CN207009859U - A kind of graphite commutator copper shell - Google Patents
A kind of graphite commutator copper shell Download PDFInfo
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- CN207009859U CN207009859U CN201720744012.4U CN201720744012U CN207009859U CN 207009859 U CN207009859 U CN 207009859U CN 201720744012 U CN201720744012 U CN 201720744012U CN 207009859 U CN207009859 U CN 207009859U
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- copper
- vertical bars
- base plate
- circular base
- copper shell
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Abstract
The utility model provides a kind of graphite commutator copper shell, graphite commutator copper shell includes the circular base plate with centre bore, more vertical bars bars is distributed with along the cylindrical circumferential direction uniform vertical of the circular base plate, it is mutually isolated between the vertical bars bar, the vertical bars bar bottom is connected with the circular base plate, towards the same side of circular base plate at the top of vertical bars bar.Bottom copper sheet is connected into circular base plate and replaces copper bucket wall in the prior art, saved a large amount of copper materials, save cost of material by the utility model compared to prior art；The vertical bars bar of copper shell is directly cold stamping shaped, reduces that turning copper shell is cylindrical, process of milling rib one by one；The copper sheet of commutator and the interval trough of carbon plate are all that follow-up milling forms, and improve the positional precision of copper sheet and carbon plate, release stress during welding, improve product quality.
Description
Technical field
It the utility model is related to a kind of graphite commutator copper shell.
Background technology
Because ethanol petrol can be effectively reduced motor vehicle exhaust emission, improve energy resource structure.Studies in China shows, E15 second
The pure unleaded gasoline for vehicle carbon hydrocarbon discharge capacity of alcohol steam oil ratio (SOR) declines 16.2%, and carbon monoxide discharge capacity declines 30%.Promote ethanol petrol
Use an important energy source substituted pesticides for being China and the whole world.But electronic oil injection pump motor is at work, commutator face
Copper material and gasoline in ethanol occur electrochemical corrosion phenomenon, cause copper material inordinate wear, electrical machinery life suffers from this in advance
Terminate, only reach the 60% of projected life.
To solve this problem, have started to substitute copper with graphite to manufacture commutator now, lift motor life, graphite
Commutator is the joint product prepared using graphite and copper as primary raw material, is mainly used in ethanol petrol fuel oil pump motor.With mesh
The copper commutator that preceding vehicle fuel pump motor generally uses is compared, and graphite commutator has good resistance to corrosion and high temperature
Ability to bear, the service life of the fuel pump using ethanol petrol is substantially increased, solve the corrosion that ethanol petrol is brought and ask
Topic.Other graphite commutator can also effectively reduce motor in vehicle operation and, to the electromagnetic interference of automobile electronic system, also may be used
Greatly weaken the difference of fuel qualities influences to caused by automobile use.
Graphite commutator is mainly made up of copper housing base, phenolic moulding powder, carbon plate, copper shell electroplating surfaces with tin, to isolate alcohol to copper
Corrosion.Carbon plate cuts into multiple mutually isolated lamellar bodies on request, loads after rotor and carries out break-in with carbon brush.Because carbon plate exists
When carrying out cutting burst, it is also desirable to whole copper shell is all cut off, is mutually insulated to ensure between every commutator segment, such copper shell
Just there is copper to expose at cutting seam, can be contacted after oil pump is dressed up with alcohol, so as to corrode.In order to solve above-mentioned ask
Topic, in the patent document that notification number is CN201408901Y, disclose a kind of copper shell of flat carbon commutator.But from actual feelings
From the point of view of condition, because this copper shell uses cold-extrusion technology, outside needs to be attached with copper barrel, thus copper material rate of charge compared with
More, subsequent handling needs to fall copper barrel turning, and process is more complicated, and machining allowance is more and wastes copper product.
Utility model content
In order to overcome the above-mentioned deficiencies of the prior art, the purpose of this utility model there is provided a kind of graphite commutator copper shell
And the manufacture method of graphite commutator.
To reach above-mentioned purpose, technical scheme is used by the utility model solves its technical problem：A kind of graphite changes
To device copper shell, including the circular base plate with centre bore, along the cylindrical circumferential direction uniform vertical of the circular base plate it is distributed with more
Vertical bars bar, mutually isolated between the vertical bars bar, the vertical bars bar bottom is connected with the circular base plate, direction at the top of vertical bars bar
The same side of circular base plate.
