CN205104734U - Multislot commutator - Google Patents
Multislot commutator Download PDFInfo
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- CN205104734U CN205104734U CN201520925426.8U CN201520925426U CN205104734U CN 205104734 U CN205104734 U CN 205104734U CN 201520925426 U CN201520925426 U CN 201520925426U CN 205104734 U CN205104734 U CN 205104734U
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- commutator
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- commutator segment
- grooved
- molded part
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Abstract
The utility model provides a multislot commutator belongs to connecting device technical field. It is big with the area of contact of axle installation that it has solved current commutator, the problem that the magnitude of interference is little of axle. This multislot commutator includes: switching -over piece, a plurality of switching -over piece are gathered together and are the circle form, the formed part, the formed part part contains the inboard of connecting the switching -over piece, has seted up the connecting hole on the axis of formed part, the inner peripheral surface coparallel of connecting hole has a plurality of to dodge the groove in the axis shaping. This multislot commutator has simple to operate, firm in connection's advantage.
Description
Technical field
The utility model belongs to jockey technical field, relates to a kind of commutator, particularly a kind of multiple-grooved commutator.
Background technology
Commutator is that DC permanent magnet series-wound motor to go down former parts in order to motor can be allowed to continue rotation.In structure, it is round that commutator is that several contact chip surrounds, and connect epitrochanterian each tap respectively, outside connects two electrodes and is called that brush contacts with it, simultaneously only contact wherein two.Principle is, when coil is by after electric current, can under the effect of permanent magnet, by attracting and repulsive force rotation, when it forward to balance with magnet time, originally the contact led on the line more corresponding commutator of electricity is just separated with brush, and brush is connected to and meets that produce motive force and organize on contact corresponding to coil.
Patent CN203398487U discloses a kind of commutator, comprise commutator body and some commutator segments, described each commutator segment includes and embeds commutator intrinsic fixing feet, expose this external conducting strip of commutator and be placed in the crotch of top conductive flake, described fixing feet and conducting strip are all arranged in strip structure, and fixing feet is along the cross section indentation vibrational power flow of the radial direction of commutator body.
The inside installing hole of above-mentioned commutator is straight hole shape, and the contact area of installing with axle is large, and the magnitude of interference of axle is little.
Summary of the invention
The purpose of this utility model there are the problems referred to above for existing technology, proposes a kind of easy for installation, multiple-grooved commutator of being connected firmly.
The purpose of this utility model realizes by following technical proposal: a kind of multiple-grooved commutator, is characterized in that, comprising:
Commutator segment, several commutator segments are gathered in circle shape;
Molded part, described molded part partial tolerance connects the inner side of commutator segment, and the axis of molded part offers connecting hole, and the inner peripheral surface of described connecting hole parallels to the axis forms some escape groove.
In above-mentioned a kind of multiple-grooved commutator, form installation portion described in two between escape groove, the width of described installation portion is less than the width of escape groove.
In above-mentioned a kind of multiple-grooved commutator, be inclusive with spring bushing in described molded part, the internal diameter of described spring bushing is greater than the maximum gauge of installation portion.
In above-mentioned a kind of multiple-grooved commutator, at the two ends of commutator segment, retainer ring is installed, described retainer ring by commutator segment around in sheet circle.
In above-mentioned a kind of multiple-grooved commutator, described commutator segment comprises matrix, be connected portion be connected matrix and the connecting portion in the portion that is connected, described commutator segment is in " work " font, and the length of described matrix is greater than the length in the portion of being connected, described in the be connected length in portion be greater than the length of connecting portion.
In above-mentioned a kind of multiple-grooved commutator, described commutator segment offers trapezoidal groove, and described texturearunaperpendicular runs through connecting portion and the portion that is connected, and the notch of groove is opened in the portion of being connected, and the width of notch is less than the width of bottom land.
In above-mentioned a kind of multiple-grooved commutator, the cross section of described commutator segment is in " work " font, and the width of described matrix is greater than the width in the portion of being connected, described in the be connected width in portion be greater than the width of connecting portion.
In above-mentioned a kind of multiple-grooved commutator, protrude bending in one end of matrix and form hook part.
Compared with prior art, the utility model has following advantage:
1, commutator segment containing links into an integrated entity by molded part, forms integrated formed structure, easy to process.
