CN102684027B - Brushless liquid commutator - Google Patents
Brushless liquid commutator Download PDFInfo
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- CN102684027B CN102684027B CN201210180619.6A CN201210180619A CN102684027B CN 102684027 B CN102684027 B CN 102684027B CN 201210180619 A CN201210180619 A CN 201210180619A CN 102684027 B CN102684027 B CN 102684027B
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- swiveling wheel
- commutator
- rotating wheel
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Abstract
A brushless liquid commutator belongs to the technical field of DC motor devices, is used for achieving the reversion of a DC motor, and adopts the technical scheme as follows: the brushless liquid commutator comprises a fixing sleeve, a rotating wheel, reversing boxes, conductive poles and conductive sheets; both the fixing sleeve and the rotating wheel are circular ring-shaped, and the rotating wheel is sleeved in the fixing sleeve; the reversing boxes are embedded into the inner circumferential wall of the fixing sleeve; conductive liquid is fully filled in the reversing boxes; the box face sections of the reversing boxes, which are opposite to the rotating wheel, are opened; the conductive liquid is in contact with the outer wall of the rotating wheel; the box bodies of the reversing boxes are provided with a sealing unit; the conductive poles are respectively connected with the reversing boxes and a power supply; the conductive sheets are mounted on the rotating wheel; the outer edges of the conductive sheets are flush with the outer circumferential wall of the rotating wheel; the rotating wheel is in coaxial connection with a rotator of the DC motor; and the conductive sheets are connected with the coil of the rotator. The brushless liquid commutator provided by the invention substitutes a conventional electrical brush commutator, avoids various defects caused by the abrasion of an electric brush, overcomes the defects of a brushless motor adopting a switch tube simultaneously, and belongs to a new DC motor commutator technique.
Description
Technical field
The present invention relates to a kind of DC motor commutator, belong to direct current machine equipment technical field.
Background technology
Direct current machine is all widely used in all trades and professions such as industry, agricultural, traffic, buildings, and in some special technical field of motors, direct current machine is more because its unique performance has irreplaceable effect.Particularly current, along with the raising of technology, electric automobile has been obtained substantial progress, enters commercial market within sight.The development of electric automobile is larger to the demand of high performance direct current machine, and this just requires direct current machine to update, and meets the needs in market with higher level.All the time, the link that DC motor is the weakest is exactly brush, the situation that brush the most easily occurs is wearing and tearing, after wearing and tearing, can only change brush, change for several times rear commutator pad wear and can cause loose contact, also will again use machined into commutator, after being worked into a certain degree, will scrap by commutator, and the defect such as efficiency is low, and resistance value is large, can say that brush has directly determined the performance of DC motor.In order to overcome the shortcoming of brush, technical staff has developed brshless DC motor, and this motor will add controller, controls the running of motor by the break-make of switching tube.Although this motor has been cancelled commutator, add that controller has directly increased cost, and can not make powerful especially direct current machine, in the time meeting high-tension impact, switching tube likely damages and causes motor not rotate.And this brushless motor can only reach the performance of shunt excitation or separately excited motor, if it is also more difficult to reach the performance of series excitation or compound motor.Meanwhile, what is more important, large-scale switching tube and cost are high, and it is too large that large-scale dc motor exploitation becomes brshless DC motor difficulty, and this brushless electric machine can't be satisfied the demand at present.
Technical problem to be solved by this invention is to provide a kind of brushless liquid commutator, this commutator can be avoided the wear of brush of direct current machine, also avoid existing brushless electric machine to need the shortcoming of switching tube, can realize with lower cost, solved the problem of DC motor commutator.