Bottom copper sheet is connected into circular base plate and replaces copper bucket in the prior art by the utility model compared to prior art
Wall, a large amount of copper materials are saved, save cost of material；The vertical bars bar of copper shell is directly cold stamping shaped, reduce turning copper shell it is cylindrical,
The process of milling rib one by one；The copper sheet of commutator and the interval trough of carbon plate are all that follow-up milling forms, and improve copper sheet and carbon plate
Positional precision, release stress during welding, improve product quality.
Further, be provided with the circular base plate surface of the vertical bars bar opposite side it is a plurality of be disposed radially it is recessed
Groove, the gap area that the groove corresponds between the vertical bars bar.
Using above-mentioned preferable scheme, the milling amount of copper material is reduced, to carbon plate portion will not be milled into during circular base plate milling.
Further, the groove floor is the cambered surface of indent.
Using above-mentioned preferable scheme, in commutator manufacturing process, polylith is cut into along groove in the circular base plate of copper shell
After copper sheet, the arc section of groove edge is remained, when phenolic moulding powder insulating barrier fills, the radian of groove edge plays guiding and made
With being easy to phenolic moulding powder to fill expires whole groove, improves the adhesion between insulating barrier and copper shell.
Further, the circular base plate is provided with quantity and the vertical bars bar identical steam vent.
Using above-mentioned preferable scheme, it is ensured that the discharge of bubble when copper shell welds with carbon plate, improve carbon plate and copper shell
Solder bond power, improve finished product yield.
Further, it is provided with group number with the circular base plate surface of the vertical bars bar homonymy and vertical bars bar identical first is oblique
Hook, the second oblique hook, the first oblique hook are located at each vertical bars bar root, and the second oblique hook is provided close to circular base plate centre bore
Position, the first oblique hook, the second oblique hook cooperatively form opposite "eight" shape structure.
Using above-mentioned preferable scheme, the adhesion between insulating barrier and copper shell is improved.
A kind of manufacture method of graphite commutator, comprises the following steps：
Step 1, above-mentioned graphite commutator copper shell is made by cold stamping；
Step 2, graphite commutator copper shell is bonded welding with carbon plate, be combined as a whole；
Step 3, carbon plate part is fixed using Special clamping frock, from the side where copper shell vertical bars bar to circular base plate
Milling is carried out, depth to carbon plate portion, the copper shell separation trough of multiple tracks radially is milled out in circular base plate, by the circular base of copper shell
Disk is divided into quantity and vertical bars bar identical copper sheet, and every copper sheet is connected with a vertical bars bar；
Step 4, filling phenolic moulding powder is molded to form insulating barrier, and the phenolic moulding powder of insulation is filled full in the copper shell separation trough；
Step 5, insulating barrier center is reamed, vertical bars bar is bent into hook bar；
Step 6, electroplate, the exposed portion of copper shell and hook bar surface plate uniform anticorrosion coating；
Step 7, car carbon plate end face, except the coating in attachment removal and carbon plate；
Step 8, mill out the carbon plate separation trough of multiple tracks radially on carbon plate, at depth to insulating barrier, carbon plate is separated
It is corresponding with copper shell separation groove location for mutually isolated small carbon plate, the carbon plate separation trough.
Using above-mentioned preferable scheme, bottom copper sheet is connected into circular base plate and replaces copper bucket wall in the prior art, is saved
A large amount of copper materials, save cost of material；The vertical bars bar of copper shell is directly cold stamping shaped, reduces that turning copper shell is cylindrical, milling one by one
The process for cutting rib；The copper sheet of commutator and the interval trough of carbon plate are all that follow-up milling forms, and improve the position of copper sheet and carbon plate
Precision, stress during welding is released, improves product quality；It is combined, excludes with phenolic moulding powder insulating barrier at copper shell separation trough
Corrosion of the alcohol to copper sheet when commutator uses, improves commutator service life.
Further, the width of the copper shell separation trough in step 3 is more than the width of carbon plate separation trough in step 8.
Using above-mentioned preferable scheme, touched when having prevented milling carbon plate separation trough with copper sheet, effectively prevent from revealing copper.
Further, the width of the copper shell separation trough in step 3 is less than the width of the circular base plate surface groove.
Using above-mentioned preferable scheme, seam can be formed in phenolic moulding powder insulating barrier and copper sheet junction, improve phenolic moulding powder
The bond strength of insulating barrier and copper sheet.
