 42. and a positioning projection.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 and 2, the motor of the present embodiment includes: the diffuser-type air conditioner comprises a casing 10 and a diffuser 20, wherein a supporting structure 11 is arranged on the inner wall of the casing 10, and the diffuser 20 is fixed on the supporting structure 11 through a fastening piece 30.

The motor of this embodiment is used, diffuser 20 passes through fastener 30 to be fixed on bearing structure 11, and the fixed mode of fastener is more firm reliable, can fix the diffuser on the casing reliably to fix a position diffuser and casing through the fastener, improved the cooperation precision of diffuser and casing, promote motor air performance, reduce motor vibration, noise. Moreover, the supporting structure 11 can enhance the structural strength of the casing, thereby being beneficial to improving the stability of the overall structure of the motor and reducing the processing difficulty of the casing.

In this embodiment, as shown in fig. 2 and 4, the fastening member 30 is a screw, the diffuser 20 is provided with a first mounting hole 21 engaged with the screw, and the supporting structure 11 is provided with a second mounting hole 111 engaged with the screw, so that the screw is convenient to use, low in cost, and high in mounting accuracy.

In the present embodiment, as shown in fig. 1 and 5, a damper 40 is disposed between the diffuser 20 and the support structure 11, a third mounting hole 41 for screw engagement is formed in the damper 40, and damping between the diffuser and the casing is performed through the damper 40. Specifically, the shock absorbing member 40 is a rubber mat which is convenient to use and reduces the cost of parts.

In the present embodiment, as shown in fig. 4 to 6, a positioning groove 22 is formed on a side of the diffuser 20 facing the damper 40, a positioning protrusion 42 engaged with the positioning groove 22 is formed on a side of the damper 40 facing the diffuser 20, the first mounting hole 21 is located in the positioning groove 22, and the third mounting hole 41 is located on the positioning protrusion 42. The positioning groove 22 and the positioning protrusion 42 play a positioning role, so that the assembly is convenient, and the assembly efficiency is improved. Specifically, positioning groove 22 and location arch 42 all are equipped with a plurality ofly, a plurality of positioning groove 22 along diffuser 20's circumference evenly distributed and with a plurality of location arch 42 one-to-one cooperation, bearing structure 11 also is equipped with a plurality ofly this moment, can reduce the technology degree of difficulty, shorten the processing man-hour to the diffuser is fixed to a plurality of bearing structure, and is fixed more stable. Preferably, there are three positioning recesses 22, three positioning projections 42 and three support structures 11. Of course, the number of the positioning grooves, the positioning protrusions and the supporting structures is not limited to this, and needs to be adjusted according to specific situations.

In the present embodiment, the height e of the positioning protrusion 42 is greater than or equal to the depth of the positioning groove 22, and the length c of the positioning protrusion 42 along the circumferential direction of the damper 40 is less than or equal to the length a of the positioning groove 22 along the circumferential direction of the diffuser 20, so that the assembly is facilitated.

Since the length a of the positioning groove 22 in the circumferential direction of the diffuser 20 may occupy the space of the flow area, in order to ensure the air performance of the motor, in the present embodiment, the length a of the positioning groove 22 in the circumferential direction of the diffuser 20 is smaller than the length b thereof in the radial direction of the diffuser 20. Specifically, the length of the positioning groove 22 in the circumferential direction of the diffuser 20 is less than 0.4 times the length thereof in the radial direction of the diffuser 20.

In this embodiment, as shown in fig. 2, 4 and 5, the second mounting hole 111 is a blind hole, the screw is a self-tapping screw, the diameter of the first mounting hole 21 is D1, the diameter of the second mounting hole 111 is D2, the diameter of the third mounting hole 41 is D3, and the diameter of the screw rod of the screw is D4, where D2> D4> D1> D3 can ensure that the fixation between the diffuser and the housing is more stable, which is beneficial to improving the stability of the overall structure of the motor. And the height of the surface of the diffuser, which is far away from the shell, is adjusted by adjusting the tightness of the tapping screw, so that the matching precision is improved. The second mounting hole 111 plays a role in positioning, and assembly accuracy is improved. Of course, the screw may be a common screw, and is not limited thereto.

In the present embodiment, as shown in fig. 3, the inner diameter of the first end of the casing 10 decreases from outside to inside along the axis thereof, the supporting structure 11 is disposed on the inner wall of the first end of the casing 10, the inner surface 112 of the supporting structure 11 gradually extends from outside to inside to the minimum inner diameter of the first end of the casing 10, and the included angle between the inner surface 112 of the supporting structure 11 and the end surface 113 of the supporting structure 11 is a right angle (as shown by a solid line in fig. 3) or an obtuse angle (as shown by a dotted line in fig. 3), which satisfies the process requirements.

The invention also provides a dust collector which comprises the motor.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

install the cushion between diffuser and the casing, the three passes through self-tapping screw fixed, can fix the diffuser on the casing reliably, and is fixed more stable, is favorable to promoting motor overall structure's stability, has still promoted the cooperation precision, alleviates simultaneously because the diffuser vibration that fluid irregular motion caused, reduces the motor noise, improves the whole air performance of motor.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.