CN215897526U

CN215897526U - Motor stator grounding structure

Info

Publication number: CN215897526U
Application number: CN202121681481.9U
Authority: CN
Inventors: 韩敏
Original assignee: Suzhou Yongjie Motor Co ltd
Current assignee: Suzhou Yongjie Motor Co ltd
Priority date: 2021-07-19
Filing date: 2021-07-19
Publication date: 2022-02-22
Anticipated expiration: 2031-07-19

Abstract

The utility model relates to a motor stator grounding structure. The utility model comprises the following steps: the stator comprises a stator core, a grounding sheet and a stator framework; the stator framework comprises a grounding installation structure, the grounding installation structure comprises a lower end face provided with a grounding groove, the grounding piece comprises a connecting section arranged between the stator framework and a stator iron core and a wiring section connected with the connecting section, the connecting section comprises a fixing plate matched with the shape of the grounding groove, and the lower end face of the fixing plate is parallel to the upper end face of a yoke part of the stator iron core. The grounding piece structure of the motor stator can ensure reliable contact of the grounding piece, and has the advantages of simple structure, small volume, low cost, convenience in use and high adaptability.

Description

Motor stator grounding structure

Technical Field

The utility model relates to the technical field of series excited motors, in particular to a motor stator grounding structure.

Background

Most of the existing motors in the field of series excitation dust collector motors are divided into a bracket type and a shell type, wherein the bracket type motor is divided into a dry type motor and a dry-wet type motor, so that the motors are suitable for different tool environments, the bracket type dry type motor generally comprises an air collecting cover, an upper bracket, a stator, a rotor, a fixed impeller, a movable impeller, an impeller cover electric brush assembly and the like, and due to safety requirements, a stator iron core needs to be provided with an external grounding piece structure, and the use safety of the motor is ensured.

The existing stator grounding structure has the following problems: firstly, as the grounding sheet is too large, the grounding sheet protrudes out of the maximum excircle of the stator core, and the installation is difficult, a larger position needs to be reserved during the whole machine assembly, and the volume of matched parts is larger, so that unnecessary waste is formed; secondly, because the iron core is subjected to rust prevention treatment when being supplied, substances such as rust prevention oil exist between the grounding piece and the iron core, and the grounding effect of the grounding piece is affected.

Therefore, a stator grounding structure with improved grounding sheet contact, small size, convenient processing and low cost is needed.

SUMMERY OF THE UTILITY MODEL

Therefore, the technical problem to be solved by the utility model is to overcome the problems of large size, high cost, difficult installation, poor grounding effect and the like of the stator grounding strip in the prior art.

In order to solve the above technical problem, the present invention provides a motor stator grounding structure, including: the stator comprises a stator core, a grounding sheet and a stator framework; the stator framework comprises a grounding installation structure, the grounding installation structure comprises a lower end face provided with a grounding groove, the grounding piece comprises a connecting section arranged between the stator framework and a stator iron core and a wiring section connected with the connecting section, the connecting section comprises a fixing plate matched with the shape of the grounding groove, and the lower end face of the fixing plate is parallel to the upper end face of a yoke part of the stator iron core.

In one embodiment of the utility model, the connecting segments are perpendicular to the wire segments.

In one embodiment of the utility model, the wire segment is provided with wire fixation through holes.

In one embodiment of the utility model, the connecting section further comprises a mounting plate, and the mounting plate is provided with mounting and fixing through holes.

In one embodiment of the present invention, the yoke portion of the stator core is provided with coupling fixing through-holes corresponding to the fixing holes.

In one embodiment of the utility model, the mounting fixing through holes of the mounting plate are connected with the connecting fixing through holes of the stator core through screws.

In one embodiment of the utility model, the fixing plate is provided with a positioning slot, and the grounding slot is provided with a protruding structure matched with the positioning slot.

In one embodiment of the utility model, the positioning groove and the protruding structure are both in a strip shape.

In one embodiment of the present invention, the ground mounting structure further includes a side end surface perpendicular to the lower end surface, and the wire connecting segment is attached to the side end surface.

In one embodiment of the utility model, a plurality of elastic positioning teeth are distributed on the periphery of the mounting and fixing through hole.

Compared with the prior art, the technical scheme of the utility model has the following advantages:

the grounding piece structure of the motor stator can ensure reliable contact of the grounding piece, and has the advantages of simple structure, small volume, low cost, convenience in use and high adaptability.

Drawings

In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the embodiments of the present disclosure taken in conjunction with the accompanying drawings, in which

Fig. 1 is a schematic view of the grounding structure of the stator of the motor of the present invention.

Fig. 2 is a schematic view of the grounding plate structure of the present invention.

FIG. 3 is a schematic view of the stator frame and the connecting and fixing through hole structure of the present invention.

Fig. 4 is a schematic view of the ground mounting structure of the present invention.

The specification reference numbers indicate: 1. a stator core; 2. a ground plate; 21. a connecting section; 212. a fixing plate; 2121. positioning and slotting; 22. a wire connection section; 221. a wiring fixing through hole; 23. mounting a plate; 231. installing a fixing through hole; 232. elastic positioning teeth; 3. a stator frame; 31. a ground mounting structure; 32. a lower end face; 33. a ground tank; 331. a raised structure; 34. a side end face; 35. connecting and fixing through holes; 4. and (4) screws.

Detailed Description

The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.

Referring to fig. 1 to 4, a stator grounding structure of a motor according to the present invention includes: the grounding structure comprises a stator iron core 1, a grounding plate 2 and a stator framework 3; stator skeleton 3 includes ground connection mounting structure 31, ground connection mounting structure 31 is including the lower terminal surface 32 that is equipped with earthing groove 33, earthing lug 2 is including locating linkage segment 21 between stator skeleton 3 and stator core 1, the wiring section 22 that is connected with linkage segment 21, linkage segment 21 includes the fixed plate 212 with earthing groove 33 shape assorted, terminal surface 32 is on a parallel with the yoke portion up end of stator core 1 under the fixed plate 212. Through above-mentioned structure, because grounding lug 2 and stator skeleton 3 cooperate, stator skeleton 3 is gone into to grounding lug 2 built-in, has reduced grounding lug 2's occupation of land size, wraps up through stator skeleton 3, and the installation is firm.

Specifically, the connection segment 21 is perpendicular to the connection segment 22, the ground mounting structure 31 further includes a side end surface 34 perpendicular to the lower end surface 32, and the connection segment 22 is attached to the side end surface 34. Through rationally setting up grounding lug 2 structure, avoid grounding lug 2 outstanding stator core 1 biggest excircle.

Specifically, the connection segment 22 is provided with a connection fixing through hole 221, so as to be conveniently fixed with the connection terminal.

Specifically, the connection section 21 further includes a mounting plate 23, the mounting plate 23 is provided with mounting fixing through holes 231, the yoke portion of the stator core 1 is provided with connecting fixing through holes 35 corresponding to the fixing holes, and the mounting fixing through holes 231 of the mounting plate 23 are connected with the connecting fixing through holes 35 of the stator core 1 through screws 4. Through the structure, the installation of the grounding plate 2 is convenient to disassemble, the grounding plate 2 is installed more firmly, the grounding effect of the grounding plate 2 is ensured, and in addition, due to the use of the fixing screws 4 (screws for connecting the stator core 1 with the upper bracket and the impeller) of the motor, the fixing of the grounding plate 2 by using another fixing structure is omitted.

Specifically, the fixing plate 212 is provided with a positioning slot 2121, and the grounding slot 33 is provided with a protruding structure 331 matching with the positioning slot 2121. In this embodiment, the positioning slot 2121 and the protruding structure 331 are both in a strip shape, and can position the grounding strip 2 on the stator frame 3 and prevent the connecting section 21 of the grounding strip 2 from slipping.

Specifically, a plurality of elastic positioning teeth 232 are distributed on the periphery of the mounting and fixing through hole 231, so that the grounding plate 2 is prevented from sliding after being fixed with other parts of the motor through the screw 4.

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 of the utility model may be made without departing from the spirit or scope of the utility model.

Claims

1. An electric machine stator grounding structure, comprising: the stator comprises a stator core, a grounding sheet and a stator framework; the stator framework comprises a grounding installation structure, the grounding installation structure comprises a lower end face provided with a grounding groove, the grounding piece comprises a connecting section arranged between the stator framework and a stator iron core and a wiring section connected with the connecting section, the connecting section comprises a fixing plate matched with the shape of the grounding groove, and the lower end face of the fixing plate is parallel to the upper end face of a yoke part of the stator iron core.

2. The grounding structure of an electric machine stator as claimed in claim 1, wherein the connecting section is perpendicular to the terminal section.

3. The grounding structure of an electric motor stator as claimed in claim 1, wherein the terminal section is provided with a terminal fixing through-hole.

4. The grounding structure of the stator of the motor as claimed in claim 1, wherein the connecting section further comprises a mounting plate, and the mounting plate is provided with mounting fixing through holes.

5. The grounding structure of an electric motor stator according to claim 4, wherein the yoke portion of the stator core is provided with coupling fixing through holes corresponding to the fixing holes.

6. The grounding structure of the stator of the motor as claimed in claim 5, wherein the mounting fixing through holes of the mounting plate are connected with the connecting fixing through holes of the stator core by screws.

7. The grounding structure of stator of electric motor as claimed in claim 1, wherein said fixing plate is provided with positioning slots, and said grounding slots are provided with protrusions for engaging with said positioning slots.

8. The grounding structure of stator of electrical machine as claimed in claim 7, wherein the positioning slots and the protrusions are both in the shape of long bar.

9. The grounding structure of an electric machine stator as claimed in claim 1, wherein the grounding mounting structure further comprises a side end surface perpendicular to the lower end surface, and the wire connecting segment is attached to the side end surface.

10. The grounding structure of the stator of the motor as claimed in claim 4, wherein a plurality of elastic positioning teeth are distributed around the mounting and fixing through hole.