2, connecting hole is offered at the axle center place of molded part, escape groove is offered in connecting hole, when commutator is mounted to the BMC axle of motor, the localized contact of installation portion between escape groove is become from the comprehensive engagement of original unthreaded hole, decrease contact area, significantly reduce the damage of the insulating powder layer of BMC axle, improve motor performance.
3, endoporus and axle contact area reduce, and increase the matching allowance of motor BMC axle and endoporus, increase the adaptive capacity of BMC axle, decrease the waste of axle, have saved the cost of motor.
4, the cross section of commutator segment and profile are all in " work " font, and after one-body molded with molded part, the shaping position of commutator segment is accurate, Stability Analysis of Structures.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is sectional structure schematic diagram of the present utility model.
Fig. 3 is the structural representation of commutator segment in the utility model.
In figure, 1, commutator segment; 11, matrix; 12, connecting portion; 13, be connected portion; 14, groove; 15, hook part; 2, molded part; 21, connecting hole; 22, escape groove; 23, installation portion; 24, interval trough; 3, spring bushing; 4, retainer ring.
Embodiment
Be below specific embodiment of the utility model and 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 embodiments.
As depicted in figs. 1 and 2, this multiple-grooved commutator, comprising: commutator segment 1 and molded part 2, and several commutator segments 1 are gathered in circle shape, and commutator segment 1 is spaced the closed ring of stroke one by ring shape, and the excircle of commutator segment 1 is formed cylindrical, adding man-hour, distance piece is distributed between two adjacent commutator segments 1, spaced apart by distance piece between two commutator segments 1, molded part 2 contains and connects commutator segment 1, interval trough 24 is formed at the shaping rear removal distance piece of molded part 2, as preferably, distance piece adopts mica sheet, namely the inner side of commutator segment 1 all connects in aggregates by molded part 2, distance piece forms interval trough 24 by between commutator segment 1, the outer peripheral face of commutator segment 1 protrudes molded part 2, because distance piece does not protrude in the inner side of molded part 2, therefore to be insulated parcel by molded part 2 at the root of commutator segment 1, the axis of molded part 2 offers connecting hole 21, the inner peripheral surface of connecting hole 21 forms some escape groove 22 along axis, installation portion 23 is formed between two escape groove 22, the width of installation portion 23 is less than the width of escape groove 22.Escape groove 22 is set in connecting hole 21, when commutator is mounted to the BMC axle of motor, is become the localized contact of installation portion 23 between escape groove 22 from the comprehensive engagement of original unthreaded hole, decrease contact area, significantly reduce the damage of the insulating powder layer of BMC axle, improve motor performance.Connecting hole 21 and BMC axle contact area reduce, and increase the matching allowance of motor BMC axle and connecting hole 21, increase the magnitude of interference of BMC axle, decrease the waste of axle, saved the cost of motor.During processing connecting hole 21, the shaft-like mandrel of shaping connecting hole 21 processes keyway, have many escape groove 22 after the connecting hole 21 of commutator is shaping, easy to process, forming degree is good.
Commutator segment 1 comprises matrix 11, be connected portion 13 be connected matrix 11 and the connecting portion 12 in the portion 13 that is connected, commutator segment 1 is in " work " font, and the length of matrix 11 is greater than the length in the portion of being connected 13, and the length in the portion 13 that is connected is greater than the length of connecting portion 12.
In molded part 2, be inclusive with spring bushing 3, the internal diameter of spring bushing 3 is greater than the maximum gauge of installation portion 23.Spring bushing 3 is included in the inner side of molded part 2 completely, be enhanced to the internal intensity of shaped piece 2 and the stability of size, the internal diameter of spring bushing 3 is greater than the maximum gauge of installation portion 23, escape groove 22 and installation portion 23 are all in the inner side of spring bushing 3, during installation, installation portion 23 is against motor BMC axle, and spring bushing 3 can give the support of installation portion 23 brute force, ensures that molded part 2 bonding strength is reliable.
At the two ends of commutator segment 1, retainer ring 4 is installed, retainer ring 4 by commutator segment 1 around in sheet circle.Molded part 2 contains the connecting portion 12 of commutator segment 1 and be connected portion 13 and part of matrix 11 when processing and forming, commutator segment 1 is arranged to " work " font when molded part 2 can be made to contain, the sheathed retainer ring 4 at the two ends of commutator segment 1, the sheet circle position stability that commutator segment 1 can be made to be formed, structure is ingenious, increase to the contact area of shaped piece 2 and commutator segment 1, stablize position and the dimensional accuracy of commutator segment 1, structure is ingenious.
Commutator segment 1 offers trapezoidal groove 14, and groove 14 vertically runs through connecting portion 12 and the portion 13 that is connected, and the notch of groove 14 is opened in the portion of being connected 13, and the width of notch is less than the width of bottom land.Commutator segment 1 is offered groove 14, can when molded part 2 contain commutator segment 1, connect commutator segment 1 in a connecting overall, pardon is strong.
As shown in Figures 2 and 3, the cross section of commutator segment 1 is in " work " font, and the width of matrix 11 is greater than the width in the portion of being connected 13, and the width in the portion 13 that is connected is greater than the width of connecting portion 12.The cross section of commutator segment 1 is I shape, and matrix 11 is wedge shape with the line in the portion 13 that is connected, and makes commutator segment 1 gather in ring shape, and the portion 13 that is connected can not mutually against getting close to, and be conducive to keeping spacing, increase contact area, it is firm to connect simultaneously.
Protrude bending in one end of matrix 11 and form hook part 15.After molded part 2 contains commutator segment 1, one end of matrix 11 is bent to form hook part 15.
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 amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Claims (8)
1. a multiple-grooved commutator, is characterized in that, comprising:
Commutator segment, several commutator segments are gathered in circle shape;
Molded part, described molded part partial tolerance is connected to the inner side of commutator segment, and the axis of molded part offers connecting hole, and the inner peripheral surface of described connecting hole parallels to the axis forms some escape groove.
2. a kind of multiple-grooved commutator according to claim 1, is characterized in that, form installation portion described in two between escape groove, and the width of described installation portion is less than the width of escape groove.
3. a kind of multiple-grooved commutator according to claim 2, is characterized in that, be inclusive with spring bushing in described molded part, and the internal diameter of described spring bushing is greater than the maximum gauge of installation portion.
4. a kind of multiple-grooved commutator according to claim 1,2 or 3, is characterized in that, be provided with retainer ring at the two ends of commutator segment, described retainer ring by commutator segment around in sheet circle.
5. a kind of multiple-grooved commutator according to claim 1,2 or 3, it is characterized in that, described commutator segment comprises matrix, be connected portion be connected matrix and the connecting portion in the portion that is connected, described commutator segment is in " work " font, the length of described matrix is greater than the length in the portion of being connected, described in the be connected length in portion be greater than the length of connecting portion.
6. a kind of multiple-grooved commutator according to claim 5, it is characterized in that, described commutator segment offers trapezoidal groove, and described texturearunaperpendicular runs through connecting portion and the portion that is connected, and the notch of groove is opened in the portion of being connected, and the width of notch is less than the width of bottom land.
7. a kind of multiple-grooved commutator according to claim 5, is characterized in that, the cross section of described commutator segment is in " work " font, and the width of described matrix is greater than the width in the portion of being connected, described in the be connected width in portion be greater than the width of connecting portion.
8. a kind of multiple-grooved commutator according to claim 5, is characterized in that, protrudes bending form hook part in one end of matrix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520925426.8U CN205104734U (en) | 2015-11-19 | 2015-11-19 | Multislot commutator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520925426.8U CN205104734U (en) | 2015-11-19 | 2015-11-19 | Multislot commutator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205104734U true CN205104734U (en) | 2016-03-23 |
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ID=55520491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520925426.8U Active CN205104734U (en) | 2015-11-19 | 2015-11-19 | Multislot commutator |
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| Country | Link |
|---|---|
| CN (1) | CN205104734U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105375224A (en) * | 2015-11-19 | 2016-03-02 | 华瑞电器股份有限公司 | Multi-groove commutator |
| CN107681397A (en) * | 2017-09-30 | 2018-02-09 | 日本电产凯宇汽车电器（江苏）有限公司 | Commutator |
-
2015
- 2015-11-19 CN CN201520925426.8U patent/CN205104734U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105375224A (en) * | 2015-11-19 | 2016-03-02 | 华瑞电器股份有限公司 | Multi-groove commutator |
| CN107681397A (en) * | 2017-09-30 | 2018-02-09 | 日本电产凯宇汽车电器（江苏）有限公司 | Commutator |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |