CN109099065B - Welding protective sleeve and magnetic suspension axial bearing - Google Patents
Welding protective sleeve and magnetic suspension axial bearing Download PDFInfo
- Publication number
- CN109099065B CN109099065B CN201811161084.1A CN201811161084A CN109099065B CN 109099065 B CN109099065 B CN 109099065B CN 201811161084 A CN201811161084 A CN 201811161084A CN 109099065 B CN109099065 B CN 109099065B
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- China
- Prior art keywords
- welding
- wire
- hole
- lead
- axial bearing
- 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.)
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- 238000003466 welding Methods 0.000 title claims abstract description 61
- 239000000725 suspension Substances 0.000 title claims abstract description 24
- 230000001681 protective effect Effects 0.000 title claims abstract description 17
- 238000004804 winding Methods 0.000 claims description 24
- 229910000679 solder Inorganic materials 0.000 claims description 15
- 125000006850 spacer group Chemical group 0.000 claims description 8
- 238000005339 levitation Methods 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 claims 1
- 230000004907 flux Effects 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 11
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- 239000000741 silica gel Substances 0.000 description 7
- 229910002027 silica gel Inorganic materials 0.000 description 7
- 238000005476 soldering Methods 0.000 description 6
- KKQWHYGECTYFIA-UHFFFAOYSA-N 2,5-dichlorobiphenyl Chemical compound ClC1=CC=C(Cl)C(C=2C=CC=CC=2)=C1 KKQWHYGECTYFIA-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000004308 accommodation Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 238000003618 dip coating Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/047—Details of housings; Mounting of active magnetic bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0474—Active magnetic bearings for rotary movement
- F16C32/0476—Active magnetic bearings for rotary movement with active support of one degree of freedom, e.g. axial magnetic bearings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electromagnets (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention provides a welding protective sleeve and a magnetic suspension axial bearing. The welding protection sleeve comprises a body (1), wherein a wire passing hole (2) for leading out a lead-out wire (11) is formed in the body (1), and a counter bore (3) is formed in the periphery of a wire outlet end of the wire passing hole (2). According to the welding protective sleeve disclosed by the invention, the problem of electrical safety caused by excessive welding flux when the outgoing line and the PCB are welded and fixed can be solved.
Description
Technical Field
The invention belongs to the technical field of bearings, and particularly relates to a welding protective sleeve and a magnetic suspension axial bearing.
Background
The existing magnetic suspension axial bearing structure adopts the structure that a coil outgoing line is led out from an iron core groove, a gap is filled with silica gel in a skeleton and an outgoing line waist-shaped hole, and the outgoing line and a PCB are connected together through welding.
When bonding wire circle lead-out wire and PCB board, the in-process of soldering tin, soldering tin time is long, the tin volume is too much, and tin can fill the gap along PCB board and silica gel, and tin can surpass the pad easily, leads to the lead-out wire insufficient creepage or direct short circuit, and the inboard soldering tin condition is externally unable to be seen, and the bearing draws forth the striking sparks at the process of operation, burns blackly badly. Similar problems exist for welded structures using other solders.
Silica gel for filling gaps is easy to foam in the paint dipping and baking process, and subsequent procedures cannot be completely cleaned, so that the operating environment of the bearing is easily polluted.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to provide a welding protective sleeve and a magnetic suspension axial bearing, which can overcome the electrical safety problem caused by excessive welding flux when the outgoing line and the PCB are welded and fixed.
In order to solve the problems, the invention provides a welding protective sleeve which comprises a body, wherein a wire through hole for leading out a lead wire is formed in the body, and a counter bore is formed in the periphery of a wire outlet end of the wire through hole.
Preferably, the wire through hole comprises at least two, the counter bores comprise at least two and are arranged corresponding to the wire through hole, and the two counter bores are spaced by the spacing part.
Preferably, the spacing part is provided with a spacing groove for spacing the two counter bores.
Preferably, a sunken groove is formed in the body on the back side of the sunken hole, a convex column is arranged in the sunken groove, and the line passing hole penetrates through the convex column.
According to another aspect of the invention, a magnetic suspension axial bearing is provided, which comprises a winding frame and a PCB board, and further comprises the welding protective sleeve, wherein the welding protective sleeve is arranged between the winding frame and the PCB board, a coil is wound on the winding frame, the coil comprises an outgoing line, and the outgoing line penetrates through a line passing hole of the welding protective sleeve and then is welded with the PCB board.
Preferably, the winding framework comprises a waist-shaped boss, the welding protection sleeve is sleeved on the waist-shaped boss, and the outgoing line enters the welding protection sleeve from the waist-shaped boss.
Preferably, when the welding protection sleeve comprises the spacing groove, the PCB board is provided with a strip hole corresponding to the spacing groove.
