CN87105453A - Brushgear - Google Patents
Brushgear Download PDFInfo
- Publication number
- CN87105453A CN87105453A CN198787105453A CN87105453A CN87105453A CN 87105453 A CN87105453 A CN 87105453A CN 198787105453 A CN198787105453 A CN 198787105453A CN 87105453 A CN87105453 A CN 87105453A CN 87105453 A CN87105453 A CN 87105453A
- Authority
- CN
- China
- Prior art keywords
- brush arm
- mentioned
- brush
- guide bracket
- brushgear
- 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.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/14—Means for supporting or protecting brushes or brush holders
- H02K5/143—Means for supporting or protecting brushes or brush holders for cooperation with commutators
- H02K5/146—Pivotally supported brushes or brush holders
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/38—Brush holders
- H01R39/39—Brush holders wherein the brush is fixedly mounted in the holder
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Current Collectors (AREA)
Abstract
The brushgear of motor, comprise the brush arm guide bracket that is arranged on the cap, be used for producing the carbon brush of sliding contact with commutator, one end has carbon brush, the other end by the rotatably mounted brush arm of brush arm guide bracket, by the rotatably mounted brush arm duct ring of brush arm guide bracket, be installed on that spring fixed seat on the cap contacts with spring fixed seat with an end and spring that the other end contacts with brush arm, the arm of brush arm is done fully firmly; In the shape of cross section of brush arm duct ring and brush arm guide bracket contact portion, the brush arm duct ring respectively has two crossing tangent lines, and therefore, the electric power of supplying with carbon brush is not by the brush arm guide bracket, but by the independent conducting element that is provided with.
Description
The present invention relates to be used for the brushgear of a motor, this motor by motor field frame of supporting excitation part and above brushgear is housed a cap engage and constitute, wherein by thereby the brush arm of supporting brush such as is done at the firm fully variation that prevents brush position, and the electric power of supplying with carbon brush is not by supporting the brush arm guide bracket of brush arm, and by the independent conducting element that is provided with, so that guarantee the reliable electric power of carbon brush is supplied with.
Fig. 8 represents the basic structure that the present invention imagines.This figure is presented at the situation of motor reel to the brushgear part of middle motor.Label is represented respectively: 1. commutator; 2. the carbon brush that contacts with commutator 1; 3. brush arm; 4. as the brush arm duct ring of brush arm 3 parts; 5. brush arm guide bracket; 6. the stage clip of brush arm 3; 7. spring fixed seat; 9. cap; 10. bearing.
Above-mentioned ordinary construction has following point for high power motor.
Columniform brush arm guide bracket 5 engages one another with the brush arm duct ring 4 of semi-circular cross-section, and is engaged securely by spring 6 pressurizations.This brush arm guide bracket 5 is as power pack, and brush arm duct ring 4 and brush arm guide bracket 5 place that adds press contacts plays a part a kind ofly to electrically contact.If owing to entering of foul or other foreign matter, make to electrically contact partition, will produce electric spark so, cause the erosion that contact is local.This finally can cause and trembles, and causes motor performance to reduce.
If brush arm guide bracket 5 engages closely with brush arm duct ring 4, that at least in theory can be no problem.And actually, the bad joint between brush arm guide bracket 5 and the brush arm duct ring 4 is inevitably, as shown in Figure 8.Fig. 9 (A) and 9(B) be the schematic diagram that helps to illustrate bad joint situation for the sake of clarity, has exaggerated actual conditions among the figure slightly a bit.D represents the maximal clearance between brush arm guide bracket 5 and the brush arm duct ring 4.Fig. 9 (A) expression brush arm 3 moves to its limit inferior position, and Fig. 9 (B) represents that then brush arm moves to its limes superiors position.
Under these engagement states, following point may appear:
(1) harmful variation of the position of carbon brush on commutator face
Suppose that commutator 1 as shown in Figure 8 counterclockwise rotates.Because commutator 1 is rotating, because the frictional force effect that is produced is applied with a pulling force that makes progress, and a downward pulling force is arranged on the carbon brush 2 on the left side on the carbon brush 2 on the right.Also because commutator 1 continues rotating, two carbon brush 2 often are tending towards recovering its origin-location separately quite brokenly.According to this phenomenon, brush arm 3 tends to alternately occur as Fig. 9 (A) brokenly and the situation 9(B).Like this, carbon brush 2 changes it in commutator 1 lip-deep position with so-called sawtooth motion, and the result produces electric spark, to expecting powerful motor, causes very big difficulty.
(2) owing to the bad contact between brush arm guide bracket and the brush arm duct ring causes the motor bumpy running.
