CN1274190A - Brushless motor - Google Patents
Brushless motor Download PDFInfo
- Publication number
- CN1274190A CN1274190A CN 00106495 CN00106495A CN1274190A CN 1274190 A CN1274190 A CN 1274190A CN 00106495 CN00106495 CN 00106495 CN 00106495 A CN00106495 A CN 00106495A CN 1274190 A CN1274190 A CN 1274190A
- Authority
- CN
- China
- Prior art keywords
- support
- core
- housing
- electronic device
- brushless motor
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 18
- 230000000694 effects Effects 0.000 abstract description 11
- 230000002093 peripheral effect Effects 0.000 abstract description 8
- 238000003780 insertion Methods 0.000 abstract description 6
- 230000037431 insertion Effects 0.000 abstract description 6
- 230000017525 heat dissipation Effects 0.000 abstract 3
- 238000004804 winding Methods 0.000 abstract 3
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 10
- 230000004888 barrier function Effects 0.000 description 7
- 238000001816 cooling Methods 0.000 description 7
- 244000287680 Garcinia dulcis Species 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Images
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- Brushless Motors (AREA)
- Motor Or Generator Cooling System (AREA)
- Motor Or Generator Frames (AREA)
Abstract
To achieve high heat dissipation effect by providing a plurality of protrusions and recesses at the fitting part of a core applied with a winding and a housing thereby ensuring a large heat dissipation area for the winding and electronic components. A core 3 is provided with a plurality of protrusions and recesses on the inner peripheral surface thereof and applied with a winding 5 through an insulating layer 4 to constitute a stator. A housing 2 is provided with same number of protrusions and recesses at the part to be fitted with the core so that the housing 2 and the core 3 are secured each other by meshing the protrusions and the recesses. When a current is fed through the wire, heat is generated and dissipated through the core to the housing. In this regard, the thermal resistance is decreased the protrusions and recesses provided at the fitting part increase the contact area between the core and the housing. When the outer diameter of the plurality of protrusions of housing is set smaller 2a at the start of insertion of core than that 2b at the end of insertion of core, and the inner diameter of the recess of core is set larger at the start of insertion of housing than that at the end of insertion of housing and tapered, the contact area can be increased furthermore. This structure realizes high heat dissipation effect.
Description
The application is that application number is 95100783.1, name is called the dividing an application of application for a patent for invention of " brushless motor ".
The present invention relates to the structure of brushless motor used in the office automation equipment such as plain paper copier machine, printer.
In recent years, along with user's demand, office automation equipment high-performance and miniaturizations day by day such as plain paper copier machine, printer, and also along with the individual customizations of these equipment, the user is desirable to provide cheap commodity.
In the face of such market situation, the brushless motor that uses as office automation device drives source is also required to provide the commodity of high-output power, miniaturization, low price.
Below be illustrated with regard to the structure of existing brushless motor.
Figure 12 that the back will be mentioned has shown the structure of existing brushless motor.In this Figure 12, the 2nd, support, it is supporting bearing 13 and 14.1 is dull and stereotyped, supports printed circuit board (PCB) 9, and is supporting support 2 by clinching method.3 is unshakable in one's determination, and coil 5 is around on unshakable in one's determination 3 through insulating barrier 4 and constitutes stator.The 10th, screw, unshakable in one's determination 3 connect and are fastened onto on the support 2, and stator and support 2 are fixed.The 6th, armature spindle is pressed into rotor frame 7 (this rotor frame 7 is bonding to support the magnet that are located at unshakable in one's determination 3 peripheral direction with leaving the space) fixing, and is adhesively fixed on the interior ring of bearing 13 that outer shroud is supported by support 2 and 14.The 8th, electronic device is secured in a press on the fin 15 and be installed on the printed circuit board (PCB) 9 by screw 11.
