CN217692925U - Vibration damping device for an electric machine - Google Patents

Abstract

The application relates to the technical field of vibration reduction, and discloses a vibration reduction device for a motor, which comprises a motor box, wherein a fixed seat is formed on the outer wall of the motor box, and a through mounting hole is formed in the fixed seat; the motor base is provided with a positioning column, and the positioning column is inserted into the mounting hole of the fixing base and is connected with the motor box in a positioning way; and the flexible sleeve is embedded in the mounting hole and sleeved on the outer wall of the positioning column so as to ensure that the fixed seat is indirectly contacted with the positioning column to reduce vibration. The positioning column on the motor base is inserted into the mounting hole on the motor box, so that the motor base and the motor box are accurately positioned when assembled, the positioning time of the motor base and the motor box is saved, and the assembly efficiency is improved; then locate between mounting hole and the reference column through flexible cover for indirect contact between fixing base and the reference column, thereby can cushion the vibration that takes place because of motor work between fixing base and the reference column, realize the purpose of damping.

Description

Vibration damping device for an electric machine

Technical Field

The present application relates to the field of vibration damping technology, and for example, to a vibration damping device for an electric machine.

Background

Under the condition of motor work, motor box and motor cabinet link together through a plurality of screw, the easy vibration of junction takes place the abnormal sound, in the correlation technique, the through-hole has been seted up at the shell border of motor box, the screw has been seted up at the mount pad in corresponding department, the screw passes the through-hole of motor box and the screw threaded connection of mount pad, the screw outer liner has a damping ring that passes the shell border through-hole of motor box, the inner wall liner of damping ring has a rigid support ring, the screw passes this rigid support ring and carries out threaded connection with the mount pad, the preforming that is located the screw afterbody compresses the damping ring promptly until preforming and support ring contact and blockked, thereby make not having had not hard up the possibility between motor box and the mount pad, thereby effectual reduction vibration and the noise that brings.

When the screw penetrates through the rigid support ring and the screw hole of the mounting seat for threaded connection, whether the rigid support ring needs to be aligned to the screw hole of the mounting seat firstly or the screw penetrates through the rigid support ring firstly, whether the screw is aligned to the screw hole or not needs to be carefully checked based on the thickness of the rigid support ring when the screw is aligned to the screw hole, and in the initial stage of threaded connection between the screw and the screw hole, the screw is easy to deviate and incline and needs to be installed again, so that the assembly efficiency is further reduced.

SUMMERY OF THE UTILITY MODEL

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides a vibration damping device for a motor, so that the assembly efficiency is improved while the vibration damping is improved.

In some embodiments, the vibration damping device for a motor includes:

the outer wall of the motor box is provided with a fixed seat, and the fixed seat is provided with a through mounting hole;

the motor base is provided with a positioning column, and the positioning column is inserted into the mounting hole of the fixing base and is connected with the motor box in a positioning way;

and the flexible sleeve is embedded in the mounting hole and sleeved on the outer wall of the positioning column so that the fixed seat is indirectly contacted with the positioning column to reduce vibration.

In some embodiments, a threaded hole is formed in the positioning column, and the fixed seat is detachably connected to the positioning column through a connecting piece;

the lower surface of the top of the connecting piece is abutted to the upper surface of the fixed seat.

In some embodiments, two opposite end surfaces of the flexible sleeve are respectively abutted to the motor base and the connecting piece, and the flexible sleeve is filled between the mounting hole and the positioning column to buffer vibration between the fixing base and the positioning column.

In some embodiments, the outer wall of the flexible sleeve is configured with a retaining groove, and the retaining base comprises:

the limiting part is formed by a structure which protrudes from the side wall of the mounting hole to the direction of the central line along the radial direction;

the limiting part is embedded in the limiting groove, so that the flexible sleeve is connected with the fixing seat.

In some embodiments, the fixing base is provided with a notch communicating with the mounting hole on a side wall of the mounting hole, so that the flexible sleeve and the fixing base and the flexible sleeve and the positioning column are assembled.

In some embodiments, a preset distance is formed between the lower surface of the fixing seat and an abutting surface of the flexible sleeve and the motor base, so that the fixing seat is not in direct contact with the motor base, and friction vibration is reduced.