As described in top (1), brush arm 3 alternately occurs as Fig. 9 (A) and the situation 9(B) brokenly, so that also change brokenly of the contact point between brush arm guide bracket 5 and the brush arm duct ring 4.In supply line by brush arm guide bracket 5 and brush arm duct ring 4, because the change nocuously of the relation of the position between brush arm guide bracket 5 and the brush arm duct ring 4, electrically contacting continuous change and run down between the two.This also can cause the reduction of motor performance.
The present invention estimates to overcome the problems referred to above.
First purpose of the present invention is, is provided for the brushgear of motor, this motor by motor field frame of supporting excitation part and above brushgear is housed a cap relative bonding constitute; This brushgear comprises: be arranged on the brush arm guide bracket on the cap, in order to the carbon brush of commutator generation sliding contact, one end bearing carbon brush and the other end are by the brush arm of brush arm guide bracket rotatable support, by the brush arm duct ring of brush arm guide bracket rotatably support, be installed on that a spring fixed seat on the cap and an end contact with spring fixed seat and spring that the other end contacts with brush arm; The arm of brush arm is done fully firmly; In the shape of cross section of contact portion, the brush arm duct ring has two tangent lines that intersect mutually that contact the direction extension at the brush arm duct ring with the brush arm guide bracket between brush arm guide bracket and brush arm duct ring; The electric power of supplying with carbon brush does not pass through the brush arm guide bracket, but by the independent conducting element that is provided with, so that eliminate the irregular variation of contact portion between brush arm guide bracket and the brush arm duct ring, and ensures to the reliable electric power supply of carbon brush.
Second purpose of the present invention is to be provided at the brushgear that brush arm guide bracket circumferential surface is provided with the ring-type convex tendon.
The 3rd purpose of the present invention is to be provided at the brushgear that the brush arm duct ring is provided with convex tendon.
The 4th purpose of the present invention is that it is the brushgear of exit that conducting element is provided.
The 5th purpose of the present invention is that it is the brushgear of being made by non-conducting material that the brush arm guide bracket is provided.
Fig. 1 is the schematic diagram of expression profile of the present invention.
Fig. 2 to Fig. 4 is the enlarged drawing that embodies brushgear of the present invention.
Fig. 5 to Fig. 7 is the view of other embodiment of expression.
Fig. 8 is the schematic diagram that expression the present invention imagines structure substantially.
Fig. 9 is the schematic diagram that helps to illustrate the problem that runs in the structure shown in Figure 8.
Fig. 1 represents profile sketch map of the present invention.The figure shows the situation about axially seeing of the part of the brushgear that is used for a motor from motor, and the pattern of this motor by housing of supporting excitation part with above brushgear is housed a cap combine and constitute.Each expression of the label that provides among the figure:
1. commutator 2. carbon brush
3. brush arm 4. brush arm duct rings
5. brush arm guide bracket 6. springs
7. spring fixed seat 8. conducting elements
9. cap 10. bearings
In the present invention, the shape of cross section of brush arm duct ring 4 forms a U-shaped substantially, so that brush arm duct ring 4 is engaged with brush arm guide bracket 5 with two contact points (cross section can be found out).Because this layout, just can solve the problem (1) of carbon brush change in location on the described harmful commutator face.In addition, in the present invention, electric power is supplied with carbon brush 2 or brush arm 3 by a conducting element 8, as brush pigtail (for example being connected in brush arm duct ring 4 places) by being connected in the appropriate location, limit the effect of brush arm guide bracket 5, only allow it play supporting brush arm duct ring 4, and do not give the effect of its supply capability.After handling like this, because entering by foul or other foreign matter between brush arm guide bracket 5 and the brush arm duct ring 4, and as the factor of caused heat of the formation of megohmite insulants such as oxide and electricity and the erosion problem that causes, also have the problem (2) of the motor bumpy running that causes owing to the bad contact between brush arm guide bracket and the brush arm duct ring above-mentioned to be resolved.
Fig. 2 represents to embody the enlarged drawing of brushgear of the present invention.The cross section U-shaped in general of brush arm duct ring 4, it opens at opening part on both sides up and down slightly, rather than parallel.Because this layout is made the direction motion of brush arm duct ring 4 towards brush arm guide bracket 5 by the elastic force of spring 6.When being in joint and fixed position, the upward following and brush arm guide bracket 5 of brush arm duct ring 4 is respectively with a point (P
O, P
' O) contact.Like this, 2 contacts are effectively absolute.Because 2 contacts make brush arm duct ring 4 engage with brush arm guide bracket 5, can realize stable especially joint, and the anxiety of atremia.This has just eliminated the change in location of carbon brush 2 on harmful commutator face.