The technical scheme solving the problems of the technologies described above is:
A kind of brushless liquid commutator, it is by fixed cover, swiveling wheel, Commutating box, conductive electrode, conducting strip composition, fixed cover and swiveling wheel are torus, swiveling wheel is arranged in fixed cover, the outer circle wall of swiveling wheel and the inner peripheral wall of fixed cover are sliding contact, Commutating box is embedded on the inner peripheral wall of fixed cover, in Commutating box, there is conduction liquid, the box body surface that Commutating box is relative with swiveling wheel is opening, conduction liquid contacts with the outer wall of swiveling wheel, the box body that Commutating box contacts with swiveling wheel has sealing device, one end of conductive electrode is connected with Commutating box, the other end is connected with power supply, conducting strip is arranged on swiveling wheel, swiveling wheel is connected or is arranged on armature spindle with DC motor rotor is coaxial, conducting strip is connected with rotor coil.
Above-mentioned brushless liquid commutator, described Commutating box is 2-10, is embedded in respectively on fixed cover, and Commutating box is connected with conductive electrode respectively, and conducting strip is 4-60, along swiveling wheel circumference uniform distribution.
Above-mentioned brushless liquid commutator, described Commutating box is a circular or circular part, be sleeved on fixed cover inwall, very 1 of conduction, be connected with Commutating box, conducting strip is annulus, is arranged on the excircle of swiveling wheel, the outer circumference surface of conducting strip contacts with the conduction liquid of the opening part of Commutating box, and the box body that Commutating box contacts with conducting strip has sealing device.
Above-mentioned brushless liquid commutator, described sealing device is the self-lubricating property sealing of polyether-ether-ketone, or seal lip sealing, and seal lip sealing comprises seal lip, dustproof lip, spring, spring compression is in seal lip, and friction position is used self-lubricating material.
Usefulness of the present invention is:
1. to adopt liquid commutator to replace traditional brush-commutated in the present invention, all drawbacks of having avoided wear of brush to bring, liquid commutator has also avoided adopting the shortcoming of the brushless electric machine of switching tube simultaneously, a kind of new DC motor commutator technology, the continuous progress of this liquid commutator and improve will open up the chapter that DC motor technology is new.
2. the life-span is long.The present invention, because use liquid reverse flow technique, only has relative contact between liquid and moving component, current segment does not exist friction.The main happening part that rubs is exactly the friction between fixed cover and swiveling wheel running.It is suitable only need to process, and friction will reduce significantly, thereby can have the very long life-span.
3. volume is little, lightweight.Record according to related documents, between common commutator and brush, find with electron microscope observation, brush is to be contacted by numerous point with commutator contact-making surface, and general contact-making surface only has the some thousandths of left and right of the brush gross area.The size of contact area, is decided by factors such as the pressure sizes on material, the brush of the hardness of the rotating speed of motor, commutator material, machining accuracy, deflection degree, brush.And the present invention adopt be that liquid contacts with the direct of solid, contact area reaches 100%.Make the volume-diminished of commutator a lot.
4. low, the handling ease of cost.The present invention has very little volume, saves a large amount of materials.And handling ease, save a large amount of labours, thereby can accomplish very low cost.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is another kind of structural representation of the present invention;
Fig. 4 is a kind of sealing device schematic diagram of the present invention;
Fig. 5 is perspective view of the present invention.
Number in the figure is as follows: conductive electrode 1, Commutating box 2, fixed cover 3, swiveling wheel 4, conducting strip 5, sealing device 6, seal lip 7, dustproof lip 8, spring 9.
Embodiment
Brushless liquid commutator of the present invention is made up of fixed cover 3, swiveling wheel 4, Commutating box 2, conductive electrode 1, conducting strip 5.
In figure, show, fixed cover 3 and swiveling wheel 4 are torus, swiveling wheel 4 is sleeved in fixed cover 3, the inner peripheral wall of the outer circle wall of swiveling wheel 4 and fixed cover 3 is sliding contact, swiveling wheel 4 can be in the interior rotation of fixed cover 3, swiveling wheel 4 is connected or is arranged on armature spindle with DC motor rotor is coaxial, can rotate together with DC motor rotor.