In some embodiments, the top end surface of the flexible sleeve is higher than the top end surface of the positioning column.

In some embodiments, the top end surface of the flexible sleeve is higher than the plane of the top of the mounting hole, and the plane of the top of the mounting hole is higher than or flush with the top end surface of the positioning column.

In some embodiments, the connector comprises:

the threaded column is in threaded connection with the threaded hole of the positioning column, and the length of the threaded column is smaller than or equal to that of the threaded hole;

the abutting part is arranged at the end part of the threaded column;

and under the condition that the connecting piece is in threaded connection with the positioning column, the abutting part abuts against the top of the fixed seat.

In some embodiments, the motor base is formed with a hollowed-out portion, and the hollowed-out portion is used for installing the motor box and a motor in the motor box;

the positioning columns are uniformly arranged along the circumferential direction of the hollow-out portion at intervals, so that the motor base and the motor box are uniformly stressed after being connected.

The vibration damping device for the motor provided by the embodiment of the disclosure can realize the following technical effects:

the positioning column on the motor base is inserted into the mounting hole on the motor box, so that the motor base and the motor box are accurately positioned when assembled, the positioning time of the motor base and the motor box is saved, and the assembly efficiency is improved; then locate between mounting hole and the reference column through flexible cover for indirect contact between fixing base and the reference column, thereby can cushion the vibration that takes place because of motor work between fixing base and the reference column, realize the purpose of damping.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:

fig. 1 is a schematic structural diagram of the vibration damping device provided in the embodiment of the present disclosure;

FIG. 2 is a schematic cross-sectional view of the vibration damping device provided by an embodiment of the present disclosure;

FIG. 3 is a schematic structural diagram of another perspective view of the vibration damping device provided by the embodiment of the present disclosure;

FIG. 4 is a partial schematic structural view of the vibration damping device provided by the embodiment of the present disclosure;

FIG. 5 is a partial schematic structural view from another perspective of the vibration damping device provided by the embodiments of the present disclosure;

FIG. 6 is a partial schematic structural view of another perspective of the vibration damping device provided by the embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of the flexible sleeve provided by the embodiment of the disclosure;

fig. 8 is a schematic structural diagram of the connector provided in the embodiment of the present disclosure.

Reference numerals:

10: a motor box; 101: a fixed seat; 1011: the upper surface of the fixed seat; 102: mounting holes; 103: a notch; 104: a limiting part; 20: a motor base; 201: a positioning column; 202: a threaded hole; 203: a hollow-out section; 30: a flexible sleeve; 301: a limiting groove; 40: a connecting member; 401: a threaded post; 402: an abutting portion; 403: the lower surface of the top of the connector.

Detailed Description

So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.

The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the disclosed embodiments and their embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation. Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art as appropriate.

In addition, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. Specific meanings of the above terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art according to specific situations.

The term "plurality" means two or more unless otherwise specified.

In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

With reference to fig. 1 to 8, the embodiment of the present disclosure provides a vibration damping device for a motor, including a motor box 10, a motor base 20, and a flexible sleeve 30, wherein a fixing base 101 is configured on an outer wall of the motor box 10, and the fixing base 101 is provided with a through mounting hole 102; the motor base 20 is provided with a positioning column 201, and the positioning column 201 is inserted into the mounting hole 102 of the fixing base 101 and is connected with the motor box 10 in a positioning manner; the flexible sleeve 30 is embedded in the mounting hole 102 and sleeved on the outer wall of the positioning column 201, so that the fixing base 101 is indirectly contacted with the positioning column 201 to reduce vibration.

By adopting the vibration damper for the motor provided by the embodiment of the disclosure, the positioning column 201 on the motor base 20 is inserted into the mounting hole 102 on the motor box 10, so that the motor base 20 and the motor box 10 are accurately positioned during assembly, the positioning time of the assembly of the motor base 20 and the motor box 10 is saved, and the assembly efficiency is improved; then, the flexible sleeve 30 is arranged between the mounting hole 102 and the positioning column 201, so that the fixed seat 101 is indirectly contacted with the positioning column 201, vibration generated between the fixed seat 101 and the positioning column 201 due to the work of the motor can be buffered, and the purpose of vibration reduction is achieved.

