CN111262396A - Motor grounding structure and motor - Google Patents
Motor grounding structure and motor Download PDFInfo
- Publication number
- CN111262396A CN111262396A CN201911100992.4A CN201911100992A CN111262396A CN 111262396 A CN111262396 A CN 111262396A CN 201911100992 A CN201911100992 A CN 201911100992A CN 111262396 A CN111262396 A CN 111262396A
- Authority
- CN
- China
- Prior art keywords
- grounding
- motor
- metal fixing
- fixing piece
- end cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/40—Structural association with grounding devices
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
Abstract
A motor grounding structure and a motor relate to the technical field of motor grounding; the motor grounding structure comprises a grounding seat, a grounding pin and a metal fixing piece; the grounding seat is arranged in a shell of the motor; one end of the grounding pin is arranged on the grounding seat, and the other end of the grounding pin extends outwards to one side facing the end cover; the metal fixing piece is arranged on an end cover of the motor, a grounding connection cavity for accommodating a grounding pin is arranged on the metal fixing piece, the grounding connection cavity penetrates through the whole metal fixing piece and is communicated with the outside of the end cover, and the grounding connection cavity is arranged corresponding to the grounding pin; when the end cover is installed on the shell, the grounding pin is located in the grounding connection cavity of the metal fixing piece and is jointed with the metal fixing piece together. The motor stator grounding structure has a compact structure, reduces the difficulty of the installation process, is more reliable in connection, and can realize the simultaneous grounding of the motor stator and the brake.
Description
Technical Field
The invention relates to the technical field of motor grounding, in particular to a motor grounding structure and a motor.
Background
The servo motor is widely used in high-automation equipment as a high-precision power output device, the grounding of the servo motor is of great importance in motor design, and the unreasonable or unreliable grounding can cause electric leakage and even casualties to cause loss.
In order to realize grounding of the motor, most motors in the prior art are additionally provided with a grounding part on a motor shell or a motor end cover, and the connection between the interior of the motor and a grounding pin or a grounding wire is realized through the additionally arranged grounding part; although the grounding treatment of the motor can be realized, parts need to be additionally arranged on a motor shell or an end cover, so that the motor is complex in structure, the connection between the motor and the additionally arranged parts needs to be well completed during installation, and certain difficulty is brought to the installation of the motor.
For example, the utility model patent with publication number CN09106346U, "motor connector" contacts the grounding pin with the grounding elastic sheet arranged outside the motor housing, and fixes the grounding pin with the grounding elastic sheet by welding, and meanwhile, the housing body needs to be fixed on the motor housing by means of bolts, so as to realize the grounding connection of the motor. Obviously, such a grounding method is too complicated, more parts need to be arranged, and the fixing method and the mounting method are complicated and difficult to operate.
Disclosure of Invention
The invention aims to avoid the defects in the prior art and provides a motor grounding structure which is simple, simple and convenient in installation process and compact in structure.
Another object of the present invention is to provide an electric machine
The purpose of the invention is realized by the following technical scheme:
a motor grounding structure comprises a grounding seat, a grounding pin and a metal fixing piece; the grounding seat is arranged in a shell of the motor; one end of the grounding pin is arranged on the grounding seat, and the other end of the grounding pin extends outwards to one side facing the end cover; the metal fixing piece is arranged on an end cover of the motor, a grounding connection cavity for accommodating a grounding pin is arranged on the metal fixing piece, the grounding connection cavity penetrates through the whole metal fixing piece and is communicated with the outside of the end cover, and the grounding connection cavity is arranged corresponding to the grounding pin; when the end cover is installed on the shell, the grounding pin is located in the grounding connection cavity of the metal fixing piece and is jointed with the metal fixing piece together.
In a preferred embodiment of the present invention, the metal fixing member is formed of a metal sleeve, and an inner cavity of the metal sleeve forms the ground connection cavity.
In a preferred scheme of the invention, the end cover is provided with a grounding connecting hole, and the grounding connecting hole extends along the length direction of the motor and is communicated with the outside; the metal fixing member is disposed in the ground connection hole.