In figure, show, Commutating box 2 is embedded on the inner peripheral wall of fixed cover 3, in Commutating box 2, be full of conduction liquid, the box body surface that Commutating box 2 is relative with swiveling wheel 4 is opening, conduction liquid contacts with swiveling wheel 4 outer walls, the box body that Commutating box 2 contacts with swiveling wheel 4 has sealing device 6, and in the time that swiveling wheel 4 rotates, conduction liquid can not flow out.
In figure, show, conductive electrode 1 is connected with Commutating box 2 through fixed cover 3, and the other end of conductive electrode 1 is connected with power supply, and electric current is received conduction liquid by conductive electrode 1.Meanwhile, conducting strip 5 is arranged on swiveling wheel 4, and the outward flange of conducting strip 5 is circular arc, flushes with the outer circle wall of swiveling wheel 4, and conducting strip 5 is connected with rotor coil.In the time that swiveling wheel 4 rotates, when forwarding Commutating box 2 position to, conducting strip 5 contacts with conduction liquid, and the electric current of conductive electrode 1 is guided to rotor coil.
In figure, show, Commutating box 2 of the present invention and conducting strip 5 have two kinds of structures.
Be Fig. 1,2 multiple Commutating boxs 2 and multiple conducting strip 5 structures that show, the Commutating box 2 of this structure is 2-10, is embedded in respectively on fixed cover 3, and Commutating box 2 is connected with conductive electrode 5 respectively, and conducting strip is 4-60, along swiveling wheel 4 circumference uniform distributions.Conducting strip 5 has tens under normal circumstances, if large-scale having is up to a hundred individual, and all should be within protection scope of the present invention.
Another kind of structure is that Commutating box 2 is a circular or circular part, be sleeved on fixed cover 3 inwalls, conductive electrode 1 is 1, be connected with Commutating box 2, conducting strip 5 is annulus, be arranged on the excircle of swiveling wheel 4, the outer circumference surface of conducting strip 5 contacts with the conduction liquid of the opening part of Commutating box 2, and the box body that Commutating box 2 contacts with conducting strip 5 has sealing device 6.
In figure, show, sealing device of the present invention is the key that realizes liquid commutation, make good seal, and conduction liquid can not be revealed, and will ensure that Commutating box 2 and swiveling wheel 4 relatively rotate brisk simultaneously, and frictional resistance is little.Sealing device 6 can adopt the self-lubricating property sealing of polyether-ether-ketone, or seal lip sealing, and seal lip sealing comprises seal lip 7, dustproof lip 8, spring 9, and spring 9 is pressed in seal lip 7, and friction position is used self-lubricating material.
Operation principle of the present invention is:
When the first structure, electric current flows into from conductive electrode 1, flows into conducting strip 5 by the conduction liquid of Commutating box 2, conducting strip 5 is connected with rotor coil, electric current flows out from corresponding conducting strip 5 after by rotor coil, by the conduction liquid of another Commutating box 2, flows out through another conductive electrode 1.In the time that swiveling wheel 4 rotates, conducting strip 5 contacts with conduction liquid successively, thereby makes the DC motor can continuous running.
When the second structure, conductive electrode only has 1, and the conducting strip 5 on swiveling wheel 4 is as a whole.In the time that swiveling wheel 4 rotates, conducting strip 5 is connected with conductive electrode 1 all the time always, and its Main Function is applied to wound-rotor motor, DC motor, generator.
Claims (3)
1. a brushless liquid commutator, it is characterized in that: it is by fixed cover (3), swiveling wheel (4), Commutating box (2), conductive electrode (1), conducting strip (5) composition, fixed cover (3) and swiveling wheel (4) are torus, swiveling wheel (4) is arranged in fixed cover (3), the inner peripheral wall of the outer circle wall of swiveling wheel (4) and fixed cover (3) is sliding contact, Commutating box (2) is embedded on the inner peripheral wall of fixed cover (3), Commutating box has conduction liquid in (2), the box body surface that Commutating box (2) is relative with swiveling wheel (4) is opening, conduction liquid contacts with swiveling wheel (4) outer wall, the box body that Commutating box (2) contacts with swiveling wheel (4) has sealing device (6), conductive electrode (1) one end is connected with Commutating box (2), the other end is connected with power supply, conducting strip (5) is arranged on swiveling wheel (4), swiveling wheel (4) is connected or is arranged on armature spindle with DC motor rotor is coaxial, conducting strip (5) is connected with rotor coil.