Fig. 3 represents the wearing and tearing owing to carbon brush 2, and brush arm 3 is biased to situation (as shown in phantom in Figure 1) on one side.Even during brush arm 3 secundlies, still keep stable joint, but the contact but moves to a P by two contacts
1And P
' l
Because electric power is by conducting element 8, as be connected in that the brush pigtail of carbon brush 2 or brush arm 3 supplies with, so the contact condition between brush arm duct ring 4 and the brush arm guide bracket 5 does not influence the electric power supply.Just,, form good stable electrical connection, reliable electric power is supplied with guaranteed, cause the motor steady running because conducting element 8 is connected with carbon brush 2 or brush arm 3.
(1) structure of brush arm guide bracket 5
The shape of brush arm guide bracket 5 is not limited to as shown in the Examples cylindrical, can also be with having the Any shape that the brush arm duct ring 4 of U-shaped cross-section substantially constitutes 2 contacts.(cylindrical brush arm guide bracket 5 when cross section is seen, obviously constitutes 2 contacts, is the line contact form with contacting of brush arm duct ring 4 in fact.）
The shape of brush arm guide bracket 5 can be ring-type convex tendon 5a cylindrical that has right quantity at its circumferential surface, makes brush arm guide bracket 5 just contact with brush arm duct ring 4 with this convex tendon.Fig. 5 and Fig. 6 just represent so a kind of embodiment.Fig. 5 is the detail drawing with contact portion between the brush arm guide bracket 5 of ring-type convex tendon 5a, and Fig. 6 then is the enlarged drawing of its major part.Fig. 6 (A) and 6(B) take from the cross section enlarged drawing of A-A and B-B hatching line among Fig. 5.By this arrangement, make and realize between ring-type convex tendon 5a and the brush arm duct ring 4 obviously and sensitive contacting.In the present invention, wherein brush arm guide bracket 5 is not made the part of electric power supply passageway, and only is used for supporting rigidly brush arm duct ring 4 unlikely deflections, so the material of brush arm guide bracket 5 just is not limited to the electric conducting material resemble the metal, can also be other non-conducting material, for example ceramic.When brush arm duct ring 5 is when making with electric conducting material, the electric power that will take measures certainly to prevent to supply with to brush arm duct ring 4 from power supply is through brush arm guide bracket 5.
(2) structure of brush arm duct ring
The brush arm duct ring 4 of cardinal principle U-shaped cross-section, side tilts about it, opens slightly near its opening part, and near narrower, the such form in place, bottom, it is good that it is play a part.Therefore, its up and down side just be not limited to the shape of skew lines, can also be tilt and simultaneously a little some circular arc to recessed or convex.
Hereinbefore, narrated brush arm guide bracket 5 with ring-type convex tendon 5a.And replace this structure, and can be at the upper side edge of brush arm duct ring 4 or lower side or up and down on the inner surface of side, to opening part, the convex tendon 4b of right quantity is set from the bottom of its U-shaped cross-section.Fig. 7 just represents to have on the dual-side brush arm duct ring 4 of convex tendon 4b.
(3) installation site of spring
As shown in Figure 4, spring can be installed in opposite one side of spring as shown in Figure 2.Spring can be any pattern, comprises helical spring.
As mentioned above, the present invention makes the stable engagement that can realize brush arm 3 and brush arm guide bracket 5, eliminates the change in location of carbon brush 2 on harmful commutator face.This causes eliminating the electric spark that often causes owing to this change in location.Like this, just can overcome for realizing an obstacle of high power motor.Because electric power is supplied with brush arm 3 by conducting element 8, and irrelevant with the situation that contacts between brush arm duct ring 4 and the brush arm guide bracket 5, is stable so supply with for the electric power of brush arm 3.Its result, the running of motor also is stable.Much less, spring 6 also can play conducting element 8.In addition, brush arm guide bracket 5, it and electric power are supplied with irrelevant and are only played supporting brush arm duct ring 4 and do not cause its deflection, so can be made by non-conducting material, need only this material and have enough rigidity for strutting piece.