In a preferred embodiment of the present invention, the metal fixing member is inserted into the ground connection hole in an interference fit manner.
In a preferred embodiment of the present invention, the grounding pin and the metal fixing member are fixed by solder.
In a preferred embodiment of the present invention, an inner diameter of the ground connection cavity near an outer end is gradually enlarged to form a conical penetration cavity for penetrating the solder.
In a preferred embodiment of the present invention, the size relationship between the metal fixing member and the ground connection cavity is 1.1a < D <4a, where a is the maximum contour size of the ground pin, D is the inner diameter of the ground connection cavity, and D is the outer diameter of the metal fixing member.
In a preferred embodiment of the present invention, the ground connection hole is a stepped hole.
Preferably, the cross section of the ground connection hole is polygonal.
10 an electric machine, including above-mentioned electric machine ground structure.
The invention has the beneficial effects that:
1. the grounding pin in the grounding structure of the invention directly contacts with the metal fixing piece on the end cover to realize the grounding of the motor, the structure is compact, the difficulty of the installation process is reduced, the production cost is reduced, no grounding part is required to be additionally arranged on the shell of the motor, and the structure of the motor is simplified.
2. The metal fixing piece is arranged on the end cover, the connection between the grounding needle and the metal fixing piece is completed while the end cover is installed, and the metal fixing piece and the end cover can be regarded as a whole, so that the connection between the grounding needle and the metal fixing piece is more reliable.
3. The grounding pin is connected with the end cover to realize the conduction of the grounding pin with the end cover, the motor shell and the motor stator, thereby realizing the grounding of the motor stator; simultaneously, the stopper that sets up in the end cover outside also switches on with the end cover, has consequently also realized the ground connection of stopper, kills two birds with one stone, design benefit.
Drawings
The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be derived on the basis of the following drawings without inventive effort.
Fig. 1 to 3 are schematic structural views of a first embodiment of a motor grounding structure according to the present invention, in which fig. 1 is a front view, fig. 2 is an enlarged view of i in fig. 1, and fig. 3 is a perspective view of an end cap.
Fig. 4 is a partially enlarged view of a second embodiment of the motor ground structure of the present invention.
Fig. 5 is a schematic view of a grounding connection hole and a metal sleeve in a fourth embodiment of the motor grounding structure of the present invention.
Fig. 6 is a partially enlarged view of a fifth embodiment of the motor ground structure of the present invention.
Detailed Description
The invention is further described with reference to the following examples.
Example 1
Referring to fig. 1 to 3, the grounding structure of the motor of the present embodiment includes a grounding base 3, a grounding pin 4 and a metal fixing member; wherein, the grounding seat 3 is arranged in the shell 1 of the motor; one end of the grounding pin 4 is arranged on the grounding seat 3, and the other end of the grounding pin extends outwards to one side facing the end cover 2; the metal fixing piece is arranged on an end cover 2 of the motor, a grounding connection cavity 6 for accommodating a grounding pin 4 is arranged on the metal fixing piece, the grounding connection cavity 6 penetrates through the whole metal fixing piece and is communicated with the outside of the end cover 2, and the grounding connection cavity 6 is arranged corresponding to the grounding pin 4; when the end cap 2 is mounted on the casing 1, the grounding pin 4 is located in the grounding connection cavity 6 of the metal fixing piece and is jointed with the metal fixing piece. The metal fixing piece is composed of a metal sleeve 5, and an inner cavity of the metal sleeve 5 forms the grounding connection cavity 6. The end cover 2 is provided with a grounding connection hole 7, and the grounding connection hole 7 extends along the length direction of the motor and is communicated with the outside; the metal sleeve 5 is inserted into the ground connection hole 7 in an interference fit manner.