Action to the brushless motor that constitutes by above-mentioned structure is illustrated below.At first, through being installed on electronic device on the printed circuit board (PCB) to the coil supplying electric current, because of electromagnetic action magnetic field takes place being wound with in the iron core of coil.This magnetic field and with the magnetic field of the magnet that is provided with in opposite directions unshakable in one's determination between take place to repel and attraction, supporting the rotor frame of magnet and armature spindle and making one and rotate.In addition, be positioned at the heating of electronic device on the above-mentioned current paths and coil and electric current with being in proportion.The heat that is taken place by electronic device has passed through the fin that electronic device compresses and has dispelled the heat, and the heat that is taken place by coil then passes through support, passes through support, bearing, armature spindle again from flat board, dispel the heat from rotor frame.
Yet when adopting existing structure as described above, following problem is arranged, that is, because the surface area of support is limited, and the size of the fin that compresses with electronic device is also limited, thereby can't further increase electric current in order to obtain high output.
Purpose of the present invention promptly is to provide a kind of brushless motor of minitype high-performance, and it can solve the above problems, and increases the heat conduction efficiency of coil and electronic device, and obtains bigger cooling effect with fan when guaranteeing big area of dissipation.
In order to achieve the above object, on the brushless motor of the present invention electronic device is housed, is characterized in, electronic device is rack-mount in the mode of the support of an one end face contact supporting rotor, following several structure is specifically arranged, that is, in root diameter, electronic device is fixed on support; Or be fixed on support and the rubber-like mounting panel as electronic device being fixed as sandwiching.
Adopt above structure, the heat that electronic device took place that is arranged in the root diameter also can conduct effectively to support and heat radiation.
Below to accompanying drawing simple declaration in addition.
Fig. 1 is the brushless motor key diagram of the present invention the 1st, the 2nd embodiment.
Fig. 2 is the brushless motor key diagram of the present invention the 3rd embodiment.
Fig. 3 is the brushless motor key diagram of the present invention the 4th embodiment.
Fig. 4 is the rotor frame stereogram of the present invention the 4th embodiment.
Fig. 5 is the brushless motor key diagram of the present invention the 5th embodiment.
Fig. 6 is the brushless motor key diagram of the present invention the 6th embodiment.
Fig. 7 is the brushless motor key diagram of the present invention the 7th embodiment.
Fig. 8 is the brushless motor key diagram of the present invention the 8th embodiment.
Fig. 9 is the brushless motor key diagram of the present invention the 9th embodiment.
Figure 10 is the brushless motor half sectional view of the present invention the 9th embodiment.
Figure 11 is the brushless motor key diagram of the present invention the 10th embodiment.
Figure 12 is the brushless motor key diagram of existing embodiment.
Below in conjunction with description of drawings the 1st, the 2nd embodiment of the present invention.
In Fig. 1, the 3rd, internal diameter is provided with the iron core of some jogs, is wound with coil 5 through insulating barrier 4, constitutes stator.The 2nd, the auxiliary section between support, it and iron core is provided with the jog with internal diameter equal number unshakable in one's determination, and the protuberance of iron core is corresponding with the recess of support, and the recess of iron core is corresponding with the protuberance of support, under this state iron core 3 is being inserted and is being fixed on the support 2.
In the brushless motor of more than adopting, constructing, coil generates heat pro rata with the size of current that flows through coil, and the heat that takes place is given support through heat radiation unshakable in one's determination, at this moment, because the auxiliary section with support unshakable in one's determination is provided with jog, so the contact area with support unshakable in one's determination increases, thermal resistance reduces, so can obtain bigger radiating effect.
In addition, by the jog that cooperates with support at iron core, make the external diameter 2a at top of the insertion iron core of several set on support protuberances insert the external diameter 2b of terminal unshakable in one's determination less than it, and the internal diameter at the top of the insertion support of set recess is greater than its internal diameter that inserts the terminal of support in unshakable in one's determination, be that the auxiliary section is tapered, thereby can make iron core bigger than the 1st embodiment, can obtain bigger radiating effect with the contact area of support.
Below in conjunction with description of drawings the 3rd embodiment of the present invention.
In Fig. 2,2 is support, is provided with into the fin 2c of concaveconvex shape, and is supporting bearing 13,14 and printed circuit board (PCB) 9.The 3rd, unshakable in one's determination, be wound with coil 5 through insulating barrier 4, constitute stator.The 10th, screw, 3 quilts unshakable in one's determination connect to be anchored on the support 2 and with stator and support 2 and are fixed.The 6th, armature spindle is pressed into the bonding rotor frame 7 that leaves the magnet that ground, space is provided with in unshakable in one's determination 3 peripheral direction that supporting fixing, and is adhesively fixed on the interior ring of bearing 13 that outer shroud is supported by support 2 and 14.The 8th, electronic device is secured in a press on the fin 15 and be installed on the printed circuit board (PCB) 9 by screw 11.
In the brushless motor of structure, coil generates heat pro rata with the size of current that flows through coil more than adopting, and the heat of generation dispels the heat from support through unshakable in one's determination, at this moment, because support is provided with the concave-convex fin, thereby can increase the area of dissipation of support, can obtain big radiating effect.
Below in conjunction with description of drawings the 4th, the 5th embodiment of the present invention.
In Fig. 3, Fig. 4, the 2nd, support, block bearing 13 and 14.The 1st, dull and stereotyped, supporting printed circuit board (PCB) 9, and by riveted joint supporting bracket 2.The 3rd, unshakable in one's determination, be wound with coil 5 through insulating barrier 4, constitute stator.The 10th, screw, unshakable in one's determination 3 connect.Be anchored on the support 2 and and be fixed stator and support 2.The 6th, armature spindle, leave the magnet that ground, space is provided with and have the rotor frame 7 of some thorn sheet 7a that upwards dig to be pressed into bonding the supporting fixing in unshakable in one's determination 3 peripheral direction, and be adhesively fixed on the interior ring of bearing 13 that outer shroud is being supported by support 2 and 14 at the top excavation.
The 8th, electronic device is secured in a press on the fin 15 and be installed on the printed circuit board (PCB) 9 by screw 11.
Fig. 4 is the stereogram of rotor frame 7, and 7a is several thorn sheets of upwards digging of being located at the rotor frame top.
In the brushless motor of more than adopting, constructing, because rotor frame rotates in a direction indicated by the arrow, by fan and be located at and turn over the thorn sheet on several of rotor frame top extraneous air is sucked in the rotor frame, and make coil, iron core, stent cools by the coil in rotor frame, iron core, support air-supply.
In addition, in Fig. 5, by fan attachment 12 on the armature spindle 6 and make fan 12 and the end face of rotor frame 7 between leave the space, can increase the amount that sucks the extraneous air in the rotor frame, can obtain bigger cooling effect.
Below in conjunction with description of drawings the 6th embodiment of the present invention.
In Fig. 6, the 2nd, have the support of hole 2a, supporting bearing 13 and 14 and the printed circuit board (PCB) 9 that has hole 9a.The 3rd, unshakable in one's determination, be wound with coil 5 through insulating barrier 4, constitute stator.The 10th, screw, 3 perforations unshakable in one's determination are anchored on the support 2, and stator and support 2 are fixed.The 6th, armature spindle, leave the magnet that ground, space is provided with and have the rotor frame 7 of some thorn sheet 7a that upwards dig to be pressed into bonding the supporting fixing in unshakable in one's determination 3 peripheral direction, and be fixed on the interior ring of bearing 13 that outer shroud supported by support 2 and 14 at the top excavation.
In the brushless motor of more than adopting, constructing, because the rotation of rotor frame, extraneous air is inhaled in the rotor frame through turning over thorn sheet mouth on the top, coil in rotor frame, iron core, support air-supply, discharge to the motor outside by the hole and the bracket holes of printed circuit board (PCB) the cooling back.
Below in conjunction with description of drawings the present invention the 7th embodiment.
In Fig. 7, the 3rd, around the iron core of coil, the 2nd, support, supporting unshakable in one's determination and printed circuit board (PCB) 9 and bearing 13 and 14.The 6th, armature spindle is fixed the bonding rotor frame 7 that is supporting the magnet of setting up in the peripheral direction of iron core with leaving the space, and is fixed on the interior ring of bearing 13 that outer shroud supported by support 2 and 14.The 8th, electronic device is fixed on support in the drop shadow spread of rotor frame 7.
In the brushless motor of more than adopting, constructing, electronic device generates heat with the electric current that flows through coil with being in proportion, and the heat that takes place dispels the heat from support, thereby do not need to resemble and fin is set the embodiment in the past, because electronic device is arranged in the root diameter, can realize motor miniaturization in addition.
Below in conjunction with description of drawings the 8th embodiment of the present invention.
In Fig. 8,8a is the end face of electronic device 8, join with support 2, and the 17th, the rubber-like mounting panel joins with the end face 8b of electronic device comprehensively, and is fixed on support by screw 11.
In the brushless motor that adopts above structure, the end face and the support of electronic device join, and another end face passes through mounting panel and is pressed on the support, so the thermal resistance of electronic device and support is less, can obtain bigger radiating effect.
Below in conjunction with description of drawings the 9th embodiment of the present invention.
In Fig. 9, Figure 10, the 2nd, support, block bearing 13 and 14.The 1st, dull and stereotyped, supporting printed circuit board (PCB) 9, and by riveted joint supporting bracket 2.The 3rd, unshakable in one's determination, be wound with coil 5 through insulating barrier 4, constitute stator.The 10th, screw, 3 perforations unshakable in one's determination are anchored on the support 2, and stator and support 2 are fixed.The 6th, armature spindle leaves bonding the supporting rotor frame 7 of the magnet that ground, space is provided with and fan 12 in unshakable in one's determination 3 peripheral direction and is pressed into fixingly, and is fixed on the interior ring of bearing 13 that outer shroud supported by support 2 and 14.The 8th, several electronic devices equally spaced being provided with from the rotor frame periphery are secured in a press on fin 15 by screw 11, and are installed on the printed circuit board (PCB) 9.
In the brushless motor of more than adopting, constructing, be positioned at the heating of electronic device on the electric current stream and electric current with being in proportion, and the heat that takes place dispels the heat through fin, and then make electronic device and fin cooling by being fixed in fan on the armature spindle, at this moment, because electronic device and fin are with on the circumference that uniformly-spaced is arranged on the rotor frame periphery of being separated by, so can be by the bigger cooling effect of fan acquisition.
Below in conjunction with description of drawings the 10th embodiment of the present invention.
In Figure 11, the 2nd, support, block bearing 13 and 14.The 1st, dull and stereotyped, supporting printed circuit board (PCB) 9, and by riveted joint supporting bracket 2.The 3rd, unshakable in one's determination, be wound with coil 5 through insulating barrier 4, constitute stator.The 10th, screw, 3 perforations unshakable in one's determination are anchored on the support 2, and stator and support 2 are fixed.The 6th, armature spindle is provided with bonding the supporting in the rotor frame 7 of magnet and fan 12 in 3 peripheral direction unshakable in one's determination with leaving the space and is pressed into fixingly, and is fixed on the interior ring of bearing 13 that outer shroud supported by support 2 and 14.The 8th, electronic device is secured in a press on metal rotor cap 16 by screw 11, and is installed on the printed circuit board (PCB) 9.
In the brushless motor of more than adopting, constructing, the electronic device and the size of current that are positioned on the electric current stream are generated heat pro rata, the heat that takes place dispels the heat through rotor cap, and then directly rotor cap is cooled off by the fan that is fixed on the armature spindle, can obtain bigger cooling effect.
As mentioned above, the present invention is by adopting following structure, that is, be provided with some concavo-convexly in the auxiliary section of iron core that is wound with coil and support, and these several protuberances are taper, promptly inserts the varying in size of protuberance of the top of described iron core and terminal; Or the fin of concaveconvex shape is set on support; Or excavate the thorn sheet that several are upwards dug at the rotor frame top, and fan attachment on the armature spindle and make it and the rotor frame top between keep a fixed gap; Or perforate is as the circulation flow path of air on support; Or in root diameter, electronic device is fixed on support; Or as being sandwiched, electronic device is fixed by being fixed resilient mounting panel on support; Or leaving by the formed air flow circuit of fan that is fixed on the armature spindle is that rotor frame periphery equal gap disposes several electronic devices; Or electronic component is fixed on rotor cap, and leaves on this rotor cap to allow and be fixed in the hole that the armature spindle on the support connects; By said structure, can provide excellent brushless motor; It can and guarantee in the heat conduction efficiency that increases coil and electronic device to obtain bigger cooling effect by fan in the big area of dissipation, thereby can further increase current flow for obtaining high-output power.
Claims (3)
1. a brushless motor is equipped with electronic device on it, it is characterized in that, described electronic device is installed on the described support in the mode of the support of an one end face contact supporting rotor.
2. brushless motor according to claim 1 is characterized in that, through around on the support of the iron core of coil and bearing and supporting rotor, electronic device is fixed in described stator diameter.
3. brushless motor according to claim 1, it is characterized in that, with through around the iron core of coil and bearing and supporting rotor support and be fixed on described support and flexible and with the mounting panel of electronic device mold pressing end surface comprehensive engagement, be fixed as electronic device sandwiched.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3128994A JPH07245925A (en) | 1994-03-01 | 1994-03-01 | Brushless motor |
| JP31289/1994 | 1994-03-01 | ||
| JP31289/94 | 1994-03-01 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95100783A Division CN1064186C (en) | 1994-03-01 | 1995-02-13 | Brushless motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1274190A true CN1274190A (en) | 2000-11-22 |
| CN1291540C CN1291540C (en) | 2006-12-20 |
Family
ID=12327156
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00106495 Expired - Fee Related CN1291540C (en) | 1994-03-01 | 1995-02-13 | Brushless motor |
| CN95100783A Expired - Fee Related CN1064186C (en) | 1994-03-01 | 1995-02-13 | Brushless motor |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95100783A Expired - Fee Related CN1064186C (en) | 1994-03-01 | 1995-02-13 | Brushless motor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH07245925A (en) |
| CN (2) | CN1291540C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104052226A (en) * | 2013-03-15 | 2014-09-17 | 日本电产株式会社 | Dc Brushless Motor |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1308297B1 (en) * | 1999-09-13 | 2001-12-10 | Volpi S R L | PERMANENT MAGNET SYNCHRONOUS MOTOR FOR LIFT WINCHES |
| JP2004274838A (en) * | 2003-03-06 | 2004-09-30 | Matsushita Electric Ind Co Ltd | Wheel drive system |
| JP6372651B2 (en) * | 2014-04-11 | 2018-08-15 | 日本電産株式会社 | Self-cooling motor |
| CN105337449A (en) * | 2014-06-23 | 2016-02-17 | 苏州科沃斯商用机器人有限公司 | Direct-current permanent-magnet brushless motor |
| JP6413866B2 (en) * | 2015-03-20 | 2018-10-31 | スズキ株式会社 | Axial gap type rotating electrical machine |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5563549A (en) * | 1978-11-04 | 1980-05-13 | Fanuc Ltd | Cooling device for rotary electric machine |
| CN86209409U (en) * | 1986-11-10 | 1987-12-16 | 湘潭大学 | Y series motor hot tube cooling system |
| JP2599210B2 (en) * | 1990-03-30 | 1997-04-09 | 株式会社テック | Blower |
-
1994
- 1994-03-01 JP JP3128994A patent/JPH07245925A/en active Pending
-
1995
- 1995-02-13 CN CN 00106495 patent/CN1291540C/en not_active Expired - Fee Related
- 1995-02-13 CN CN95100783A patent/CN1064186C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104052226A (en) * | 2013-03-15 | 2014-09-17 | 日本电产株式会社 | Dc Brushless Motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1110840A (en) | 1995-10-25 |
| JPH07245925A (en) | 1995-09-19 |
| CN1291540C (en) | 2006-12-20 |
| CN1064186C (en) | 2001-04-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: MEIWA MOTOR CO., LTD. Free format text: FORMER OWNER: MATSUSHITA ELECTRIC INDUSTRIAL CO, LTD. Effective date: 20100809 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: OSAKA-FU, JAPAN TO: TOKYO, JAPAN |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100809 Address after: Tokyo, Japan Patentee after: Meiwa Motor Co., Ltd. Address before: Osaka Japan Patentee before: Matsushita Electric Industrial Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061220 Termination date: 20120213 |