Preferably, the magnetic suspension axial bearing further comprises a bearing iron core, the bearing iron core is provided with a mounting groove, and the winding framework is arranged in the mounting groove and located between the bearing iron core and the welding protective sleeve.
Preferably, the gap between the winding frame and the bearing iron core is filled with silica gel.
Preferably, the bearing iron core is provided with a step groove, and the welding protective sleeve is arranged in the step groove.
The welding protective sleeve comprises a body, wherein a wire passing hole for leading out a lead wire is formed in the body, and a counter bore is formed in the periphery of the wire leading-out end of the wire passing hole. The counter bore can form solder accommodation space, and when the lead-out wire passed and welds between line hole and the PCB board, the solder can flow in the counter bore, can not cause the solder toward peripheral diffusion because of the solder is too much, avoids taking place magnetic suspension axial bearing because of short circuit, the not enough problem of creepage distance that the bad welding caused, improves magnetic suspension axial bearing's electrical safety nature.
Drawings
FIG. 1 is a first isometric view of a welding shield in accordance with an embodiment of the present invention;
FIG. 2 is a second isometric view of a welding shield according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a welding shield in accordance with an embodiment of the present invention;
FIG. 4 is a schematic perspective view of a circuit board of a magnetic suspension axial bearing according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a bearing core of a magnetically levitated axial bearing according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a half-section structure of a bearing core of a magnetic levitation axial bearing according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a winding bobbin of a magnetic suspension axial bearing according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a half-section of a winding frame of a magnetic suspension axial bearing according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of an assembly structure of a magnetic suspension axial bearing according to an embodiment of the present invention;
FIG. 10 is a schematic half-sectional view of a magnetic levitation axial bearing according to an embodiment of the present invention;
FIG. 11 is a partial enlarged view of a half-section structure of a magnetic suspension axial bearing according to an embodiment of the present invention.
The reference numerals are represented as:
1. a body; 2. a wire passing hole; 3. a counter bore; 4. a spacer section; 5. a spacing groove; 6. sinking a groove; 7. a convex column; 8. winding a bobbin; 9. a PCB board; 10. a coil; 11. an outgoing line; 12. a waist-shaped boss; 13. a bearing core; 14. mounting grooves; 15. a strip hole; 16. a step groove.
Detailed Description
Referring to fig. 1 to 11 in combination, according to an embodiment of the present invention, the welding protection sleeve includes a body 1, a through hole 2 for leading out an outgoing line 11 is disposed on the body 1, and a counter bore 3 is disposed on a peripheral side of an outgoing end of the through hole 2.
The counter bore 3 can form solder accommodation space, when the lead-out wire 11 passes and welds between wire passing hole 2 and the PCB board 9, the counter bore 3 can form sufficient solder space in PCB board 9 bottom, the solder can flow into in the counter bore 3, can not lead to the welding time long because of the bottom does not have the space, can not cause the solder to flow toward peripheral diffusion because of the solder is too much, avoid taking place magnetic suspension axial bearing because of the short circuit that the bad welding caused, the not enough problem of creepage distance, improve magnetic suspension axial bearing's electrical safety nature. The solder is, for example, solder.
In the embodiment, the wire through holes 2 include at least two, the counter bores 3 include at least two and are arranged corresponding to the wire through holes 2, and the two counter bores 3 are spaced apart by the spacer 4. The through holes 2 and the counter bores 3 can be arranged in a one-to-one correspondence manner. Preferably, the wire through holes 2 are two. Generally speaking, one coil has two outgoing lines 11, so set up two to cross wire hole 2, every crosses wire hole 2 and corresponds an outgoing line 11, can provide enough wire holes 2 for wearing out of outgoing line 11, can effectively avoid taking place the short circuit between the outgoing line 11 simultaneously. Because two counter bores 3 are separated by the spacer 4, so can increase the interval between two line holes 2 of crossing to can form spacing isolation to the solder when welding, avoid the solder to spread to the periphery more effectively.
Preferably, the spacing part 4 is provided with a spacing groove 5 for spacing the two counter bores 3, so that the creepage distance between the pads formed by the two leading-out wires 11 can be increased, and the electrical safety of the magnetic suspension axial bearing is further improved.
A sunk groove 6 is formed in the body 1 on the back side of the counter bore 3, a convex column 7 is arranged in the sunk groove 6, and the line passing hole 2 penetrates through the convex column 7. Set up heavy groove 6 on body 1, can conveniently form and cup joint the space, be convenient for realize that the welding protective sheath is fixed in the installation on winding skeleton 8. The convex column 7 can form a positioning fit with the winding framework 8, and the welding protection sleeve and the winding framework 8 are guaranteed to be in good positioning fit.