Adopt metal covering 5 and earthing pin 4 to be connected fixedly, simple structure is convenient for fix with end cover 2 to can reduce cost. The end cover 2 is provided with the grounding connecting hole 7, so that on one hand, the installation of a metal fixing piece is facilitated, and on the other hand, after the metal sleeve 5 is installed in the grounding connecting hole 7, the metal fixing piece and the end cover 2 form a whole, so that the grounding needle 4 and the end cover 2 are conveniently fixed, and the grounding needle 4 and the end cover 2 are conveniently installed; in addition, because the grounding connection hole 7 is communicated with the outside, after the matching installation of the grounding pin 4 and the grounding connection cavity 6 is completed, the port on the outer side of the grounding connection hole 7 can be used for fixing, so that the grounding pin 4 is more convenient to fix, and the process difficulty of installation and fixation is reduced. The metal sleeve 5 is directly inserted into the grounding connecting hole 7 in an interference fit mode, the installation mode is simple and convenient, additional welding and fixing are not needed, the installation steps are simplified, and the cost is reduced. In addition, the metal sleeve 5 can be fixed on the end cover 2 by welding, so that the metal sleeve 5 is connected with the end cover 2.
Referring to fig. 2, the grounding pin 4 and the metal sleeve 5 are fixed by means of solder penetration. After the installation of the end cover 2 is completed, the grounding pin 4 is located in the grounding connection cavity 6 of the metal sleeve 5, and the grounding connection cavity 6 is arranged in the grounding connection hole 7 and communicated with the outside, so that soldering tin can be carried out through the port on the other side of the grounding connection hole 7, the grounding pin 4 and the metal sleeve 5 are fixed, and the connection with the end cover 2 is realized.
In this embodiment, the dimensional relationship between the metal fixing member and the grounding connection cavity 6 is 1.1a < D <4a, where a is the maximum outline size of the grounding pin 4, D is the inner diameter of the grounding connection cavity 6, and D is the outer diameter of the metal fixing member. When the inner diameter of the grounding connection cavity 6 of the metal fixing piece is smaller, the grounding pin 4 is not easy to insert into the grounding connection cavity 6 due to the problem of process precision, or the residual space of the metal connection cavity after insertion is too small, so that soldering tin is less, and the connection between the connecting pin and the metal fixing piece is unstable; when the outer diameter of the metal fixing piece is too large, on one hand, the grounding hole in the end cover 2 is enlarged, the grounding hole is easy to interfere with other structures of the end cover 2, the structural strength is reduced, on the other hand, the volume of the metal fixing piece is increased, and the production cost is increased; therefore, the selection of the proper size of the metal fixing piece is very important for the production of the motor. When the outer diameter D of the metal fixing piece and the inner diameter D of the grounding connection cavity 6 are full of 1.1a < D < D <4a, the grounding process difficulty can be effectively reduced, the grounding reliability of the motor can be guaranteed, the production efficiency is effectively improved, and the product cost is reduced.
Referring to fig. 2, the metal sleeve 5 is in a straight cylinder manner, so that the manufacturing is convenient, and the production cost is reduced. The grounding connection hole 7 on the end cover 2 is a round hole matched with the straight cylinder type metal sleeve 5, so that the difficulty of processing the grounding connection hole 7 on the end cover 2 is reduced.
In this embodiment, the metal fixing member may be fixed to the end cover 2 by using other structures, and may be fixed to the outside of the end cover 2 by using a bolt connection manner, as long as the grounding connection cavity 6 on the metal fixing member corresponds to the grounding pin 4 and can be fixed by soldering tin.
Referring to fig. 1 to 3, the principle of the motor grounding structure of the present embodiment is as follows:
before the end cover is installed, the metal sleeve 5 is pressed into the grounding connecting hole 7 of the end cover 2 through external force; when the end cover 2 is installed, the grounding connection cavity 6 of the metal sleeve 5 on the end cover 2 is ensured to correspond to the grounding pin 4 on the shell 1 of the motor, and the grounding pin 4 is inserted into the grounding connection hole 7; then, soldering tin is carried out on the grounding pin 4 and the metal sleeve 5 through a port on the outer side of the grounding connecting hole 7 on the end cover 2, so that the grounding pin 4 is fixed; and finally, the brake on the outer side of the end cover 2 is arranged on the end cover 2, so that the installation of the whole motor grounding structure is completed, and the grounding of the motor stator and the brake is realized.