The vibration damping device for the motor provided by the embodiment is generally used in household appliances, and particularly relates to a related household appliance adopting a stepping motor. The motor mount 20 in the vibration damping device is typically integrally formed with the housing of the corresponding apparatus. The motor box 10 is used for installing corresponding components such as a stepping motor. The motor box 10 and the components therein are mounted on the motor base 20.

The outer wall of the motor case 10 is configured with a fixing seat 101, which can be understood as that the fixing seat 101 is formed by bending and extending outwards from the edge of the motor case 10. Wherein, but fixing base 101 and motor box 10 integrated into one piece to improve the firmness between fixing base 101 and the motor box 10. Or the fixing base 101 may be welded to the motor case 10 to prevent vibration between the fixing base 101 and the motor case 10. Of course, the relationship between the fixing base 101 and the motor case 10 is not limited to the above two types, and any structure may be used as long as the purpose of the fixing base 101 can be achieved.

Referring to fig. 6, the outer wall of the motor box 10 provided in this embodiment is configured with three fixing seats 101, and a connecting line between the three fixing seats 101 is triangular. From this, motor box 10 and motor cabinet 20 are connected the back, can guarantee the connection stability of the two, avoid under the uneven condition of atress, aggravate the vibration between motor box 10 and the motor cabinet 20.

The fixing seat 101 is provided with a through mounting hole 102, and the positioning column 201 of the motor base 20 is inserted into the mounting hole 102 of the fixing seat 101, so that the motor box 10 and the motor base 20 can be accurately positioned during assembly, the positioning time can be saved, and the assembly efficiency can be improved.

The positioning column 201 protrudes from the surface of the motor base 20 so as to extend into the mounting hole 102. The flexible sleeve 30 is embedded in the mounting hole 102 and sleeved on the outer wall of the positioning column 201, so that the positioning column 201 can be prevented from directly contacting the fixing base 101. When the motor works, the vibration generated by the motor box 10 and/or the motor base 20 can be buffered through the flexible sleeve 30, so that the aim of vibration reduction is fulfilled.

The flexible sleeve 30 may be made of a rubber material. Thus, not only can be convenient for the assembly between the flexible sleeve 30 and the fixing base 101 and the positioning column 201, but also after the assembly, the flexible sleeve 30 is compressed, the compressed flexible sleeve 30 is located between the mounting hole 102 and the positioning column 201, and by means of the reaction force, the fixing base 101 and the positioning column 201 can be relatively fixed, so that the relative vibration friction between the fixing base 101 and the positioning column 201 is further reduced.

In practical application, the greater the compression amount of the flexible sleeve 30 is, the higher the assembly firmness between the fixed seat 101 and the positioning column 201 is, but the damping effect is weakened; the smaller the compression of the flexible sleeve 30, the lower the firmness of the assembly between the fixed seat 101 and the positioning post 201, but the greater the damping effect. The amount of compression of the flexible sleeve 30 may be determined based on the actual situation. In addition, the damping effect of the damping device is also related to the material and hardness of the flexible sheath 30.

Optionally, a threaded hole 202 is formed in the positioning column 201, and the fixing base 101 is detachably connected to the positioning column 201 through the connecting member 40; wherein, the lower surface 403 at the top of the connecting piece is abutted with the upper surface 1011 of the fixing base.

The flexible sleeve 30 is first embedded in the mounting hole 102 of the fixing base 101, and then sleeved on the positioning post 201 of the motor base 20 together with the fixing base 101. At this time, the motor box 10 and the motor base 20 can only realize the positioning connection, and the reaction force generated by the compression of the flexible sleeve 30 makes the fixing base 101 and the positioning column 201 relatively fixed. Through the threaded hole 202 formed in the positioning column 201, the connecting member 40 is detachably connected to the positioning column 201, and the lower surface of the connecting member 40 abuts against the upper surface 1011 of the fixing base. Therefore, the fixed connection is realized under the condition that the fixed seat 101 and the positioning column 201 are positioned and connected through the connecting piece 40.

It should be noted that "position-coupling" in this context means that two components are in contact and accurately positioned, i.e. that a fixed connection is achieved at the junction between the two components by means of another component.