In one embodiment, only one sinking groove 6 may be provided on the body 1 at the back side of the counter bore 3, the sinking groove 6 is provided corresponding to all the wire through holes 2, and all the protruding columns 7 are located in the sinking groove 6.
In another embodiment, the sinking grooves 6 and the wire passing holes 2 may be arranged in a one-to-one correspondence manner, and one convex column 7 is correspondingly arranged in each sinking groove 6.
When the sinking groove 6 is arranged, the sinking groove 6 can be divided into a plurality of sinking grooves 6, each sinking groove 6 is arranged corresponding to at least two wire passing holes 2, the number of the wire passing holes 2 corresponding to each sinking groove 6 can be the same or different, and the sinking grooves 6 can be set according to actual requirements.
Referring to fig. 1 to 11 in combination, according to an embodiment of the present invention, the magnetic suspension axial bearing includes a winding frame 8 and a PCB 9, and further includes the above-mentioned welding protection sleeve, the welding protection sleeve is disposed between the winding frame 8 and the PCB 9, a coil 10 is wound on the winding frame 8, the coil 10 includes an outgoing line 11, and the outgoing line 11 penetrates through a line passing hole 2 of the welding protection sleeve and then is welded to the PCB 9.
Through set up welding lag between bobbin 8 and PCB board 9, can improve the product soldering tin quality, can solve simultaneously because of soldering tin time is long, soldering tin volume is too much, the electric safety problem that causes.
The winding framework 8 comprises a waist-shaped boss 12, the welding protection sleeve is sleeved on the waist-shaped boss 12, and the outgoing line 11 enters the welding protection sleeve from the waist-shaped boss 12. In this embodiment, the appearance and heavy groove 6 phase-match of waist shape boss 12, and be provided with cylindrical hole in the waist shape boss 12, the shape in cylindrical hole and the shape phase-match of projection 7, when installing the welding lag on bobbin 8, can insert the cylindrical hole of waist shape boss 12 with projection 7, thereby lead and spacing the installation of welding lag on waist shape boss 12, when waist shape boss 12 reachd heavy groove 6 position, waist shape boss 12 card is gone into in the heavy groove 6, make to form good fixed coordination between welding lag and the bobbin 8.
When the welding protection sleeve comprises the spacing groove 5, the PCB 9 is provided with a strip hole 15 corresponding to the spacing groove 5. Because the elongated hole 15 is arranged corresponding to the spacing groove 5, the bonding pads formed at the welding positions of the two outgoing lines 11 on the PCB 9 can be isolated and matched with the spacing groove 5, the creepage distance between the two bonding pads is further ensured, and the electrical safety of the magnetic suspension axial bearing is improved.
And silica gel is filled in the gap between the winding framework 8 and the bearing iron core 13.
The magnetic suspension axial bearing further comprises a bearing iron core 13, the bearing iron core 13 is provided with a mounting groove 14, and the winding framework 8 is arranged in the mounting groove 14 and is positioned between the bearing iron core 13 and the welding protective sleeve. Because winding frame 8 is contained by welding lag and bearing core 13, consequently the phenomenon of droing can not appear in the silica gel of the clearance intussuseption of winding frame 8 and bearing core 13, can not pollute compressor operational environment.
The bearing iron core 13 is provided with a step groove 16, and the welding protective sleeve is arranged in the step groove 16. Preferably, when the welding lag is installed on winding frame 8, the welding lag flushes with the top surface in step groove 16, can avoid the welding lag highly not enough and can't form effective support to PCB board 9, causes the not enough problem of PCB board 9 support, can avoid the welding lag protrusion to lead to the unable problem of effectively installing to PCB board 9 in bearing core 13's mounting surface simultaneously.
When carrying out magnetic suspension axial bearing's equipment, coil 10 has been coiled on bobbin 8 now, then dip coating, to pack into bearing core 13 around the wire winding skeleton 8 that the line was coiled and the completion was dip coated with lacquer, fill the clearance between bobbin 8 and bearing core 13 with silica gel simultaneously, will weld heavy groove 6 and bobbin 8's waist shape boss 12 and the wire hole assembly of lag bottom and put in place, later installation PCB board 9, weld outgoing line 11 and PCB board 9 together at last.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.
Claims (10)
1. A welding protective sleeve is characterized by comprising a body (1), wherein a wire through hole (2) for leading out a lead-out wire (11) is formed in the body (1), and a counter bore (3) is formed in the periphery of a wire outlet end of the wire through hole (2); the lead-out wire (11) is used for being connected with a PCB (9), and the counter bore (3) is located at the welding position of the lead-out wire (11) and the PCB (9) and forms a solder space between the lead-out wire and the PCB (9).