The motor of this embodiment includes above-mentioned motor ground structure.
Example 2
Referring to fig. 4, the present embodiment is different from embodiment 1 in that the inner diameter of the ground connection cavity 6 at the end near the outside is gradually enlarged to form a conical penetration cavity 9 for penetrating solder. Through the setting of infiltration chamber 9, be convenient for the infiltration of soldering tin behind installation end cover 2 to realize the fixed of earthing pin 4.
In addition, one end of the grounding connection cavity 6 close to the grounding pin 4 can be set to be a gradually enlarged conical inner cavity, so that the grounding pin 4 can be better and more smoothly inserted into the grounding connection cavity 6 when the end cover 2 is installed.
Example 3
The present embodiment is different from embodiment 1 in that the ground connection hole 7 is a stepped hole. Through setting up ground connection connecting hole 7 as the step hole, be convenient for judge when inserting metal mounting into ground connection connecting hole 7 whether the metal mounting is installed in place, simple structure and effectual.
Example 4
Referring to fig. 5, the present embodiment is different from embodiment 1 in that the ground connection hole 7 has a polygonal cross section, such as a triangle, a quadrangle, etc. (the ground connection hole 7 having a quadrangular cross section in fig. 5). At this time, the outer contour of the metal fixing member may be set to be cylindrical, so that the cylindrical metal fixing member is inserted into the polygonal ground connection hole 7, and since there is a certain gap in the polygonal ground connection hole 7, the metal fixing member can be inserted into the ground connection hole 7 more easily, but at the same time, the metal fixing member can be fixed by interference fit.
Example 5
Referring to fig. 6, the difference between this embodiment and embodiment 1 is that, for the split brake, a connection hole corresponding to the ground connection hole 7 on the end cover 2 is provided on the housing of the brake, so that when the brake housing 8 is mounted on the end cover 2, the ground connection hole 7 on the end cover 2 and the connection hole on the brake housing form an integral body, then a metal fixing member is mounted in the ground connection hole 7 and the connection hole in an interference fit manner, then the end cover 2 and the brake housing 8 are mounted on the motor, the ground pin 4 is inserted into the ground connection hole 7 and the connection hole, then soldering is performed from the connection hole port on the other side of the brake housing 8, so as to fix the ground pin 4, and finally, other parts of the brake are mounted on the brake housing 8, so as to complete the grounding of the motor and. Through set up the connecting hole on stopper shell 8, be convenient for carry out soldering tin fixed to earthing pin 4, be favorable to forming a whole with end cover 2, metal mounting and stopper shell 8, reduce the degree of difficulty of ground connection.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. A motor grounding structure is characterized in that: comprises a grounding seat, a grounding pin and a metal fixing piece; the grounding seat is arranged in a shell of the motor; one end of the grounding pin is arranged on the grounding seat, and the other end of the grounding pin extends outwards to one side facing the end cover; the metal fixing piece is arranged on an end cover of the motor, a grounding connection cavity for accommodating a grounding pin is arranged on the metal fixing piece, the grounding connection cavity penetrates through the whole metal fixing piece and is communicated with the outside of the end cover, and the grounding connection cavity is arranged corresponding to the grounding pin; when the end cover is installed on the shell, the grounding pin is located in the grounding connection cavity of the metal fixing piece and is jointed with the metal fixing piece together.
2. A motor grounding structure as set forth in claim 1, wherein: the metal fixing piece is composed of a metal sleeve, and an inner cavity of the metal sleeve forms the grounding connection cavity.
3. A motor grounding structure as set forth in claim 1 or 2, wherein: the end cover is provided with a grounding connecting hole, and the grounding connecting hole extends along the length direction of the motor and is communicated with the outside; the metal fixing member is disposed in the ground connection hole.
4. A motor grounding structure as set forth in claim 3, wherein: the metal fixing piece is inserted into the grounding connection hole in an interference fit mode.