Further, also include between the step 3 and step 4：
Step 31, insulating cement coating, the glue spreading jig bag are carried out to the copper shell separating tank using Special coating glue tool
The air blowing portion for being fitted in copper shell surface, the suction unit being enclosed in around copper shell are included, first passes through the center in the air blowing portion of glue spreading jig
Hole applies the 0.8-1.2MP high pressure blow-gas 5-10 seconds to copper shell separation trough；
Step 32, UV insulating cements are injected to copper shell separation trough by the centre bore in the air blowing portion of glue spreading jig；
Step 33, copper shell separation trough pressure 0.05-0.1MP low pressure is blown by the centre bore in the air blowing portion of glue spreading jig
The gas 10-15 seconds；
Step 34, the air blowing portion of glue spreading jig is lifted, opens the uviol lamp located at the air blowing portion of glue spreading jig, to copper shell point
Separate slot irradiates the 20-25 seconds.
Using above-mentioned preferable scheme, the copper scale in copper shell separation trough can be effectively removed, and formed in the side of copper sheet
Even insulation protection film, while the resistance that phenolic moulding powder flows into copper shell separation trough can be reduced, the packing density of phenolic moulding powder is improved, is improved
Insulating properties between each copper sheet.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of embodiment of the utility model commutator；
Fig. 2 be in Fig. 1 A-A to the structural representation of section view；
Fig. 3 is a kind of structural representation of embodiment of the utility model copper shell；
Fig. 4 is a kind of structural representation of embodiment of the utility model copper shell；
Fig. 5 is the structural representation of the utility model copper shell another embodiment；
Fig. 6 is a kind of structural representation of embodiment of the utility model carbon plate；
Fig. 7 is a kind of structural representation of embodiment of the utility model clamping tool；
Fig. 8 is the structural representation that the utility model step 3 completes latter embodiment；
Fig. 9 is the structural representation that the utility model step 4 completes latter embodiment；
Figure 10 is the structural representation that the utility model step 8 completes latter embodiment；
Figure 11 is a kind of structural representation of embodiment of the utility model glue spreading jig.
Numeral and the title of the corresponding component represented by letter in figure：
1- copper shells；11- circular base plates；111- grooves；112- steam vents；The first oblique hooks of 113-；The second oblique hooks of 114-；115-
Copper sheet；12- vertical bars bars；121- hook bars；2- carbon plates；3- copper shell separation troughs；4- insulating barriers；5- carbon plate separation troughs；6- clamping tools；
7- glue spreading jigs.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
As shown in Figure 1-2, graphite commutator include the mutually isolated carbon plate 2 of the mutually isolated copper sheet 115 of polylith, polylith,
The hook bar 121 that is connected as a single entity with copper sheet 115, the insulating barrier 4 for wrapping copper sheet 115 and carbon plate 2.
As shown in figure 3, a kind of graphite commutator copper shell 1, including the circular base plate 11 with centre bore, along circular base plate 11
Cylindrical circumferential direction uniform vertical is distributed with more vertical bars bars 12, mutually isolated between vertical bars bar 12, the bottom of vertical bars bar 12 with it is circular
Chassis 11 is connected, towards the same side of circular base plate 11 at the top of vertical bars bar 12.
It is using the beneficial effect of above-mentioned technical proposal：Bottom copper sheet is connected into circular base plate and replaces copper in the prior art
Bucket wall, saves a large amount of copper materials, saves cost of material；The vertical bars bar of copper shell is directly cold stamping shaped, reduces outside turning copper shell
The process of circle, one by one milling rib；The copper sheet of commutator and the interval trough of carbon plate are all that follow-up milling forms, and improve copper sheet and carbon
The positional precision of piece, stress during welding is released, improves product quality.
As shown in figure 4, in other embodiments of the present utility model, in order to reach the mesh for reducing copper material milling amount
, with being provided with a plurality of groove 111 being disposed radially on the surface of circular base plate 11 of the opposite side of vertical bars bar 12, groove 111 is right
Should be in the gap area between vertical bars bar 12.It is using the beneficial effect of above-mentioned technical proposal：The milling amount of copper material is reduced, to circle
Carbon plate portion will not be milled into during the milling of shape chassis.