2. Welding shield according to claim 1, wherein said through-hole (2) comprises at least two, said counter-bores (3) comprise at least two and are arranged in correspondence of said through-hole (2), said counter-bores (3) being spaced apart by a spacer (4).
3. Welding shield according to claim 2, characterized in that said spacer (4) is provided with a spacer groove (5) which separates two of said counter bores (3).
4. Welding shield according to any one of claims 1 to 3, wherein a counter bore (6) is provided in said body (1) on the back side of said counter bore (3), a boss (7) being provided in said counter bore (6), said through-thread hole (2) extending through said boss (7).
5. Magnetic suspension axial bearing, characterized in that, includes bobbin (8) and PCB board (9), still includes the welding lag of any one of claims 1 to 4, the welding lag sets up between bobbin (8) and PCB board (9), wound coil (10) on bobbin (8), coil (10) include lead-out wire (11), lead-out wire (11) with PCB board (9) after wearing out from the line hole (2) of crossing of welding lag.
6. Magnetic suspension axial bearing according to claim 5, characterised in that the winding frame (8) comprises a waist-shaped projection (12), the welding protection sleeve is arranged on the waist-shaped projection (12), and the outgoing line (11) enters the welding protection sleeve from the waist-shaped projection (12).
7. Magnetic levitation axial bearing according to claim 5, wherein when the welding shield comprises a spacer groove (5), the PCB board (9) is provided with a strip hole (15) corresponding to the spacer groove (5).
8. The magnetic levitation axial bearing according to claim 5, further comprising a bearing core (13), the bearing core (13) having a mounting slot (14), the bobbin (8) being arranged in the mounting slot (14) and between the bearing core (13) and the welding shield.
9. The magnetic bearing according to claim 8, characterized in that the gap between the winding frame (8) and the bearing core (13) is filled with silicone.
10. The magnetic bearing according to claim 8, characterized in that the bearing core (13) is provided with a step groove (16), the welding boot being arranged in the step groove (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811161084.1A CN109099065B (en) | 2018-09-30 | 2018-09-30 | Welding protective sleeve and magnetic suspension axial bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811161084.1A CN109099065B (en) | 2018-09-30 | 2018-09-30 | Welding protective sleeve and magnetic suspension axial bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109099065A CN109099065A (en) | 2018-12-28 |
| CN109099065B true CN109099065B (en) | 2020-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811161084.1A Active CN109099065B (en) | 2018-09-30 | 2018-09-30 | Welding protective sleeve and magnetic suspension axial bearing |
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| Country | Link |
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| CN (1) | CN109099065B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882504B (en) * | 2019-04-16 | 2022-05-27 | 珠海格力电器股份有限公司 | Magnetic suspension axial bearing assembly and motor with same |
| CN109973525B (en) * | 2019-04-22 | 2024-04-19 | 珠海格力电器股份有限公司 | Stator frame, magnetic suspension axial bearing, motor and compressor |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3923696B2 (en) * | 1999-07-19 | 2007-06-06 | 株式会社荏原製作所 | Substrate rotating device |
| AT509298B1 (en) * | 2008-06-19 | 2012-01-15 | Univ Wien Tech | actuator system |
| US9318936B2 (en) * | 2010-07-21 | 2016-04-19 | Romaine Electric | Alternator stator lead and terminal insulator assembly |
| CN102420469B (en) * | 2011-12-27 | 2013-12-11 | 卧龙电气集团股份有限公司 | Directly-welded wound stator of direct current brushless motor |
| CN202585051U (en) * | 2012-04-11 | 2012-12-05 | 广州华成电器股份有限公司 | Lead structure for dry type transformer |
| CN203366942U (en) * | 2013-06-20 | 2013-12-25 | 天津维可特电力科技有限公司 | Welding structure of high-voltage winding wiring terminal of dry type transformer |
| CN203840142U (en) * | 2014-04-30 | 2014-09-17 | 中山大洋电机股份有限公司 | Plastic packaging electric machine |
| CN205190531U (en) * | 2015-12-11 | 2016-04-27 | 珠海格力节能环保制冷技术研究中心有限公司 | Magnetic suspension bearing skeleton and magnetic suspension bearing |
| CN105317839A (en) * | 2015-12-14 | 2016-02-10 | 珠海格力节能环保制冷技术研究中心有限公司 | Magnetic bearing stator component and preparation method thereof |
| CN205879212U (en) * | 2016-06-16 | 2017-01-11 | 常州市磊晨电器有限公司 | Sensor seat lid |
| CN106300758A (en) * | 2016-10-24 | 2017-01-04 | 珠海格力电器股份有限公司 | Insulating sheath, stator module and adopt its motor |
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- 2018-09-30 CN CN201811161084.1A patent/CN109099065B/en active Active
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| Publication number | Publication date |
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| CN109099065A (en) | 2018-12-28 |
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