The connecting member 40 of the present embodiment may be a screw or a bolt. In order to make the lower surface of the connecting member 40 better abut against the upper surface 1011 of the fixing base, the damping device may further include a gasket cooperating with the connecting member 40. The end face of the gasket covers the upper surface 1011 of the fixed seat, so that the end part of a screw or a bolt does not need to be modified, and the size of the gasket can be adjusted at any time according to different conditions, so that the flexibility of using the vibration damper is improved, and the application range of the vibration damper is expanded.

Herein, the "lower surface of the connecting member 40 abutting against the upper surface 1011 of the fixing base" and the "lower surface of the connecting member 40" and the "upper surface 1011 of the fixing base" can be referred to fig. 4. Here, the "lower surface of the connection member 40" means the lower surface of the top of the connection member 40. In case the damping means comprise a shim, the lower surface of the connecting piece 40 is also understood to be the lower surface of the shim.

Optionally, two opposite end surfaces of the flexible sleeve 30 are respectively abutted against the motor base 20 and the connecting member 40, and the flexible sleeve 30 is filled between the mounting hole 102 and the positioning column 201 to buffer the vibration between the fixing base 101 and the positioning column 201.

After the motor box 10 is assembled with the motor base 20, two opposite end faces of the flexible sleeve 30 are respectively abutted to the motor base 20 and the connecting piece 40, and a certain acting force is applied to the flexible sleeve 30 through the motor base 20, the connecting piece 40 and the fixed base 101, so that the flexible sleeve 30 is compressed and filled between the mounting hole 102 of the fixed base 101 and the positioning column 201. The vibration of the motor base 20 and the fixed seat 101 of the motor box 10 during the operation of the motor is transmitted to the flexible sleeve 30, and the flexible sleeve 30 absorbs part of the vibration and buffers the other part of the vibration, thereby achieving the purpose of vibration reduction.

In addition, the flexible sleeve 30 is compressed and filled between the mounting hole 102 of the fixed seat 101 and the positioning post 201, and the fixed seat 101 and the positioning post 201 are relatively fixed based on the flexible sleeve 30 by the reaction force of the compression and are arranged at intervals by the flexible sleeve 30. Therefore, the noises caused by mutual friction and vibration due to the direct contact between the fixing seat 101 and the positioning column 201 when the motor works can be eliminated, and the firmness between the fixing seat 101 and the positioning column 201 is improved.

Optionally, the outer wall of the flexible sleeve 30 is configured with a limiting groove 301, and the fixing seat 101 includes: a stopper 104 formed to protrude from the sidewall of the mounting hole 102 in the radial direction toward the center line; the position-limiting portion 104 is embedded in the position-limiting groove 301, so that the flexible sleeve 30 is connected with the fixing base 101.

The flexible sleeve 30 and the fixed base 101 are matched with each other through the limiting groove 301 and the limiting part 104, so that not only can the connection between the flexible sleeve 30 and the fixed base 101 be realized, but also the accurate assembly between the flexible sleeve 30 and the fixed base 101 can be realized, the flexible sleeve 30 and the fixed base 101 are prevented from being assembled in place, and the vibration reduction effect between the fixed base 101 and the positioning column 201 is influenced.

Optionally, the limiting groove 301 is arranged along the circumference of the flexible sleeve 30, wherein the limiting groove 301 may be arranged around the flexible sleeve 30. This facilitates not only processing, but also assembly, without the need for point-to-point positioning.

In addition, in the case that the limiting groove 301 is disposed around the flexible sleeve 30 for one circle, the limiting portion 104 of the fixing base 101 may be matched with the limiting groove 301, that is, the limiting portion 104 is formed around the mounting hole 102 for one circle in the circumferential direction. Or, the plurality of limiting parts 104 are arranged around the circumference of the mounting hole 102, and the plurality of limiting parts 104 are uniformly distributed at intervals to ensure that the stress is uniform after the limiting parts 104 are connected with the limiting grooves 301.

Optionally, the outer wall of the flexible sleeve 30 is configured with a plurality of limiting grooves 301, and the number and shape structures of the limiting portions 104 of the fixing base 101 are matched with the number and shape structures of the limiting grooves 301. In this way, the assembly between the limiting part 104 and the limiting groove 301 can be ensured, so that the assembly firmness between the flexible sleeve 30 and the fixed seat 101 is ensured.