In other embodiments of the present utility model, in order to reach the purpose for improving phenolic moulding powder mobility, groove 111
Bottom surface is the cambered surface of indent.It is using the beneficial effect of above-mentioned technical proposal：In commutator manufacturing process, in the circular base of copper shell
After disk is cut into polylith copper sheet along groove, the arc section of groove edge is remained, when phenolic moulding powder insulating barrier fills, groove side
The radian in portion plays guide effect, is easy to the full whole groove of phenolic moulding powder filling, improves the adhesion between insulating barrier and copper shell.
In other embodiments of the present utility model, improve carbon plate and the purpose of the weldability of copper shell to reach,
Circular base plate 11 is provided with quantity and the identical steam vent 112 of vertical bars bar 12.It is using the beneficial effect of above-mentioned technical proposal：Can
The discharge of bubble during ensureing that copper shell welds with carbon plate, the solder bond power of carbon plate and copper shell is improved, improves finished product yield.
As shown in figure 5, in other embodiments of the present utility model, improved to reach between insulating barrier and copper shell
Adhesion purpose, be provided with group number with the surface of circular base plate 11 of the homonymy of vertical bars bar 12 and the identical first of vertical bars bar 12 be oblique
Hook 113, the second oblique hook 114, the first oblique hook 113 are located at each root of vertical bars bar 12, and the second oblique hook 114 is provided close to circular base plate 11
The position of centre bore, the first oblique hook 113, the second oblique hook 114 cooperatively form opposite "eight" shape structure.Using above-mentioned technical side
The beneficial effect of case is：Improve the adhesion between insulating barrier and copper shell.
A kind of manufacture method of graphite commutator, comprises the following steps：
Step 1, above-mentioned graphite commutator copper shell 1 is made by cold stamping (shown in Fig. 3-5)；Step 2, graphite is commutated
Device copper shell 1 is bonded welding with carbon plate 2 (shown in Fig. 6), be combined as a whole；
Step 3, as Figure 7-8, the part of carbon plate 2 is fixed using Special clamping frock 6, where from the vertical bars bar of copper shell 1
Side to circular base plate 11 carry out milling, depth to carbon plate 2, the copper shell of multiple tracks radially is milled out in circular base plate 11
Separation trough 3, the circular base plate 11 of copper shell 1 is divided into quantity and the identical copper sheet 115 of vertical bars bar 12, every copper sheet 115 and one
Individual vertical bars bar 12 is connected；
Step 4, as shown in figure 9, filling phenolic moulding powder is molded to form insulating barrier 4, insulation is filled full in copper shell separation trough 3
Phenolic moulding powder；
Step 5, as shown in Figure 10, the center of insulating barrier 4 is reamed, vertical bars bar 12 is bent into hook bar 121；
Step 6, electroplate, the exposed portion of copper shell and hook bar surface plate uniform anticorrosion coating；
Step 7, car carbon plate end face, except the coating in attachment removal and carbon plate；
Step 8, the carbon plate separation trough 5 of multiple tracks radially is milled out on carbon plate 2, at depth to insulating barrier 4, by carbon plate 2
It is divided into mutually isolated small carbon plate, (copper shell separation trough is by insulating barrier in Figure 10 with copper shell separation trough 3 for carbon plate separation trough 5
Filling) position is corresponding.
It is using the beneficial effect of above-mentioned technical proposal：Bottom copper sheet 115 is connected into circular base plate 11 and replaces existing skill
Copper bucket wall in art, a large amount of copper materials are saved, save cost of material；The vertical bars bar 12 of copper shell 1 is directly cold stamping shaped, reduces car
Cut that copper shell is cylindrical, process of milling rib one by one；The copper sheet 115 of commutator and the interval trough of carbon plate 2 are all that follow-up milling forms,
The positional precision of copper sheet 115 and carbon plate 2 is improved, stress during welding is released, improves product quality；At copper shell separation trough 3
It is combined with phenolic moulding powder insulating barrier 4, eliminates corrosion of the alcohol to copper sheet when commutator uses, improve commutator service life.
In other embodiments of the present utility model, in order to reach the purpose for preventing revealing copper, the copper shell point in step 3
The width of separate slot 3 is more than the width of carbon plate separation trough 5 in step 8.It is using the beneficial effect of above-mentioned technical proposal：Milling is prevented
Touched when cutting carbon plate separation trough 5 with copper sheet 115, effectively prevent from revealing copper.
