CN102891416A - Split type carbon brush bracket and manufacturing method thereof - Google Patents
Split type carbon brush bracket and manufacturing method thereof Download PDFInfo
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- CN102891416A CN102891416A CN2011102024098A CN201110202409A CN102891416A CN 102891416 A CN102891416 A CN 102891416A CN 2011102024098 A CN2011102024098 A CN 2011102024098A CN 201110202409 A CN201110202409 A CN 201110202409A CN 102891416 A CN102891416 A CN 102891416A
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- Prior art keywords
- carbon brush
- support portion
- split type
- cavity
- metal terminal
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 84
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 84
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 239000002184 metal Substances 0.000 claims abstract description 98
- 239000011347 resin Substances 0.000 claims abstract description 26
- 229920005989 resin Polymers 0.000 claims abstract description 26
- 238000001746 injection moulding Methods 0.000 claims abstract description 22
- 239000000945 filler Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 description 6
- 238000000465 moulding Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 239000002991 molded plastic Substances 0.000 description 1
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Abstract
The invention discloses a split type carbon brush bracket and a manufacturing method of the split type carbon brush bracket. The split type carbon brush bracket comprises a plurality of metal terminals and a positioning framework, wherein the framework comprises a main body part and a support part which is vertically connected at one side of the main body part; a groove is formed at the other side of the main body part; the support part is a cavity of which one end is opened; the cavity is communicated with the groove; a positioning hole is formed at the other end of the support part; each metal terminal comprises a carbon brush connection part inside the groove and a lead connecting part which is arranged in the cavity and stretches from the positioning hole; the split type carbon brush bracket further comprises a filler inside the cavity and a shell which is wrapped on the main body part in an injection molding mode. According to the split type carbon brush bracket and the manufacturing method of the split type carbon brush bracket, by fixing the metal terminal through a premolded positioning framework, the positioning precision of the metal terminal is increased; by filling the cavity, the air tightness between the metal terminal and the resin is increased; as the metal terminal is arranged inside the groove and is fixed, the flowing of the resin is not affected when the shell is subject to injection molding, so that the size precision of the carbon brush bracket is increased.
Description
Technical field
The present invention relates to the motor manufacturing technology field, be specifically related to a kind of Split type carbon brush holder and manufacture method thereof that is applied to automobile ABS system.
Background technology
Current, automobile ABS (Anti-lock braking system) system's forward miniaturization, modularization, standardization future development.The ABS motor that is used for the driving pump body action requires that its volume is little, dimensional accuracy is high, the metal terminal good airproof performance.As shown in Figure 1 and Figure 2, the carbon brush holder 100 of the integral moulding of prior art comprises discoid carbon brush holder main body 110 and is vertically connected on the columned supporter 120 of carbon brush holder main body 110 1 sides, the part of negative pole metal terminal 101 and cathode metal terminal 102 is arranged in supporter 120 and stretches out supporter 120, be used for being connected with wire, another part that negative pole metal terminal 101 is connected with the cathode metal terminal is positioned at carbon brush holder main body 110 and is used for being connected with carbon brush.
The manufacture process of the carbon brush holder 100 of prior art is directly negative pole metal terminal 101 and cathode metal terminal 102 to be put into mould, become carbon brush holder 100 by the resin by injection integral molded plastic, but because negative, positive metal terminal 101 and 102 with formation carbon brush holder 100 resin between thermal expansion coefficient difference very large, and the adhesion of common insulating resin and metal terminal is relatively poor, therefore cause having the slit between negative pole metal terminal 101 or cathode metal terminal 102 and the carbon brush holder 100, can't satisfy the ABS system for the bubble-tight strict demand of motor.In addition, in the integrated injection molding mode of prior art, negative pole metal terminal 101 or cathode metal terminal 102 are placed directly in the injection mold, when injection moulding, the flowing pressure that resin is powerful and temperature impact anticathode metal terminal 101 or cathode metal terminal 102, directly affect the form and dimensional precision of metal terminal.Moreover, because carbon brush holder structure is comparatively complicated, when injection mo(u)lding, resin is subject to the obstruction of terminal shape, flow direction is uncertain, causes carbon brush holder injection molding body internal resin density unstable, after the depanning cooling, each position contraction distortion of carbon brush holder is inconsistent, causes carbon brush holder shape and dimensional accuracy to be affected.