In the case that the outer wall of the flexible sheath 30 is configured with a plurality of limiting grooves 301, the plurality of limiting grooves 301 are arranged around the circumference of the flexible sheath 30 and are annular. Thus, the strength of the flexible sleeve 30 can be ensured and the service life thereof can be prolonged under the condition that the limiting groove 301 is arranged. In the case where the outer wall of the flexible sheath 30 is configured with a plurality of stopper grooves 301, the number and the arrangement positions of the stopper portions 104 are adapted to the stopper grooves 301.

Optionally, the protruding dimension of the limiting part 104 is smaller than or equal to the groove depth of the limiting groove 301. Thus, under the condition that the limiting part 104 is embedded in the limiting groove 301, the outer surface of the flexible sleeve 30 positioned in the mounting hole 102 can be ensured to be abutted against the inner wall of the mounting hole 102, so that the reaction force of the flexible sleeve 30 compressed can be ensured to act on the fixed seat 101, and the purpose of relatively fixing the fixed seat 101 and the positioning column 201 is achieved.

Optionally, the fixing base 101 has a notch 103 formed on a side wall of the mounting hole 102 and communicating with the mounting hole 102, so that the flexible sleeve 30 and the fixing base 101 and the flexible sleeve 30 and the positioning post 201 can be assembled together.

A notch 103 is formed in the side wall of the mounting hole 102, wherein the notch 103 is axially disposed along the mounting hole 102 and extends from one end of the mounting hole 102 to the other end. Thus, the notch 103 can be understood as an opening formed on the side wall of the mounting hole 102 of the fixing base 101. When the flexible sleeve 30 is embedded in the mounting hole 102 of the fixed base 101, the flexible sleeve 30 and the fixed base 101 can be assembled conveniently, and then when the flexible sleeve is assembled on the positioning column 201, a part of extrusion force of the flexible sleeve 30 can be released through the notch 103, so that the phenomenon that the hardness of the flexible sleeve 30 is too high after being pressed is avoided, the elasticity of the flexible sleeve 30 is ensured, the vibration between the positioning column 201 and the fixed base 101 is ensured to be buffered through the flexible sleeve 30, and the vibration reduction effect is improved.

In practical applications, the size of the notch 103 can be determined according to actual conditions, i.e. the size of the fixing base 101 and the size of the mounting hole 102.

Optionally, a preset distance is formed between the lower surface of the fixing base 101 and an abutting surface of the flexible sleeve 30 and the motor base 20, so that the fixing base 101 is not in direct contact with the motor base 20, and friction vibration is reduced.

Through the lower surface of fixing base 101 to the preset distance of flexible cover 30 and motor cabinet 20's butt face interval, like this, after fixing base 101 and motor cabinet 20 assembly, fixing base 101 is for the suspension of motor cabinet 20, and fixing base 101 and motor cabinet 20 are not direct contact, avoid fixing base 101 and the contact of motor cabinet 20 to take place vibration friction.

In practical application, the lower surface of fixing base 101 is to flexible cover 30 and motor cabinet 20's butt face interval preset distance, not only including motor cabinet 20 and motor box 10 complete assembly be flexible cover 30 in the pressurized back promptly, fixing base 101 to flexible cover 30 and motor cabinet 20's butt face interval preset distance, but also include under the condition of motor work, motor cabinet 20 and motor box 10 vibrate, in the vibration process, fixing base 101 to flexible cover 30 and motor cabinet 20's butt face interval certain distance. The distance is smaller than the predetermined distance, and the purpose of the distance is to ensure that the fixing base 101 is not in direct contact with the motor base 20, so as to reduce the friction vibration.

The "preset distance" in this context only needs to ensure that the fixing base 101 and the motor base 20 do not directly contact with each other.

Optionally, the top end surface of the flexible sleeve 30 is higher than the top end surface of the positioning column 201.