2. brushless liquid commutator according to claim 1, it is characterized in that: described Commutating box (2) is 2-10, is embedded in respectively fixed cover (3) upper, and Commutating box (2) is connected with conductive electrode (1) respectively, conducting strip (5) is 4-60, along swiveling wheel (4) circumference uniform distribution.
3. brushless liquid commutator according to claim 1 and 2, it is characterized in that: described sealing device (6) is the self-lubricating property sealing of polyether-ether-ketone, or seal lip sealing, seal lip sealing comprises seal lip (7), dustproof lip (8), spring (9), it is upper that spring (9) is pressed on seal lip (7), and friction position is used self-lubricating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210180619.6A CN102684027B (en) | 2012-06-04 | 2012-06-04 | Brushless liquid commutator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210180619.6A CN102684027B (en) | 2012-06-04 | 2012-06-04 | Brushless liquid commutator |
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| Publication Number | Publication Date |
|---|---|
| CN102684027A CN102684027A (en) | 2012-09-19 |
| CN102684027B true CN102684027B (en) | 2014-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210180619.6A Active CN102684027B (en) | 2012-06-04 | 2012-06-04 | Brushless liquid commutator |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105449484B (en) * | 2014-08-28 | 2017-11-21 | 中国航发商用航空发动机有限责任公司 | Slip ring electrical feedthrough and engine |
| CN109755835A (en) * | 2019-03-07 | 2019-05-14 | 江苏利丰机电有限公司 | A kind of self-lubricating mechanical commutator |
| CN112186981A (en) | 2019-07-02 | 2021-01-05 | 福特全球技术公司 | Current transmission device for motor, motor with current transmission device and vehicle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4420704A (en) * | 1980-10-23 | 1983-12-13 | Mabuchi Motor Co., Ltd. | Small electric motor |
| CN101369708A (en) * | 2008-09-22 | 2009-02-18 | 张浩宇 | Production method of graphite plane commutator |
| CN102255215A (en) * | 2011-04-29 | 2011-11-23 | 万海潮 | Manufacturing process of carbon commutator |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07118352B2 (en) * | 1988-04-08 | 1995-12-18 | 防衛庁技術研究本部長 | Brushless signal transmission device for cable hoist |
| JPH07303353A (en) * | 1994-04-28 | 1995-11-14 | Sankyo Seiki Mfg Co Ltd | Small-sized motor |
| JPH09107660A (en) * | 1995-10-07 | 1997-04-22 | Mabuchi Motor Co Ltd | Small motor |
-
2012
- 2012-06-04 CN CN201210180619.6A patent/CN102684027B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4420704A (en) * | 1980-10-23 | 1983-12-13 | Mabuchi Motor Co., Ltd. | Small electric motor |
| CN101369708A (en) * | 2008-09-22 | 2009-02-18 | 张浩宇 | Production method of graphite plane commutator |
| CN102255215A (en) * | 2011-04-29 | 2011-11-23 | 万海潮 | Manufacturing process of carbon commutator |
Non-Patent Citations (3)
| Title |
|---|
| JP平1-260774A 1989.10.18 |
| JP特开平7-303353A 1996.11.14 |
| JP特开平9-107660A 1997.04.22 |
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| CN102684027A (en) | 2012-09-19 |
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Address after: 054000, No. 168, South Third Ring Road, Xingtai Development Zone, Hebei Patentee after: Hebei top technology Co., Ltd. Address before: 054000, No. 168, South Third Ring Road, Xingtai Development Zone, Hebei Patentee before: Hebei Shouli Explosion-Proof Motor Co., Ltd. |