Summary of the invention
In view of the foregoing defects the prior art has, the problem to be solved in the present invention is to provide the manufacture method of a kind of carbon brush holder and carbon brush holder, metal terminal shape and the positioning accuracy of raising carbon brush holder inside, and the air-tightness between raising metal terminal and the resin.
For addressing the above problem, the invention provides a kind of Split type carbon brush holder, comprise a plurality of metal terminals and be used for the location skeleton of fixing described metal terminal, described location skeleton comprises main part and is vertically connected on the support portion of described main part one side, the opposite side of described main part is provided with groove, the inside of described support portion is the cavity of an end opening, the openend of described support portion is connected with described main part makes described cavity be communicated with described groove, and the described support portion other end is provided with the location hole for interspersed and fixing described metal terminal; Each described metal terminal comprises respectively the carbon brush connecting portion that is positioned at described groove and is positioned at the cavity of described support portion and the wire interconnecting piece that stretches out through described location hole; Described Split type carbon brush holder also comprises the filler that is filled in the described cavity and is coated on housing on the described main part by injection moulding.
As preferably, described filler is insulating resin.
As preferably, described main part and the support portion of described location skeleton are integrated.
As preferably, be provided with for interting and the location notch of the wire interconnecting piece of fixing described metal terminal along the length direction of described support portion on the wall of the cavity of described support portion.
As preferably, described location notch is two.
Further, as preferably, two described location notchs are parallel to each other.
As preferably, described insulating resin by mould filling in described cavity.
The present invention also provides a kind of manufacture method of Split type carbon brush holder to may further comprise the steps successively:
(1) injection moulding forms the location skeleton, described location skeleton comprises main part and is connected to the support portion of described main part one side, the opposite side of described main part is provided with groove, the inside of described support portion is the cavity of an end opening, the openend of described support portion is connected with described main part makes cavity be communicated with described groove, and the other end of described support portion is provided with the location hole for interspersed and fixing described metal terminal;
(2) metal terminal is inserted on the skeleton of the formed location of described step (1), the carbon brush connecting portion that is used for being connected with carbon brush of described metal terminal is in described groove, and the wire company headquarters that is used for being connected with wire of described metal terminal inserts the cavity of described support portion and stretches out described support portion by described location hole;
(3) filler is inserted in the described cavity that is fitted with described metal terminal;
(4) after described cavity is filled, form the housing that coats described main part by injection moulding in the outside of described main part.
As preferably, in step (1), described main part and the support portion of described location skeleton are integrated.
As preferably, in step (3), described filler injects in the described cavity by injection moulding.
Split type carbon brush holder of the present invention and manufacture method thereof, location skeleton fixing metal terminal by first moulding, improved the positioning accuracy of metal terminal in carbon brush holder, by cavity is filled, improve the air-tightness between metal terminal and the resin, because metal terminal is positioned at groove and is fixed, when injection-moulded housing, resin mobile unaffected improved the dimensional accuracy of carbon brush holder.
Description of drawings
Fig. 1 is the perspective view of the integral type carbon brush holder of prior art;
Fig. 2 is the generalized section that integral type carbon brush holder shown in Figure 1 cuts along the plane of the bus of the diameter that passes through simultaneously the carbon brush holder main body and supporter;
Fig. 3 is the perspective view of the Split type carbon brush holder of embodiments of the invention;
Fig. 4 is the left view of Split type carbon brush holder shown in Figure 3;
Fig. 5 is the right view of Split type carbon brush holder shown in Figure 3;
Fig. 6 be Split type carbon brush holder shown in Figure 5 along A-A to generalized section;
Fig. 7 is the perspective view of the location skeleton of Split type carbon brush holder shown in Figure 3;
Fig. 8 is the perspective view of another direction of location skeleton shown in Figure 7;
Fig. 9 is that the support portion of location skeleton shown in Figure 8 is by the perspective view after along B-B to planar interception;
Figure 10 is the enlarged diagram of M section of the support portion of location skeleton shown in Figure 8;
Figure 11 is the schematic diagram behind the location skeleton plug-in mounting metal terminal shown in Figure 7;
Figure 12 is that the cavity of the support portion of location skeleton shown in Figure 11 is filled the schematic diagram of finishing;
Figure 13 is the perspective view of a metal terminal in the Split type carbon brush holder of embodiments of the invention;
Figure 14 is the perspective view of another metal terminal in the Split type carbon brush holder of embodiments of the invention.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail, but not as a limitation of the invention.
Fig. 3 is the perspective view of the Split type carbon brush holder of embodiments of the invention; Fig. 4 is the left view of the Split type carbon brush holder shown in Fig. 3 quilt; Fig. 5 is the right view of Split type carbon brush holder shown in Figure 3; Fig. 6 be Split type carbon brush holder shown in Figure 5 along A-A to generalized section.Such as Fig. 3-shown in Figure 6, the Split type carbon brush holder 200 of embodiments of the invention comprises the first metal end 201, the second metal terminal 202 and is used for the fixedly location skeleton of sub the 201 and second metal terminal 202 of the first metal end.In the present embodiment, only describe as an example of the Split type carbon brush holder that comprises two metal terminals example, those skilled in the art can under technology instruction of the present invention, make the Split type carbon brush holder that comprises three or three above metal terminals.
Such as Fig. 7, shown in Figure 8, the location skeleton 240 of the Split type carbon brush holder 200 of the present embodiment comprises main part 241 and is vertically connected on the support portion 220 of main part 241 1 sides.Wherein main part 241 is disc, and support portion 220 is for having the cylindrical of cavity.The side that main part 241 is not connected with support portion 220 is provided with the first groove 245 and the second groove 246.One end of support portion 220 is openend 229, and openend 229 is connected with main part 241, and cavity 228 is communicated with the first groove 245 and the second groove 246 simultaneously.Such as Fig. 8, shown in Figure 10, the other end of support portion 220 (being free end) is provided with for the first location hole 211 and the second location hole 212 interspersed and fixedly the first metal end the 201 and second metal terminal 202.Shape such as Figure 13 and shown in Figure 14 of the first metal end the 201 and second metal terminal 202, the first metal end 201 is divided into for the carbon brush connecting portion 2011 that is connected with carbon brush and the wire interconnecting piece 2012 that is connected being connected with wire; The second metal terminal 202 also is divided into for the carbon brush connecting portion 2021 that is connected with carbon brush and the wire interconnecting piece 2022 that is connected being connected with wire.
As shown in figure 11, the carbon brush connecting portion 2011 of the first metal end 201 is positioned at the first groove 245 on the main part 241, is used for being connected with the carbon brush (not shown); The wire interconnecting piece 2012 of the first metal end 201 is positioned at the cavity 228 of support portion 220, and the free end of the wire interconnecting piece 2012 of the first metal end 201 stretches out support portion 220 by the first location hole 211 and is used for being connected with the wire (not shown).The second metal terminal 202 adopts the mode similar with the first metal end 201 to be fixed on and locates on the skeleton 240.
As preferred version, as shown in Figure 9, offer the first location notch 221 and the second location notch 222 for further fixedly the first metal end the 201 and second metal terminal 202 on the inwall of support portion 220.Be that cavity 228 comprises two the first parallel location notchs 221 and the second location notch 222, as shown in Figure 9, on the cross section of support portion 220, cavity 228 is " worker " font substantially, and the wire interconnecting piece 2012 of the first metal end 201 and the wire interconnecting piece 2022 of the second metal terminal 202 lay respectively in the first location notch 221 and the second location notch 222 and stretch out from the first location hole 211 and the second location hole 212 respectively the end.By arrange two location notchs can further improve metal terminal in the location stability on the skeleton, avoid in next step injection moulding operation the impact of the resin that metal terminal is flowed the and move quality of the carbon brush holder after the raising moulding.Certainly, the first location notch 221 can also become splayed to arrange with the second location notch 222, just adopts two arrangement modes that location notch is parallel to each other shown in Figure 9, and the subsequent handling of being more convenient for is filled cavity 228.
As shown in Figure 6, the Split type carbon brush holder 200 of the present embodiment also comprises the fillers 251 in the cavity 228 that is filled in support portion 220 and is coated on housing 210 on the main part 241 by injection moulding.The inboard of housing 210 covers on the main part 241, and forms with it one, and the shape of the outer surface of housing 210 is identical with the shape of the integral type carbon brush holder of prior art.Certainly the carbon brush connecting portion 2011 that is positioned at the first metal end 201 of the first groove 245 is also wrapped up by housing 210 parts with the carbon brush connecting portion 2021 that is positioned at the second metal terminal 202 of the second groove 246.Wherein, the filler 251 that is positioned at cavity 228 adopts dielectric resin material, in this enforcement, preferentially select " SEAL-FIT " material, this material and metal and ordinary resin all have strong bonded power, and have anti-shrinkage stress, can and metal terminal and support portion between strong bonded.
Describe the manufacture process of Split type carbon brush holder of the present invention in detail below in conjunction with Fig. 2-Figure 14.
The manufacture method of the Split type carbon brush holder of the present embodiment may further comprise the steps successively:
(1) injection moulding forms the location skeleton, at first uses particular manufacturing craft by injection moulding formation location skeleton 240 as shown in Figure 7 and Figure 8.As shown in Figure 7 and Figure 8, location skeleton 240 comprises main part 241 and the support portion 220 that is vertically connected on main part 241 1 sides, and the opposite side of main part 241 is provided with two grooves, is respectively the first groove 245 and the second groove 246.Support portion 220 is hollow cylindric, one end of its inner cavity 228 is that openend 229 openends 229 are connected with main part 241 and cavity 228 is communicated with the first groove 245 and the second groove 246 simultaneously, and the other end of support portion 220 is provided with the first location hole 211 and the second location hole 212 for interspersed metal terminal.
(2) metal terminal is inserted on the skeleton of described location.As shown in figure 11, the first metal end the 201 and second metal terminal 202 is inserted into respectively on the skeleton 240 of location, wherein, an end of the first metal end 201 is positioned at the first groove 245 on the main part 241, is used for being connected with the carbon brush (not shown); The other end is positioned at support portion 220 and stretches out support portion 220 by the first location hole 211 and is used for being connected with the wire (not shown).The second metal terminal 202 adopts the mode similar with the first metal end 201 to be fixed on and locates in the skeleton 240.The first metal end the 201 and second metal terminal 202 is fixed in the skeleton 240 of location, just can be subject to the impact that the resin in the postorder injection moulding operation impacts, thereby guaranteed the form and dimensional precision of metal terminal.
(3) filler is inserted in the cavity, filler 251 is inserted in the cavity 228 of support portion 220 by injection moulding, and wherein filler 251 can be selected suitable megohmite insulant, such as insulating resin etc.In the present embodiment, preferentially select " SEAL-FIT " material, this material and metal terminal and common casting resin all have good adhesion and the characteristic of anti-shrinkage stress, can guarantee the air-tightness requirement between metal terminal and the resin.
(4) injection moulding forms shell, after cavity 228 is filled, forms shape as shown in figure 12, and the wire interconnecting piece of the first metal end the 201 and second metal terminal 202 just is fixed in the support portion 220.The outside at the main part 241 that is fitted with the first metal end the 201 and second metal terminal 202 forms the housing 210 that coats main part 241 by injection moulding, form Split type carbon brush holder 200 as shown in Figure 3-Figure 5.In this operation, owing to being on the basis of the main part 241 of the location of moulding skeleton 240, to form the shell 210 that is coated on the main part 241 by injection moulding again, and the first metal end the 201 and second metal terminal 202 all is positioned at groove, the flowing forming space uniform that is used to form the resin of shell 210 is stablized, therefore the resin density of the shell 210 after the moulding is even, can improve shell 210 at the cooled form and dimensional precision of depanning.And the first metal end the 201 and second metal terminal 202 all is positioned at groove, is not vulnerable to the impact of the resin that flows, and its position stability is conducive to improve the quality after the carbon brush holder moulding.In the present embodiment, main part 241 and the support portion 220 of location skeleton 240 are integrated, and namely by single injection-molded, location skeleton 240 can adopt common resin material.
Certainly, the above is preferred implementation of the present invention, should be understood that; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention, can also make some improvements and modifications, these improvements and modifications also are considered as protection scope of the present invention.
Claims (10)
1. Split type carbon brush holder, it is characterized in that, comprise a plurality of metal terminals and be used for the location skeleton of fixing described metal terminal, described location skeleton comprises main part and is vertically connected on the support portion of described main part one side, the opposite side of described main part is provided with groove, the inside of described support portion is the cavity of an end opening, the openend of described support portion is connected with described main part makes described cavity be communicated with described groove, and the described support portion other end is provided with the location hole for interspersed and fixing described metal terminal;
Each described metal terminal comprises respectively the carbon brush connecting portion that is positioned at described groove and is positioned at the cavity of described support portion and the wire interconnecting piece that stretches out through described location hole;
Described Split type carbon brush holder also comprises the filler that is filled in the described cavity and is coated on housing on the described main part by injection moulding.
2. Split type carbon brush holder as claimed in claim 1 is characterized in that, described filler is insulating resin.
3. Split type carbon brush holder as claimed in claim 1 is characterized in that, described main part and the support portion of described location skeleton are integrated.
4. Split type carbon brush holder as claimed in claim 1 is characterized in that, is provided with for interting and the location notch of the wire interconnecting piece of fixing described metal terminal along the length direction of described support portion on the wall of the cavity of described support portion.
5. Split type carbon brush holder as claimed in claim 4 is characterized in that, described location notch is two.
6. Split type carbon brush holder as claimed in claim 5 is characterized in that, two described location notchs are parallel to each other.
7. Split type carbon brush holder as claimed in claim 2 is characterized in that, described insulating resin by mould filling in described cavity.
8. the manufacture method of a Split type carbon brush holder is characterized in that, may further comprise the steps successively:
(1) injection moulding forms the location skeleton, described location skeleton comprises main part and is connected to the support portion of described main part one side, the opposite side of described main part is provided with groove, the inside of described support portion is the cavity of an end opening, the openend of described support portion is connected with described main part makes cavity be communicated with described groove, and the other end of described support portion is provided with the location hole for interspersed and fixing described metal terminal;
(2) metal terminal is inserted on the skeleton of the formed location of described step (1), the carbon brush connecting portion that is used for being connected with carbon brush of described metal terminal is in described groove, and the wire company headquarters that is used for being connected with wire of described metal terminal inserts the cavity of described support portion and stretches out described support portion by described location hole;
(3) filler is inserted in the described cavity that is fitted with described metal terminal;
(4) after described cavity is filled, form the housing that coats described main part by injection moulding in the outside of described main part.
9. the manufacture method of Split type carbon brush holder as claimed in claim 8 is characterized in that, in step (1), described main part and the support portion of described location skeleton are integrated.
10. the manufacture method of Split type carbon brush holder as claimed in claim 8 is characterized in that, in step (3), described filler injects in the described cavity by injection moulding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110202409.8A CN102891416B (en) | 2011-07-19 | 2011-07-19 | Split type carbon brush bracket and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110202409.8A CN102891416B (en) | 2011-07-19 | 2011-07-19 | Split type carbon brush bracket and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102891416A true CN102891416A (en) | 2013-01-23 |
| CN102891416B CN102891416B (en) | 2015-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110202409.8A Active CN102891416B (en) | 2011-07-19 | 2011-07-19 | Split type carbon brush bracket and manufacturing method thereof |
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| Country | Link |
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| CN (1) | CN102891416B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105098558A (en) * | 2015-09-06 | 2015-11-25 | 瑞安市瑞鑫电器有限公司 | Manufacturing method of carbon brush holder |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11113208A (en) * | 1997-09-30 | 1999-04-23 | Mitsubishi Electric Corp | Manufacture of insert conductor and brush holder |
| US20080160817A1 (en) * | 2006-12-12 | 2008-07-03 | Frank Fritsch | Brush holder with crimp connection |
| CN202153603U (en) * | 2011-07-19 | 2012-02-29 | 廊坊科森电器有限公司 | Split type carbon brush holder |
-
2011
- 2011-07-19 CN CN201110202409.8A patent/CN102891416B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11113208A (en) * | 1997-09-30 | 1999-04-23 | Mitsubishi Electric Corp | Manufacture of insert conductor and brush holder |
| US20080160817A1 (en) * | 2006-12-12 | 2008-07-03 | Frank Fritsch | Brush holder with crimp connection |
| CN202153603U (en) * | 2011-07-19 | 2012-02-29 | 廊坊科森电器有限公司 | Split type carbon brush holder |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105098558A (en) * | 2015-09-06 | 2015-11-25 | 瑞安市瑞鑫电器有限公司 | Manufacturing method of carbon brush holder |
| CN105098558B (en) * | 2015-09-06 | 2018-05-15 | 瑞安市瑞鑫电器有限公司 | Carbon brush holder manufacture method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102891416B (en) | 2015-04-08 |
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