The top end face of the flexible sleeve 30 is higher than the top end face of the positioning column 201, so that under the condition that the connecting piece 40 is in threaded connection with the positioning column 201, the connecting piece 40 compresses the flexible sleeve 30, the flexible sleeve 30 reacts on the connecting piece 40, the reacting force between the flexible sleeve 30 and the connecting piece 40 through the flexible sleeve 30 realizes relative fixation, the friction force between the end face of the flexible sleeve 30 and the abutting face of the connecting piece 40 is increased, vibration between the connecting piece 40 and the flexible sleeve 30 and between the positioning column 201 is avoided, and the purpose of vibration reduction is achieved.

When the connector 40 is screwed to the positioning post 201, the connector 40 may or may not abut against the top end surface of the positioning post 201. Whether the connecting piece 40 is abutted against the top end face of the positioning column 201 is determined according to actual conditions.

However, when the connector 40 does not abut against the end surface of the positioning column 201, that is, the lower surface of the connector 40 does not contact the end surface of the positioning column 201, the connector 40 and the positioning column 201 can be further prevented from generating frictional vibration. Under the condition that the connecting piece 40 is abutted against the end face of the positioning column 201, the problems of foreign matters entering the connecting part between the connecting piece 40 and the positioning column 201 and abnormal sound caused by the foreign matters can be avoided.

Optionally, the top end surface of the flexible sleeve 30 is higher than the plane of the top of the mounting hole 102, and the plane of the top of the mounting hole 102 is higher than or flush with the top end surface of the positioning pillar 201.

The top end face of the flexible sleeve 30 is higher than the plane where the top of the mounting hole 102 is located, so that the connecting piece 40 is in threaded connection with the positioning column 201, the connecting piece 40 compresses the flexible sleeve 30, the flexible sleeve 30 reacts on the connecting piece 40, the reaction force between the flexible sleeve 30 and the connecting piece 40 is relatively fixed, the friction force between the end face of the flexible sleeve 30 and the abutting face of the connecting piece 40 is increased, vibration between the connecting piece 40 and the flexible sleeve 30 and between the connecting column 201 is avoided, and the purpose of vibration reduction is achieved.

In addition, the connecting part 40 is screwed to the positioning column 201, and the connecting part 40 is installed in place until the connecting part 40 abuts against the top of the side wall of the installation hole 102. Therefore, the compression of the flexible sleeve 30 by the connecting piece 40 and the reaction force of the flexible sleeve 30 to the connecting piece 40 can be realized only by the fact that the top end face of the flexible sleeve 30 is higher than the plane where the top of the mounting hole 102 is located, and the purpose of vibration reduction is realized.

The plane of the top of the mounting hole 102 is higher than or flush with the top end face of the positioning column 201, so that when the threaded connection of the connecting piece 40 is ensured, the connecting piece is firstly abutted to the top of the side wall of the mounting hole 102, the installation is ensured to be in place, and the interference with the positioning column 201 is avoided.

Optionally, the connecting member 40 comprises: the threaded column 401 is in threaded connection with the threaded hole 202 of the positioning column 201, and the length of the threaded column 401 is smaller than or equal to that of the threaded hole 202; an abutment 402 provided at an end of the threaded post 401; when the connector 40 is screwed to the positioning post 201, the abutting portion 402 abuts against the top of the fixed base 101.

The connecting piece 40 is connected in the threaded hole 202 through the threaded column 401 in a threaded mode, and the detachable connection with the positioning column 201 is achieved. The length of the threaded column 401 is smaller than or equal to that of the threaded hole 202, so that when the connecting piece 40 is installed on the positioning column 201, the connecting piece 40 is installed in place through the abutting part 402 of the connecting piece 40 abutting against the top of the fixing seat 101, and therefore the situation that the threaded column 401 already abuts against the bottom of the threaded hole 202 and the abutting part 402 does not abut against the top of the fixing part is avoided.

The abutting part 402 and the threaded column 401 are integrally formed, the threaded column 401 extends into the threaded hole 202 and is in threaded connection with the threaded hole 202 until the abutting part 402 abuts against the top of the fixed seat 101, and the connecting piece 40 is installed in place. So, be convenient for on the one hand and indicate whether connecting piece 40 installs in place, on the other hand makes the decrement of flexible cover 30 confirm, avoids connecting piece 40 to the excessive compression of flexible cover 30, leads to its buffer power to fixing base 101 and reference column 201 to reduce for the damping effect reduces.

Optionally, the connecting member 40 further comprises: the gasket is sleeved on the threaded column 401 and abuts against the abutting part 402. The spacer is disposed between the abutting portion 402 and the fixing base 101. Wherein the size of the spacer is larger than the size of the abutment 402. Therefore, the connecting part of the fixed seat 101 and the positioning column 201 can be covered by the gasket, and the attractiveness of the connecting part is ensured.

Optionally, the motor base 20 is formed with a hollow portion 203, and the hollow portion 203 is used for installing the motor box 10 and the motor in the motor box 10; wherein, a plurality of reference columns 201 evenly set up along the circumference interval of fretwork portion 203 to the atress is even after making motor cabinet 20 be connected with motor box 10.

By arranging part of the motor box 10 and the motor in the motor box 10 at the hollow part 203 of the motor base 20, on one hand, the contact area between the motor box 10 and the motor base 20 can be reduced, thereby reducing noise caused by vibration; and on the other hand, the connection between the motor in the motor box 10 and other components in the household appliance is facilitated.

A plurality of reference columns 201 evenly arrange along the circumference interval of fretwork portion 203, connect the back at motor cabinet 20 and motor box 10, and the motor during operation guarantees that the atress of motor cabinet 20 and motor box 10 junction is even to improve the stability that motor cabinet 20 and motor box 10 are connected, avoid the life reduction and the abnormal sound problem that the atress is uneven to bring.

The above description and the drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. Vibration damping device for an electric machine, characterized by comprising:

the outer wall of the motor box is provided with a fixed seat, and the fixed seat is provided with a through mounting hole;

the motor base is provided with a positioning column, and the positioning column is inserted into the mounting hole of the fixing base and is connected with the motor box in a positioning way;

and the flexible sleeve is embedded in the mounting hole and sleeved on the outer wall of the positioning column so that the fixed seat is indirectly contacted with the positioning column to reduce vibration.

2. The vibration damping device according to claim 1,

a threaded hole is formed in the positioning column, and the fixed seat is detachably connected to the positioning column through a connecting piece;

and the lower surface of the top of the connecting piece is abutted against the upper surface of the fixed seat.

3. The vibration damping device according to claim 2,

two opposite end faces of the flexible sleeve are respectively abutted to the motor base and the connecting piece, and the flexible sleeve is filled between the mounting hole and the positioning column so as to buffer vibration between the fixing base and the positioning column.

4. The vibration damping device as claimed in claim 1 wherein the outer wall of the flexible sleeve is configured with a retaining groove, the retaining base comprising:

the limiting part is formed by a structure which protrudes from the side wall of the mounting hole to the direction of the central line along the radial direction;

the limiting part is embedded in the limiting groove, so that the flexible sleeve is connected with the fixing seat.

5. The vibration damping device according to claim 1,

the fixing seat is provided with a notch communicated with the mounting hole on the side wall of the mounting hole, so that the flexible sleeve and the fixing seat are assembled and the flexible sleeve and the positioning column are assembled.

6. The vibration damping device according to claim 1,

the lower surface of the fixing seat to the flexible sleeve and the abutting surface of the motor base are separated by a preset distance, so that the fixing seat is not in direct contact with the motor base, and friction vibration is reduced.

7. The vibration damping device according to claim 1,

the top end face of the flexible sleeve is higher than the top end face of the positioning column.

8. The vibration damping device according to claim 1,

the top end face of the flexible sleeve is higher than the plane where the tops of the mounting holes are located, and the plane where the tops of the mounting holes are located is higher than or flush with the top end face of the positioning column.

9. The vibration damping device of claim 2, wherein the connector comprises:

the threaded column is in threaded connection with the threaded hole of the positioning column, and the length of the threaded column is smaller than or equal to that of the threaded hole;

the abutting part is arranged at the end part of the threaded column;

and under the condition that the connecting piece is in threaded connection with the positioning column, the abutting part abuts against the top of the fixed seat.

10. The vibration damping device according to any one of claims 1 to 9,

the motor base is provided with a hollow part, and the hollow part is used for installing the motor box and a motor in the motor box;

the positioning columns are uniformly arranged along the circumferential direction of the hollow-out portion at intervals, so that the motor base and the motor box are uniformly stressed after being connected.

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