It is strong in order to reach the combination of raising phenolic moulding powder insulating barrier and copper sheet in other embodiments of the present utility model
The purpose of degree, the width of the copper shell separation trough 3 in step 3 are less than the width of the surface groove 111 of circular base plate 11.Using above-mentioned skill
The beneficial effect of art scheme is：Seam can be formed in phenolic moulding powder insulating barrier and copper sheet junction, improve phenolic moulding powder insulating barrier with
The bond strength of copper sheet.
As shown in figure 11, in other embodiments of the present utility model, insulating properties between copper sheet is improved in order to reach
Purpose, also include between the step 3 and step 4：
Step 31, insulating cement coating is carried out to copper shell separating tank 3 using Special coating glue tool 7, glue spreading jig 7 includes fitting
In the air blowing portion on the surface of copper shell 1, the suction unit being enclosed in around copper shell 1, the centre bore pair in the air blowing portion of glue spreading jig 7 is first passed through
Copper shell separation trough 3 applies the 0.8-1.2MP high pressure blow-gas 5-10 seconds；
Step 32, UV insulating cements are injected to copper shell separation trough 3 by the centre bore in the air blowing portion of glue spreading jig 7；
Step 33, pressed 0.05-0.1MP low pressure by the centre bore in the air blowing portion of glue spreading jig 7 to copper shell separation trough 3
The air blowing 10-15 seconds；
Step 34, the air blowing portion of glue spreading jig 7 is lifted, the uviol lamp located at the air blowing portion of glue spreading jig 7 is opened, to copper shell
Separation trough 3 irradiates the 20-25 seconds.
It is using the beneficial effect of above-mentioned technical proposal：The copper scale in copper shell separation trough can be effectively removed, and in copper sheet
Side forms uniform insulation protection film, while can reduce the resistance that phenolic moulding powder flows into copper shell separation trough, improves phenolic moulding powder
Packing density, improve the insulating properties between each copper sheet.
For above-described embodiment only to illustrate technical concepts and features of the present utility model, its object is to allow the common skill in this area
Art personnel can understand content of the present utility model and be carried out, and can not limit the scope of protection of the utility model with this,
All equivalent change or modifications made according to the utility model Spirit Essence, should all cover in the scope of protection of the utility model
It is interior.
Claims (5)
1. a kind of graphite commutator copper shell, it is characterised in that including the circular base plate with centre bore, along outside the circular base plate
Circumferencial direction uniform vertical is distributed with more vertical bars bars, mutually isolated between the vertical bars bar, the vertical bars bar bottom with it is described
Circular base plate is connected, towards the same side of circular base plate at the top of vertical bars bar.
2. graphite commutator copper shell according to claim 1, it is characterised in that the circle with the vertical bars bar opposite side
The a plurality of groove being disposed radially, the gap area that the groove corresponds between the vertical bars bar are provided with chassis surface.
3. graphite commutator copper shell according to claim 2, it is characterised in that the groove floor is the cambered surface of indent.
4. graphite commutator copper shell according to claim 3, it is characterised in that the circular base plate is provided with quantity and institute
State vertical bars bar identical steam vent.
5. graphite commutator copper shell according to claim 4, it is characterised in that the circular base plate with the vertical bars bar homonymy
Surface is provided with group number and the first oblique hook of vertical bars bar identical, the second oblique hook, and the first oblique hook is located at each vertical bars bar root, institute
The position that the second oblique hook is provided close to circular base plate centre bore is stated, the first oblique hook, the second oblique hook cooperatively form opposite
"eight" shape structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720744012.4U CN207009859U (en) | 2017-06-23 | 2017-06-23 | A kind of graphite commutator copper shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720744012.4U CN207009859U (en) | 2017-06-23 | 2017-06-23 | A kind of graphite commutator copper shell |
Publications (1)
| Publication Number | Publication Date |
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| CN207009859U true CN207009859U (en) | 2018-02-13 |
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ID=61448238
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720744012.4U Active CN207009859U (en) | 2017-06-23 | 2017-06-23 | A kind of graphite commutator copper shell |
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| Country | Link |
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| CN (1) | CN207009859U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107134701A (en) * | 2017-06-23 | 2017-09-05 | 苏州工业园区安固电器有限公司 | A kind of manufacture method of graphite commutator copper shell and graphite commutator |
-
2017
- 2017-06-23 CN CN201720744012.4U patent/CN207009859U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107134701A (en) * | 2017-06-23 | 2017-09-05 | 苏州工业园区安固电器有限公司 | A kind of manufacture method of graphite commutator copper shell and graphite commutator |
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