5. A motor grounding structure as set forth in claim 1, wherein: the grounding pin and the metal fixing piece are fixed in a soldering tin infiltration mode.
6. A motor grounding structure as set forth in claim 5, wherein: the inner diameter of one end of the grounding connection cavity close to the outer side is gradually enlarged to form a conical infiltration cavity for infiltrating soldering tin.
7. A motor grounding structure as set forth in claim 1, wherein: the size relation of the metal fixing piece and the grounding connection cavity is 1.1a < D < D <4a, wherein a is the maximum outline size of the grounding pin, D is the inner diameter of the grounding connection cavity, and D is the outer diameter of the metal fixing piece.
8. A motor grounding structure as set forth in claim 3, wherein: the grounding connecting hole is a step hole.
9. A motor grounding structure as set forth in claim 3, wherein: the cross section of the grounding connecting hole is polygonal.
10. An electrical machine comprising an electrical machine grounding structure according to claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911100992.4A CN111262396B (en) | 2019-11-12 | 2019-11-12 | Motor grounding structure and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911100992.4A CN111262396B (en) | 2019-11-12 | 2019-11-12 | Motor grounding structure and motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111262396A true CN111262396A (en) | 2020-06-09 |
| CN111262396B CN111262396B (en) | 2021-08-20 |
Family
ID=70948440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911100992.4A Active CN111262396B (en) | 2019-11-12 | 2019-11-12 | Motor grounding structure and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111262396B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10174357A (en) * | 1996-12-06 | 1998-06-26 | Asmo Co Ltd | Connector terminal |
| CN1454406A (en) * | 2000-08-03 | 2003-11-05 | 松下电器产业株式会社 | Brushless motor and method of Manufacturing the brushless motor |
| DE102018010048A1 (en) * | 2018-04-09 | 2019-10-10 | Wolfgang Mühlhaus | independent field control |
-
2019
- 2019-11-12 CN CN201911100992.4A patent/CN111262396B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10174357A (en) * | 1996-12-06 | 1998-06-26 | Asmo Co Ltd | Connector terminal |
| CN1454406A (en) * | 2000-08-03 | 2003-11-05 | 松下电器产业株式会社 | Brushless motor and method of Manufacturing the brushless motor |
| DE102018010048A1 (en) * | 2018-04-09 | 2019-10-10 | Wolfgang Mühlhaus | independent field control |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111262396B (en) | 2021-08-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9071023B2 (en) | Device connector | |
| US8550844B2 (en) | Fluidproof connector | |
| CN101707312B (en) | Connector of threaded connection | |
| WO2014147756A1 (en) | Vehicle-side connector | |
| CN111262396B (en) | Motor grounding structure and motor | |
| CN109149206B (en) | Miniaturized crown spring type jack assembly | |
| CN207459272U (en) | Connector shell component, connector and CCD camera assembly | |
| JP4360877B2 (en) | Hydraulic control unit | |
| CN207504292U (en) | Connector for radio-frequency coaxial cable quick installation mechanism | |
| TWI651905B (en) | Wire connector | |
| CN101950884A (en) | Pull-push quick locking electric connector | |
| CN214754335U (en) | Adapter | |
| CN211701730U (en) | Speed reducing motor | |
| CN209046396U (en) | A kind of easy wiring plastic packaging motor | |
| CN211351050U (en) | A kind of interface unit | |
| CN210926493U (en) | Welding cable clamping type protection structure | |
| CN216028587U (en) | Electrochemical machining balance electrode potential installation device | |
| CN212968126U (en) | Connecting structure of cable conductor and outlet component | |
| CN219843176U (en) | Connector socket | |
| CN213460176U (en) | Socket device for hand-held electric equipment | |
| CN111370876B (en) | Connecting structure of conducting rod and electric connecting device | |
| CN213460384U (en) | Electric connector for wired handheld electric equipment | |
| CN218387086U (en) | Shell assembly, motor and electrical equipment | |
| CN213043107U (en) | High-reliability test cable assembly | |
| CN217062698U (en) | 8-core connector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |