CN102891416B - 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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- CN102891416B CN102891416B CN201110202409.8A CN201110202409A CN102891416B CN 102891416 B CN102891416 B CN 102891416B CN 201110202409 A CN201110202409 A CN 201110202409A CN 102891416 B CN102891416 B CN 102891416B
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- carbon brush
- support portion
- metal terminal
- split type
- cavity
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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 20
- 239000000945 filler Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 description 6
- 238000007493 shaping process Methods 0.000 description 6
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process 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
Landscapes
- Motor Or Generator Current Collectors (AREA)
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 technical field of motor manufacture, be specifically related to a kind of Split type carbon brush holder and the manufacture method thereof that are applied to automobile ABS system.
Background technology
Current, automobile ABS (Anti-lock braking system) system forward miniaturization, modularization, standardization future development.For the ABS motor of driving pump body action, require that its volume is little, dimensional accuracy is high, metal terminal good airproof performance.As shown in Figure 1 and Figure 2, the carbon brush holder 100 that the integral of prior art is shaping comprises discoid carbon brush holder main body 110 and is vertically connected on the columned supporter 120 of carbon brush holder main body 110 side, a part for negative metal terminal 101 and cathode metal terminal 102 is arranged in supporter 120 and stretches out supporter 120, for being connected with wire, negative metal terminal 101 and another part of cathode metal terminal 102 are positioned at carbon brush holder main body 110 for being connected with carbon brush.
The manufacture process of the carbon brush holder 100 of prior art directly negative metal terminal 101 and cathode metal terminal 102 is put into mould, carbon brush holder 100 is become by resin by injection integral molded plastic, but because the thermal expansion coefficient difference between negative, positive metal terminal 101 and 102 and the resin forming carbon brush holder 100 is very large, and the adhesion of common insulating resin and metal terminal is poor, therefore cause negative metal terminal 101 or there is gap between cathode metal terminal 102 and carbon brush holder 100, ABS system cannot be met for the bubble-tight strict demand of motor.In addition, in the integrated injection molding mode of prior art, negative metal terminal 101 or cathode metal terminal 102 are placed directly in injection mold, when injection moulding, anticathode metal terminal 101 or cathode metal terminal 102 impact by the flowing pressure that resin is powerful and temperature, 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 depanning cooling, carbon brush holder each position contraction distortion 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, provides the manufacture method of a kind of carbon brush holder and carbon brush holder, improves metal terminal shape and the positioning precision of carbon brush holder inside, and improves the air-tightness between metal terminal and resin.
For solving the problem, the invention provides a kind of Split type carbon brush holder, comprise multiple metal terminal and the location skeleton for fixing described metal terminal, described location skeleton comprises main part and is vertically connected on the support portion of described main part side, the opposite side of described main part is provided with groove, the inside of described support portion is the cavity of one end open, 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 for interting and fixing the location hole of described metal terminal; Each described metal terminal comprises the carbon brush connecting portion that is positioned at described groove respectively and is positioned at the cavity of described support portion and the wire interconnecting piece stretched out through described location hole; Described Split type carbon brush holder also comprises the filler that is filled in described cavity and is coated on the housing on 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, the wall of the cavity of described support portion is provided with for interting and fixing the location notch of the wire interconnecting piece of described metal terminal along the length direction 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 manufacture method that present invention also offers a kind of Split type carbon brush holder comprises the following steps successively:
(1) injection moulding forms location skeleton, described location skeleton comprises main part and is connected to the support portion of described main part side, the opposite side of described main part is provided with groove, the inside of described support portion is the cavity of one end open, 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 for interting and the location hole of fixing metal terminal;
(2) described metal terminal is inserted on location skeleton that described step (1) formed, described metal terminal for the carbon brush connecting portion that is connected with carbon brush in described groove, the inserting the cavity of described support portion for the wire company headquarters be connected with wire and stretch out described support portion by described location hole of described metal terminal;
(3) filler is inserted be fitted with in the described cavity of described metal terminal;
(4) after described cavity is filled, the housing of coated described main part is formed 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 is injected in described cavity by injection moulding.
Split type carbon brush holder of the present invention and manufacture method thereof, by first shaping location skeleton fixing metal terminal, improve the positioning precision of metal terminal in carbon brush holder, by filling cavity, improve the air-tightness between metal terminal and resin, be positioned at groove due to metal terminal and be fixed, when injection-moulded housing, the flowing of resin is unaffected, improves the dimensional accuracy of carbon brush holder.
Accompanying drawing explanation
Fig. 1 is the perspective view of the integral type carbon brush holder of prior art;
Fig. 2 for the integral type carbon brush holder shown in Fig. 1 along simultaneously through the diameter of carbon brush holder main body and the bus of supporter plane the generalized section of cutting;
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;
Fig. 5 is the right view of the Split type carbon brush holder shown in Fig. 3;
Fig. 6 for the Split type carbon brush holder shown in Fig. 5 along A-A to generalized section;
The perspective view of the location skeleton that Fig. 7 is the Split type carbon brush holder shown in Fig. 3;
Fig. 8 is the perspective view in another direction of the location skeleton shown in Fig. 7;
The support portion that Fig. 9 is the location skeleton shown in Fig. 8 is by the perspective view after along B-B to planar interception;
Figure 10 is the enlarged diagram in the M portion of the support portion of the location skeleton shown in Fig. 8;
Figure 11 is the schematic diagram after the location skeleton plug-in mounting metal terminal shown in Fig. 7;
The schematic diagram that the cavity that Figure 12 is the support portion of the location skeleton shown in Figure 11 has been filled;
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 that Fig. 3 is by the left view of shown Split type carbon brush holder; Fig. 5 is the right view of the Split type carbon brush holder shown in Fig. 3; Fig. 6 for the Split type carbon brush holder shown in Fig. 5 along A-A to generalized section.As shown in figures 3 to 6, the Split type carbon brush holder 200 of embodiments of the invention comprises the first metal end 201, second metal terminal 202 and the location skeleton for fixing the first metal end 201 and the second metal terminal 202.In the present embodiment, be only described for the Split type carbon brush holder comprising two metal terminals, those skilled in the art under technology instruction of the present utility model, can make the Split type carbon brush holder comprising more than three or three metal terminals.
As shown in Figure 7, 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 side.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 second groove 246 with the first groove 245 simultaneously.As shown in Fig. 8, Figure 10, the other end (i.e. free end) of support portion 220 is provided with for interting and fixing the first location hole 211 and the second location hole 212 of the first metal end 201 and the second metal terminal 202.As shown in figures 13 and 14, the first metal end 201 is divided into the carbon brush connecting portion 2011 for being connected with carbon brush and the wire interconnecting piece 2012 for being connected with wire to the shape of the first metal end 201 and the second metal terminal 202; Second metal terminal 202 is also divided into the carbon brush connecting portion 2021 for being connected with carbon brush and the wire interconnecting piece 2022 for 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 main part 241, for being connected with 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 for being connected with wire (not shown) by the first location hole 211.Second metal terminal 202 adopts the mode similar to the first metal end 201 to be fixed on and locates on skeleton 240.
Preferably, as shown in Figure 9, the inwall of support portion 220 offers the first location notch 221 and the second location notch 222 for fixing the first metal end 201 and the second metal terminal 202 further.Namely cavity 228 comprises two parallel the first location notch 221 and the second location notchs 222, as shown in Figure 9, on the cross section of support portion 220, cavity 228 is substantially in " work " font, 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 end and stretch out from the first location hole 211 and the second location hole 212 respectively.The stability of metal terminal on the skeleton of location can be improved further by arranging two location notchs, avoid in next step injection step, the impact of the resin that metal terminal is flowed and moving, improve shaping after the quality of carbon brush holder.Certainly, the first location notch 221 can also become splayed to arrange with the second location notch 222, and just adopt the arrangement mode that the location notch of two shown in Fig. 9 is parallel to each other, 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 filler 251 be filled in the cavity 228 of support portion 220 and the housing 210 be coated on by injection moulding on main part 241.The inner side of housing 210 covers on 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.The carbon brush connecting portion 2021 of the carbon brush connecting portion 2011 being certainly positioned at the first metal end 201 of the first groove 245 and the second metal terminal 202 being positioned at the second groove 246 is also by housing 210 portion envelops.Wherein, the filler 251 being 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 resisted shrinkage stress, can and strong bonded between metal terminal and support portion.
The manufacture process of Split type carbon brush holder of the present invention is described in detail below in conjunction with Fig. 2-Figure 14.
The manufacture method of the Split type carbon brush holder of the present embodiment, comprises the following steps successively:
(1) injection moulding forms location skeleton, first uses particular manufacturing craft to form location skeleton 240 as shown in Figure 7 and Figure 8 by injection moulding.As shown in Figure 7 and Figure 8, location skeleton 240 comprises main part 241 and is vertically connected on the support portion 220 of main part 241 side, 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 the cavity 228 of its inside is that openend 229 openend 229 is connected with main part 241 and cavity 228 is communicated with the second groove 246 with the first groove 245 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 201 and the second metal terminal 202 are inserted into respectively on the skeleton 240 of location, wherein, one end of the first metal end 201 is positioned at the first groove 245 on main part 241, for being connected with carbon brush (not shown); The other end is positioned at support portion 220 and stretches out support portion 220 for being connected with wire (not shown) by the first location hole 211.Second metal terminal 202 adopts the mode similar to the first metal end 201 to be fixed on and locates in skeleton 240.Make the first metal end 201 and the second metal terminal 202 be fixed in the skeleton 240 of location in this way, the impact that the resin in postorder injection step impacts would not be subject to, thus ensure that the form and dimensional precision of metal terminal.
(3) insert in cavity by filler, filler 251 is inserted in the cavity 228 of support portion 220 by injection moulding, and wherein filler 251 can select suitable megohmite insulant, as insulating resin etc.In the present embodiment, preferentially select " SEAL-FIT " material, this material and metal terminal and common casting resin all have the characteristic of good adhesion and resisted shrinkage stress, can guarantee the air-tightness requirement between metal terminal and 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 201 and the second metal terminal 202 is just fixed in support portion 220.Formed the housing 210 of coated main part 241 in the outside of main part 241 being fitted with the first metal end 201 and the second metal terminal 202 by injection moulding, form Split type carbon brush holder 200 as shown in Figure 3-Figure 5.In this operation, owing to being form by injection moulding the shell 210 be coated on main part 241 again on the basis of the main part 241 of shaping location skeleton 240, and the first metal end 201 and the second metal terminal 202 are all positioned at groove, flowing forming space uniform for the formation of the resin of shell 210 is stablized, the resin density of the shell 210 after therefore shaping is even, can improve shell 210 at the cooled form and dimensional precision of depanning.Further, the first metal end 201 and the second metal terminal 202 are all positioned at groove, are not vulnerable to the impact of resin of flowing, its position stability, be conducive to improving carbon brush holder shaping after quality.In the present embodiment, the location main part 241 of skeleton 240 and support portion 220 are integrated, namely by single injection-molded, location skeleton 240 can adopt common resin material.
Certainly, the above is the preferred embodiment of the present invention, should be understood that; for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (10)
1. a Split type carbon brush holder, it is characterized in that, comprise multiple metal terminal and the location skeleton for fixing described metal terminal, described location skeleton comprises main part and is vertically connected on the support portion of described main part side, the opposite side of described main part is provided with groove, the inside of described support portion is the cavity of one end open, 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 for interting and fixing the location hole of described metal terminal;
Each described metal terminal comprises the carbon brush connecting portion that is positioned at described groove respectively and is positioned at the cavity of described support portion and the wire interconnecting piece stretched out through described location hole;
Described Split type carbon brush holder also comprises the filler that is filled in described cavity and is coated on the housing on described main part by injection moulding.
2. Split type carbon brush holder as claimed in claim 1, it is characterized in that, described filler is insulating resin.
3. Split type carbon brush holder as claimed in claim 1, it 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, the wall of the cavity of described support portion is provided with for interting and fixing the location notch of the wire interconnecting piece of described metal terminal along the length direction of described support portion.
5. Split type carbon brush holder as claimed in claim 4, it is characterized in that, described location notch is two.
6. Split type carbon brush holder as claimed in claim 5, it 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. a manufacture method for Split type carbon brush holder, is characterized in that, comprises the following steps successively:
(1) injection moulding forms location skeleton, described location skeleton comprises main part and is connected to the support portion of described main part side, the opposite side of described main part is provided with groove, the inside of described support portion is the cavity of one end open, 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 for interting and the location hole of fixing metal terminal;
(2) described metal terminal is inserted on location skeleton that described step (1) formed, described metal terminal for the carbon brush connecting portion that is connected with carbon brush in described groove, the inserting the cavity of described support portion for the wire company headquarters be connected with wire and stretch out described support portion by described location hole of described metal terminal;
(3) filler is inserted be fitted with in the described cavity of described metal terminal;
(4) after described cavity is filled, the housing of coated described main part is formed 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, it 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, it is characterized in that, in step (3), described filler is injected in 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 CN102891416A (en) | 2013-01-23 |
| CN102891416B true CN102891416B (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110202409.8A Active CN102891416B (en) | 2011-07-19 | 2011-07-19 | Split type carbon brush bracket and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105098558B (en) * | 2015-09-06 | 2018-05-15 | 瑞安市瑞鑫电器有限公司 | Carbon brush holder manufacture method |
| CN118554233B (en) * | 2024-07-26 | 2024-11-19 | 镇江泛沃新能汽车技术股份有限公司 | Automatic machining device and method for motor carbon brush holder based on elastic self-locking mechanism |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202153603U (en) * | 2011-07-19 | 2012-02-29 | 廊坊科森电器有限公司 | Split type carbon brush holder |
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| JP3347033B2 (en) * | 1997-09-30 | 2002-11-20 | 三菱電機株式会社 | Method for manufacturing insert conductor and brush holder |
| DE102006000516A1 (en) * | 2006-12-12 | 2008-06-19 | Hilti Ag | Brush holder with brush lead connection system, used in electrical machine, includes plug connector and lead crimping system with defined spacing between them |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202153603U (en) * | 2011-07-19 | 2012-02-29 | 廊坊科森电器有限公司 | Split type carbon brush holder |
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| CN102891416A (en) | 2013-01-23 |
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