Claims (5)
1, is used for a cap of motor field frame with supporting excitation part and formation so that the brushgear of the motor that engages with an openend of this motor field frame; Be contained on the above-mentioned cap in order to brushgear with commutator generation sliding contact; The configuration of the carbon brush of this brushgear makes under above-mentioned motor field frame and situation that above-mentioned cap engages and produces sliding contact with above-mentioned commutator; It is characterized in that this brushgear comprises the brush arm guide bracket that is arranged on the above-mentioned cap, in order to the carbon brush of above-mentioned commutator generation sliding contact, one end have above-mentioned carbon brush and the other end by the brush arm of above-mentioned brush arm guide bracket rotatably support, brush arm duct ring by the above-mentioned brush arm guide bracket rotatably support of above-mentioned brush arm, be contained in the spring fixed seat on the above-mentioned cap regularly, and an end contacts with above-mentioned spring fixed seat and spring that the other end contacts with above-mentioned brush arm; The arm of above-mentioned brush arm is done fully firmly; Come in contact in the shape of cross section of part at above-mentioned brush arm duct ring and above-mentioned brush arm guide bracket, above-mentioned brush arm duct ring has two crossing tangent lines, therefore the electric power of supplying with above-mentioned carbon brush can not pass through above-mentioned brush arm guide bracket, and by the independent conducting element that is provided with.
2, brushgear as claimed in claim 1 is characterized in that on the above-mentioned brush arm guide bracket circumferential surface some ring-type convex tendons being set.
3, brushgear as claimed in claim 1 is characterized in that above-mentioned brush arm duct ring is provided with some convex tendons.
4, brushgear as claimed in claim 1 is characterized in that above-mentioned conducting element is an exit.
5, brushgear as claimed in claim 1 is characterized in that above-mentioned brush arm guide bracket made by non-conducting material.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP184059/86 | 1986-08-05 | ||
| JP18405986A JPS6343550A (en) | 1986-08-05 | 1986-08-05 | Brush device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87105453A true CN87105453A (en) | 1988-02-24 |
Family
ID=16146653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN198787105453A Pending CN87105453A (en) | 1986-08-05 | 1987-08-03 | Brushgear |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS6343550A (en) |
| CN (1) | CN87105453A (en) |
| DE (1) | DE3725580A1 (en) |
| GB (1) | GB2193602A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101719616B (en) * | 2009-12-28 | 2013-07-10 | 苏州工业园区泰格电子科技有限公司 | Electric brush component |
| CN114631251A (en) * | 2019-10-29 | 2022-06-14 | 松下知识产权经营株式会社 | Electric motor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19725082A1 (en) * | 1997-06-13 | 1999-01-07 | Itt Mfg Enterprises Inc | Carbon brush for an electrical machine |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2008466A (en) * | 1933-05-26 | 1935-07-16 | Electric Auto Lite Co | Brush mounting for dynamoelectric machines |
| GB1190517A (en) * | 1967-11-15 | 1970-05-06 | Siemens Ag | An Electric Machine Brush Assembly. |
| DE2546168A1 (en) * | 1975-10-15 | 1977-04-28 | Bosch Gmbh Robert | SMALL ELECTRIC MACHINE |
| FR2421483A1 (en) * | 1978-03-31 | 1979-10-26 | Cit Alcatel | CONNECTOR FOR ELECTRIC CABLE |
| DE3022466A1 (en) * | 1980-06-14 | 1982-01-14 | Robert Bosch Gmbh, 7000 Stuttgart | BRUSH HOLDER FOR ELECTRICAL MACHINES, ESPECIALLY THREE-PHASE GENERATORS IN MOTOR VEHICLES |
| DE3023803A1 (en) * | 1980-06-25 | 1982-01-21 | Siemens AG, 1000 Berlin und 8000 München | COLLECTOR MOTOR |
| JPH0323824Y2 (en) * | 1985-12-09 | 1991-05-23 |
-
1986
- 1986-08-05 JP JP18405986A patent/JPS6343550A/en active Pending
-
1987
- 1987-08-01 DE DE19873725580 patent/DE3725580A1/en not_active Ceased
- 1987-08-03 CN CN198787105453A patent/CN87105453A/en active Pending
- 1987-08-05 GB GB08718530A patent/GB2193602A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101719616B (en) * | 2009-12-28 | 2013-07-10 | 苏州工业园区泰格电子科技有限公司 | Electric brush component |
| CN114631251A (en) * | 2019-10-29 | 2022-06-14 | 松下知识产权经营株式会社 | Electric motor |
| CN114631251B (en) * | 2019-10-29 | 2024-03-26 | 松下知识产权经营株式会社 | Motor with a motor housing having a motor housing with a motor housing |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3725580A1 (en) | 1988-02-18 |
| JPS6343550A (en) | 1988-02-24 |
| GB8718530D0 (en) | 1987-09-09 |
| GB2193602A (en) | 1988-02-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |