CN203503946U - Commutator - Google Patents
Commutator Download PDFInfo
- Publication number
- CN203503946U CN203503946U CN201320662287.5U CN201320662287U CN203503946U CN 203503946 U CN203503946 U CN 203503946U CN 201320662287 U CN201320662287 U CN 201320662287U CN 203503946 U CN203503946 U CN 203503946U
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- commutator
- moulding compound
- mentioned
- commutator segment
- bulge loop
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Abstract
The utility model provides a commutator, which belongs to the technical field of motor element. The commutator solves the problems that the commutator segment connecting structure of the existing commutator is unstable, and the commutator segments are in poor contact with the motor coil. The commutator provided by the utility model comprises commutator segments and a bush, wherein a moulding compound used for connecting the commutator segments and the bush is arranged between the commutator segments and the bush, a moulding compound body is provided with an inner hole, the wall of the inner hole is fixedly provided with a convex ring 1 and a convex ring 2 in the axial direction at an interval, the convex ring 1 and the convex ring 2 are integrally molded with the moulding compound body, the outer peripheral wall of the bush is provided with an annular groove 1 and an annular groove 2 which are respectively in one-to-one correspondence with the convex ring 1 and the convex ring 2, the bush is arranged in the inner hole, and the convex ring 1 and the convex ring 2 are correspondingly clamped in the annular groove 1 and the annular groove 2. The commutator is simple in structure, makes the connection between the commutator segments and the moulding compound body stable, is provided with the bush in the moulding compound body, and makes the connection between the moulding compound body and a main shaft of a motor stable.
Description
Technical field
The utility model belongs to motor component technical field, relates to a kind of commutator.
Background technology
Commutator is in order to allow motor continue parts that rotate on DC permanent magnet series-wound motor.
The kind of commutator comprises: mechanical commutator, partly mould commutator and all-plastic commutator; The commutator adopting on existing automobile starter is generally to select mechanical arch commutator and plastic commutator.The principle of this commutator is, when motor winding is by after electric current, the rotor of motor can be under the effect of permanent magnet, by attraction and repulsive force, rotate, when it forwards to magnet balance, the contact originally leading on the corresponding commutator of coil of electricity is just separated with brush, and brush is connected to and meets that produce motive force and organize on the contact that coil is corresponding, so ceaselessly repeat down, DC motor has just been turned over.If there is no the effect of commutator, it is just stuck less than half-turn that motor can only turn, and can only be used as electric brake.The centrifugal force producing while utilizing motor rotation, as power, is controlled the size of starting resistance, reaches and reduces electric motor starting electric current, increase starting torque, makes Wound-rotor asynchronous electric thought realize the device of brushless automatic control operation.
The structure of existing commutator is generally comprised of several commutator segments, and these several commutator segments surround round, connects respectively epitrochanterian each contact, and two electrodes that outside connects are called brush and contact with it, only contacts wherein two simultaneously.As China Patent No. is: a kind of cylindrical type carbon commutator as described in " 200620108374.6 ", this commutator is mainly comprised of commutator segment and moulding compound, the body of this commutator segment parallels with the rotation of this commutator, on the outer surface of the body of described commutator segment, carbon plate is housed; This carbon plate is contained in the outer surface of the body of commutator segment by welding coating.This patent is mainly that commutator segment outer surface is improved, and when motor runs up, carbon brush directly contacts with carbon plate, to commutator segment body, can not cause wearing and tearing.But commutator segment is not also very stable with being connected of moulding compound in above-mentioned structure, under motor rotation at a high speed, motor reel a little a little bias will cause moulding compound and commutator segment slightly separately, cause commutator segment and motor winding loose contact, useful life is shorter, also has the direct connection that is connected to of moulding compound and motor main shaft, under the high speed rotating of motor main shaft, this moulding compound easily weares and teares, and the bias that can cause equally commutator to rotate, makes commutator segment and motor winding loose contact.
Summary of the invention
The purpose of this utility model is to have the problems referred to above for existing technology, proposed a kind of moulding compound with motor main shaft for to be indirectly connected, this syndeton is comparatively stable, can not be the commutator of moulding compound wearing and tearing.
The purpose of this utility model can realize by following technical proposal: a kind of commutator, this commutator comprises commutator segment and lining, between commutator segment and lining, be provided with the moulding compound that commutator segment and lining are linked together, it is characterized in that, in described moulding compound body, there is an endoporus, on inner hole wall, axially spaced-apart is installed with two and the integrated bulge loop one of moulding compound body and bulge loop two, the periphery wall of described lining offers and above-mentioned bulge loop one, bulge loop two difference are cannelure one and the cannelure two of corresponding matching one by one, described lining is arranged in above-mentioned endoporus and this bulge loop one, bulge loop two correspondences are connected to above-mentioned bulge loop one, on bulge loop two.
This commutator is to be mainly installed with lining on the inwall of moulding compound body, when commutator fixed cover is located on motor main shaft, this lining is between motor main shaft and moulding compound, when motor High Rotation Speed, lining can prevent from wearing and tearing between moulding compound and main shaft as the medium of moulding compound, avoid commutator rotation unstable, cause and coil loose contact.
In above-mentioned a kind of commutator, it is one round table-like that described moulding compound body is, above-mentioned endoporus is positioned at the middle part of described moulding compound body and above-mentioned moulding compound body upper bottom surface and bottom surface are run through respectively in the two ends of this endoporus, at the bottom surface of moulding compound body along the axial direction of endoporus to being outside equipped with and the integrated ring part of above-mentioned moulding compound body, above-mentioned lining one end extends to the bottom of ring part, described commutator segment is platy structure ringwise, this commutator segment is set on above-mentioned ring part and the center bore inner wall of this commutator segment is resisted against on the outer wall of above-mentioned ring part.Moulding compound body and commutator segment are connected to tight interference fit, and the object arranging is like this stable connection increasing between the two.
In above-mentioned a kind of commutator, the bottom surface of described moulding compound body offers the curved cannelure of cross section, the upper surface of described commutator segment has the arc matching with above-mentioned cannelure and turns edge, and described commutator segment is arranged on the bottom surface of moulding compound body and this arc turns edge is connected to above-mentioned cannelure.
In above-mentioned a kind of commutator, it is horn-like that the cross section that described arc turns edge is from the bottom to top.
In above-mentioned a kind of commutator, annular serrate slot is also set on the bottom surface of described moulding compound body, on the upper surface of described commutator segment, be also provided with from inside to outside the oblique gear ring tilting, described commutator segment is arranged on the bottom surface of moulding compound body and this oblique gear ring is connected to above-mentioned annular serrate slot.
Compared with prior art, the utility model arranges bulge loop one, bulge loop two on moulding compound body, cannelure one and cannelure two are set on lining, when being connected with lining, moulding compound make bulge loop one and cannelure one match, bulge loop two and cannelure two match, prevent lining axial endplay on moulding compound, make the main shaft stable connection of commutator and motor; Annular serrate slot is also set on the bottom surface of moulding compound body, on the upper surface of commutator segment, be also provided with the oblique gear ring tilting from inside to outside, commutator segment is arranged on the bottom surface of moulding compound body and this oblique gear ring is connected to above-mentioned annular serrate slot, by further strengthening commutator segment in the connection of moulding compound body with being connected of annular serrate slot and oblique gear ring; The utility model is simple in structure, makes commutator segment and moulding compound body stable connection, in moulding compound body, is provided with lining, makes moulding compound body be connected to stable connection on motor main shaft.
Accompanying drawing explanation
Fig. 1 is the plan structure schematic diagram of this commutator.
Fig. 2 is the half section structural representation of this commutator.
In figure, 1, commutator segment; 2, lining; 2a, cannelure one; 2b, cannelure two; 3, moulding compound; 3a, bulge loop one; 3b, bulge loop two; 4, endoporus; 5, ring part; 6, cannelure; 7, arc turns edge; 8, annular serrate slot; 9, oblique gear ring.
Embodiment
Be below specific embodiment of the utility model by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.
As shown in Figure 1 or 2, this commutator is mainly comprised of commutator segment 1 and lining 2, between commutator segment 1 and lining 2, be provided with the moulding compound 3 that commutator segment 1 and lining 2 are linked together, in moulding compound 3 bodies, there is an endoporus 4, on endoporus 4 walls, axially spaced-apart is installed with two and moulding compound integrated bulge loop one 3a of 3 body and bulge loop two 3b, the periphery wall of described lining 2 offers and above-mentioned bulge loop one 3a, bulge loop two 3b difference are cannelure one 2a and cannelure two 2b of corresponding matching one by one, described lining 2 is arranged in above-mentioned endoporus 4 and this bulge loop one 3a, bulge loop two 3b correspondences are connected to above-mentioned bulge loop one 3a, on bulge loop two 3b.
When Practical manufacturing, it is one round table-like that these moulding compound 3 bodies are, endoporus 4 is positioned at the middle part of described moulding compound 3 bodies and moulding compound 3 body upper bottom surface and bottom surfaces are run through respectively at the two ends of this endoporus 4, at the bottom surface of moulding compound 3 bodies along the axial direction of endoporus 4 to being outside equipped with and the integrated ring part 5 of moulding compound 3 body, lining 2 one end extend to the bottom of ring part 5, commutator segment 1 is platy structure ringwise, and this commutator segment 1 is set on above-mentioned ring part 5 and the center bore inner wall of this commutator segment 1 is resisted against on the outer wall of above-mentioned ring part 5; The bottom surface of moulding compound 3 bodies offers the curved cannelure of cross section 6, the upper surface of described commutator segment 1 has the arc matching with above-mentioned cannelure 6 and turns edge 7, and described commutator segment 1 is arranged on the bottom surface of moulding compound 3 bodies and this arc turns edge 7 is connected to above-mentioned cannelure 6.In practice, turn edge 7 cross section of this arc is horn-like from the bottom to top.In order to strengthen commutator segment 1 in the connection of moulding compound 3 bodies, annular serrate slot 8 is also set on the bottom surface of moulding compound 3 bodies, on the upper surface of commutator segment 1, be also provided with from inside to outside the oblique gear ring 9 tilting, commutator segment 1 is arranged on the bottom surface of moulding compound 3 bodies and this oblique gear ring 9 is connected to annular serrate slot 8.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (5)
1. a commutator, this commutator comprises commutator segment (1) and lining (2), between commutator segment (1) and lining (2), be provided with the moulding compound (3) that commutator segment (1) and lining (2) are linked together, it is characterized in that, in described moulding compound (3) body, there is an endoporus (4), on endoporus (4) wall, axially spaced-apart is installed with two and moulding compound (3) the integrated bulge loop one of body (3a) and bulge loop two (3b), the periphery wall of described lining (2) offers and above-mentioned bulge loop one (3a), bulge loop two (3b) difference is cannelure one (2a) and the cannelure two (2b) of corresponding matching one by one, described lining (2) is arranged in above-mentioned endoporus (4) and this bulge loop one (3a), bulge loop two (3b) correspondence is connected to above-mentioned bulge loop one (3a), on bulge loop two (3b).
2. a kind of commutator according to claim 1, it is characterized in that, it is one round table-like that described moulding compound (3) body is, above-mentioned endoporus (4) is positioned at the middle part of described moulding compound (3) body and above-mentioned moulding compound (3) body upper bottom surface and bottom surface are run through respectively in the two ends of this endoporus (4), at the bottom surface of moulding compound (3) body along the axial direction of endoporus (4) to being outside equipped with and the integrated ring part of above-mentioned moulding compound (3) body (5), above-mentioned lining (2) one end extends to the bottom of ring part (5), described commutator segment (1) is platy structure ringwise, this commutator segment (1) is set in above-mentioned ring part (5) center bore inner wall upper and this commutator segment (1) and is resisted against on the outer wall of above-mentioned ring part (5).
3. a kind of commutator according to claim 2, it is characterized in that, the bottom surface of described moulding compound (3) body offers the curved cannelure of cross section (6), the upper surface of described commutator segment (1) has the arc matching with above-mentioned cannelure (6) and turns edge (7), and described commutator segment (1) is arranged on the bottom surface of moulding compound (3) body and this arc turns edge, and (7) are connected to above-mentioned cannelure (6).
4. a kind of commutator according to claim 3, is characterized in that, the turn edge cross section of (7) of described arc is horn-like from the bottom to top.
5. a kind of commutator according to claim 4, it is characterized in that, on the bottom surface of described moulding compound (3) body, annular serrate slot (8) is also set, on the upper surface of described commutator segment (1), be also provided with from inside to outside the oblique gear ring (9) tilting, described commutator segment (1) is arranged on the bottom surface of moulding compound (3) body and this oblique gear ring (9) is connected to above-mentioned annular serrate slot (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320662287.5U CN203503946U (en) | 2013-10-25 | 2013-10-25 | Commutator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320662287.5U CN203503946U (en) | 2013-10-25 | 2013-10-25 | Commutator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203503946U true CN203503946U (en) | 2014-03-26 |
Family
ID=50334892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320662287.5U Expired - Fee Related CN203503946U (en) | 2013-10-25 | 2013-10-25 | Commutator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203503946U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105337131A (en) * | 2014-08-14 | 2016-02-17 | 海安联科汽车零部件有限公司 | Cone head guide-type commutator |
-
2013
- 2013-10-25 CN CN201320662287.5U patent/CN203503946U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105337131A (en) * | 2014-08-14 | 2016-02-17 | 海安联科汽车零部件有限公司 | Cone head guide-type commutator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20161025 |